Libreoffice build error[for android]

[Michael Weghorn]

Hi,

On 03/03/2022 16.08, di liu wrote:
> the build environment is linux(centos 7) which installed in vmware (my 
> host system is macOS) this is my autogen.input content 
> --with-distro=LibreOfficeAndroid 
> --with-android-sdk=/home/disco/Documents/dev_env/android_sdk 
> --with-android-ndk=/home/disco/Documents/dev_env/android_sdk/ndk/20.1.5948944 
> --with-ant-home=/home/disco/Documents/dev_env/apache-ant-1.10.12 

I tried a build with an equivalent autogen.input on Debian testing:

     --with-distro=LibreOfficeAndroid
     --with-android-sdk=/home/michi/Android/Sdk
     --with-android-ndk=/home/michi/Android/Sdk/ndk/20.1.5948944
     --with-external-tar=/home/michi/development/libreoffice-external

which worked fine with master (as of commit 
0a774bae7d402a6880760b1226a6741604e23f5a).


> everything is ok when execute: ./autogen.sh But when I execute: make the 
> error is happened:
> 
> [...]
>     Linking
>     /home/disco/Documents/res/libreoffice/android/obj/local/armeabi-v7a/liblo-native-code.so
>     /home/disco/Documents/res/libreoffice/instdir/program/libuno_cppuhelpergcc3.a(shlib.o):shlib.cxx:function
>     cppuhelper::detail::loadSharedLibComponentFactory(rtl::OUString
>     const&, rtl::OUString const&, rtl::OUString const&, rtl::OUString
>     const&, rtl::OUString const&,
>     com::sun::star::uno::Reference<com::sun::star::lang::XMultiServiceFactory>
>     const&, std::__ndk1::function<com::sun::star::uno::XInterface*
>     (com::sun::star::uno::XComponentContext*,
>     com::sun::star::uno::Sequence<com::sun::star::uno::Any> const&)>*,
>     com::sun::star::uno::Reference<com::sun::star::uno::XInterface>*):
>     error: undefined reference to 'lo_get_constructor_map'
>     /home/disco/Documents/res/libreoffice/instdir/program/libuno_cppuhelpergcc3.a(shlib.o):shlib.cxx:function
>     cppuhelper::detail::loadSharedLibComponentFactory(rtl::OUString
>     const&, rtl::OUString const&, rtl::OUString const&, rtl::OUString
>     const&, rtl::OUString const&,
>     com::sun::star::uno::Reference<com::sun::star::lang::XMultiServiceFactory>
>     const&, std::__ndk1::function<com::sun::star::uno::XInterface*
>     (com::sun::star::uno::XComponentContext*,
>     com::sun::star::uno::Sequence<com::sun::star::uno::Any> const&)>*,
>     com::sun::star::uno::Reference<com::sun::star::uno::XInterface>*):
>     error: undefined reference to 'lo_get_factory_map'
>     [...] >
>     Could you give me some suggestions

If you have current git master without any local changes and 'make 
distclean' and trying again doesn't work, you could try using a 
different version of the Android NDK, or use LLD as linker instead of 
ld.gold by applying the demo patch at 
https://gerrit.libreoffice.org/c/core/+/130947 and switching to a newer 
NDK; a build here worked with that Gerrit change in place and an 
autogen.input containing this:

     --with-distro=LibreOfficeAndroid
     --with-android-ndk=/home/michi/Android/Sdk/ndk/22.1.7171670/
     --with-android-sdk=/home/michi/Android/Sdk
     --with-external-tar=/home/michi/development/libreoffice-external

(At least my experience in the past was that it was a bit tricky to find 
a combination of Android NDK and linker that would work depending on 
architecture and whether this was a release or debug build. But the 
problems I encountered back then were more "fundamental" than the 
"undefined reference" issue you're encountering. Maybe all of the issues 
I had two years ago or so are fixed in newer versions of the toolchain, 
but so far I just stayed with what was working back then...)