disable additional rules to regen sources when python is not found

After a cvs import timestamps change which triggers rules that attempt
to call python to regenerate files.  When python is not found this
generates empty files that override those from the distfile, breaking
the build.

When building inside xenocara python is never found as the pkg paths
are not searched.

2 files changed, 84 insertions, 82 deletions

diff --git a/lib/mesa/src/gallium/drivers/swr/Makefile.am b/lib/mesa/src/gallium/drivers/swr/Makefile.am
index dd1c2e6a7..6a2a35c63 100644
--- a/lib/mesa/src/gallium/drivers/swr/Makefile.am
+++ b/lib/mesa/src/gallium/drivers/swr/Makefile.am
@@ -63,6 +63,7 @@ BUILT_SOURCES = \
 	rasterizer/archrast/gen_ar_eventhandler.h \
 	rasterizer/archrast/gen_ar_eventhandlerfile.h
 
+if REGEN_SOURCES
 MKDIR_GEN = $(AM_V_at)$(MKDIR_P) $(@D)
 PYTHON_GEN = $(AM_V_GEN)$(PYTHON2) $(PYTHON_FLAGS)
 swr_context_llvm.h: rasterizer/jitter/scripts/gen_llvm_types.py swr_context.h
@@ -145,6 +146,7 @@ rasterizer/archrast/gen_ar_eventhandlerfile.h: rasterizer/scripts/gen_archrast.p
 		--proto $(srcdir)/rasterizer/archrast/events.proto \
 		--output rasterizer/archrast/gen_ar_eventhandlerfile.h \
 		--gen_eventhandlerfile_h
+endif
 
 COMMON_LIBADD = \
 	$(top_builddir)/src/gallium/auxiliary/libgallium.la \
diff --git a/lib/mesa/src/gallium/drivers/swr/Makefile.in b/lib/mesa/src/gallium/drivers/swr/Makefile.in
index 0b9dfd1f9..bcf339000 100644
--- a/lib/mesa/src/gallium/drivers/swr/Makefile.in
+++ b/lib/mesa/src/gallium/drivers/swr/Makefile.in
@@ -864,8 +864,8 @@ BUILT_SOURCES = \
 	rasterizer/archrast/gen_ar_eventhandler.h \
 	rasterizer/archrast/gen_ar_eventhandlerfile.h
 
-MKDIR_GEN = $(AM_V_at)$(MKDIR_P) $(@D)
-PYTHON_GEN = $(AM_V_GEN)$(PYTHON2) $(PYTHON_FLAGS)
+@REGEN_SOURCES_TRUE@MKDIR_GEN = $(AM_V_at)$(MKDIR_P) $(@D)
+@REGEN_SOURCES_TRUE@PYTHON_GEN = $(AM_V_GEN)$(PYTHON2) $(PYTHON_FLAGS)
 COMMON_LIBADD = \
 	$(top_builddir)/src/gallium/auxiliary/libgallium.la \
 	$(top_builddir)/src/mesa/libmesagallium.la \
@@ -2375,86 +2375,86 @@ uninstall-am: uninstall-libLTLIBRARIES
 	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
 	tags uninstall uninstall-am uninstall-libLTLIBRARIES
 
