build: add libnir.la

If we want to use NIR from state trackers that don't already pull in the
whole of glsl (ie. anything other than mesa state tracker), we need a
separate more minimal libnir.  Possibly NIR should be better split out
from glsl, but for now, generate a second smaller libnir.la for those
who just want NIR but not all of glsl.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

src/glsl/Makefile.am

@@ -68,7 +68,7 @@ TESTS_ENVIRONMENT= \
 	export PYTHON2=$(PYTHON2); \
 	export PYTHON_FLAGS=$(PYTHON_FLAGS);
 
-noinst_LTLIBRARIES = libglsl.la libglcpp.la
+noinst_LTLIBRARIES = libnir.la libglsl.la libglcpp.la
 check_PROGRAMS =					\
 	glcpp/glcpp					\
 	glsl_test					\
@@ -148,6 +148,12 @@ libglsl_la_SOURCES =					\
 	$(LIBGLSL_FILES)				\
 	$(NIR_FILES)
 
+libnir_la_SOURCES =					\
+	glsl_types.cpp					\
+	builtin_types.cpp				\
+	glsl_symbol_table.cpp				\
+	$(NIR_FILES)
+
 glsl_compiler_SOURCES = \
 	$(GLSL_COMPILER_CXX_FILES)