anv/entrypoints: don't go using wayland/xcb unless they are configured

The fix in:
anv: let anv_entrypoints_gen.py generate proper Wayland/Xcb guards

breaks things if wayland headers aren't installed.

Separate things out properly to avoid that problem.

[airlied: fixed up to put in pre-existing sections].
Reported-by: Arjan van de Ven
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/intel/vulkan/Makefile.am

@@ -82,12 +82,17 @@ VULKAN_SOURCES = \
 
 VULKAN_LIB_DEPS =
 
+VULKAN_ENTRYPOINT_CPPFLAGS =
 
 if HAVE_PLATFORM_X11
 AM_CPPFLAGS += \
 	$(XCB_DRI3_CFLAGS) \
 	-DVK_USE_PLATFORM_XCB_KHR
 
+VULKAN_ENTRYPOINT_CPPFLAGS += \
+	$(XCB_DRI3_CFLAGS) \
+	-DVK_USE_PLATFORM_XCB_KHR
+
 VULKAN_SOURCES += $(VULKAN_WSI_X11_FILES)
 VULKAN_LIB_DEPS += $(XCB_DRI3_LIBS)
 endif
@@ -100,6 +105,10 @@ AM_CPPFLAGS += \
 	$(WAYLAND_CFLAGS) \
 	-DVK_USE_PLATFORM_WAYLAND_KHR
 
+VULKAN_ENTRYPOINT_CPPFLAGS += \
+	$(WAYLAND_CFLAGS) \
+	-DVK_USE_PLATFORM_WAYLAND_KHR
+
 VULKAN_SOURCES += $(VULKAN_WSI_WAYLAND_FILES)
 
 VULKAN_LIB_DEPS += \
@@ -124,12 +133,6 @@ VULKAN_LIB_DEPS += \
 nodist_EXTRA_libvulkan_intel_la_SOURCES = dummy.cpp
 libvulkan_intel_la_SOURCES = $(VULKAN_GEM_FILES)
 
-VULKAN_ENTRYPOINT_CPPFLAGS = \
-	$(XCB_DRI3_CFLAGS) \
-	$(WAYLAND_CFLAGS) \
-	-DVK_USE_PLATFORM_XCB_KHR \
-	-DVK_USE_PLATFORM_WAYLAND_KHR
-
 anv_entrypoints.h : anv_entrypoints_gen.py $(vulkan_include_HEADERS)
 	$(AM_V_GEN)$(CPP) $(VULKAN_ENTRYPOINT_CPPFLAGS) $(top_srcdir)/include/vulkan/vulkan_intel.h |\
 	$(PYTHON2) $(srcdir)/anv_entrypoints_gen.py header > $@