From 43c8792b6e589be023ca8009df8b417e801a7ebf Mon Sep 17 00:00:00 2001
From: gbeauche <>
Date: Wed, 6 Jul 2005 05:25:05 +0000
Subject: [PATCH] Fix detection of GCC versions (J.P. Larocque)

---
 BasiliskII/src/Unix/configure.ac | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/BasiliskII/src/Unix/configure.ac b/BasiliskII/src/Unix/configure.ac
index 57be4622..c4d0d1cf 100644
--- a/BasiliskII/src/Unix/configure.ac
+++ b/BasiliskII/src/Unix/configure.ac
@@ -1113,20 +1113,22 @@ AC_MSG_RESULT($HAVE_GAS)
 dnl Check for GCC 2.7 or higher.
 HAVE_GCC27=no
 AC_MSG_CHECKING(for GCC 2.7 or higher)
-AC_EGREP_CPP(xyes,
-[#if __GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5
-  xyes
-#endif
-], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5)
+                                     # error gcc < 2.7
+                                     #endif
+                                   ]])],
+                  [AC_MSG_RESULT(yes); HAVE_GCC27=yes],
+                  [AC_MSG_RESULT(no)])
 
 dnl Check for GCC 3.0 or higher.
 HAVE_GCC30=no
 AC_MSG_CHECKING(for GCC 3.0 or higher)
-AC_EGREP_CPP(xyes,
-[#if __GNUC__ >= 3
-  xyes
-#endif
-], [AC_MSG_RESULT(yes); HAVE_GCC30=yes], AC_MSG_RESULT(no))
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#if ! (__GNUC__ >= 3)
+                                     # error gcc < 3
+                                     #endif
+                                   ]])],
+                  [AC_MSG_RESULT(yes); HAVE_GCC30=yes],
+                  [AC_MSG_RESULT(no)])
 
 dnl Check for ICC.
 AC_MSG_CHECKING(for ICC)