638 lines
16 KiB
Plaintext
638 lines
16 KiB
Plaintext
dnl By default, many hosts won't let programs access large files;
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dnl one must use special compiler options to get large-file access to work.
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dnl For more details about this brain damage please see:
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dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html
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dnl Written by Paul Eggert <eggert@twinsun.com>.
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m4_include([M4/gcc_version.m4])
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m4_include([M4/octave.m4])
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m4_include([M4/mkoctfile_version.m4])
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m4_include([M4/extra_pkg.m4])
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m4_include([M4/lrint.m4])
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m4_include([M4/lrintf.m4])
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m4_include([M4/clang.m4])
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m4_include([M4/really_gcc.m4])
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m4_include([M4/stack_protect.m4])
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m4_include([M4/clip_mode.m4])
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m4_include([M4/add_cflags.m4])
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m4_include([M4/add_cxxflags.m4])
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m4_include([M4/flexible_array.m4])
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m4_include([M4/endian.m4])
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m4_include([M4/extra_largefile.m4])
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dnl Internal subroutine of AC_SYS_EXTRA_LARGEFILE.
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dnl AC_SYS_EXTRA_LARGEFILE_FLAGS(FLAGSNAME)
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AC_DEFUN([AC_SYS_EXTRA_LARGEFILE_FLAGS],
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[AC_CACHE_CHECK([for $1 value to request large file support],
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ac_cv_sys_largefile_$1,
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[ac_cv_sys_largefile_$1=`($GETCONF LFS_$1) 2>/dev/null` || {
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ac_cv_sys_largefile_$1=no
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ifelse($1, CFLAGS,
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[case "$host_os" in
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# IRIX 6.2 and later require cc -n32.
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changequote(, )dnl
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irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*)
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changequote([, ])dnl
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if test "$GCC" != yes; then
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ac_cv_sys_largefile_CFLAGS=-n32
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fi
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ac_save_CC="$CC"
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CC="$CC $ac_cv_sys_largefile_CFLAGS"
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AC_TRY_LINK(, , , ac_cv_sys_largefile_CFLAGS=no)
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CC="$ac_save_CC"
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esac])
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}])])
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dnl Internal subroutine of AC_SYS_EXTRA_LARGEFILE.
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dnl AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(VAR, VAL)
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AC_DEFUN([AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND],
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[case $2 in
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no) ;;
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?*)
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case "[$]$1" in
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'') $1=$2 ;;
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*) $1=[$]$1' '$2 ;;
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esac ;;
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esac])
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dnl Internal subroutine of AC_SYS_EXTRA_LARGEFILE.
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dnl AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(C-MACRO, CACHE-VAR, COMMENT, CODE-TO-SET-DEFAULT)
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AC_DEFUN([AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE],
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[AC_CACHE_CHECK([for $1], $2,
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[$2=no
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changequote(, )dnl
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$4
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for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do
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case "$ac_flag" in
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-D$1)
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$2=1 ;;
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-D$1=*)
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$2=`expr " $ac_flag" : '[^=]*=\(.*\)'` ;;
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esac
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done
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changequote([, ])dnl
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])
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if test "[$]$2" != no; then
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AC_DEFINE_UNQUOTED([$1], [$]$2, [$3])
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fi])
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AC_DEFUN([AC_SYS_EXTRA_LARGEFILE],
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[AC_REQUIRE([AC_CANONICAL_HOST])
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AC_ARG_ENABLE(largefile,
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[ --disable-largefile omit support for large files])
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if test "$enable_largefile" != no; then
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AC_CHECK_TOOL(GETCONF, getconf)
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AC_SYS_EXTRA_LARGEFILE_FLAGS(CFLAGS)
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AC_SYS_EXTRA_LARGEFILE_FLAGS(LDFLAGS)
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AC_SYS_EXTRA_LARGEFILE_FLAGS(LIBS)
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for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do
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case "$ac_flag" in
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no) ;;
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-D_FILE_OFFSET_BITS=*) ;;
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-D_LARGEFILE_SOURCE | -D_LARGEFILE_SOURCE=*) ;;
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-D_LARGE_FILES | -D_LARGE_FILES=*) ;;
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-D?* | -I?*)
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AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(CPPFLAGS, "$ac_flag") ;;
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*)
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AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(CFLAGS, "$ac_flag") ;;
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esac
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done
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AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(LDFLAGS, "$ac_cv_sys_largefile_LDFLAGS")
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AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(LIBS, "$ac_cv_sys_largefile_LIBS")
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AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS,
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ac_cv_sys_file_offset_bits,
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[Number of bits in a file offset, on hosts where this is settable.])
