android: fix Android.mk bug in mesa/drivers/dri/common

target-specific variables are undefined when used as pre-requisites.
instead, use secondary-expansion.

I noticed this when building the patch:
     i965: Add a driconf option to disable flush throttling

Signed-off-by: Adrian Marius Negreanu <adrian.m.negreanu@intel.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>

diff --git a/src/mesa/drivers/dri/common/Android.mk b/src/mesa/drivers/dri/common/Android.mk
index f428c38557a0821150e4044aca3a698989456053..b3dac29dd4424cd088406377ec915a21fc671b9f 100644 (file)
--- a/src/mesa/drivers/dri/common/Android.mk
+++ b/src/mesa/drivers/dri/common/Android.mk
@@ -77,7 +77,8 @@ $(intermediates)/xmlpool/options.h: PRIVATE_SCRIPT := $(LOCAL_PATH)/xmlpool/gen_
 $(intermediates)/xmlpool/options.h: PRIVATE_LOCALEDIR := $(intermediates)/xmlpool
 $(intermediates)/xmlpool/options.h: PRIVATE_TEMPLATE_HEADER := $(LOCAL_PATH)/xmlpool/t_options.h
 $(intermediates)/xmlpool/options.h: PRIVATE_MO_FILES := $(MESA_DRI_OPTIONS_LANGS:%=$(intermediates)/xmlpool/%/LC_MESSAGES/options.mo)
-$(intermediates)/xmlpool/options.h: $(PRIVATE_SCRIPT) $(PRIVATE_TEMPLATE_HEADER) $(PRIVATE_MO_FILES)
+.SECONDEXPANSION:
+$(intermediates)/xmlpool/options.h: $$(PRIVATE_SCRIPT) $$(PRIVATE_TEMPLATE_HEADER) $$(PRIVATE_MO_FILES)
        mkdir -p $(dir $@)
        mkdir -p $(PRIVATE_LOCALEDIR)
        $(MESA_PYTHON2) $(PRIVATE_SCRIPT) $(PRIVATE_TEMPLATE_HEADER) \