Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the

non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.

gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.

The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.

contrib/gcc/BUGS

@@ -0,0 +1,23 @@
+If you think you may have found a bug in GNU CC, please
+read the Bugs section of the Emacs manual for advice on
+
+(1) how to tell when to report a bug, 
+(2) where to send your bug report, and
+(2) how to write a useful bug report and what information
+it needs to have.
+
+There are three ways to read the Bugs section.
+
+(1) In a printed copy of the GCC manual.  You can order one from the
+Free Software Foundation; see the file ORDERS.  But if you don't have
+a copy on hand and you think you have found a bug, you shouldn't wait
+to get a printed manual; you should read the section right away as
+described below.
+
+(2) With Info.  Start Emacs, do C-h i to enter Info,
+then m gcc RET to get to the GCC manual, then m Bugs RET
+to get to the section on bugs.  Or use standalone Info in
+a like manner.  (Standalone Info is part of the Texinfo distribution.)
+
+(3) By hand. Search for the chapter "Reporting Bugs" in gcc.texi, or
+    cat /usr/local/info/gcc* | more "+/^File: emacs,  Node: Bugs,"

contrib/gcc/COPYING

@@ -0,0 +1,339 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	Appendix: How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.

contrib/gcc/COPYING.LIB

@@ -0,0 +1,482 @@
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL.  It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Library General Public License, applies to some
+specially designated Free Software Foundation software, and to any
+other libraries whose authors decide to use it.  You can use it for
+your libraries, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if
+you distribute copies of the library, or if you modify it.
+
+  For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you.  You must make sure that they, too, receive or can get the source
+code.  If you link a program with the library, you must provide
+complete object files to the recipients so that they can relink them
+with the library, after making changes to the library and recompiling
+it.  And you must show them these terms so they know their rights.
+
+  Our method of protecting your rights has two steps: (1) copyright
+the library, and (2) offer you this license which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  Also, for each distributor's protection, we want to make certain
+that everyone understands that there is no warranty for this free
+library.  If the library is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original
+version, so that any problems introduced by others will not reflect on
+the original authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that companies distributing free
+software will individually obtain patent licenses, thus in effect
+transforming the program into proprietary software.  To prevent this,
+we have made it clear that any patent must be licensed for everyone's
+free use or not licensed at all.
+
+  Most GNU software, including some libraries, is covered by the ordinary
+GNU General Public License, which was designed for utility programs.  This
+license, the GNU Library General Public License, applies to certain
+designated libraries.  This license is quite different from the ordinary
+one; be sure to read it in full, and don't assume that anything in it is
+the same as in the ordinary license.
+
+  The reason we have a separate public license for some libraries is that
+they blur the distinction we usually make between modifying or adding to a
+program and simply using it.  Linking a program with a library, without
+changing the library, is in some sense simply using the library, and is
+analogous to running a utility program or application program.  However, in
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+
+  Because of this blurred distinction, using the ordinary General
+Public License for libraries did not effectively promote software
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+concluded that weaker conditions might promote sharing better.
+
+  However, unrestricted linking of non-free programs would deprive the
+users of those programs of all benefit from the free status of the
+libraries themselves.  This Library General Public License is intended to
+permit developers of non-free programs to use free libraries, while
+preserving your freedom as a user of such programs to change the free
+libraries that are incorporated in them.  (We have not seen how to achieve
+this as regards changes in header files, but we have achieved it as regards
+changes in the actual functions of the Library.)  The hope is that this
+will lead to faster development of free libraries.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.  Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library".  The
+former contains code derived from the library, while the latter only
+works together with the library.
+
+  Note that it is possible for a library to be covered by the ordinary
+General Public License rather than by this special one.
+
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library which
+contains a notice placed by the copyright holder or other authorized
+party saying it may be distributed under the terms of this Library
+General Public License (also called "this License").  Each licensee is
+addressed as "you".
+
+  A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+  The "Library", below, refers to any such software library or work
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+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language.  (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+  "Source code" for a work means the preferred form of the work for
+making modifications to it.  For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+  Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it).  Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+  
+  1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+  You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+  2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) The modified work must itself be a software library.
+
+    b) You must cause the files modified to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    c) You must cause the whole of the work to be licensed at no
+    charge to all third parties under the terms of this License.
+
+    d) If a facility in the modified Library refers to a function or a
+    table of data to be supplied by an application program that uses
+    the facility, other than as an argument passed when the facility
+    is invoked, then you must make a good faith effort to ensure that,
+    in the event an application does not supply such function or
+    table, the facility still operates, and performs whatever part of
+    its purpose remains meaningful.