-swr_context_llvm.h: rasterizer/jitter/scripts/gen_llvm_types.py swr_context.h
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_types.py \
-		--input $(srcdir)/swr_context.h \
-		--output swr_context_llvm.h
-
-rasterizer/scripts/gen_knobs.cpp rasterizer/scripts/gen_knobs.h: rasterizer/scripts/gen_knobs.py rasterizer/scripts/knob_defs.py rasterizer/scripts/templates/knobs.template
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/scripts/gen_knobs.py \
-		rasterizer/scripts
-
-rasterizer/jitter/state_llvm.h: rasterizer/jitter/scripts/gen_llvm_types.py rasterizer/core/state.h
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_types.py \
-		--input $(srcdir)/rasterizer/core/state.h \
-		--output rasterizer/jitter/state_llvm.h
-
-rasterizer/jitter/builder_gen.h: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
-		--input $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h \
-		--output rasterizer/jitter/builder_gen.h \
-		--gen_h
-
-rasterizer/jitter/builder_gen.cpp: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
-		--input $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h \
-		--output rasterizer/jitter/builder_gen.cpp \
-		--gen_cpp
-
-rasterizer/jitter/builder_x86.h: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
-		--output rasterizer/jitter/builder_x86.h \
-		--gen_x86_h
-
-rasterizer/jitter/builder_x86.cpp: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
-		--output rasterizer/jitter/builder_x86.cpp \
-		--gen_x86_cpp
-
-rasterizer/archrast/gen_ar_event.h: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_event_h.template rasterizer/archrast/events.proto
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/scripts/gen_archrast.py \
-		--proto $(srcdir)/rasterizer/archrast/events.proto \
-		--output rasterizer/archrast/gen_ar_event.h \
-		--gen_event_h
-
-rasterizer/archrast/gen_ar_event.cpp: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_event_cpp.template rasterizer/archrast/events.proto
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/scripts/gen_archrast.py \
-		--proto $(srcdir)/rasterizer/archrast/events.proto \
-		--output rasterizer/archrast/gen_ar_event.cpp \
-		--gen_event_cpp
-
-rasterizer/archrast/gen_ar_eventhandler.h: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_eventhandler_h.template rasterizer/archrast/events.proto
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/scripts/gen_archrast.py \
-		--proto $(srcdir)/rasterizer/archrast/events.proto \
-		--output rasterizer/archrast/gen_ar_eventhandler.h \
-		--gen_eventhandler_h
-
-rasterizer/archrast/gen_ar_eventhandlerfile.h: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_eventhandlerfile_h.template rasterizer/archrast/events.proto
-	$(MKDIR_GEN)
-	$(PYTHON_GEN) \
-		$(srcdir)/rasterizer/scripts/gen_archrast.py \
-		--proto $(srcdir)/rasterizer/archrast/events.proto \
-		--output rasterizer/archrast/gen_ar_eventhandlerfile.h \
-		--gen_eventhandlerfile_h
+@REGEN_SOURCES_TRUE@swr_context_llvm.h: rasterizer/jitter/scripts/gen_llvm_types.py swr_context.h
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_types.py \
+@REGEN_SOURCES_TRUE@		--input $(srcdir)/swr_context.h \
+@REGEN_SOURCES_TRUE@		--output swr_context_llvm.h
+
+@REGEN_SOURCES_TRUE@rasterizer/scripts/gen_knobs.cpp rasterizer/scripts/gen_knobs.h: rasterizer/scripts/gen_knobs.py rasterizer/scripts/knob_defs.py rasterizer/scripts/templates/knobs.template
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/scripts/gen_knobs.py \
+@REGEN_SOURCES_TRUE@		rasterizer/scripts
+
+@REGEN_SOURCES_TRUE@rasterizer/jitter/state_llvm.h: rasterizer/jitter/scripts/gen_llvm_types.py rasterizer/core/state.h
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_types.py \
+@REGEN_SOURCES_TRUE@		--input $(srcdir)/rasterizer/core/state.h \
+@REGEN_SOURCES_TRUE@		--output rasterizer/jitter/state_llvm.h
+
+@REGEN_SOURCES_TRUE@rasterizer/jitter/builder_gen.h: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
+@REGEN_SOURCES_TRUE@		--input $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h \
+@REGEN_SOURCES_TRUE@		--output rasterizer/jitter/builder_gen.h \
+@REGEN_SOURCES_TRUE@		--gen_h
+
+@REGEN_SOURCES_TRUE@rasterizer/jitter/builder_gen.cpp: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
+@REGEN_SOURCES_TRUE@		--input $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h \
+@REGEN_SOURCES_TRUE@		--output rasterizer/jitter/builder_gen.cpp \
+@REGEN_SOURCES_TRUE@		--gen_cpp
+
+@REGEN_SOURCES_TRUE@rasterizer/jitter/builder_x86.h: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
+@REGEN_SOURCES_TRUE@		--output rasterizer/jitter/builder_x86.h \
+@REGEN_SOURCES_TRUE@		--gen_x86_h
+
+@REGEN_SOURCES_TRUE@rasterizer/jitter/builder_x86.cpp: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
+@REGEN_SOURCES_TRUE@		--output rasterizer/jitter/builder_x86.cpp \
+@REGEN_SOURCES_TRUE@		--gen_x86_cpp
+
+@REGEN_SOURCES_TRUE@rasterizer/archrast/gen_ar_event.h: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_event_h.template rasterizer/archrast/events.proto
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/scripts/gen_archrast.py \
+@REGEN_SOURCES_TRUE@		--proto $(srcdir)/rasterizer/archrast/events.proto \
+@REGEN_SOURCES_TRUE@		--output rasterizer/archrast/gen_ar_event.h \
+@REGEN_SOURCES_TRUE@		--gen_event_h
+
+@REGEN_SOURCES_TRUE@rasterizer/archrast/gen_ar_event.cpp: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_event_cpp.template rasterizer/archrast/events.proto
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/scripts/gen_archrast.py \
+@REGEN_SOURCES_TRUE@		--proto $(srcdir)/rasterizer/archrast/events.proto \
+@REGEN_SOURCES_TRUE@		--output rasterizer/archrast/gen_ar_event.cpp \
+@REGEN_SOURCES_TRUE@		--gen_event_cpp
+
+@REGEN_SOURCES_TRUE@rasterizer/archrast/gen_ar_eventhandler.h: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_eventhandler_h.template rasterizer/archrast/events.proto
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/scripts/gen_archrast.py \
+@REGEN_SOURCES_TRUE@		--proto $(srcdir)/rasterizer/archrast/events.proto \
+@REGEN_SOURCES_TRUE@		--output rasterizer/archrast/gen_ar_eventhandler.h \
+@REGEN_SOURCES_TRUE@		--gen_eventhandler_h
+
+@REGEN_SOURCES_TRUE@rasterizer/archrast/gen_ar_eventhandlerfile.h: rasterizer/scripts/gen_archrast.py rasterizer/scripts/templates/ar_eventhandlerfile_h.template rasterizer/archrast/events.proto
+@REGEN_SOURCES_TRUE@	$(MKDIR_GEN)
+@REGEN_SOURCES_TRUE@	$(PYTHON_GEN) \
+@REGEN_SOURCES_TRUE@		$(srcdir)/rasterizer/scripts/gen_archrast.py \
+@REGEN_SOURCES_TRUE@		--proto $(srcdir)/rasterizer/archrast/events.proto \
+@REGEN_SOURCES_TRUE@		--output rasterizer/archrast/gen_ar_eventhandlerfile.h \
+@REGEN_SOURCES_TRUE@		--gen_eventhandlerfile_h
 
 # XXX: As we cannot use BUILT_SOURCES (the files will end up in the dist
 # tarball) just annotate the dependency directly.