From 4b448b50955a50d3a3ba4239a6971d45d9d758e8 Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Fri, 16 Aug 2019 12:28:42 +0200
Subject: [PATCH] Use AC_LINK_IFELSE instead of _COMPILE_IFELSE for cpuid
 detection

This apparently works around a bug on OpenSuSE on ARM and PPC when
LTO is enabled.

Still, as documented, LTO shouldn't be used when compiling the library.
---
 configure    | 5 +++--
 configure.ac | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 6063204a..74f8eee7 100755
--- a/configure
+++ b/configure
@@ -18568,7 +18568,7 @@ __asm__ __volatile__ ("xchgl %%ebx, %k1; cpuid; xchgl %%ebx, %k1" :
   return 0;
 }
 _ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
+if ac_fn_c_try_link "$LINENO"; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -18579,7 +18579,8 @@ else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
 
 fi
 
diff --git a/configure.ac b/configure.ac
index 9e2de27c..7469d1b8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -694,7 +694,7 @@ AC_SUBST(HAVE_TI_MODE_V)
 HAVE_CPUID_V=0
 AS_IF([test "$enable_asm" != "no"],[
   AC_MSG_CHECKING(for cpuid instruction)
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]], [[
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[ ]], [[
 unsigned int cpu_info[4];
 __asm__ __volatile__ ("xchgl %%ebx, %k1; cpuid; xchgl %%ebx, %k1" :
                       "=a" (cpu_info[0]), "=&r" (cpu_info[1]),