+
+    (For example, a function in a library to compute square roots has
+    a purpose that is entirely well-defined independent of the
+    application.  Therefore, Subsection 2d requires that any
+    application-supplied function or table used by this function must
+    be optional: if the application does not supply it, the square
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+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Library,
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+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
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+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
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+
+In addition, mere aggregation of another work not based on the Library
+with the Library (or with a work based on the Library) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may opt to apply the terms of the ordinary GNU General Public
+License instead of this License to a given copy of the Library.  To do
+this, you must alter all the notices that refer to this License, so
+that they refer to the ordinary GNU General Public License, version 2,
+instead of to this License.  (If a newer version than version 2 of the
+ordinary GNU General Public License has appeared, then you can specify
+that version instead if you wish.)  Do not make any other change in
+these notices.
+
+  Once this change is made in a given copy, it is irreversible for
+that copy, so the ordinary GNU General Public License applies to all
+subsequent copies and derivative works made from that copy.
+
+  This option is useful when you wish to copy part of the code of
+the Library into a program that is not a library.
+
+  4. You may copy and distribute the Library (or a portion or
+derivative of it, under Section 2) in object code or executable form
+under the terms of Sections 1 and 2 above provided that you accompany
+it with the complete corresponding machine-readable source code, which
+must be distributed under the terms of Sections 1 and 2 above on a
+medium customarily used for software interchange.
+
+  If distribution of object code is made by offering access to copy
+from a designated place, then offering equivalent access to copy the
+source code from the same place satisfies the requirement to
+distribute the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  5. A program that contains no derivative of any portion of the
+Library, but is designed to work with the Library by being compiled or
+linked with it, is called a "work that uses the Library".  Such a
+work, in isolation, is not a derivative work of the Library, and
+therefore falls outside the scope of this License.
+
+  However, linking a "work that uses the Library" with the Library
+creates an executable that is a derivative of the Library (because it
+contains portions of the Library), rather than a "work that uses the
+library".  The executable is therefore covered by this License.
+Section 6 states terms for distribution of such executables.
+
+  When a "work that uses the Library" uses material from a header file
+that is part of the Library, the object code for the work may be a
+derivative work of the Library even though the source code is not.
+Whether this is true is especially significant if the work can be
+linked without the Library, or if the work is itself a library.  The
+threshold for this to be true is not precisely defined by law.
+
+  If such an object file uses only numerical parameters, data
+structure layouts and accessors, and small macros and small inline
+functions (ten lines or less in length), then the use of the object
+file is unrestricted, regardless of whether it is legally a derivative
+work.  (Executables containing this object code plus portions of the
+Library will still fall under Section 6.)
+
+  Otherwise, if the work is a derivative of the Library, you may
+distribute the object code for the work under the terms of Section 6.
+Any executables containing that work also fall under Section 6,
+whether or not they are linked directly with the Library itself.
+
+  6. As an exception to the Sections above, you may also compile or
+link a "work that uses the Library" with the Library to produce a
+work containing portions of the Library, and distribute that work
+under terms of your choice, provided that the terms permit
+modification of the work for the customer's own use and reverse
+engineering for debugging such modifications.
+
+  You must give prominent notice with each copy of the work that the
+Library is used in it and that the Library and its use are covered by
+this License.  You must supply a copy of this License.  If the work
+during execution displays copyright notices, you must include the
+copyright notice for the Library among them, as well as a reference
+directing the user to the copy of this License.  Also, you must do one
+of these things:
+
+    a) Accompany the work with the complete corresponding
+    machine-readable source code for the Library including whatever
+    changes were used in the work (which must be distributed under
+    Sections 1 and 2 above); and, if the work is an executable linked
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+    uses the Library", as object code and/or source code, so that the
+    user can modify the Library and then relink to produce a modified
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+    Library will not necessarily be able to recompile the application
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+
+    b) Accompany the work with a written offer, valid for at
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+
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+
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+
+  For an executable, the required form of the "work that uses the
+Library" must include any data and utility programs needed for
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+the source code distributed need not include anything that is normally
+distributed (in either source or binary form) with the major
+components (compiler, kernel, and so on) of the operating system on
+which the executable runs, unless that component itself accompanies
+the executable.
+
+  It may happen that this requirement contradicts the license
+restrictions of other proprietary libraries that do not normally
+accompany the operating system.  Such a contradiction means you cannot
+use both them and the Library together in an executable that you
+distribute.
+
+  7. You may place library facilities that are a work based on the
+Library side-by-side in a single library together with other library
+facilities not covered by this License, and distribute such a combined
+library, provided that the separate distribution of the work based on
+the Library and of the other library facilities is otherwise
+permitted, and provided that you do these two things:
+
+    a) Accompany the combined library with a copy of the same work
+    based on the Library, uncombined with any other library
+    facilities.  This must be distributed under the terms of the
+    Sections above.
+
+    b) Give prominent notice with the combined library of the fact
+    that part of it is a work based on the Library, and explaining
+    where to find the accompanying uncombined form of the same work.
+
+  8. You may not copy, modify, sublicense, link with, or distribute
+the Library except as expressly provided under this License.  Any
+attempt otherwise to copy, modify, sublicense, link with, or
+distribute the Library is void, and will automatically terminate your
+rights under this License.  However, parties who have received copies,
+or rights, from you under this License will not have their licenses
+terminated so long as such parties remain in full compliance.
