X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/3fa64fd0080caf4b44ac069f3b6172b68f274e6f..bd685982389b78a158921b7839bdeca501338d19:/aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index d583b52f..d489b203 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -22,77 +22,71 @@ AC_DEFUN(AC_VALIDATE_CACHE_SYSTEM_TYPE, [
     ac_cv_target_system_type="$target"
 ])
 
-#serial 12
+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 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 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.
 
-dnl Written by Paul Eggert <eggert@twinsun.com>.
+AC_DEFUN([TYPE_SOCKLEN_T],
+[
+   AC_CHECK_TYPE([socklen_t], ,[
+      AC_MSG_CHECKING([for socklen_t equivalent])
+      AC_CACHE_VAL([rsync_cv_socklen_t_equiv],
+      [
+         # Systems have either "struct sockaddr *" or
+         # "void *" as the second argument to getpeername
+         rsync_cv_socklen_t_equiv=
+         for arg2 in "struct sockaddr" void; do
+            for t in int size_t unsigned long "unsigned long"; do
+               AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <sys/socket.h>
 
-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];
-  ]])
+                  int getpeername (int, $arg2 *, $t *);
+               ],[
+                  $t len;
+                  getpeername(0,0,&len);
+               ],[
+                  rsync_cv_socklen_t_equiv="$t"
+                  break
+               ])
+            done
+         done
 
-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$ac_cv_sys_largefile_CC"
-     fi
+         if test "x$rsync_cv_socklen_t_equiv" = x; then
+            AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
+         fi
+      ])
+      AC_MSG_RESULT($rsync_cv_socklen_t_equiv)
+      AC_DEFINE_UNQUOTED(socklen_t, $rsync_cv_socklen_t_equiv,
+			[type to use in place of socklen_t if not defined])],
+      [#include <sys/types.h>
+#include <sys/socket.h>])
+])
 
-     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 AC_HAVE_TYPE(TYPE,INCLUDES)
+AC_DEFUN([AC_HAVE_TYPE], [
+AC_REQUIRE([AC_HEADER_STDC])
+cv=`echo "$1" | sed 'y%./+- %__p__%'`
+AC_MSG_CHECKING(for $1)
+AC_CACHE_VAL([ac_cv_type_$cv],
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_INCLUDES_DEFAULT
+$2]],
+[[$1 foo;]])],
+[eval "ac_cv_type_$cv=yes"],
+[eval "ac_cv_type_$cv=no"]))dnl
+ac_foo=`eval echo \\$ac_cv_type_$cv`
+AC_MSG_RESULT($ac_foo)
+if test "$ac_foo" = yes; then
+  ac_tr_hdr=HAVE_`echo $1 | sed 'y%abcdefghijklmnopqrstuvwxyz./- %ABCDEFGHIJKLMNOPQRSTUVWXYZ____%'`
+if false; then
+	AC_CHECK_TYPES($1)
+fi
+  AC_DEFINE_UNQUOTED($ac_tr_hdr, 1, [Define if you have type `$1'])
+fi
+])