mirror of
https://github.com/moparisthebest/curl
synced 2024-11-15 14:05:03 -05:00
93 lines
3.3 KiB
Plaintext
93 lines
3.3 KiB
Plaintext
#serial 19
|
|
|
|
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 For more details about this brain damage please see:
|
|
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_TEST_INCLUDES
|
|
AC_DEFUN(AC_SYS_LARGEFILE_TEST_INCLUDES,
|
|
[[#include <sys/types.h>
|
|
/* Check that off_t can represent 2**63 - 1 correctly.
|
|
We can't simply "#define LARGE_OFF_T 9223372036854775807",
|
|
since some C++ compilers masquerading as C compilers
|
|
incorrectly reject 9223372036854775807. */
|
|
# define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
|
|
int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
|
|
&& LARGE_OFF_T % 2147483647 == 1)
|
|
? 1 : -1];
|
|
]])
|
|
|
|
dnl Internal subroutine of AC_SYS_LARGEFILE.
|
|
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 value needed for large files], $3,
|
|
[$3=no
|
|
AC_TRY_COMPILE([$5],
|
|
[$6],
|
|
,
|
|
[AC_TRY_COMPILE([#define $1 $2]
|
|
[$5]
|
|
,
|
|
[$6],
|
|
[$3=$2])])])
|
|
if test "[$]$3" != no; then
|
|
AC_DEFINE_UNQUOTED([$1], [$]$3, [$4])
|
|
fi])
|
|
|
|
AC_DEFUN(AC_SYS_LARGEFILE,
|
|
[AC_REQUIRE([AC_PROG_CC])
|
|
AC_ARG_ENABLE(largefile,
|
|
[ --disable-largefile omit support for large files])
|
|
if test "$enable_largefile" != no; then
|
|
|
|
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.],
|
|
AC_SYS_LARGEFILE_TEST_INCLUDES)
|
|
AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1,
|
|
ac_cv_sys_large_files,
|
|
[Define for large files, on AIX-style hosts.],
|
|
AC_SYS_LARGEFILE_TEST_INCLUDES)
|
|
fi
|
|
])
|
|
|
|
AC_DEFUN(AC_FUNC_FSEEKO,
|
|
[AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1,
|
|
ac_cv_sys_largefile_source,
|
|
[Define to make fseeko visible on some hosts (e.g. glibc 2.2).],
|
|
[#include <stdio.h>], [return !fseeko;])
|
|
# We used to try defining _XOPEN_SOURCE=500 too, to work around a bug
|
|
# in glibc 2.1.3, but that breaks too many other things.
|
|
# If you want fseeko and ftello with glibc, upgrade to a fixed glibc.
|
|
|
|
AC_CACHE_CHECK([for fseeko], ac_cv_func_fseeko,
|
|
[ac_cv_func_fseeko=no
|
|
AC_TRY_LINK([#include <stdio.h>],
|
|
[return fseeko && fseeko (stdin, 0, 0);],
|
|
[ac_cv_func_fseeko=yes])])
|
|
if test $ac_cv_func_fseeko != no; then
|
|
AC_DEFINE(HAVE_FSEEKO, 1,
|
|
[Define if fseeko (and presumably ftello) exists and is declared.])
|
|
fi])
|