diff options
author | Jim Meyering <jim@meyering.net> | 2000-06-06 20:30:34 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 2000-06-06 20:30:34 +0000 |
commit | 179f99492ba76c81669aa5c8199f8c425133c594 (patch) | |
tree | 152fea388b69d5c55508110cd46a65a9ae21ca00 /m4 | |
parent | a605579011ed2d4a780f21aaeffa24bfe6e62485 (diff) | |
download | coreutils-179f99492ba76c81669aa5c8199f8c425133c594.tar.xz |
(AC_SYS_LARGEFILE_FLAGS,
AC_SYS_LARGEFILE_SPACE_APPEND): Remove.
(AC_SYS_LARGEFILE_TEST_INCLUDES): New macro.
(AC_SYS_LARGEFILE_MACRO_VALUE): Change arguments from
CODE-TO-SET-DEFAULT to VALUE, INCLUDES, FUNCTION-BODY.
All uses changed.
Instead of inspecting the output of getconf, try to compile the
test program without and with the macro definition.
(AC_SYS_LARGEFILE): Do not require AC_CANONICAL_HOST or check
for getconf. Instead, check for the needed flags by compiling
test programs.
Diffstat (limited to 'm4')
-rw-r--r-- | m4/largefile.m4 | 156 |
1 files changed, 48 insertions, 108 deletions
diff --git a/m4/largefile.m4 b/m4/largefile.m4 index bf3b9656a..60506df31 100644 --- a/m4/largefile.m4 +++ b/m4/largefile.m4 @@ -1,4 +1,4 @@ -#serial 11 +#serial 12 dnl By default, many hosts won't let programs access large files; dnl one must use special compiler options to get large-file access to work. @@ -8,127 +8,67 @@ dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html dnl Written by Paul Eggert <eggert@twinsun.com>. dnl Internal subroutine of AC_SYS_LARGEFILE. -dnl AC_SYS_LARGEFILE_FLAGS(FLAGSNAME) -AC_DEFUN(AC_SYS_LARGEFILE_FLAGS, - [AC_CACHE_CHECK([for $1 value to request large file support], - ac_cv_sys_largefile_$1, - [if ($GETCONF LFS_$1) >conftest.1 2>conftest.2 && test ! -s conftest.2 - then - ac_cv_sys_largefile_$1=`cat conftest.1` - else - ac_cv_sys_largefile_$1=no - ifelse($1, CFLAGS, - [case "$host_os" in - # HP-UX 10.20 requires -D__STDC_EXT__ with gcc 2.95.1. -[ hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)] - if test "$GCC" = yes; then - ac_cv_sys_largefile_CFLAGS=-D__STDC_EXT__ - fi - ;; - # IRIX 6.2 and later do not support large files by default, - # so use the -n32 ABI unless the installer said otherwise. -[ irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*)] - if test "$GCC" != yes; then - case "$CC $CFLAGS " in - *' -o32 '*|*' -n32 '*|*' -64 '*) ;; - *) ac_cv_sys_largefile_CFLAGS=-n32 ;; - esac - fi - esac - if test "$ac_cv_sys_largefile_CFLAGS" != no; then - ac_save_CC="$CC" - CC="$CC $ac_cv_sys_largefile_CFLAGS" - AC_TRY_LINK(, , , ac_cv_sys_largefile_CFLAGS=no) - CC="$ac_save_CC" - fi]) - fi - rm -f conftest*])]) +dnl AC_SYS_LARGEFILE_TEST_INCLUDES +AC_DEFUN(AC_SYS_LARGEFILE_TEST_INCLUDES, + [[#include <sys/types.h> + int a[(off_t) 9223372036854775807 == 9223372036854775807 ? 1 : -1]; + ]]) dnl Internal subroutine of AC_SYS_LARGEFILE. -dnl AC_SYS_LARGEFILE_SPACE_APPEND(VAR, VAL) -AC_DEFUN(AC_SYS_LARGEFILE_SPACE_APPEND, - [case $2 in - no) ;; - ?*) - case "[$]$1" in - '') $1=$2 ;; - *) $1=[$]$1' '$2 ;; - esac ;; - esac]) - -dnl Internal subroutine of AC_SYS_LARGEFILE. -dnl AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, CACHE-VAR, COMMENT, CODE-TO-SET-DEFAULT) +dnl AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, CACHE-VAR, COMMENT, INCLUDES, FUNCTION-BODY) AC_DEFUN(AC_SYS_LARGEFILE_MACRO_VALUE, - [AC_CACHE_CHECK([for $1], $2, - [$2=no - $4 - for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do - case "$ac_flag" in - -D$1) - $2=1 ;; - -D$1=*) - $2=`expr " $ac_flag" : '[[^=]]*=\(.