Building necessitas alpha4

[Ray Donnelly]

Hi Peter,

Which NDK are you using? Ours or Google's? Google's won't work for 2
reasons, their libgnustl_static.a has it's symbols invisible and also
their linker has a bug in it to do with a specific relocation type.

Also are you using the unstable branch of the Qt sources?

Only libQtCore4.so gets linked to libgnustl_static.a:

from qt-src\src\corelib\corelib.pro

android: {
    #add whole gnu_stl library to QtCore
    LIBS_PRIVATE += -Wl,--whole-archive
$$ANDROID_SOURCES_CXX_STL_LIBDIR/libgnustl_static.a
-Wl,--no-whole-archive
}

On android libstdc++ is just a few small support functions for C++.

On Wed, Aug 29, 2012 at 4:14 PM, Peter Saunderson <peteasa at gmail.com> wrote:
> Hi,
>
> I am building from source and plan to run on an android 4.1.1.  I am using
> Ubuntu 64bit machine for the build and am using android-ndk-r8b.
>
> I find errors such as
> obj/release/JSBase.o:(.ARM.extab.text.JSReportExtraMemoryCost+0x0):
> undefined reference to `__gxx_personality_v0'
>
> that are fixed by adding to the .pro file
> QMAKE_LIBS += -lgnustl_shared
>
> because in android the shared library file is named "libgnustl_shared.so"
> instead of "libstdc++.so" as on other platforms (see
> CPLUSPLUS-SUPPORT.html).
>
> I tried to make this change in mkspecs/android-g++/qmake.conf but had other
> errors.  Is there a construct that I can use in the .pro files such as
> neon:*-g++* { ... }
> that will make this change for just android builds of Qt? Is there a better
> way to fix this linker problem in necessitas?
>
> Thanks
>
> Peter.
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