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- From dec5f888a457e36d81065ebc69f7d8d966be527d Mon Sep 17 00:00:00 2001
- From: Daiki Ueno <dueno@redhat.com>
- Date: Thu, 31 May 2018 11:02:51 +0200
- Subject: [PATCH] build: Ease issetugid() check when cross-compiling
-
- When cross-compiling, the configure check for issetugid() aborts,
- because of the pessimistic default of AC_RUN_IFELSE. This patch
- provides the non-pessimistic default to AC_RUN_IFELSE and wrap the
- macro invocation with AC_CACHE_CHECK so that the user can override the
- check by setting ac_cv_issetugid_openbsd=yes, as suggested in:
- https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Runtime.html#Runtime
- ---
- configure.ac | 16 +++++++++-------
- 1 file changed, 9 insertions(+), 7 deletions(-)
-
- diff --git a/configure.ac b/configure.ac
- index e99a3c7..bd6ece0 100644
- --- a/configure.ac
- +++ b/configure.ac
- @@ -115,15 +115,17 @@ if test "$os_unix" = "yes"; then
-
- # Check if issetugid() is available and has compatible behavior with OpenBSD
- AC_CHECK_FUNCS([issetugid], [
- - AC_MSG_CHECKING([whether issetugid() can detect setuid/setgid])
- - issetugid_openbsd=no
- - AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]],
- - [[return issetugid ();]])],
- - [chmod 02777 ./conftest$EXEEXT; ./conftest$EXEEXT || issetugid_openbsd=yes])
- - if test "$issetugid_openbsd" = yes; then
- + AC_CACHE_CHECK([whether issetugid() can detect setuid/setgid],
- + [ac_cv_issetugid_openbsd],
- + [ac_cv_issetugid_openbsd=no
- + AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]],
- + [[return issetugid ();]])],
- + [chmod 02777 ./conftest$EXEEXT; ./conftest$EXEEXT || ac_cv_issetugid_openbsd=yes],
- + [ac_cv_issetugid_openbsd=no],
- + [ac_cv_issetugid_openbsd="guessing no"])])
- + if test "$ac_cv_issetugid_openbsd" = yes; then
- AC_DEFINE([HAVE_ISSETUGID_OPENBSD], [1], [Whether issetugid() has compatible behavior with OpenBSD])
- fi
- - AC_MSG_RESULT([$issetugid_openbsd])
- ])
-
- # Required functions
- --
- 2.17.1
-
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