+
+  9. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Library or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Library (or any work based on the
+Library), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Library or works based on it.
+
+  10. Each time you redistribute the Library (or any work based on the
+Library), the recipient automatically receives a license from the
+original licensor to copy, distribute, link with or modify the Library
+subject to these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  11. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
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+the only way you could satisfy both it and this License would be to
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+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply,
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+
+It is not the purpose of this section to induce you to infringe any
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+through that system in reliance on consistent application of that
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+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  12. If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Library under this License may add
+an explicit geographical distribution limitation excluding those countries,
+so that distribution is permitted only in or among countries not thus
+excluded.  In such case, this License incorporates the limitation as if
+written in the body of this License.
+
+  13. The Free Software Foundation may publish revised and/or new
+versions of the Library General Public License from time to time.
+Such new versions will be similar in spirit to the present version,
+but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Library
+specifies a version number of this License which applies to it and
+"any later version", you have the option of following the terms and
+conditions either of that version or of any later version published by
+the Free Software Foundation.  If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+  14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission.  For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this.  Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+			    NO WARRANTY
+
+  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+     Appendix: How to Apply These Terms to Your New Libraries
+
+  If you develop a new library, and you want it to be of the greatest
+possible use to the public, we recommend making it free software that
+everyone can redistribute and change.  You can do so by permitting
+redistribution under these terms (or, alternatively, under the terms of the
+ordinary General Public License).
+
+  To apply these terms, attach the following notices to the library.  It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+    MA 02111-1307, USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!

contrib/gcc/NEWS

@@ -0,0 +1,735 @@
+Noteworthy changes in GCC version 2.7.2:
+
+A few bugs have been fixed (most notably the generation of an
+invalid assembler opcode on some RS/6000 systems).
+
+Noteworthy changes in GCC version 2.7.1:
+
+This release fixes numerous bugs (mostly minor) in GCC 2.7.0, but
+also contains a few new features, mostly related to specific targets.
+
+Major changes have been made in code to support Windows NT.
+
+The following new targets are supported:
+
+	2.9 BSD on PDP-11
+	Linux on m68k
+	HP/UX version 10 on HP PA RISC (treated like version 9)
+	DEC Alpha running Windows NT
+
+When parsing C, GCC now recognizes C++ style `//' comments unless you
+specify `-ansi' or `-traditional'.
+
+The PowerPC System V targets (powerpc-*-sysv, powerpc-*-eabi) now use the
+calling sequence specified in the System V Application Binary Interface
+Processor Supplement (PowerPC Processor ABI Supplement) rather than the calling
+sequence used in GCC version 2.7.0.  That calling sequence was based on the AIX
+calling sequence without function descriptors.  To compile code for that older
+calling sequence, either configure the compiler for powerpc-*-eabiaix or use
+the -mcall-aix switch when compiling and linking.
+
+Noteworthy changes in GCC version 2.7.0:
+
+GCC now works better on systems that use ".obj" and ".exe" instead of
+".o" and no extension.  This involved changes to the driver program,
+gcc.c, to convert ".o" names to ".obj" and to GCC's Makefile to use
+".obj" and ".exe" in filenames that are not targets.  In order to
+build GCC on such systems, you may need versions of GNU make and/or
+compatible shells.  At this point, this support is preliminary.
+
+Object file extensions of ".obj" and executable file extensions of
+".exe" are allowed when using appropriate version of GNU Make.
+
+Numerous enhancements were made to the __attribute__ facility including
+more attributes and more places that support it.  We now support the
+"packed", "nocommon", "noreturn", "volatile", "const", "unused",
+"transparent_union", "constructor", "destructor", "mode", "section",
+"align", "format", "weak", and "alias" attributes.  Each of these
+names may also be specified with added underscores, e.g., "__packed__".
+__attribute__ may now be applied to parameter definitions, function
+definitions, and structure, enum, and union definitions.
+
+GCC now supports returning more structures in registers, as specified by
+many calling sequences (ABIs), such as on the HP PA RISC.
+
+A new option '-fpack-struct' was added to automatically pack all structure
+members together without holes.
+
+There is a new library (cpplib) and program (cppmain) that at some
+point will replace cpp (aka cccp).  To use cppmain as cpp now, pass
+the option CCCP=cppmain to make.  The library is already used by the
+fix-header program, which should speed up the fixproto script.
+
+New options for supported targets:
+
+    GNU on many targets.
+    NetBSD on MIPS, m68k, VAX, and x86.
+    LynxOS on x86, m68k, Sparc, and RS/6000.
+    VxWorks on many targets.
+
+    Windows/NT on x86 architecture.  Initial support for Windows/NT on Alpha
+    (not fully working).
+
+    Many embedded targets, specifically UDI on a29k, aout, coff, elf,
+    and vsta "operating systems" on m68k, m88k, mips, sparc, and x86.
+
+Additional support for x86 (i386, i486, and Pentium):
+
+    Work with old and new linkers for Linux-based GNU systems,
+	supporting both a.out and ELF.
