Add -fno-strict-aliasing workaround for Linux GCC targets
Most Linux distros work around aliasing problems in Mesa by compiling
with the GCC option -fno-strict-aliasing. Two examples:
https://bugs.freedesktop.org/show_bug.cgi?id=6046
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=394311
This makes -fno-strict-aliasing the default with a comment that
developers should consider commenting it out. There is a already a note
about these bugs in docs/helpwanted.html.
diff --git a/configs/linux-alpha b/configs/linux-alpha
index d69aabb..65bf0c2 100644
--- a/configs/linux-alpha
+++ b/configs/linux-alpha
@@ -11,6 +11,10 @@
CXXFLAGS = -O3 -mcpu=ev5 -ansi -mieee -pedantic -fPIC -D_XOPEN_SOURCE
GLUT_CFLAGS = -fexceptions
+# Work around aliasing bugs - developers should comment this out
+CFLAGS += -fno-strict-aliasing
+CXXFLAGS += -fno-strict-aliasing
+
GL_LIB_DEPS = -L/usr/X11R6/lib -lX11 -lXext -lm -lpthread
GLUT_LIB_DEPS = -L$(TOP)/$(LIB_DIR) -l$(GLU_LIB) -l$(GL_LIB) -L/usr/X11R6/lib -lX11 -lXmu -lXt -lXi -lm
GLW_LIB_DEPS = -L$(TOP)/$(LIB_DIR) -l$(GL_LIB) -L/usr/X11R6/lib -lXt -lX11