android : static & share library

從 bionic/libc/Android.mk 可以看到同時 build static (.a) 和 share (.so) library 的 Makefile:

	# ========================================================
	# libc.a
	# ========================================================
	include $(CLEAR_VARS)
	LOCAL_SRC_FILES := \
	$(libc_arch_static_src_files) \
	$(libc_static_common_src_files) \
	bionic/dlmalloc.c \
	bionic/malloc_debug_common.c \
	bionic/libc_init_static.c
	LOCAL_CFLAGS := $(libc_common_cflags) \
	-DLIBC_STATIC
	LOCAL_C_INCLUDES := $(libc_common_c_includes)
	LOCAL_MODULE := libc
	LOCAL_WHOLE_STATIC_LIBRARIES := libc_common
	LOCAL_SYSTEM_SHARED_LIBRARIES :=
	include $(BUILD_STATIC_LIBRARY)
	# ========================================================
	# libc.so
	# ========================================================
	include $(CLEAR_VARS)
	LOCAL_CFLAGS := $(libc_common_cflags)
	LOCAL_C_INCLUDES := $(libc_common_c_includes)
	LOCAL_SRC_FILES := \
	$(libc_arch_dynamic_src_files) \
	$(libc_static_common_src_files) \
	bionic/dlmalloc.c \
	bionic/malloc_debug_common.c \
	bionic/libc_init_dynamic.c
	LOCAL_MODULE:= libc
	LOCAL_SHARED_LIBRARIES := libdl
	LOCAL_WHOLE_STATIC_LIBRARIES := libc_common
	LOCAL_SYSTEM_SHARED_LIBRARIES :=
	include $(BUILD_SHARED_LIBRARY)

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