-#serial 5
+#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.
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,
- [ac_cv_sys_largefile_$1=`($GETCONF LFS_$1) 2>/dev/null` || {
- ac_cv_sys_largefile_$1=no
- ifelse($1, CFLAGS,
- [case "$host_os" in
- # IRIX 6.2 and later require cc -n32.
-changequote(, )dnl
- irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*)
-changequote([, ])dnl
- if test "$GCC" != yes; then
- ac_cv_sys_largefile_CFLAGS=-n32
- fi
- ac_save_CC="$CC"
- CC="$CC $ac_cv_sys_largefile_CFLAGS"
- AC_TRY_LINK(, , , ac_cv_sys_largefile_CFLAGS=no)
- CC="$ac_save_CC"
- esac])
- }])])
+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
-changequote(, )dnl
- $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
-changequote([, ])dnl
- ])
- 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 fseeko etc. visible, on some hosts.],
- [case "$host_os" in
- # HP-UX 10.20 and later
- hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
- ac_cv_sys_largefile_source=1 ;;
- esac])
- AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES,
+ [Define to make ftello visible on some hosts (e.g. HP-UX 10.20).],
+ [#include <stdio.h>], [return !ftello;])
+ AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1,
ac_cv_sys_large_files,
- [Define for large files, on AIX-style hosts.],
- [case "$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])
+ [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).],
+ [#include <stdio.h>], [return !ftello;])
fi
])
projects / gnulib.git / blobdiff