+    FreeBSD on x86.
+    Stdcall convention.
+    -malign-double, -mregparm=, -malign-loops= and -malign-jumps=  switches.
+    On ISC systems, support -Xp like -posix.
+
+Additions for RS/6000:
+
+    Instruction scheduling information for PowerPC 403.
+    AIX 4.1 on PowerPC.
+    -mstring and -mno-string.
+    -msoft-float and floating-point emulation included.
+    Preliminary support for PowerPC System V.4 with or without the GNU as.
+    Preliminary support for EABI.
+    Preliminary support for 64-bit systems.
+    Both big and little endian systems.
+
+New features for MIPS-based systems:
+
+    r4650.
+    mips4 and R8000.
+    Irix 6.0.
+    64-bit ABI.
+    Allow dollar signs in labels on SGI/Irix 5.x.
+
+New support for HP PA RISC:
+
+    Generation of PIC (requires binutils-2.5.2.u6 or later).
+    HP-UX version 9 on HP PA RISC (dynamically links even with -g).
+    Processor variants for HP PA RISC: 700, 7100, and 7100LC.
+    Automatic generation of long calls when needed.
+    -mfast-indirect-calls for kernels and static binaries.
+
+    The called routine now copies arguments passed by invisible reference,
+    as required by the calling standard.
+
+Other new miscellaneous target-specific support:
+
+    -mno-multm on a29k.
+    -mold-align for i960.
+    Configuration for "semi-hosted" ARM.
+    -momit-leaf-frame-pointer for M88k.
+    SH3 variant of Hitachi Super-H and support both big and little endian.
+
+Changes to Objective-C:
+
+    Bare-bones implementation of NXConstantString has been added,
+    which is invoked by the @"string" directive.
+
+    Class * has been changed to Class to conform to the NextSTEP and
+    OpenStep runtime.
+
+    Enhancements to make dynamic loading easier.
+
+    The module version number has been updated to Version 7, thus existing
+    code will need to be recompiled to use the current run-time library.
+
+GCC now supports the ISO Normative Addendum 1 to the C Standard.
+As a result:
+
+    The header <iso646.h> defines macros for C programs written
+    in national variants of ISO 646.
+
+    The following digraph tokens are supported:
+	<:	:>	<%	%>	%:	%:%:
+    These behave like the following, respectively:
+	[	]	{	}	#	##
+
+    Digraph tokens are supported unless you specify the `-traditional'
+    option; you do not need to specify `-ansi' or `-trigraphs'.  Except
+    for contrived and unlikely examples involving preprocessor
+    stringizing, digraph interpretation doesn't change the meaning of
+    programs; this is unlike trigraph interpretation, which changes the
+    meanings of relatively common strings.
+
+    The macro __STDC_VERSION__ has the value 199409L.
+
+  As usual, for full conformance to the standard, you also need a
+  C library that conforms.
+
+The following lists changes that have been made to g++.  If some
+features mentioned below sound unfamiliar, you will probably want to
+look at the recently-released public review copy of the C++ Working
+Paper.  For PostScript and PDF (Adobe Acrobat) versions, see the
+archive at ftp://research.att.com/dist/stdc++/WP.  For HTML and ASCII
+versions, see ftp://ftp.cygnus.com/pub/g++.  On the web, see
+http://www.cygnus.com/~mrs/wp-draft.
+
+The scope of variables declared in the for-init-statement has been changed
+to conform to http://www.cygnus.com/~mrs/wp-draft/stmt.html#stmt.for; as a
+result, packages such as groff 1.09 will not compile unless you specify the
+-fno-for-scope flag.  PLEASE DO NOT REPORT THIS AS A BUG; this is a change
+mandated by the C++ standardization committee.
+
+Binary incompatibilities:
+
+    The builtin 'bool' type is now the size of a machine word on RISC targets,
+    for code efficiency; it remains one byte long on CISC targets.
+
+    Code that does not use #pragma interface/implementation will most
+    likely shrink dramatically, as g++ now only emits the vtable for a
+    class in the translation unit where its first non-inline, non-abstract
+    virtual function is defined.
+
+    Classes that do not define the copy constructor will sometimes be
+    passed and returned in registers.  This may illuminate latent bugs in
+    your code.
+
+Support for automatic template instantiation has *NOT* been added, due
+to a disagreement over design philosophies.
+
+Support for exception handling has been improved; more targets are now
+supported, and throws will use the RTTI mechanism to match against the
+catch parameter type.  Optimization is NOT SUPPORTED with
+-fhandle-exceptions; no need to report this as a bug.
+
+Support for Run-Time Type Identification has been added with -frtti.
+This support is still in alpha; one major restriction is that any file
+compiled with -frtti must include <typeinfo.h>.
+
+Preliminary support for namespaces has been added.  This support is far
+from complete, and probably not useful.
+
+Synthesis of compiler-generated constructors, destructors and
+assignment operators is now deferred until the functions are used.
