1LOCAL_PATH:= $(call my-dir) 2 3# 4# libdl 5# 6 7include $(CLEAR_VARS) 8 9# NOTE: --exclude-libs=libgcc.a makes sure that any symbols libdl.so pulls from 10# libgcc.a are made static to libdl.so. This in turn ensures that libraries that 11# a) pull symbols from libgcc.a and b) depend on libdl.so will not rely on libdl.so 12# to provide those symbols, but will instead pull them from libgcc.a. Specifically, 13# we use this property to make sure libc.so has its own copy of the code from 14# libgcc.a it uses. 15# 16# DO NOT REMOVE --exclude-libs! 17 18LOCAL_LDFLAGS := -Wl,--exclude-libs=libgcc.a 19 20# for x86, exclude libgcc_eh.a for the same reasons as above 21ifeq ($(TARGET_ARCH),x86) 22LOCAL_LDFLAGS += -Wl,--exclude-libs=libgcc_eh.a 23endif 24 25LOCAL_SRC_FILES:= libdl.c 26 27LOCAL_MODULE:= libdl 28 29# NOTE: libdl needs __aeabi_unwind_cpp_pr0 from libgcc.a but libgcc.a needs a 30# few symbols from libc. Using --no-undefined here results in having to link 31# against libc creating a circular dependency which is removed and we end up 32# with missing symbols. Since this library is just a bunch of stubs, we set 33# LOCAL_ALLOW_UNDEFINED_SYMBOLS to remove --no-undefined from the linker flags. 34LOCAL_ALLOW_UNDEFINED_SYMBOLS := true 35LOCAL_SYSTEM_SHARED_LIBRARIES := 36 37ifeq ($(TARGET_ARCH),sh) 38# for SuperH, additional code is necessary to handle .ctors section. 39GEN_SOBEGIN := $(TARGET_OUT_STATIC_LIBRARIES)/sobegin.o 40$(GEN_SOBEGIN): $(LOCAL_PATH)/arch-sh/sobegin.S 41 @mkdir -p $(dir $@) 42 $(TARGET_CC) -o $@ -c $< 43 44GEN_SOEND := $(TARGET_OUT_STATIC_LIBRARIES)/soend.o 45$(GEN_SOEND): $(LOCAL_PATH)/arch-sh/soend.S 46 @mkdir -p $(dir $@) 47 $(TARGET_CC) -o $@ -c $< 48 49LOCAL_ADDITIONAL_DEPENDENCIES := $(GEN_SOBEGIN) $(GEN_SOEND) 50endif 51 52include $(BUILD_SHARED_LIBRARY) 53 54BUILD_DLTEST:=0 55ifeq ($(BUILD_DLTEST),1) 56 57# 58# dltest 59# 60 61include $(CLEAR_VARS) 62 63LOCAL_SRC_FILES:= dltest.c 64 65LOCAL_MODULE:= dltest 66 67LOCAL_SHARED_LIBRARIES := libdl 68 69include $(BUILD_EXECUTABLE) 70 71endif 72