117 lines
4.6 KiB
Plaintext
117 lines
4.6 KiB
Plaintext
# config/perl.m4
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# PGAC_PATH_PERL
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# --------------
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AC_DEFUN([PGAC_PATH_PERL],
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[PGAC_PATH_PROGS(PERL, perl)
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AC_ARG_VAR(PERL, [Perl program])dnl
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if test "$PERL"; then
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pgac_perl_version=`$PERL -v 2>/dev/null | sed -n ['s/This is perl.*v[a-z ]*\([0-9]\.[0-9][0-9.]*\).*$/\1/p']`
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AC_MSG_NOTICE([using perl $pgac_perl_version])
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if echo "$pgac_perl_version" | sed ['s/[.a-z_]/ /g'] | \
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$AWK '{ if ([$]1 == 5 && ([$]2 >= 14)) exit 1; else exit 0;}'
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then
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AC_MSG_ERROR([
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*** The installed version of Perl, $PERL, is too old to use with PostgreSQL.
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*** Perl version 5.14 or later is required, but this is $pgac_perl_version.])
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fi
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fi
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if test -z "$PERL"; then
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AC_MSG_ERROR([Perl not found])
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fi
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])# PGAC_PATH_PERL
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# PGAC_CHECK_PERL_CONFIG(NAME)
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# ----------------------------
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AC_DEFUN([PGAC_CHECK_PERL_CONFIG],
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[AC_REQUIRE([PGAC_PATH_PERL])
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AC_MSG_CHECKING([for Perl $1])
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perl_$1=`$PERL -MConfig -e 'print $Config{$1}'`
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test "$PORTNAME" = "win32" && perl_$1=`echo $perl_$1 | sed 's,\\\\,/,g'`
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AC_SUBST(perl_$1)dnl
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AC_MSG_RESULT([$perl_$1])])
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# PGAC_CHECK_PERL_CONFIGS(NAMES)
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# ------------------------------
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AC_DEFUN([PGAC_CHECK_PERL_CONFIGS],
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[m4_foreach([pgac_item], [$1], [PGAC_CHECK_PERL_CONFIG(pgac_item)])])
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# PGAC_CHECK_PERL_EMBED_CCFLAGS
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# -----------------------------
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# We selectively extract stuff from $Config{ccflags}. For debugging purposes,
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# let's have the configure output report the raw ccflags value as well as the
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# set of flags we chose to adopt. We don't really need anything except -D
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# switches, and other sorts of compiler switches can actively break things if
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# Perl was compiled with a different compiler. Moreover, although Perl likes
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# to put stuff like -D_LARGEFILE_SOURCE and -D_FILE_OFFSET_BITS=64 here, it
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# would be fatal to try to compile PL/Perl to a different libc ABI than core
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# Postgres uses. The available information says that most symbols that affect
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# Perl's own ABI begin with letters, so it's almost sufficient to adopt -D
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# switches for symbols not beginning with underscore.
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# Some exceptions are the Windows-specific -D_USE_32BIT_TIME_T and
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# -D__MINGW_USE_VC2005_COMPAT. To be exact, Windows offers several 32-bit ABIs.
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# Perl is sensitive to sizeof(time_t), one of the ABI dimensions. PostgreSQL
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# doesn't support building with pre-MSVC-2005 compilers, but it does support
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# linking to Perl built with such a compiler. MSVC-built Perl 5.13.4 and
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# later report -D_USE_32BIT_TIME_T in $Config{ccflags} if applicable, but
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# MinGW-built Perl never reports -D_USE_32BIT_TIME_T despite typically needing
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# it.
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#
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# Consequently, we don't support using MinGW to link to MSVC-built Perl. As
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# of 2017, all supported ActivePerl and Strawberry Perl are MinGW-built. If
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# that changes or an MSVC-built Perl distribution becomes prominent, we can
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# revisit this limitation.
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AC_DEFUN([PGAC_CHECK_PERL_EMBED_CCFLAGS],
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[AC_REQUIRE([PGAC_PATH_PERL])
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AC_MSG_CHECKING([for CFLAGS recommended by Perl])
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perl_ccflags=`$PERL -MConfig -e ['print $Config{ccflags}']`
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AC_MSG_RESULT([$perl_ccflags])
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AC_MSG_CHECKING([for CFLAGS to compile embedded Perl])
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perl_embed_ccflags=`$PERL -MConfig -e ['foreach $f (split(" ",$Config{ccflags})) {print $f, " " if ($f =~ /^-D[^_]/ || $f =~ /^-D_USE_32BIT_TIME_T/)}']`
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AC_SUBST(perl_embed_ccflags)dnl
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AC_MSG_RESULT([$perl_embed_ccflags])
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])# PGAC_CHECK_PERL_EMBED_CCFLAGS
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# PGAC_CHECK_PERL_EMBED_LDFLAGS
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# -----------------------------
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# We are after Embed's ldopts, but without the subset mentioned in
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# Config's ccdlflags and ldflags. (Those are the choices of those who
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# built the Perl installation, which are not necessarily appropriate
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# for building PostgreSQL.)
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AC_DEFUN([PGAC_CHECK_PERL_EMBED_LDFLAGS],
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[AC_REQUIRE([PGAC_PATH_PERL])
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AC_MSG_CHECKING(for flags to link embedded Perl)
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if test "$PORTNAME" = "win32" ; then
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perl_lib=`basename $perl_archlibexp/CORE/perl[[5-9]]*.lib .lib`
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if test -e "$perl_archlibexp/CORE/$perl_lib.lib"; then
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perl_embed_ldflags="-L$perl_archlibexp/CORE -l$perl_lib"
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else
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perl_lib=`basename $perl_archlibexp/CORE/libperl[[5-9]]*.a .a | sed 's/^lib//'`
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if test -e "$perl_archlibexp/CORE/lib$perl_lib.a"; then
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perl_embed_ldflags="-L$perl_archlibexp/CORE -l$perl_lib"
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fi
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fi
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else
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pgac_tmp1=`$PERL -MExtUtils::Embed -e ldopts`
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pgac_tmp2=`$PERL -MConfig -e 'print "$Config{ccdlflags} $Config{ldflags}"'`
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perl_embed_ldflags=`echo X"$pgac_tmp1" | sed -e "s/^X//" -e "s%$pgac_tmp2%%"`
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fi
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AC_SUBST(perl_embed_ldflags)dnl
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if test -z "$perl_embed_ldflags" ; then
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([could not determine flags for linking embedded Perl.
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This probably means that ExtUtils::Embed or ExtUtils::MakeMaker is not
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installed.])
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else
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AC_MSG_RESULT([$perl_embed_ldflags])
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fi
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])# PGAC_CHECK_PERL_EMBED_LDFLAGS
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