+
+The parsing of expressions such as `a ? b : c = 1' has changed from
+`(a ? b : c) = 1' to `a : b ? (c = 1)'.
+
+The code generated for testing conditions, especially those using ||
+and &&, is now more efficient.
+
+The operator keywords and, and_eq, bitand, bitor, compl, not, not_eq,
+or, or_eq, xor and xor_eq are now supported.  Use -ansi or
+-foperator-names to enable them.
+
+The 'explicit' keyword is now supported.  'explicit' is used to mark
+constructors and type conversion operators that should not be used
+implicitly.
+
+g++ now accepts the typename keyword, though it currently has no
+semantics; it can be a no-op in the current template implementation.
+You may want to start using it in your code, however, since the
+pending rewrite of the template implementation to compile STL properly
+(perhaps for 2.8.0, perhaps not) will require you to use it as
+indicated by the current draft.
+
+Handling of user-defined type conversion has been overhauled so that
+type conversion operators are now found and used properly in
+expressions and function calls.
+
+-fno-strict-prototype now only applies to function declarations with
+"C" linkage.
+
+g++ now warns about 'if (x=0)' with -Wparentheses or -Wall.
+
+#pragma weak and #pragma pack are supported on System V R4 targets, as
+are various other target-specific #pragmas supported by gcc.
+
+new and delete of const types is now allowed (with no additional
+semantics).
+
+Explicit instantiation of template methods is now supported.  Also,
+'inline template class foo<int>;' can be used to emit only the vtable
+for a template class.
+
+With -fcheck-new, g++ will check the return value of all calls to
+operator new, and not attempt to modify a returned null pointer.
+
+The template instantiation code now handles more conversions when
+passing to a parameter that does not depend on template arguments.
+This means that code like 'string s; cout << s;' now works.
+
+Invalid jumps in a switch statement past declarations that require
+initializations are now caught.
+
+Functions declared 'extern inline' now have the same linkage semantics
+as inline member functions.  On supported targets, where previously
+these functions (and vtables, and template instantiations) would have
+been defined statically, they will now be defined as weak symbols so
+that only one out-of-line definition is used.
+
+collect2 now demangles linker output, and c++filt has become part of
+the gcc distribution.
+
+Noteworthy changes in GCC version 2.6.3:
+
+A few more bugs have been fixed.
+
+Noteworthy changes in GCC version 2.6.2:
+
+A few bugs have been fixed.
+
+Names of attributes can now be preceded and followed by double underscores.
+
+Noteworthy changes in GCC version 2.6.1:
+
+Numerous (mostly minor) bugs have been fixed.
+
+The following new configurations are supported:
+
+	GNU on x86 (instead of treating it like MACH)
+	NetBSD on Sparc and Motorola 68k
+	AIX 4.1 on RS/6000 and PowerPC systems
+	Sequent DYNUX/ptx 1.x and 2.x.
+	Both COFF and ELF configurations on AViiON without using /bin/gcc
+	Windows/NT on x86 architecture; preliminary
+	AT&T DSP1610 digital signal processor chips
+	i960 systems on bare boards using COFF
+	PDP11; target only and not extensively tested
+
+The -pg option is now supported for Alpha under OSF/1 V3.0 or later.
+
+Files with an extension of ".c++" are treated as C++ code.
+
+The -Xlinker and -Wl arguments are now passed to the linker in the
+position they were specified on the command line.  This makes it
+possible, for example, to pass flags to the linker about specific
+object files.
+
+The use of positional arguments to the configure script is no longer
+recommended.  Use --target= to specify the target; see the GCC manual.
+
+The 386 now supports two new switches: -mreg-alloc=<string> changes
+the default register allocation order used by the compiler, and
+-mno-wide-multiply disables the use of the mul/imul instructions that
+produce 64 bit results in EAX:EDX from 32 bit operands to do long long
+multiplies and 32-bit division by constants.
+
+Noteworthy changes in GCC version 2.6.0:
+
+Numerous bugs have been fixed, in the C and C++ front-ends, as
+well as in the common compiler code.
+
+This release includes the C, Objective-C, and C++ compilers.  However,
+we have moved the files for the C++ compiler (G++) files to a
+subdirectory, cp.  Subsequent releases of GCC will split these files
+to a separate TAR file.
+
+The G++ team has been tracking the development of the ANSI standard for C++.
+Here are some new features added from the latest working paper:
+
+	* built-in boolean type 'bool', with constants 'true' and 'false'.
+	* array new and delete (operator new [] and delete []).
+	* WP-conforming lifetime of temporaries.
+	* explicit instantiation of templates (template class A<int>;),
+          along with an option (-fno-implicit-templates) to disable emission
+          of implicitly instantiated templates, obsoletes -fexternal-templates.
+	* static member constants (static const int foo = 4; within the
+          class declaration).
+
+Many error messages have been improved to tell the user more about the
+problem.  Conformance checking with -pedantic-errors has been
+improved.  G++ now compiles Fresco.
