Android.mk revision d286796fce1e6fff407b719a53eb2afbeb96c327 
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
21LOCAL_LDFLAGS_x86 := -Wl,--exclude-libs=libgcc_eh.a
22LOCAL_LDFLAGS_x86_64 := $(LOCAL_LDFLAGS_x86)
23
24LOCAL_SRC_FILES:= libdl.c
25LOCAL_CFLAGS := -Wall -Wextra -Wunused -Werror
26
27LOCAL_MODULE := libdl
28LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
29
30# NOTE: libdl needs __aeabi_unwind_cpp_pr0 from libgcc.a but libgcc.a needs a
31# few symbols from libc. Using --no-undefined here results in having to link
32# against libc creating a circular dependency which is removed and we end up
33# with missing symbols. Since this library is just a bunch of stubs, we set
34# LOCAL_ALLOW_UNDEFINED_SYMBOLS to remove --no-undefined from the linker flags.
35LOCAL_ALLOW_UNDEFINED_SYMBOLS := true
36LOCAL_SYSTEM_SHARED_LIBRARIES :=
37
38include $(BUILD_SHARED_LIBRARY)
39