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Add -fno-strict-aliasing workaround for Linux GCC targets

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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.
This commit is contained in:
Dan Nicholson
2007-10-31 09:47:39 -07:00
parent 2bdd467dfd
commit 013dbcd611
15 changed files with 48 additions and 0 deletions
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configs/linux-alpha
+4
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@@ -11,6 +11,10 @@ CFLAGS = -O3 -mcpu=ev5 -ansi -mieee -pedantic -fPIC -D_XOPEN_SOURCE -DUSE_XSHM
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