| From 2cb54158b80cdbd97ca3b36df83f9255e923ae3f Mon Sep 17 00:00:00 2001 |
| From: James Le Cuirot <chewi@aura-online.co.uk> |
| Date: Sat, 23 Aug 2014 09:46:39 +0100 |
| Subject: [PATCH] Check size of uid_t and gid_t using AC_CHECK_SIZEOF |
| |
| This built-in check is simpler than the previous method and, most |
| importantly, works when cross-compiling. |
| |
| Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com> |
| --- |
| configure.in | 14 ++++---------- |
| 1 file changed, 4 insertions(+), 10 deletions(-) |
| |
| diff --git a/configure.in b/configure.in |
| index 1a3f841..4a4d6d0 100644 |
| --- a/configure.in |
| +++ b/configure.in |
| @@ -335,16 +335,10 @@ if test "$enable_subids" != "no"; then |
| dnl |
| dnl FIXME: check if 32 bit UIDs/GIDs are supported by libc |
| dnl |
| - AC_RUN_IFELSE([AC_LANG_SOURCE([ |
| -#include <sys/types.h> |
| -int main(void) { |
| - uid_t u; |
| - gid_t g; |
| - return (sizeof u < 4) || (sizeof g < 4); |
| -} |
| - ])], [id32bit="yes"], [id32bit="no"]) |
| - |
| - if test "x$id32bit" = "xyes"; then |
| + AC_CHECK_SIZEOF([uid_t],, [#include "sys/types.h"]) |
| + AC_CHECK_SIZEOF([gid_t],, [#include "sys/types.h"]) |
| + |
| + if test "$ac_cv_sizeof_uid_t" -ge 4 && test "$ac_cv_sizeof_gid_t" -ge 4; then |
| AC_DEFINE(ENABLE_SUBIDS, 1, [Define to support the subordinate IDs.]) |
| enable_subids="yes" |
| else |
| -- |
| 2.3.6 |
| |
