Build system tweaks for Valgrind.

Added LOCAL_NO_CRT to enable building executables that do not link
to the C runtime library.

Removed support for LOCAL_MODULE_SUBDIR since it was broken
and unused.  (Was going to use it but ended up using LOCAL_MODULE_PATH
instead.)

Change-Id: I3b6f5ab7e5ae6aaa7119899adccece2b4ab1cbb3

8 files changed, 24 insertions, 21 deletions

diff --git a/core/base_rules.mk b/core/base_rules.mk
index 107af9b..1178800 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -202,7 +202,7 @@ ifdef LOCAL_UNINSTALLABLE_MODULE
     $(error $(LOCAL_PATH): Illegal use of LOCAL_UNINSTALLABLE_MODULE)
   endif
 else
-  LOCAL_INSTALLED_MODULE := $(LOCAL_MODULE_PATH)/$(LOCAL_MODULE_SUBDIR)$(LOCAL_INSTALLED_MODULE_STEM)
+  LOCAL_INSTALLED_MODULE := $(LOCAL_MODULE_PATH)/$(LOCAL_INSTALLED_MODULE_STEM)
 endif
 
 # Assemble the list of targets to create PRIVATE_ variables for.
diff --git a/core/binary.mk b/core/binary.mk
index 88c356a..71b9a46 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -539,6 +539,7 @@ $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_DEBUG_CFLAGS := $(debug_cflags)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_C_INCLUDES := $(LOCAL_C_INCLUDES)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_LDFLAGS := $(LOCAL_LDFLAGS)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_LDLIBS := $(LOCAL_LDLIBS)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_NO_CRT := $(LOCAL_NO_CRT)
 
 # this is really the way to get the files onto the command line instead
 # of using $^, because then LOCAL_ADDITIONAL_DEPENDENCIES doesn't work
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index ca70c55..0d2e215 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -105,6 +105,7 @@ LOCAL_BUILD_HOST_DEX:=
 LOCAL_DEX_PREOPT:=
 LOCAL_PROTOC_OPTIMIZE_TYPE:= # lite(default),micro,full
 LOCAL_PROTOC_FLAGS:=
+LOCAL_NO_CRT:=
 
 # Trim MAKEFILE_LIST so that $(call my-dir) doesn't need to
 # iterate over thousands of entries every time.
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index e96ebce..6b351fb 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -237,7 +237,7 @@ $(hide) $(PRIVATE_CXX) \
 	-Wl,-shared,-Bsymbolic \
 	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
 	$(PRIVATE_ALL_OBJECTS) \
-	$(PRIVATE_TARGET_CRTBEGIN_SO_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
 	-Wl,--whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
 	-Wl,--no-whole-archive \
@@ -248,7 +248,7 @@ $(hide) $(PRIVATE_CXX) \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_TARGET_FDO_LIB) \
 	$(PRIVATE_TARGET_LIBGCC) \
-	$(PRIVATE_TARGET_CRTEND_SO_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
 endef
 
 define transform-o-to-executable-inner
@@ -260,14 +260,14 @@ $(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \
 	$(TARGET_GLOBAL_LD_DIRS) \
 	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
-	$(TARGET_CRTBEGIN_DYNAMIC_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_DYNAMIC_O)) \
 	$(PRIVATE_ALL_OBJECTS) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(TARGET_GLOBAL_LDFLAGS) \
 	$(PRIVATE_LDFLAGS) \
 	$(TARGET_FDO_LIB) \
 	$(TARGET_LIBGCC) \
-	$(TARGET_CRTEND_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O))
 endef
 
 define transform-o-to-static-executable-inner
@@ -275,7 +275,7 @@ $(hide) $(PRIVATE_CXX) -nostdlib -Bstatic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \
     -Wl,--gc-sections \
 	-o $@ \
 	$(TARGET_GLOBAL_LD_DIRS) \
-	$(TARGET_CRTBEGIN_STATIC_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_STATIC_O)) \
 	$(TARGET_GLOBAL_LDFLAGS) \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_ALL_OBJECTS) \
@@ -286,5 +286,5 @@ $(hide) $(PRIVATE_CXX) -nostdlib -Bstatic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \
 	$(TARGET_FDO_LIB) \
 	$(TARGET_LIBGCC) \
 	-Wl,--end-group \
-	$(TARGET_CRTEND_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O))
 endef
diff --git a/core/combo/TARGET_linux-sh.mk b/core/combo/TARGET_linux-sh.mk
index 036ecd7..654539c 100644
--- a/core/combo/TARGET_linux-sh.mk
+++ b/core/combo/TARGET_linux-sh.mk
@@ -105,6 +105,7 @@ TARGET_C_INCLUDES := \
 TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_static.o
 TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_dynamic.o
 TARGET_CRTEND_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_android.o
+
 TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/sobegin.o
 TARGET_CRTEND_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/soend.o
 
