ac_cv_build_system_type="$build"
ac_cv_target_system_type="$target"
])
+
+#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 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>
+ int a[(off_t) 9223372036854775807 == 9223372036854775807 ? 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(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, [$4])
+ fi])
+
+AC_DEFUN([AC_SYS_LARGEFILE],
+ [AC_ARG_ENABLE(largefile,
+ [ --disable-largefile omit support for large files])
+ if test "$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$ac_cv_sys_largefile_CC"
+ fi
+
+ AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64,
+ ac_cv_sys_file_offset_bits,
+ [Number of bits in a file offset, on hosts where this is settable.])
+ AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1,
+ ac_cv_sys_largefile_source,
+ [Define to make ftello visible on some hosts (e.g. HP-UX 10.20).],
+ [#include <stdio.h>], [return !ftello;])
+ AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1,
+ ac_cv_sys_large_files,
+ [Define for large files, on AIX-style hosts.])
+ AC_SYS_LARGEFILE_MACRO_VALUE(_XOPEN_SOURCE, 500,
+ ac_cv_sys_xopen_source,
+ [Define to make ftello visible on some hosts (e.g. glibc 2.1.3).],
+ [#include <stdio.h>], [return !ftello;])
+ fi
+ ])
+
+dnl Check for socklen_t: historically on BSD it is an int, and in
+dnl POSIX 1g it is a type of its own, but some platforms use different
+dnl types for the argument to getsockopt, getpeername, etc. So we
+dnl have to test to find something that will work.
+
+dnl This is no good, because passing the wrong pointer on C compilers is
+dnl likely to only generate a warning, not an error. We don't call this at
+dnl the moment.
+
+AC_DEFUN([TYPE_SOCKLEN_T],
+[
+ AC_MSG_CHECKING([for socklen_t])
+ AC_CACHE_VAL([lftp_cv_socklen_t],
+ [
+ lftp_cv_socklen_t=no
+ AC_TRY_COMPILE([
+ #include <sys/types.h>
+ #include <sys/socket.h>
+ ],
+ [
+ socklen_t len;
+ getpeername(0,0,&len);
+ ],
+ [
+ lftp_cv_socklen_t=yes
+ ])
+ ])
+ AC_MSG_RESULT($lftp_cv_socklen_t)
+ if test $lftp_cv_socklen_t = no; then
+ AC_MSG_CHECKING([for socklen_t equivalent])
+ AC_CACHE_VAL([lftp_cv_socklen_t_equiv],
+ [
+ lftp_cv_socklen_t_equiv=int
+ AC_LANG_SAVE
+ for t in int size_t unsigned long "unsigned long"; do
+ AC_TRY_COMPILE([
+ #include <sys/types.h>
+ #include <sys/socket.h>
+ ],
+ [
+ $t len;
+ getpeername(0,0,&len);
+ ],
+ [
+ lftp_cv_socklen_t_equiv="$t"
+ break
+ ],
+ [
+ AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
+ ])
+ done
+ ])
+ AC_MSG_RESULT($lftp_cv_socklen_t_equiv)
+ AC_DEFINE_UNQUOTED(socklen_t, $lftp_cv_socklen_t_equiv,
+ [type to use in place of socklen_t if not defined])
+ fi
+])
+
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff