auto import from //depot/cupcake/@135843

1 files changed, 58 insertions, 0 deletions

diff --git a/libdl/Android.mk b/libdl/Android.mk
new file mode 100644
index 0000000..150f704
--- /dev/null
+++ b/libdl/Android.mk
@@ -0,0 +1,58 @@
+LOCAL_PATH:= $(call my-dir)
+
+#
+# libdl
+#
+
+include $(CLEAR_VARS)
+
+# NOTE: --exclude-libs=libgcc.a makes sure that any symbols libdl.so pulls from 
+# libgcc.a are made static to libdl.so.  This in turn ensures that libraries that
+# a) pull symbols from libgcc.a and b) depend on libdl.so will not rely on libdl.so
+# to provide those symbols, but will instead pull them from libgcc.a.  Specifically,
+# we use this property to make sure libc.so has its own copy of the code from 
+# libgcc.a it uses.
+#
+# DO NOT REMOVE --exclude-libs!
+
+LOCAL_LDFLAGS := -Wl,--exclude-libs=libgcc.a
+
+# for x86, exclude libgcc_eh.a for the same reasons as above
+ifneq ($(TARGET_SIMULATOR),true)
+ifeq ($(TARGET_ARCH),x86)
+LOCAL_LDFLAGS += -Wl,--exclude-libs=libgcc_eh.a
+endif
+endif
+
+LOCAL_SRC_FILES:= libdl.c
+
+LOCAL_MODULE:= libdl
+
+# NOTE: libdl needs __aeabi_unwind_cpp_pr0 from libgcc.a but libgcc.a needs a
+# few symbols from libc. Using --no-undefined here results in having to link
+# against libc creating a circular dependency which is removed and we end up
+# with missing symbols. Since this library is just a bunch of stubs, we set
+# LOCAL_ALLOW_UNDEFINED_SYMBOLS to remove --no-undefined from the linker flags.
+LOCAL_ALLOW_UNDEFINED_SYMBOLS := true
+LOCAL_SYSTEM_SHARED_LIBRARIES := 
+
+include $(BUILD_SHARED_LIBRARY)
+
+BUILD_DLTEST:=0
+ifeq ($(BUILD_DLTEST),1)
+
+#
+# dltest
+#
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= dltest.c
+
+LOCAL_MODULE:= dltest 
+
+LOCAL_SHARED_LIBRARIES := libdl
+
+include $(BUILD_EXECUTABLE)
+
+endif