egl,gbm_gallium: Fix linkage against gbm from automake

Add src/gbm/.libs to ldflags.
The gbm lib is src/gbm/.libs/ instead of lib/
as of commit 06ad64ad29.

src/egl/main/Makefile

@@ -77,6 +77,7 @@ INCLUDE_DIRS += $(WAYLAND_CFLAGS)
 endif
 ifneq ($(findstring drm, $(EGL_PLATFORMS)),)
 EGL_LIB_DEPS += -lgbm
+LDFLAGS += -L$(TOP)/src/gbm/.libs
 INCLUDE_DIRS += -I$(TOP)/src/gbm/main
 endif
 

src/gallium/targets/egl-static/Makefile

@@ -58,6 +58,7 @@ endif
 ifneq ($(findstring drm, $(EGL_PLATFORMS)),)
 egl_CPPFLAGS += $(LIBDRM_CFLAGS)
 egl_SYS += $(LIBDRM_LIB) -lgbm
+LDFLAGS += -L$(TOP)/src/gbm/.libs
 endif
 ifneq ($(findstring fbdev, $(EGL_PLATFORMS)),)
 egl_LIBS += $(TOP)/src/gallium/winsys/sw/fbdev/libfbdev.a

src/gbm/backends/Makefile.template

@@ -32,9 +32,9 @@ $(GBM_BACKEND_PATH): $(GBM_BACKEND).so
 
 $(GBM_BACKEND).so: $(GBM_OBJECTS) Makefile $(TOP)/src/gbm/backends/Makefile.template
 	@$(MKLIB) -o $(GBM_BACKEND).so -noprefix \
-		-linker '$(CC)' -ldflags '-L$(TOP)/$(LIB_DIR) $(LDFLAGS)' \
+		-linker '$(CC)' -ldflags '-L$(TOP)/src/gbm/.libs $(LDFLAGS)' \
 		$(MKLIB_OPTIONS) \
-		$(GBM_OBJECTS) $(GBM_LIBS) -l$(GBM_LIB)
+		$(GBM_OBJECTS) $(GBM_LIBS) -lgbm
 
 lib$(GBM_BACKEND).a: $(GBM_OBJECTS) Makefile $(TOP)/src/gbm/backends/Makefile.template
 	@$(MKLIB) -o $(GBM_BACKEND) -static $(GBM_OBJECTS)