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[case "$host_os" in
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# HP-UX 10.20 and later
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hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
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ac_cv_sys_file_offset_bits=64 ;;
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esac]
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AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE,
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ac_cv_sys_largefile_source,
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[Define to make fseeko etc. visible, on some hosts.],
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[case "$host_os" in
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# HP-UX 10.20 and later
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hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
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ac_cv_sys_largefile_source=1 ;;
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esac])
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AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(_LARGE_FILES,
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ac_cv_sys_large_files,
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[Define for large files, on AIX-style hosts.],
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[case "$host_os" in
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# AIX 4.2 and later
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aix4.[2-9]* | aix4.1[0-9]* | aix[5-9].* | aix[1-9][0-9]*)
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ac_cv_sys_large_files=1 ;;
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esac])
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fi
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])
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dnl @synopsis AC_C_FIND_ENDIAN
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dnl
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dnl Determine endian-ness of target processor.
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dnl @version 1.1 Mar 03 2002
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dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
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dnl
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dnl Majority written from scratch to replace the standard autoconf macro
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dnl AC_C_BIGENDIAN. Only part remaining from the original it the invocation
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dnl of the AC_TRY_RUN macro.
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dnl
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dnl Permission to use, copy, modify, distribute, and sell this file for any
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dnl purpose is hereby granted without fee, provided that the above copyright
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dnl and this permission notice appear in all copies. No representations are
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dnl made about the suitability of this software for any purpose. It is
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dnl provided "as is" without express or implied warranty.
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dnl Find endian-ness in the following way:
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dnl 1) Look in <endian.h>.
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dnl 2) If 1) fails, look in <sys/types.h> and <sys/param.h>.
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dnl 3) If 1) and 2) fails and not cross compiling run a test program.
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dnl 4) If 1) and 2) fails and cross compiling then guess based on target.
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AC_DEFUN([AC_C_FIND_ENDIAN],
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[AC_CACHE_CHECK(processor byte ordering,
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ac_cv_c_byte_order,
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# Initialize to unknown
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ac_cv_c_byte_order=unknown
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if test x$ac_cv_header_endian_h = xyes ; then
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# First try <endian.h> which should set BYTE_ORDER.
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[AC_TRY_LINK([
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#include <endian.h>
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#if BYTE_ORDER != LITTLE_ENDIAN
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not big endian
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#endif
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], return 0 ;,
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ac_cv_c_byte_order=little
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)]
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[AC_TRY_LINK([
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#include <endian.h>
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#if BYTE_ORDER != BIG_ENDIAN
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not big endian
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#endif
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], return 0 ;,
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ac_cv_c_byte_order=big
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)]
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fi
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if test $ac_cv_c_byte_order = unknown ; then
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[AC_TRY_LINK([
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#include <sys/types.h>
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#include <sys/param.h>
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#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
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bogus endian macros
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#endif
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], return 0 ;,
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[AC_TRY_LINK([
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#include <sys/types.h>
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#include <sys/param.h>
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#if BYTE_ORDER != LITTLE_ENDIAN
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not big endian
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#endif
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], return 0 ;,
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ac_cv_c_byte_order=little
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)]
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[AC_TRY_LINK([
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#include <sys/types.h>
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#include <sys/param.h>
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#if BYTE_ORDER != LITTLE_ENDIAN
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not big endian
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#endif
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], return 0 ;,
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ac_cv_c_byte_order=little
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)]
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)]
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fi
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if test $ac_cv_c_byte_order = unknown ; then
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if test $cross_compiling = yes ; then
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# This is the last resort. Try to guess the target processor endian-ness
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# by looking at the target CPU type.