@@ -119,7 +120,7 @@ $(hide) $(PRIVATE_CXX) \
 	-Wl,--gc-sections -Wl,-z,norelro \
 	-Wl,-shared,-Bsymbolic \
 	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
-	$(PRIVATE_TARGET_CRTBEGIN_SO_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
@@ -130,7 +131,7 @@ $(hide) $(PRIVATE_CXX) \
 	$(PRIVATE_LDFLAGS) \
 	$(subst -lrt,, $(subst -lpthread,,$(PRIVATE_LDLIBS))) \
 	$(PRIVATE_TARGET_LIBGCC) \
-	$(PRIVATE_TARGET_CRTEND_SO_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
 endef
 
 define transform-o-to-executable-inner
@@ -142,13 +143,13 @@ $(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic  -Wl,-T,$(BUILD_SYSTEM)/shlelf.x \
 	$(TARGET_GLOBAL_LD_DIRS) \
 	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
-	$(TARGET_CRTBEGIN_DYNAMIC_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_DYNAMIC_O)) \
 	$(PRIVATE_ALL_OBJECTS) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(PRIVATE_LDFLAGS) \
 	$(TARGET_LIBGCC) \
 	$(subst -lrt,, $(subst -lpthread,,$(PRIVATE_LDLIBS))) \
-	$(TARGET_CRTEND_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O))
 endef
 
 define transform-o-to-static-executable-inner
@@ -156,11 +157,11 @@ $(hide) $(PRIVATE_CXX) -nostdlib -Bstatic  -Wl,-T,$(BUILD_SYSTEM)/shlelf.x \
 	-Wl,--gc-sections -Wl,-z,norelro \
 	-o $@ \
 	$(TARGET_GLOBAL_LD_DIRS) \
-	$(TARGET_CRTBEGIN_STATIC_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_STATIC_O)) \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_ALL_OBJECTS) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(TARGET_LIBGCC) \
 	$(subst -lrt,, $(subst -lpthread,,$(PRIVATE_LDLIBS))) \
-	$(TARGET_CRTEND_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O))
 endef
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index c234cf6..412ec69 100644
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -107,7 +107,6 @@ TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_static.o
 TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_dynamic.o
 TARGET_CRTEND_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_android.o
 
-
 TARGET_CRTBEGIN_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_so.o
 TARGET_CRTEND_SO_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_so.o
 
@@ -123,7 +122,7 @@ $(hide) $(PRIVATE_CXX) \
 	 -shared -Bsymbolic \
 	$(TARGET_GLOBAL_CFLAGS) \
 	$(PRIVATE_TARGET_GLOBAL_LD_DIRS) \
-	$(PRIVATE_TARGET_CRTBEGIN_SO_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTBEGIN_SO_O)) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--whole-archive \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
@@ -133,7 +132,7 @@ $(hide) $(PRIVATE_CXX) \
 	-o $@ \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_TARGET_LIBGCC) \
-	$(PRIVATE_TARGET_CRTEND_SO_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O))
 endef
 
 
@@ -147,12 +146,12 @@ $(hide) $(PRIVATE_CXX) \
 	$(TARGET_GLOBAL_LD_DIRS) \
 	-Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
-	$(TARGET_CRTBEGIN_DYNAMIC_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_DYNAMIC_O)) \
 	$(PRIVATE_ALL_OBJECTS) \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(PRIVATE_LDFLAGS) \
 	$(TARGET_LIBGCC) \
-	$(TARGET_CRTEND_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O))
 endef
 
 define transform-o-to-static-executable-inner
@@ -161,14 +160,14 @@ $(hide) $(PRIVATE_CXX) \
 	-nostdlib -Bstatic \
 	-o $@ \
 	$(TARGET_GLOBAL_LD_DIRS) \
-	$(TARGET_CRTBEGIN_STATIC_O) \
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTBEGIN_STATIC_O)) \
 	$(PRIVATE_LDFLAGS) \
 	$(PRIVATE_ALL_OBJECTS) \
 	-Wl,--start-group \
 	$(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
 	$(TARGET_LIBGCC) \
 	-Wl,--end-group \
-	$(TARGET_CRTEND_O)
+	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(TARGET_CRTEND_O))
 endef
 
 endif #simulator
diff --git a/core/definitions.mk b/core/definitions.mk
index b6f4515..6fd4b99 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -716,6 +716,7 @@ define dump-module-variables
 @echo PRIVATE_ALL_STATIC_LIBRARIES=$(PRIVATE_ALL_STATIC_LIBRARIES);
 @echo PRIVATE_ALL_WHOLE_STATIC_LIBRARIES=$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES);
 @echo PRIVATE_ALL_OBJECTS=$(PRIVATE_ALL_OBJECTS);
+@echo PRIVATE_NO_CRT=$(PRIVATE_NO_CRT);
 endef
 
 ###########################################################
diff --git a/core/dynamic_binary.mk b/core/dynamic_binary.mk
index 0fa7647..005ccf3 100644
--- a/core/dynamic_binary.mk
+++ b/core/dynamic_binary.mk
@@ -94,7 +94,7 @@ prelink_input := $(compress_output)
 # The output of the prelink step is the binary we want to use
 # for symbolic debugging;  the prelink step may move sections
 # around, so we have to use this version.
-prelink_output := $(LOCAL_UNSTRIPPED_PATH)/$(LOCAL_MODULE_SUBDIR)$(LOCAL_BUILT_MODULE_STEM)
+prelink_output := $(LOCAL_UNSTRIPPED_PATH)/$(LOCAL_BUILT_MODULE_STEM)
 
 # Skip prelinker if it is FDO instrumentation build.
 ifneq ($(strip $(BUILD_FDO_INSTRUMENT)),)