*\)'` ;; - esac - done - ]) - if test "[$]$2" != no; then - AC_DEFINE_UNQUOTED([$1], [$]$2, [$3]) + [AC_CACHE_CHECK([for $1 value needed for large files], $3, + [$3=no + AC_TRY_COMPILE(AC_SYS_LARGEFILE_TEST_INCLUDES +$5 + , + [$6], + , + [AC_TRY_COMPILE([#define $1 $2] +AC_SYS_LARGEFILE_TEST_INCLUDES +$5 + , + [$6], + [$3=$2])])]) + if test "[$]$3" != no; then + AC_DEFINE_UNQUOTED([$1], [$]$3, [$4]) fi]) AC_DEFUN(AC_SYS_LARGEFILE, - [AC_REQUIRE([AC_CANONICAL_HOST]) - AC_ARG_ENABLE(largefile, + [AC_ARG_ENABLE(largefile, [ --disable-largefile omit support for large files]) if test "$enable_largefile" != no; then - AC_CHECK_TOOL(GETCONF, getconf) - AC_SYS_LARGEFILE_FLAGS(CFLAGS) - AC_SYS_LARGEFILE_FLAGS(LDFLAGS) - AC_SYS_LARGEFILE_FLAGS(LIBS) - for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do - case "$ac_flag" in - no) ;; - -D_FILE_OFFSET_BITS=*) ;; - -D_LARGEFILE_SOURCE | -D_LARGEFILE_SOURCE=*) ;; - -D_LARGE_FILES | -D_LARGE_FILES=*) ;; - -D?* | -I?*) - AC_SYS_LARGEFILE_SPACE_APPEND(CPPFLAGS, "$ac_flag") ;; - *) - AC_SYS_LARGEFILE_SPACE_APPEND(CFLAGS, "$ac_flag") ;; - esac - done - AC_SYS_LARGEFILE_SPACE_APPEND(LDFLAGS, "$ac_cv_sys_largefile_LDFLAGS") - AC_SYS_LARGEFILE_SPACE_APPEND(LIBS, "$ac_cv_sys_largefile_LIBS") - AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, + AC_CACHE_CHECK([for special C compiler options needed for large files], + ac_cv_sys_largefile_CC, + [ac_cv_sys_largefile_CC=no + if test "$GCC" != yes; then + # IRIX 6.2 and later do not support large files by default, + # so use the C compiler's -n32 option if that helps. + AC_TRY_COMPILE(AC_SYS_LARGEFILE_TEST_INCLUDES, , , + [ac_save_CC="$CC" + CC="$CC -n32" + AC_TRY_COMPILE(AC_SYS_LARGEFILE_TEST_INCLUDES, , + ac_cv_sys_largefile_CC=' -n32') + CC="$ac_save_CC"]) + fi]) + if test "$ac_cv_sys_largefile_CC" != no; then + CC="$CC$ac_cv_sys_largefile_CC" + fi + + AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, ac_cv_sys_file_offset_bits, - [Number of bits in a file offset, on hosts where this is settable.], - [case "$host_os" in - # HP-UX 10.20 and later -[ hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)] - ac_cv_sys_file_offset_bits=64 ;; - esac]) - AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, + [Number of bits in a file offset, on hosts where this is settable.]) + AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1, ac_cv_sys_largefile_source, [Define to make ftello visible on some hosts (e.g. HP-UX 10.20).], - [AC_TRY_COMPILE([#include <stdio.h>], [return !ftello;], , - [AC_TRY_COMPILE([#define _LARGEFILE_SOURCE 1 -#include <stdio.h>], [return !ftello;], - ac_cv_sys_largefile_source=1)])]) - AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, + [#include <stdio.h>], [return !ftello;]) + AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, ac_cv_sys_large_files, - [Define for large files, on AIX-style hosts.], - [case "$host_os" in - # AIX 4.2 and later -[ aix4.[2-9]* | aix4.1[0-9]* | aix[5-9].* | aix[1-9][0-9]*)] - ac_cv_sys_large_files=1 ;; - esac]) - AC_SYS_LARGEFILE_MACRO_VALUE(_XOPEN_SOURCE, + [Define for large files, on AIX-style hosts.]) + AC_SYS_LARGEFILE_MACRO_VALUE(_XOPEN_SOURCE, 500, ac_cv_sys_xopen_source, [Define to make ftello visible on some hosts (e.g. glibc 2.1.3).], - [AC_TRY_COMPILE([#include <stdio.h>], [return !ftello;], , - [AC_TRY_COMPILE([#define _XOPEN_SOURCE 500 -#include <stdio.h>], - [return !ftello;], - ac_cv_sys_xopen_source=500)])]) + [#include <stdio.h>], [return !ftello;]) fi ]) |