Mesa (9.1): builtin_compiler/build: Don' t use *_FOR_BUILD when not cross compiling

[Michel Dänzer]

Module: Mesa
Branch: 9.1
Commit: 2a7affc1d50d06b436520809254f2c5bc7fbe7c7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2a7affc1d50d06b436520809254f2c5bc7fbe7c7

Author: Matt Turner <mattst88 at gmail.com>
Date:   Wed Jan 30 11:50:55 2013 -0800

builtin_compiler/build: Don't use *_FOR_BUILD when not cross compiling

Previously we were relying on CFLAGS_FOR_BUILD to be the same as CFLAGS
when not cross compiling, but this assumption didn't take into
consideration 32-bit builds on 64-bit systems. More generally, not
honoring CFLAGS is bad.

Automake is evidently too stupid to accept

if CROSS_COMPILING
CC = @CC_FOR_BUILD@
...
else
CC = @CC@
endif

without warning that CC has been already defined. The warnings are
harmless, but I'd prefer to avoid future reports about them, so define
proxy variables, which are assigned inside the conditional and then
unconditionally assigned to CC et al.

NOTE: This is a candidate for the 9.1 branch.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=59737
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=60038
(cherry picked from commit 2db1f73849260cf8e5a7e390d04f5f26141a0b37)

---

 src/glsl/builtin_compiler/Makefile.am |   43 ++++++++++++++++++++++++--------
 1 files changed, 32 insertions(+), 11 deletions(-)

diff --git a/src/glsl/builtin_compiler/Makefile.am b/src/glsl/builtin_compiler/Makefile.am
index 9766408..e11a17f 100644
--- a/src/glsl/builtin_compiler/Makefile.am
+++ b/src/glsl/builtin_compiler/Makefile.am
@@ -20,23 +20,44 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 # IN THE SOFTWARE.
 
-CC = @CC_FOR_BUILD@
-CFLAGS = @CFLAGS_FOR_BUILD@
-CPP = @CPP_FOR_BUILD@
-CPPFLAGS = @CPPFLAGS_FOR_BUILD@
-CXX = @CXX_FOR_BUILD@
-CXXFLAGS = @CXXFLAGS_FOR_BUILD@
-LD = @LD_FOR_BUILD@
-LDFLAGS = @LDFLAGS_FOR_BUILD@
-
 AM_CFLAGS = \
 	-I $(top_srcdir)/include \
 	-I $(top_srcdir)/src/mapi \
 	-I $(top_srcdir)/src/mesa \
 	-I $(GLSL_SRCDIR) \
 	-I $(GLSL_SRCDIR)/glcpp \
-	-I $(GLSL_BUILDDIR) \
-	$(DEFINES_FOR_BUILD)
+	-I $(GLSL_BUILDDIR)
+
+if CROSS_COMPILING
+proxyCC = @CC_FOR_BUILD@
+proxyCFLAGS = @CFLAGS_FOR_BUILD@
+proxyCPP = @CPP_FOR_BUILD@
+proxyCPPFLAGS = @CPPFLAGS_FOR_BUILD@
+proxyCXX = @CXX_FOR_BUILD@
+proxyCXXFLAGS = @CXXFLAGS_FOR_BUILD@
+proxyLD = @LD_FOR_BUILD@
+proxyLDFLAGS = @LDFLAGS_FOR_BUILD@
+AM_CFLAGS += $(DEFINES_FOR_BUILD)
+else
+proxyCC = @CC@
+proxyCFLAGS = @CFLAGS@
+proxyCPP = @CPP@
+proxyCPPFLAGS = @CPPFLAGS@
+proxyCXX = @CXX@
+proxyCXXFLAGS = @CXXFLAGS@
+proxyLD = @LD@
+proxyLDFLAGS = @LDFLAGS@
+AM_CFLAGS += $(DEFINES)
+endif
+
+CC = $(proxyCC)
+CFLAGS = $(proxyCFLAGS)
+CPP = $(proxyCPP)
+CPPFLAGS = $(proxyCPPFLAGS)
+CXX = $(proxyCXX)
+CXXFLAGS = $(proxyCXXFLAGS)
+LD = $(proxyLD)
+LDFLAGS = $(proxyLDFLAGS)
 
 AM_CXXFLAGS = $(AM_CFLAGS)