configure/swr: configurable swr architectures

Allow configuration of the SWR architecture depend libraries
we build for with --with-swr-archs.  Maintains current behavior
by defaulting to avx,avx2.

Scons changes made to make it still build and work, but
without the changes for configuring which architectures.

v2:
 * add missing comma for swr_archs default
 * check that at least one architecture is enabled
 * modify loader logic to make it clearer how to add archs

Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 16 insertions, 1 deletions

diff --git a/src/gallium/drivers/swr/Makefile.am b/src/gallium/drivers/swr/Makefile.am
index 74612280fe7..f38ce7b1d97 100644
--- a/src/gallium/drivers/swr/Makefile.am
+++ b/src/gallium/drivers/swr/Makefile.am
@@ -55,6 +55,14 @@ libmesaswr_la_CXXFLAGS = \
 	$(SWR_AVX_CXXFLAGS) \
 	$(COMMON_CXXFLAGS)
 
+if HAVE_SWR_AVX
+libmesaswr_la_CXXFLAGS += -DHAVE_SWR_AVX
+endif
+
+if HAVE_SWR_AVX2
+libmesaswr_la_CXXFLAGS += -DHAVE_SWR_AVX2
+endif
+
 COMMON_SOURCES = \
 	$(ARCHRAST_CXX_SOURCES) \
 	$(COMMON_CXX_SOURCES) \
@@ -224,7 +232,10 @@ COMMON_LDFLAGS = \
 	$(GC_SECTIONS) \
 	$(NO_UNDEFINED)
 
-lib_LTLIBRARIES = libswrAVX.la libswrAVX2.la
+lib_LTLIBRARIES =
+
+if HAVE_SWR_AVX
+lib_LTLIBRARIES += libswrAVX.la
 
 libswrAVX_la_CXXFLAGS = \
 	$(SWR_AVX_CXXFLAGS) \
@@ -236,7 +247,10 @@ libswrAVX_la_SOURCES = \
 
 libswrAVX_la_LDFLAGS = \
 	$(COMMON_LDFLAGS)
+endif
 
+if HAVE_SWR_AVX2
+lib_LTLIBRARIES += libswrAVX2.la
 libswrAVX2_la_CXXFLAGS = \
 	$(SWR_AVX2_CXXFLAGS) \
 	-DKNOB_ARCH=KNOB_ARCH_AVX2 \
@@ -247,6 +261,7 @@ libswrAVX2_la_SOURCES = \
 
 libswrAVX2_la_LDFLAGS = \
 	$(COMMON_LDFLAGS)
+endif
 
 include $(top_srcdir)/install-gallium-links.mk