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[
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case "$target_cpu" in
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alpha* | i?86* | mipsel* | ia64*)
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ac_cv_c_big_endian=0
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ac_cv_c_little_endian=1
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;;
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m68* | mips* | powerpc* | hppa* | sparc*)
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ac_cv_c_big_endian=1
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ac_cv_c_little_endian=0
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;;
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esac
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]
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else
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AC_TRY_RUN(
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[[
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int main (void)
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{ /* Are we little or big endian? From Harbison&Steele. */
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union
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{ long l ;
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char c [sizeof (long)] ;
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} u ;
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u.l = 1 ;
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return (u.c [sizeof (long) - 1] == 1);
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}
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]], , ac_cv_c_byte_order=big,
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ac_cv_c_byte_order=unknown
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)
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AC_TRY_RUN(
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[[int main (void)
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{ /* Are we little or big endian? From Harbison&Steele. */
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union
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{ long l ;
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char c [sizeof (long)] ;
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} u ;
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u.l = 1 ;
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return (u.c [0] == 1);
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}]], , ac_cv_c_byte_order=little,
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ac_cv_c_byte_order=unknown
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)
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fi
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fi
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)
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]
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if test $ac_cv_c_byte_order = big ; then
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ac_cv_c_big_endian=1
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ac_cv_c_little_endian=0
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elif test $ac_cv_c_byte_order = little ; then
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ac_cv_c_big_endian=0
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ac_cv_c_little_endian=1
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else
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ac_cv_c_big_endian=0
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ac_cv_c_little_endian=0
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fi
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)# AC_C_FIND_ENDIAN
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dnl @synopsis AC_C99_FLEXIBLE_ARRAY
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dnl
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dnl Dose the compiler support the 1999 ISO C Standard "stuct hack".
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dnl @version 1.1 Mar 15 2004
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dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
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dnl
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dnl Permission to use, copy, modify, distribute, and sell this file for any
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dnl purpose is hereby granted without fee, provided that the above copyright
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dnl and this permission notice appear in all copies. No representations are
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dnl made about the suitability of this software for any purpose. It is
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dnl provided "as is" without express or implied warranty.
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AC_DEFUN([AC_C99_FLEXIBLE_ARRAY],
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[AC_CACHE_CHECK(C99 struct flexible array support,
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ac_cv_c99_flexible_array,
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# Initialize to unknown
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ac_cv_c99_flexible_array=no
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AC_TRY_LINK([[
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#include <stdlib.h>
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typedef struct {
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int k;
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char buffer [] ;
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} MY_STRUCT ;
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]],
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[ MY_STRUCT *p = calloc (1, sizeof (MY_STRUCT) + 42); ],
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ac_cv_c99_flexible_array=yes,
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ac_cv_c99_flexible_array=no
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))]
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) # AC_C99_FLEXIBLE_ARRAY
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dnl @synopsis AC_C99_FUNC_LRINT
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dnl
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dnl Check whether C99's lrint function is available.
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dnl @version 1.3 Feb 12 2002
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dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
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dnl
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dnl Permission to use, copy, modify, distribute, and sell this file for any
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dnl purpose is hereby granted without fee, provided that the above copyright
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dnl and this permission notice appear in all copies. No representations are
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dnl made about the suitability of this software for any purpose. It is
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dnl provided "as is" without express or implied warranty.
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dnl
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AC_DEFUN([AC_C99_FUNC_LRINT],
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[AC_CACHE_CHECK(for lrint,
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ac_cv_c99_lrint,
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[
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lrint_save_CFLAGS=$CFLAGS
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CFLAGS="-lm"
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AC_TRY_LINK([
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#define _ISOC9X_SOURCE 1
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#define _ISOC99_SOURCE 1
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#define __USE_ISOC99 1
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#define __USE_ISOC9X 1
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#include <math.h>
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], if (!lrint(3.14159)) lrint(2.7183);, ac_cv_c99_lrint=yes, ac_cv_c99_lrint=no)
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CFLAGS=$lrint_save_CFLAGS
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])
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if test "$ac_cv_c99_lrint" = yes; then
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AC_DEFINE(HAVE_LRINT, 1,
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[Define if you have C99's lrint function.])
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fi
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])# AC_C99_FUNC_LRINT
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dnl @synopsis AC_C99_FUNC_LRINTF
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dnl
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dnl Check whether C99's lrintf function is available.
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dnl @version 1.3 Feb 12 2002
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dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
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dnl
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dnl Permission to use, copy, modify, distribute, and sell this file for any
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dnl purpose is hereby granted without fee, provided that the above copyright
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dnl and this permission notice appear in all copies. No representations are
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dnl made about the suitability of this software for any purpose. It is
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dnl provided "as is" without express or implied warranty.
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dnl
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AC_DEFUN([AC_C99_FUNC_LRINTF],
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[AC_CACHE_CHECK(for lrintf,
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ac_cv_c99_lrintf,
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[
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AC_TRY_LINK([
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#define _ISOC9X_SOURCE 1
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#define _ISOC99_SOURCE 1
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#define __USE_ISOC99 1
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#define __USE_ISOC9X 1
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#include <math.h>
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], if (!lrintf(3.14159)) lrintf(2.7183);, ac_cv_c99_lrintf=yes, ac_cv_c99_lrintf=no)
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])
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if test "$ac_cv_c99_lrintf" = yes; then
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AC_DEFINE(HAVE_LRINTF, 1,
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[Define if you have C99's lrintf function.])
