Android.mk revision 7e5d19c055e50232fc566978e2bab332ccc6894e 
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