From: Michael Wetherell <mike.wetherell@ntlworld.com>
Date: Sun, 12 Feb 2006 01:55:41 +0000 (+0000)
Subject: Add -fno-strict-aliasing to the optimisation flags for gcc as discussed on wx-dev
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/d6bf7254f410c6a138cd846f490fec1fa6389ae4?ds=inline

Add -fno-strict-aliasing to the optimisation flags for gcc as discussed on wx-dev


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37511 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/configure b/configure
index cf45e5214f..4b7e5c8a47 100755
--- a/configure
+++ b/configure
@@ -39394,7 +39394,7 @@ if test "$wxUSE_OPTIMISE" = "no" ; then
     fi
 else
     if test "$GCC" = yes ; then
-        OPTIMISE_CFLAGS="-O2"
+                                OPTIMISE_CFLAGS="-O2 -fno-strict-aliasing"
     else
         OPTIMISE_CFLAGS="-O"
     fi
diff --git a/configure.in b/configure.in
index 34f53337e8..cd9eb836ca 100644
--- a/configure.in
+++ b/configure.in
@@ -5147,7 +5147,10 @@ if test "$wxUSE_OPTIMISE" = "no" ; then
     fi
 else
     if test "$GCC" = yes ; then
-        OPTIMISE_CFLAGS="-O2"
+        dnl Switch on optimisation but keep strict-aliasing off for now (see
+        dnl -fstrict-aliasing in the gcc manual). When it is switched back on
+        dnl consider using -Wstrict-aliasing=2.
+        OPTIMISE_CFLAGS="-O2 -fno-strict-aliasing"
     else
         OPTIMISE_CFLAGS="-O"
     fi