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fi
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])# AC_C99_FUNC_LRINTF
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dnl @synopsis AC_C99_FUNC_LLRINT
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dnl
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dnl Check whether C99's llrint function is available.
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dnl @version 1.1 Sep 30 2002
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dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
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dnl
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dnl Permission to use, copy, modify, distribute, and sell this file for any
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dnl purpose is hereby granted without fee, provided that the above copyright
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dnl and this permission notice appear in all copies. No representations are
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dnl made about the suitability of this software for any purpose. It is
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dnl provided "as is" without express or implied warranty.
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dnl
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AC_DEFUN([AC_C99_FUNC_LLRINT],
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[AC_CACHE_CHECK(for llrint,
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ac_cv_c99_llrint,
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[
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AC_TRY_LINK([
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#define _ISOC9X_SOURCE 1
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#define _ISOC99_SOURCE 1
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#define __USE_ISOC99 1
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#define __USE_ISOC9X 1
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#include <math.h>
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#include <stdint.h>
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], int64_t x ; x = llrint(3.14159) ;, ac_cv_c99_llrint=yes, ac_cv_c99_llrint=no)
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])
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if test "$ac_cv_c99_llrint" = yes; then
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AC_DEFINE(HAVE_LLRINT, 1,
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[Define if you have C99's llrint function.])
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fi
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])# AC_C99_FUNC_LLRINT
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dnl @synopsis AC_C_CLIP_MODE
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dnl
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dnl Determine the clipping mode when converting float to int.
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dnl @version 1.0 May 17 2003
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dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com>
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dnl
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dnl Permission to use, copy, modify, distribute, and sell this file for any
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dnl purpose is hereby granted without fee, provided that the above copyright
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dnl and this permission notice appear in all copies. No representations are
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dnl made about the suitability of this software for any purpose. It is
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dnl provided "as is" without express or implied warranty.
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dnl Find the clipping mode in the following way:
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dnl 1) If we are not cross compiling test it.
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dnl 2) IF we are cross compiling, assume that clipping isn't done correctly.
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AC_DEFUN([AC_C_CLIP_MODE],
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[AC_CACHE_CHECK(processor clipping capabilities,
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ac_cv_c_clip_type,
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# Initialize to unknown
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ac_cv_c_clip_positive=unknown
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ac_cv_c_clip_negative=unknown
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if test $ac_cv_c_clip_positive = unknown ; then