+
+There is now an experimental implementation of virtual functions using
+thunks instead of Cfront-style vtables, enabled with -fvtable-thunks.
+This option also enables a heuristic which causes the compiler to only
+emit the vtable in the translation unit where its first non-inline
+virtual function is defined; using this option and
+-fno-implicit-templates, users should be able to avoid #pragma
+interface/implementation altogether.
+
+Signatures have been added as a GNU C++ extension.  Using the option
+-fhandle-signatures, users are able to turn on recognition of
+signatures.  A short introduction on signatures is in the section
+`Extension to the C++ Language' in the manual.
+
+The `g++' program is now a C program, rather than a shell script.
+
+Lots and lots and lots of bugs fixes, in nested types, access control,
+pointers to member functions, the parser, templates, overload
+resolution, etc, etc.
+
+There have been two major enhancements to the Objective-C compiler:
+
+1) Added portability.  It now runs on Alpha, and some problems with
+   message forwarding have been addressed on other platforms.
+
+2) Selectors have been redefined to be pointers to structs like:
+   { void *sel_id, char *sel_types }, where the sel_id is the unique
+   identifier, the selector itself is no longer unique.  
+
+   Programmers should use the new function sel_eq to test selector
+   equivalence.
+
+The following major changes have been made to the base compiler and
+machine-specific files.
+
+- The MIL-STD-1750A is a new port, but still preliminary.
+
+- The h8/300h is now supported; both the h8/300 and h8/300h ports come
+  with 32 bit IEEE 754 software floating point support.
+
+- The 64-bit Sparc (v9) and 64-bit MIPS chips are supported.
+
+- NetBSD is supported on m68k, Intel x86, and pc523 systems and FreeBSD
+  on x86.
+
+- COFF is supported on x86, m68k, and Sparc systems running LynxOS.
+
+- 68K systems from Bull and Concurrent are supported and System V
+  Release 4 is supported on the Atari.
+
+- GCC supports GAS on the Motorola 3300 (sysV68) and debugging
+  (assuming GAS) on the Plexus 68K system.  (However, GAS does not yet
+  work on those systems).
+
+- System V Release 4 is supported on MIPS (Tandem).
+
+- For DG/UX, an ELF configuration is now supported, and both the ELF
+  and BCS configurations support ELF and COFF object file formats.
+
+- OSF/1 V2.0 is supported on Alpha.
+
+- Function profiling is also supported on Alpha.
+
+- GAS and GDB is supported for Irix 5 (MIPS).
+
+- "common mode" (code that will run on both POWER and PowerPC
+  architectures) is now supported for the RS/6000 family; the
+  compiler knows about more PPC chips.
+
+- Both NeXTStep 2.1 and 3 are supported on 68k-based architectures.
+
+- On the AMD 29k, the -msoft-float is now supported, as well as
+  -mno-sum-in-toc for RS/6000, -mapp-regs and -mflat for Sparc, and
+  -membedded-pic for MIPS.
+
+- GCC can now convert division by integer constants into the equivalent
+  multiplication and shift operations when that is faster than the
+  division.
+	
+- Two new warning options, -Wbad-function-cast and
+  -Wmissing-declarations have been added.
+
+- Configurations may now add machine-specific __attribute__ options on
+  type; many machines support the `section' attribute.
+
+- The -ffast-math flag permits some optimization that violate strict
+  IEEE rules, such as converting X * 0.0 to 0.0.
+
+Noteworthy changes in GCC version 2.5.8:
+
+This release only fixes a few serious bugs.  These include fixes for a
+bug that prevented most programs from working on the RS/6000, a bug
+that caused invalid assembler code for programs with a `switch'
+statement on the NS32K, a G++ problem that caused undefined names in
+some configurations, and several less serious problems, some of which
+can affect most configuration.
+
+Noteworthy change in GCC version 2.5.7:
+
+This release only fixes a few bugs, one of which was causing bootstrap
+compare errors on some systems.
+
+Noteworthy change in GCC version 2.5.6:
+
+A few backend bugs have been fixed, some of which only occur on one
+machine.
+
+The C++ compiler in 2.5.6 includes:
+
+ * fixes for some common crashes
+ * correct handling of nested types that are referenced as `foo::bar'
+ * spurious warnings about friends being declared static and never
+   defined should no longer appear
+ * enums that are local to a method in a class, or a class that's
+   local to a function, are now handled correctly.  For example:
+       class foo { void bar () { enum { x, y } E; x; } };
+       void bar () { class foo { enum { x, y } E; E baz; }; }
+
+Noteworthy change in GCC version 2.5.5:
+
+A large number of C++ bugs have been fixed.
+
+The fixproto script adds prototypes conditionally on __cplusplus.
+
+Noteworthy change in GCC version 2.5.4:
+
+A bug fix in passing of structure arguments for the HP-PA architecture
+makes code compiled with GCC 2.5.4 incompatible with code compiled
+with earlier versions (if it passes struct arguments of 33 to 64 bits,
+interspersed with other types of arguments).
