From 39bc5376a7a29a1fab35e72aae3eb1a4676d80a6 Mon Sep 17 00:00:00 2001
From: Ruben Kerkhof <ruben@rubenkerkhof.com>
Date: Sat, 27 May 2017 15:05:45 +0200
Subject: [PATCH] configure.ac: use preprocessor to detect libpqos version

No need to run the program.
---
 configure.ac | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/configure.ac b/configure.ac
index 11fb9ab3..5ed0ab3f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4428,14 +4428,14 @@ fi
 if test "x$with_libpqos" = "xyes"; then
   SAVE_CPPFLAGS="$CPPFLAGS"
   CPPFLAGS="$CPPFLAGS $with_libpqos_cppflags"
-  AC_RUN_IFELSE(
+  AC_PREPROC_IFELSE(
     [
-      AC_LANG_PROGRAM(
+      AC_LANG_SOURCE(
         [[
           #include <pqos.h>
-        ]],
-        [[
-          return !(PQOS_VERSION >= 106)
+          #if PQOS_VERSION < 106
+          #error "required PQOS version >= 1.06"
+          #endif
         ]]
       )
     ],
-- 
2.11.0