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AC_TRY_RUN(
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[[
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#define _ISOC9X_SOURCE 1
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#define _ISOC99_SOURCE 1
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#define __USE_ISOC99 1
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#define __USE_ISOC9X 1
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#include <math.h>
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int main (void)
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{ double fval ;
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int k, ival ;
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fval = 1.0 * 0x7FFFFFFF ;
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for (k = 0 ; k < 100 ; k++)
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{ ival = (lrint (fval)) >> 24 ;
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if (ival != 127)
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return 1 ;
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fval *= 1.2499999 ;
|
|
} ;
|
|
|
|
return 0 ;
|
|
}
|
|
]],
|
|
ac_cv_c_clip_positive=yes,
|
|
ac_cv_c_clip_positive=no,
|
|
ac_cv_c_clip_positive=unknown
|
|
)
|
|
|
|
AC_TRY_RUN(
|
|
[[
|
|
#define _ISOC9X_SOURCE 1
|
|
#define _ISOC99_SOURCE 1
|
|
#define __USE_ISOC99 1
|
|
#define __USE_ISOC9X 1
|
|
#include <math.h>
|
|
int main (void)
|
|
{ double fval ;
|
|
int k, ival ;
|
|
|
|
fval = -8.0 * 0x10000000 ;
|
|
for (k = 0 ; k < 100 ; k++)
|
|
{ ival = (lrint (fval)) >> 24 ;
|
|
if (ival != -128)
|
|
return 1 ;
|
|
|
|
fval *= 1.2499999 ;
|
|
} ;
|
|
|
|
return 0 ;
|
|
}
|
|
]],
|
|
ac_cv_c_clip_negative=yes,
|
|
ac_cv_c_clip_negative=no,
|
|
ac_cv_c_clip_negative=unknown
|
|
)
|
|
fi
|
|
|
|
if test $ac_cv_c_clip_positive = yes ; then
|
|
ac_cv_c_clip_positive=1
|
|
else
|
|
ac_cv_c_clip_positive=0
|
|
fi
|
|
|
|
if test $ac_cv_c_clip_negative = yes ; then
|
|
ac_cv_c_clip_negative=1
|
|
else
|
|
ac_cv_c_clip_negative=0
|
|
fi
|
|
|
|
[[
|
|
case "$ac_cv_c_clip_positive$ac_cv_c_clip_negative" in
|
|
"00")
|
|
ac_cv_c_clip_type="none"
|
|
;;
|
|
"10")
|
|
ac_cv_c_clip_type="positive"
|
|
;;
|
|
"01")
|
|
ac_cv_c_clip_type="negative"
|
|
;;
|
|
"11")
|
|
ac_cv_c_clip_type="both"
|
|
;;
|
|
esac
|
|
]]
|
|
|
|
)
|
|
]
|
|
|
|
)# AC_C_CLIP_MODE
|
|
|
|
|
|
dnl @synopsis AC_ADD_CFLAGS
|
|
dnl
|
|
dnl Add the given option to CFLAGS, if it doesn't break the compiler
|
|
|
|
AC_DEFUN([AC_ADD_CFLAGS],
|
|
[AC_MSG_CHECKING([if $CC accepts $1])
|
|
ac_add_cflags__old_cflags="$CFLAGS"
|
|
CFLAGS="$CFLAGS $1"
|
|
AC_TRY_LINK([#include <stdio.h>],
|
|
[printf("Hello, World!\n"); return 0;],
|
|
AC_MSG_RESULT([yes]),
|
|
AC_MSG_RESULT([no])
|
|
CFLAGS="$ac_add_cflags__old_cflags")
|
|
])
|
|
|
|
|
|
|
|
dnl PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
|
|
dnl defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
|
|
dnl also defines GSTUFF_PKG_ERRORS on error
|
|
AC_DEFUN([PKG_CHECK_MODULES], [
|
|
succeeded=no
|
|
|
|
if test -z "$PKG_CONFIG"; then
|
|
AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
|
|
fi
|
|
|
|
if test "$PKG_CONFIG" = "no" ; then
|
|
echo "*** The pkg-config script could not be found. Make sure it is"
|
|
echo "*** in your path, or set the PKG_CONFIG environment variable"
|
|
echo "*** to the full path to pkg-config."
|
|
echo "*** Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config."
|
|
else
|
|
PKG_CONFIG_MIN_VERSION=0.9.0
|
|
if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
|
|
AC_MSG_CHECKING(for $2)
|
|
|
|
if $PKG_CONFIG --exists "$2" ; then
|
|
AC_MSG_RESULT(yes)
|
|
succeeded=yes
|
|
|
|
AC_MSG_CHECKING($1_CFLAGS)
|
|
$1_CFLAGS=`$PKG_CONFIG --cflags "$2"`
|
|
AC_MSG_RESULT($$1_CFLAGS)
|
|
|
|
AC_MSG_CHECKING($1_LIBS)
|
|
$1_LIBS=`$PKG_CONFIG --libs "$2"`
|
|
AC_MSG_RESULT($$1_LIBS)
|
|
else
|
|
$1_CFLAGS=""
|
|
$1_LIBS=""
|
|
## If we have a custom action on failure, don't print errors, but
|
|
## do set a variable so people can do so.
|
|
$1_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
|
|
ifelse([$4], ,echo $$1_PKG_ERRORS,)
|
|
fi
|
|
|
|
AC_SUBST($1_CFLAGS)
|
|
AC_SUBST($1_LIBS)
|
|
else
|
|
echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
|
|
echo "*** See http://www.freedesktop.org/software/pkgconfig"
|
|
fi
|
|
fi
|
|
|
|
if test $succeeded = yes; then
|
|
ifelse([$3], , :, [$3])
|
|
else
|
|
ifelse([$4], , AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.]), [$4])
|
|
fi
|
|
])
|
|
|
|
|
|
|
|
|
|
ifelse(dnl
|
|
|
|
Do not edit or modify anything in this comment block.
|
|
The arch-tag line is a file identity tag for the GNU Arch
|
|
revision control system.
|
|
|
|
arch-tag: bc38294d-bb5c-42ad-90b9-779def5eaab7
|
|
|
|
)dnl
|