+
+Noteworthy change in gcc version 2.5.3:
+
+The method of "mangling" C++ function names has been changed.  So you
+must recompile all C++ programs completely when you start using GCC
+2.5.  Also, GCC 2.5 requires libg++ version 2.5.  Earlier libg++
+versions won't work with GCC 2.5.  (This is generally true--GCC
+version M.N requires libg++ version M.N.)
+
+Noteworthy GCC changes in version 2.5:
+
+* There is now support for the IBM 370 architecture as a target.
+Currently the only operating system supported is MVS; GCC does not run
+on MVS, so you must produce .s files using GCC as a cross compiler,
+then transfer them to MVS to assemble them.  This port is not reliable
+yet.
+
+* The Power PC is now supported.
+
+* The i860-based Paragon machine is now supported.
+
+* The Hitachi 3050 (an HP-PA machine) is now supported.
+
+* The variable __GNUC_MINOR__ holds the minor version number of GCC, as
+an integer.  For version 2.5.X, the value is 5.
+
+* In C, initializers for static and global variables are now processed
+an element at a time, so that they don't need a lot of storage.
+
+* The C syntax for specifying which structure field comes next in an
+initializer is now `.FIELDNAME='.  The corresponding syntax for
+array initializers is now `[INDEX]='.  For example,
+
+  char whitespace[256]
+    = { [' '] = 1, ['\t'] = 1, ['\n'] = 1 };
+
+This was changed to accord with the syntax proposed by the Numerical
+C Extensions Group (NCEG).
+
+* Complex numbers are now supported in C.  Use the keyword __complex__
+to declare complex data types.  See the manual for details.
+
+* GCC now supports `long double' meaningfully on the Sparc (128-bit
+floating point) and on the 386 (96-bit floating point).  The Sparc
+support is enabled on on Solaris 2.x because earlier system versions
+(SunOS 4) have bugs in the emulation.
+
+* All targets now have assertions for cpu, machine and system.  So you
+can now use assertions to distinguish among all supported targets.
+
+* Nested functions in C may now be inline.  Just declare them inline
+in the usual way.
+
+* Packed structure members are now supported fully; it should be possible 
+to access them on any supported target, no matter how little alignment
+they have.
+
+* To declare that a function does not return, you must now write
+something like this (works only in 2.5):
+
+    void fatal () __attribute__ ((noreturn));
+
+or like this (works in older versions too):
+
+    typedef void voidfn ();
+
+    volatile voidfn fatal;
+
+It used to be possible to do so by writing this:
+
+    volatile void fatal ();
+
+but it turns out that ANSI C requires that to mean something
+else (which is useless).
+
+Likewise, to declare that a function is side-effect-free
+so that calls may be deleted or combined, write
+something like this (works only in 2.5):
+
+    int computation () __attribute__ ((const));
+
+or like this (works in older versions too):
+
+    typedef int intfn ();
+
+    const intfn computation;
+
+* The new option -iwithprefixbefore specifies a directory to add to 
+the search path for include files in the same position where -I would
+put it, but uses the specified prefix just like -iwithprefix.
+
+* Basic block profiling has been enhanced to record the function the
+basic block comes from, and if the module was compiled for debugging,
+the line number and filename.  A default version of the basic block
+support module has been added to libgcc2 that appends the basic block
+information to a text file 'bb.out'.  Machine descriptions can now
+override the basic block support module in the target macro file.
+
+New features in g++:
+
+* The new flag `-fansi-overloading' for C++.  Use a newly implemented
+scheme of argument matching for C++.  It makes g++ more accurately
+obey the rules set down in Chapter 13 of the Annotated C++ Reference
+Manual (the ARM).  This option will be turned on by default in a
+future release.
+
+* The -finline-debug flag is now gone (it was never really used by the
+  compiler).
+
+* Recognizing the syntax for pointers to members, e.g., "foo::*bar", has been
+  dramatically improved.  You should not get any syntax errors or incorrect
+  runtime results while using pointers to members correctly; if you do, it's
+  a definite bug.
+
+* Forward declaration of an enum is now flagged as an error.
+
+* Class-local typedefs are now working properly.
+
+* Nested class support has been significantly improved.  The compiler
+  will now (in theory) support up to 240 nested classes before hitting
+  other system limits (like memory size).
+
+* There is a new C version of the `g++' driver, to replace the old
+  shell script.  This should significantly improve the performance of
+  executing g++ on a system where a user's PATH environment variable
+  references many NFS-mounted filesystems.  This driver also works
+  under MS-DOS and OS/2.
+
+* The ANSI committee working on the C++ standard has adopted a new
+  keyword `mutable'.  This will allow you to make a specific member be
+  modifiable in an otherwise const class.
+
+Noteworthy GCC changes in version 2.4.4:
+
+  A crash building g++ on various hosts (including m68k) has been
+  fixed.  Also the g++ compiler no longer reports incorrect
+  ambiguities in some situations where they do not exist, and
+  const template member functions are now being found properly.
