c++ - Android NDK: Multiple definition of .o and .c files -
i want implement library java , native code in app project in android studio. everytime when change c++ code, have recompile c++ files changes take effect in app. unfortunately ndk-build command not compile completely...
everytime run command, compiles c++ files , when tries create .so-files lots of errors looking (just others classes). changes simple , did not add c++ include headers etc.
/users/jenny/appproject/librarywithnativecode/src/main/obj/local/armeabi/objs/librarywithnativecode-mobile-example-app/src/worldpins/worldpinmessage.o: in function `_stlp_alloc_proxy': /users/jenny/ndk/android-ndk-r10e/sources/cxx-stl/stlport/stlport/stl/_string.c:647: multiple definition of `exampleapp::worldpins::worldpinmessage::focussedmodel() const' /users/jenny/appproject/librarywithnativecode/src/main/obj/local/armeabi/objs/librarywithnativecode-mobile-example-app/src/worldpins/worldpinmessage.o:/users/jenny/ndk/android-ndk-r10e/sources/cxx-stl/stlport/stlport/stl/_string.c:647: first defined here my android.mk , application.mk looks following
android.mk
local_path := $(call my-dir) $(info target_arch_abi $(target_arch_abi)) $(info local_path $(local_path)) prebuilt_libs := $(local_path)/../libs/librarywithnativecode/prebuilt/android-$(target_arch_abi) include $(clear_vars) local_module := librarywithnativecode-sdk-lib local_src_files := $(prebuilt_libs)/librarywithnativecode-sdk.a include $(prebuilt_static_library) include $(clear_vars) local_module := png-lib local_src_files := $(prebuilt_libs)/libpng.a local_export_c_includes := $(local_path)/../libs/librarywithnativecode/png include $(prebuilt_static_library) include $(clear_vars) local_module := curl-lib local_src_files := $(prebuilt_libs)/libcurl.a local_export_c_includes := $(local_path)/../libs/librarywithnativecode/curl/android-$(target_arch_abi) include $(prebuilt_static_library) include $(clear_vars) local_module := ssl-lib local_src_files := $(prebuilt_libs)/libssl.a include $(prebuilt_static_library) include $(clear_vars) local_module := crypto-lib local_src_files := $(prebuilt_libs)/libcrypto.a include $(prebuilt_static_library) include $(clear_vars) local_module := http-parser-lib local_src_files := $(prebuilt_libs)/libhttp-parser.a local_export_c_includes := $(local_path)/../libs/librarywithnativecode/http-parser include $(prebuilt_static_library) include $(clear_vars) local_module := jpeg-lib local_src_files := $(prebuilt_libs)/libjpeg.a include $(prebuilt_static_library) include $(clear_vars) local_module := turbojpeg-lib local_src_files := $(prebuilt_libs)/libturbojpeg.a local_export_c_includes := $(local_path)/../libs/librarywithnativecode/jpeg-turbo include $(prebuilt_static_library) include $(clear_vars) local_module := librarywithnativecode-mobile-example-app local_ldlibs := -llog -landroid -legl -lglesv2 -lz -lm local_ldlibs += -fuse-ld=bfd local_static_libraries := librarywithnativecode-sdk-lib png-lib curl-lib ssl-lib crypto-lib http-parser-lib jpeg-lib turbojpeg-lib android_native_app_glue ndk_helper local_cflags += -wall -wno-unknown-pragmas -wno-sign-compare -wno-format-security -wno-reorder #local_cflags += -werror ifdef compile_cpp_11 $(info configured c++11) local_cppflags += -dcompile_cpp_11=1 -std=c++11 else $(info configured c++0x) endif os_name:=$(shell uname -s) get_android_cpp_files_cmd := find $(local_path) -type f -iname "*.cpp" get_android_includes_cmd := find $(local_path) -type d get_shared_cpp_files_cmd := find $(local_path)/src -type f -iname "*.cpp" get_shared_includes_cmd := find $(local_path)/src -type d get_platform_includes_cmd := find $(local_path)/../libs/librarywithnativecode/platform -type d ! -path "*/osx/*" ! -path "*/ios/*" ifeq ($(os_name),darwin) cppfiles := ${shell ${get_android_cpp_files_cmd}} cppfiles += ${shell ${get_shared_cpp_files_cmd}} includes := ${shell ${get_android_includes_cmd}} includes += ${shell ${get_shared_includes_cmd}} includes += ${shell ${get_platform_includes_cmd}} else # assume windows if not specified (due no uname) cppfiles := ${shell sh -c '${get_android_cpp_files_cmd}'} cppfiles += ${shell sh -c '${get_shared_cpp_files_cmd}'} includes := ${shell sh -c '${get_android_includes_cmd}'} includes += ${shell sh -c '${get_shared_includes_cmd}'} includes += ${shell sh -c '${get_platform_includes_cmd}'} endif local_src_files := $(cppfiles:$(local_path)/%=%) local_c_includes := $(includes) local_c_includes += $(local_path)/../libs/librarywithnativecode/rapidjson local_c_includes += $(local_path)/../libs/librarywithnativecode/rapidjson/internal include $(build_shared_library) $(call import-module,android/native_app_glue) $(call import-module,android/ndk_helper) application.mk
app_platform := android-12 app_stl := stlport_shared app_abi := armeabi,armeabi-v7a,arm64-v8a anyone has idea how fix this?
i think root cause of problem you're including same files more once compilation since get_android_cpp_files_cmd (find $(local_path) -type f -iname "*.cpp") returning files returned get_shared_cpp_files_cmd (find $(local_path)/src -type f -iname "*.cpp") find recursive.
also, unrelated issue, wonder why you're compiling armeabi, armeabi-v7a, arm64-v8a, , targeting android-12+ ? honeycomb_mr1 quite confidential version, why not directly targeting kitkat+ instead, , including x86 arch in list?
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