X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/8de330a38717f8f808e8aa88a5f4391c310e7fd6..fab9a9c54729984199d20b637ea8cc163c73d2e2:/aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index cf5e9363..a1256ae8 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -21,3 +21,137 @@ AC_DEFUN(AC_VALIDATE_CACHE_SYSTEM_TYPE, [
     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
+])
+