Reorganize FORTIFY_SOURCE tests.

Get rid of a lot of the duplication in the various FORTIFY_SOURCE
tests. Instead, we build 4 separate static libraries, with
4 different compile time options, and link them into the final test
binary.

Change-Id: Idb0b7cccc8dd837adb037bf4ddfe8942ae138230
diff --git a/tests/Android.mk b/tests/Android.mk
index d94c77c..b7a6080 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -61,8 +61,6 @@
     dirent_test.cpp \
     eventfd_test.cpp \
     fenv_test.cpp \
-    fortify1_test.cpp \
-    fortify2_test.cpp \
     getauxval_test.cpp \
     getcwd_test.cpp \
     libc_logging_test.cpp \
@@ -88,6 +86,9 @@
 test_dynamic_src_files = \
     dlfcn_test.cpp \
 
+test_fortify_static_libraries = \
+    fortify1-tests-gcc fortify2-tests-gcc fortify1-tests-clang fortify2-tests-clang
+
 include $(CLEAR_VARS)
 LOCAL_MODULE := bionic-unit-tests-unwind-test-impl
 LOCAL_CFLAGS += $(test_c_flags) -fexceptions -fnon-call-exceptions
@@ -109,7 +110,7 @@
 LOCAL_LDFLAGS += $(test_dynamic_ldflags)
 LOCAL_SHARED_LIBRARIES += libdl
 LOCAL_SRC_FILES := $(test_src_files) $(test_dynamic_src_files)
-LOCAL_WHOLE_STATIC_LIBRARIES := bionic-unit-tests-clang
+LOCAL_WHOLE_STATIC_LIBRARIES := $(test_fortify_static_libraries)
 LOCAL_STATIC_LIBRARIES += bionic-unit-tests-unwind-test-impl
 include $(BUILD_NATIVE_TEST)
 
@@ -122,7 +123,7 @@
 LOCAL_FORCE_STATIC_EXECUTABLE := true
 LOCAL_SRC_FILES := $(test_src_files)
 LOCAL_STATIC_LIBRARIES += libstlport_static libstdc++ libm libc bionic-unit-tests-unwind-test-impl
-LOCAL_WHOLE_STATIC_LIBRARIES := bionic-unit-tests-clang
+LOCAL_WHOLE_STATIC_LIBRARIES := $(test_fortify_static_libraries)
 include $(BUILD_NATIVE_TEST)
 
 # -----------------------------------------------------------------------------
@@ -161,25 +162,54 @@
 endif
 
 # -----------------------------------------------------------------------------
-# Unit tests which depend on clang as the compiler
+# FORTIFY_SOURCE tests
 # -----------------------------------------------------------------------------
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES := fortify1_test_clang.cpp fortify2_test_clang.cpp
-LOCAL_MODULE := bionic-unit-tests-clang
-LOCAL_CLANG := true
+
+fortify_c_includes = \
+    bionic \
+    bionic/libstdc++/include \
+    external/stlport/stlport \
+    external/gtest/include
+fortify_test_files = fortify_test.cpp
 
 # -Wno-error=unused-parameter needed as
 # external/stlport/stlport/stl/_threads.c (included from
 # external/gtest/include/gtest/gtest.h) does not compile cleanly under
 # clang. TODO: fix this.
-LOCAL_CFLAGS += $(test_c_flags) -Wno-error=unused-parameter
+fortify_c_flags = $(test_c_flags) -Wno-error=unused-parameter
 
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := $(fortify_test_files)
+LOCAL_MODULE := fortify1-tests-gcc
+LOCAL_CFLAGS += $(fortify_c_flags) -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DTEST_NAME=Fortify1_Gcc
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
-LOCAL_C_INCLUDES += bionic \
-                    bionic/libstdc++/include \
-                    external/stlport/stlport \
-                    external/gtest/include
+LOCAL_C_INCLUDES += $(fortify_c_includes)
+include $(BUILD_STATIC_LIBRARY)
 
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := $(fortify_test_files)
+LOCAL_MODULE := fortify2-tests-gcc
+LOCAL_CFLAGS += $(fortify_c_flags) -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -DTEST_NAME=Fortify2_Gcc
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+LOCAL_C_INCLUDES += $(fortify_c_includes)
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := $(fortify_test_files)
+LOCAL_MODULE := fortify1-tests-clang
+LOCAL_CLANG := true
+LOCAL_CFLAGS += $(fortify_c_flags) -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DTEST_NAME=Fortify1_Clang
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+LOCAL_C_INCLUDES += $(fortify_c_includes)
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := $(fortify_test_files)
+LOCAL_MODULE := fortify2-tests-clang
+LOCAL_CLANG := true
+LOCAL_CFLAGS += $(fortify_c_flags) -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -DTEST_NAME=Fortify2_Clang
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+LOCAL_C_INCLUDES += $(fortify_c_includes)
 include $(BUILD_STATIC_LIBRARY)
 
 endif # !BUILD_TINY_ANDROID