152 lines
4.4 KiB
CMake
152 lines
4.4 KiB
CMake
include(CheckTypeSize)
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include(CheckSymbolExists)
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include(CheckFunctionExists)
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include(CheckIncludeFiles)
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include(CheckCSourceRuns)
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include(CheckCSourceCompiles)
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check_type_size("int" SIZEOF_INT)
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check_type_size("long" SIZEOF_LONG)
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check_type_size("intmax_t" SIZEOF_INTMAX_T)
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check_type_size("size_t" SIZEOF_SIZE_T)
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check_type_size("long long" SIZEOF_LONG_LONG)
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check_type_size("void *" SIZEOF_VOID_PTR)
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if (CMAKE_HOST_SYSTEM_VERSION MATCHES ".*-Microsoft")
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# Windows Subsystem for Linux
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set(HAVE_WSL 1)
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endif()
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check_symbol_exists(_NSGetEnviron crt_externs.h HAVE__NSGETENVIRON)
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# Headers
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check_include_files(langinfo.h HAVE_LANGINFO_H)
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check_include_files(locale.h HAVE_LOCALE_H)
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check_include_files(pwd.h HAVE_PWD_H)
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check_include_files(strings.h HAVE_STRINGS_H)
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check_include_files(sys/wait.h HAVE_SYS_WAIT_H)
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if(NOT HAVE_SYS_WAIT_H AND UNIX)
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# See if_cscope.c
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message(SEND_ERROR "header sys/wait.h is required for Unix")
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endif()
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check_include_files(sys/utsname.h HAVE_SYS_UTSNAME_H)
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check_include_files(termios.h HAVE_TERMIOS_H)
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check_include_files(sys/uio.h HAVE_SYS_UIO_H)
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# Functions
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check_function_exists(fseeko HAVE_FSEEKO)
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check_function_exists(getpwent HAVE_GETPWENT)
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check_function_exists(getpwnam HAVE_GETPWNAM)
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check_function_exists(getpwuid HAVE_GETPWUID)
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check_function_exists(readv HAVE_READV)
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if(Iconv_FOUND)
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set(HAVE_ICONV 1)
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endif()
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check_function_exists(opendir HAVE_OPENDIR)
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check_function_exists(readlink HAVE_READLINK)
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check_function_exists(setpgid HAVE_SETPGID)
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check_function_exists(setsid HAVE_SETSID)
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check_function_exists(sigaction HAVE_SIGACTION)
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check_function_exists(strcasecmp HAVE_STRCASECMP)
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check_function_exists(strncasecmp HAVE_STRNCASECMP)
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# Symbols
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check_symbol_exists(FD_CLOEXEC "fcntl.h" HAVE_FD_CLOEXEC)
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if(HAVE_LANGINFO_H)
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check_symbol_exists(CODESET "langinfo.h" HAVE_NL_LANGINFO_CODESET)
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endif()
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check_include_files("endian.h" HAVE_ENDIAN_H)
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check_include_files("sys/endian.h" HAVE_SYS_ENDIAN_H)
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set(ENDIAN_INCLUDE_FILE "endian.h")
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if(HAVE_SYS_ENDIAN_H AND NOT HAVE_ENDIAN_H)
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set(ENDIAN_INCLUDE_FILE "sys/endian.h")
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endif()
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set(SI "#include <stdint.h>\n")
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set(MS "int main(int argc,char**argv)\n{\n uint64_t i=0x0102030405060708ULL;")
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set(ME "}")
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check_c_source_compiles("
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#define _BSD_SOURCE 1
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#define _DEFAULT_SOURCE 1
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${SI}
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#include <${ENDIAN_INCLUDE_FILE}>
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#ifndef be64toh
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# error No be64toh macros
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#endif
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${MS}
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uint64_t j = be64toh(i);
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return (j == 0); // j must not be zero
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${ME}"
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HAVE_BE64TOH_MACROS)
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if(NOT "${HAVE_BE64TOH_MACROS}")
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check_function_exists(be64toh HAVE_BE64TOH_FUNC)
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endif()
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if("${HAVE_BE64TOH_MACROS}" OR "${HAVE_BE64TOH_FUNC}")
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set(HAVE_BE64TOH 1)
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endif()
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if (NOT "${HAVE_BE64TOH}")
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if (NOT "${CMAKE_CROSSCOMPILING}")
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# It is safe to make ORDER_BIG_ENDIAN not defined if
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# - HAVE_BE64TOH is true. In this case be64toh will be used unconditionally in
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# any case and ORDER_BIG_ENDIAN will not be examined.
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# - CMAKE_CROSSCOMPILING *and* HAVE_BE64TOH are both false. In this case
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# be64toh function which uses cycle and arithmetic operations is used which
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# will work regardless of endianess. Function is sub-optimal though.
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check_c_source_runs("
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${SI}
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${MS}
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char *s = (char *) &i;
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return (
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s[0] == 0x01
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&& s[1] == 0x02
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&& s[2] == 0x03
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&& s[3] == 0x04
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&& s[4] == 0x05
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&& s[5] == 0x06
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&& s[6] == 0x07
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&& s[7] == 0x08) ? 0 : 1;
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${ME}"
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ORDER_BIG_ENDIAN)
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endif()
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endif()
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# generate configuration header and update include directories
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configure_file (
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"${PROJECT_SOURCE_DIR}/config/config.h.in"
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"${PROJECT_BINARY_DIR}/config/auto/config.h"
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)
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# generate version definitions
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configure_file (
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"${PROJECT_SOURCE_DIR}/config/versiondef.h.in"
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"${PROJECT_BINARY_DIR}/config/auto/versiondef.h"
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)
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# generate pathdef.c
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find_program(WHOAMI_PROG whoami)
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find_program(HOSTNAME_PROG hostname)
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if (DEFINED ENV{USERNAME})
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set(USERNAME $ENV{USERNAME})
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elseif (NOT DEFINED USERNAME AND EXISTS ${WHOAMI_PROG})
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execute_process(COMMAND ${WHOAMI_PROG}
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OUTPUT_STRIP_TRAILING_WHITESPACE
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OUTPUT_VARIABLE USERNAME)
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endif()
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if (DEFINED ENV{HOSTNAME})
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set(HOSTNAME $ENV{HOSTNAME})
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elseif (EXISTS ${HOSTNAME_PROG})
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execute_process(COMMAND ${HOSTNAME_PROG}
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OUTPUT_STRIP_TRAILING_WHITESPACE
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OUTPUT_VARIABLE HOSTNAME)
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endif()
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configure_file (
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"${PROJECT_SOURCE_DIR}/config/pathdef.c.in"
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"${PROJECT_BINARY_DIR}/config/auto/pathdef.c"
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ESCAPE_QUOTES)
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