From: Bruno Haible <bruno@clisp.org>
Date: Sun, 13 Aug 2023 23:45:39 +0000 (+0200)
Subject: build: fix link errors with gcc < 4.8
X-Git-Tag: v9.4~31
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=049e5b0f8768df2c280ae258d6e6221d8ab7fe46;p=thirdparty%2Fcoreutils.git

build: fix link errors with gcc < 4.8

* configure.ac: Attempt to link, not only compile, the test programs
with __builtin_cpu_supports, to avoid link errors with cksum and wc.
---

diff --git a/configure.ac b/configure.ac
index afc1098f76..948fb3653e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -521,7 +521,7 @@ ac_c_werror_flag=$cu_save_c_werror_flag
 ac_save_CFLAGS=$CFLAGS
 CFLAGS="-mavx -mpclmul $CFLAGS"
 AC_MSG_CHECKING([if pclmul intrinsic exists])
-AC_COMPILE_IFELSE(
+AC_LINK_IFELSE(
   [AC_LANG_SOURCE([[
     #include <x86intrin.h>
 
@@ -550,7 +550,7 @@ CFLAGS=$ac_save_CFLAGS
 
 CFLAGS="-mavx2 $CFLAGS"
 AC_MSG_CHECKING([if avx2 intrinstics exists])
-AC_COMPILE_IFELSE(
+AC_LINK_IFELSE(
   [AC_LANG_SOURCE([[
     #include <x86intrin.h>