+
+Noteworthy GCC changes in version 2.4:
+
+* On each target, the default is now to return short structures
+compatibly with the "usual" compiler on that target.
+
+For most targets, this means the default is to return all structures
+in memory, like long structures, in whatever way is used on that
+target.  Use -freg-struct-return to enable returning short structures
+(and unions) in registers.
+
+This change means that newly compiled binaries are incompatible with
+binaries compiled with previous versions of GCC.
+
+On some targets, GCC is itself the usual compiler.  On these targets,
+the default way to return short structures is still in registers.
+Use -fpcc-struct-return to tell GCC to return them in memory.
+
+* There is now a floating point emulator which can imitate the way all
+supported target machines do floating point arithmetic.
+
+This makes it possible to have cross compilation to and from the VAX,
+and between machines of different endianness.  However, this works
+only when the target machine description is updated to use the new
+facilities, and not all have been updated.
+
+This also makes possible support for longer floating point types.
+GCC 2.4 supports extended format on the 68K if you use `long double',
+for targets that have a 68881.  (When we have run time library
+routines for extended floating point, then `long double' will use
+extended format on all 68K targets.)
+
+We expect to support extended floating point on the i386 and Sparc in
+future versions.
+
+* Building GCC now automatically fixes the system's header files.
+This should require no attention.
+
+* GCC now installs an unsigned data type as size_t when it fixes the
+header files (on all but a handful of old target machines).
+Therefore, the bug that size_t failed to be unsigned is fixed.
+
+* Building and installation are now completely separate.
+All new files are constructed during the build process; 
+installation just copies them.
+
+* New targets supported: Clipper, Hitachi SH, Hitachi 8300, and Sparc
+Lite.
+
+* A totally new and much better Objective C run time system is included.
+
+* Objective C supports many new features.  Alas, I can't describe them
+since I don't use that language; however, they are the same ones 
+supported in recent versions of the NeXT operating system.
+
+* The builtin functions __builtin_apply_args, __builtin_apply and
+__builtin_return let you record the arguments and returned
+value of a function without knowing their number or type.
+
+* The builtin string variables __FUNCTION__ and __PRETTY_FUNCTION__
+give the name of the function in the source, and a pretty-printed
+version of the name.  The two are the same in C, but differ in C++.
+
+* Casts to union types do not yield lvalues.
+
+* ## before an empty rest argument discards the preceding sequence
+of non-whitespace characters from the macro definition.
+(This feature is subject to change.)
+
+
+New features specific to C++:
+
+* The manual contains a new section ``Common Misunderstandings with
+GNU C++'' that C++ users should read.
+
+* #pragma interface and #pragma implementation let you use the same
+C++ source file for both interface and implementation.
+However, this mechanism is still in transition.
+
+* Named returned values let you avoid an extra constructor call
+when a function result has a class type.
+
+* The C++ operators <? and >? yield min and max, respectively.
+
+* C++ gotos can exit a block safely even if the block has
+aggregates that require destructors.
+
+* gcc defines the macro __GNUG__ when compiling C++ programs.
+
+* GNU C++ now correctly distinguishes between the prefix and postfix
+forms of overloaded operator ++ and --.  To avoid breaking old
+code, if a class defines only the prefix form, the compiler
+accepts either ++obj or obj++, unless -pedantic is used.
+
+* If you are using version 2.3 of libg++, you need to rebuild it with
+`make CC=gcc' to avoid mismatches in the definition of `size_t'.
+
+Newly documented compiler options:
+
+-fnostartfiles
+	Omit the standard system startup files when linking.
+
+-fvolatile-global
+	Consider memory references to extern and global data items to
+	be volatile.
+
+-idirafter DIR
+	Add DIR to the second include path.
+
+-iprefix PREFIX
+	Specify PREFIX for later -iwithprefix options.
+
+-iwithprefix DIR
+	Add PREFIX/DIR to the second include path.
+
+-mv8
+	Emit Sparc v8 code (with integer multiply and divide).
+-msparclite
+	Emit Sparclite code (roughly v7.5).
+
+-print-libgcc-file-name
+	Search for the libgcc.a file, print its absolute file name, and exit.
+
+-Woverloaded-virtual
+	Warn when a derived class function declaration may be an error
+	in defining a C++ virtual function. 
+
+-Wtemplate-debugging
+	When using templates in a C++ program, warn if debugging is
+	not yet fully available.
+
++eN
+	Control how C++ virtual function definitions are used
+	(like cfront 1.x).
+

contrib/gcc/PROBLEMS

@@ -0,0 +1,117 @@
+3. When find_reloads is used to count number of spills needed
+it does not take into account the fact that a reload may
+turn out to be a dummy.
+
+I'm not sure this really happens any more.  Doesn't it find
+all the dummies on both passes?
+
+10.     movl a3@,a0
+	movl a3@(16),a1
+	clrb a0@(a1:l)
+is generated and may be worse than
+	movl a3@,a0