[Build Issue] undefined reference errors when building/linking crosswalk 23 for Android

[arshcaria]

I was building crosswalk 23 for Android following the guide provided in https://crosswalk-project.org/contribute/building_crosswalk/android_build.html.

The building for 3rd party sources were successful but when building/linking the xwalk source, it reported some undefined reference errors and failed.

The commands I used to build the source:
$ gn args out/Default
// then added import("//xwalk/build/android.gni") and target_os = "android" to the given file.
$ ninja -C out/Default xwalk

The build log is:

ninja: Entering directory `out/Default'
[1/1] LINK ./xwalk
FAILED: xwalk exe.unstripped/xwalk 
python "../../build/toolchain/gcc_link_wrapper.py" --strip="../../third_party/android_tools/ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-strip" --unstripped-file="./exe.unstripped/xwalk" --output="./xwalk" -- ../../third_party/android_tools/ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++ -Wl,--fatal-warnings -fPIC -Wl,-z,noexecstack -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -fuse-ld=gold -Wl,--icf=all -Wl,--build-id=sha1 -Wl,--no-undefined -Wl,--exclude-libs=libgcc.a -Wl,--exclude-libs=libc++_static.a -Wl,--exclude-libs=libvpx_assembly_arm.a -Wl,--warn-shared-textrel -Wl,-O1 -Wl,--as-needed -nostdlib -Wl,--warn-shared-textrel --sysroot=../../third_party/android_tools/ndk/platforms/android-16/arch-arm  -Bdynamic -Wl,-z,nocopyreloc -pie -Wl,-wrap,calloc -Wl,-wrap,free -Wl,-wrap,malloc -Wl,-wrap,memalign -Wl,-wrap,posix_memalign -Wl,-wrap,pvalloc -Wl,-wrap,realloc -Wl,-wrap,valloc -L../../third_party/android_tools/ndk/sources/cxx-stl/llvm-libc++/libs/armeabi-v7a -o "./exe.unstripped/xwalk" -Wl,--start-group @"./xwalk.rsp"  -Wl,--end-group ../../third_party/android_tools/ndk/platforms/android-16/arch-arm/usr/lib/crtbegin_dynamic.o -lc++_static ../../third_party/android_tools/ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/lib/gcc/arm-linux-androideabi/4.9/libgcc.a -lc -latomic -ldl -lm -llog -landroid -ljnigraphics -lGLESv2 ../../third_party/android_tools/ndk/platforms/android-16/arch-arm/usr/lib/crtend_android.o
../../xwalk/runtime/browser/android/xwalk_content.cc:202: error: undefined reference to 'navigation_interception::InterceptNavigationDelegate::InterceptNavigationDelegate(_JNIEnv*, _jobject*)'
../../xwalk/runtime/browser/android/xwalk_content.cc:202: error: undefined reference to 'navigation_interception::InterceptNavigationDelegate::Associate(content::WebContents*, std::__1::unique_ptr<navigation_interception::InterceptNavigationDelegate, std::__1::default_delete<navigation_interception::InterceptNavigationDelegate> >)'
../../xwalk/runtime/browser/android/xwalk_web_contents_delegate.cc:43: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::~WebContentsDelegateAndroid()'
../../xwalk/runtime/browser/android/xwalk_web_contents_delegate.cc:40: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::WebContentsDelegateAndroid(_JNIEnv*, _jobject*)'
../../xwalk/runtime/browser/android/xwalk_web_contents_delegate.cc:56: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::GetJavaDelegate(_JNIEnv*) const'
../../xwalk/runtime/browser/android/xwalk_web_contents_delegate.cc:80: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::GetJavaDelegate(_JNIEnv*) const'
../../xwalk/runtime/browser/android/xwalk_web_contents_delegate.cc:89: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::GetJavaDelegate(_JNIEnv*) const'
../../xwalk/runtime/browser/android/xwalk_web_contents_delegate.cc:100: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::GetJavaDelegate(_JNIEnv*) const'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::OpenURLFromTab(content::WebContents*, content::OpenURLParams const&)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::NavigationStateChanged(content::WebContents*, content::InvalidateTypes)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::VisibleSSLStateChanged(content::WebContents const*)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::LoadingStateChanged(content::WebContents*, bool)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::LoadProgressChanged(content::WebContents*, double)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::MoveContents(content::WebContents*, gfx::Rect const&)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::UpdateTargetURL(content::WebContents*, GURL const&)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::TakeFocus(content::WebContents*, bool)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::ShowRepostFormWarningDialog(content::WebContents*)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::OnGoToEntryOffset(int)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::WebContentsCreated(content::WebContents*, int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, GURL const&, content::WebContents*)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::OpenColorChooser(content::WebContents*, unsigned int, std::__1::vector<content::ColorSuggestion, std::__1::allocator<content::ColorSuggestion> > const&)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::ShowValidationMessage(content::WebContents*, gfx::Rect const&, std::__1::basic_string<unsigned short, base::string16_char_traits, std::__1::allocator<unsigned short> > const&, std::__1::basic_string<unsigned short, base::string16_char_traits, std::__1::allocator<unsigned short> > const&)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::HideValidationMessage(content::WebContents*)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::MoveValidationMessage(content::WebContents*, gfx::Rect const&)'
obj/xwalk/xwalk_runtime/xwalk_web_contents_delegate.o:xwalk_web_contents_delegate.cc:vtable for xwalk::XWalkWebContentsDelegate: error: undefined reference to 'web_contents_delegate_android::WebContentsDelegateAndroid::RequestAppBannerFromDevTools(content::WebContents*)'
../../xwalk/runtime/browser/runtime_resource_dispatcher_host_delegate_android.cc:312: error: undefined reference to 'auto_login_parser::HeaderData::HeaderData()'
../../xwalk/runtime/browser/runtime_resource_dispatcher_host_delegate_android.cc:313: error: undefined reference to 'auto_login_parser::ParserHeaderInResponse(net::URLRequest*, auto_login_parser::RealmRestriction, auto_login_parser::HeaderData*)'
../../xwalk/runtime/browser/runtime_resource_dispatcher_host_delegate_android.cc:322: error: undefined reference to 'auto_login_parser::HeaderData::~HeaderData()'
../../xwalk/runtime/browser/xwalk_content_browser_client.cc:443: error: undefined reference to 'navigation_interception::InterceptNavigationDelegate::CreateThrottleFor(content::NavigationHandle*)'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

The build environment is:
Ubuntu 16.04 64-bit with latest updates
Deps are installed by successfully running ./build/install-build-deps-android.sh

Any ideas on this? Thank you.

[rakuco]

$ ninja -C out/Default xwalk

Oops, this is a documentation issue, and crosswalk-project/crosswalk-website#354 should fix it. Basically, you need to use one of the target names listed below that part in the build docs.

[arshcaria]

Thank you @rakuco
It worked after specifying the three build targets.