Estou tentando criar boost_1.60.0 (como biblioteca compartilhada) para android com suporte a c ++ 11. Estou usando o mais recente ndk (atualmente android-ndk-r10e). O host da compilação é o Windows-10.

Isto é para um projeto não-opensource. Pelo que entendi, não posso usar o gnustl_shared e preciso usar o c ++ _ shared como o tempo de execução do android c ++.

meu project-config.jam fica assim:

androidNDKRoot = c:/android-ndk-r10e ;
 using gcc : android :
     $(androidNDKRoot)/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-g++ :
      <root>$(androidNDKRoot)/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/
      <compileflags>-MMD
      <compileflags>-MP
      <compileflags>-MF
      <compileflags>-fpic 
      <compileflags>-ffunction-sections 
      <compileflags>-funwind-tables 
      <compileflags>-fstack-protector 
      <compileflags>-no-canonical-prefixes 
      <compileflags>-march=armv5te 
      <compileflags>-mtune=xscale 
      <compileflags>-msoft-float 
      <compileflags>-fno-rtti 
      <compileflags>-mthumb 
      <compileflags>-Os 
      <compileflags>-g 
      <compileflags>-DNDEBUG 
      <compileflags>-fomit-frame-pointer 
      <compileflags>-fno-strict-aliasing 
      <compileflags>-finline-limit=64
      <compileflags>-IC:/android-ndk-r10e/sources/cxx-stl/llvm-libc++/libcxx/include
      <compileflags>-IC:/android-ndk-r10e/sources/cxx-stl/llvm-libc++/../llvm-libc++abi/libcxxabi/include
      <compileflags>-IC:/android-ndk-r10e/sources/cxx-stl/llvm-libc++/../../android/support/include
      <compileflags>-IC:/android-ndk-r10e/platforms/android-9/arch-arm/usr/include
      <compileflags>-Wa,--noexecstack 
      <compileflags>-Wformat 
      <compileflags>-Werror=format-security
      <compileflags>-DUNIX 
      <compileflags>-DANDROID 
      <compileflags>-Wl,--no-undefined
      <cxxflags>-fexceptions 
      <linkflags>-lc++_shared
      <archiver>$(androidNDKRoot)/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-ar
      <ranlib>$(androidNDKRoot)/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-ranlib
        ;        

o comando build é:

b2 --toolset=gcc-android cxxflags="-std=c++11 " --prefix=..\boost_android_arm --builddir=./boost_android_arm/builddir target-os=linux --with-filesystem define=BOOST_FILESYSTEM_VERSION=3 link=shared runtime-link=shared threading=multi 

Para determinar os parâmetros no projeto-config.jam, construí uma biblioteca compartilhada de amostra usando o ndk-build, recebo suas mensagens de depuração e extraí os comandos de compilação e link que ele usa.

compilar:

C:\android-ndk-r10e\toolchains\arm-linux-androideabi-4.8\prebuilt\windows-x86_64\bin\arm-linux-androideabi-g++.exe,C:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-g++ -MMD -MP -MF ./obj/local/armeabi/objs/someLib/./Unity1.o.d -fpic -ffunction-sections -funwind-tables -fstack-protector -no-canonical-prefixes -march=armv5te -mtune=xscale -msoft-float -fno-exceptions -fno-rtti -mthumb -Os -g -DNDEBUG -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -Ijni/../../library/../../../../ -Ijni/../../library/../../../../src/ -IC:/android-ndk-r10e/sources/cxx-stl/llvm-libc++/libcxx/include -IC:/android-ndk-r10e/sources/cxx-stl/llvm-libc++/../llvm-libc++abi/libcxxabi/include -IC:/android-ndk-r10e/sources/cxx-stl/llvm-libc++/../../android/support/include -Ijni/../../library -DANDROID -DHAVE_CONFIG_H -DSESTEK_ANDROID_XERCES_HACK -Wa,--noexecstack -Wformat -Werror=format-security -std=c++11 -fno-strict-aliasing -frtti -fexceptions -DUNIX -DANDROID -IC:/android-ndk-r10e/platforms/android-9/arch-arm/usr/include -c jni/../../library/./Unity1.cpp -o ./obj/local/armeabi/objs/someLib/./Unity1.o,...)

ligação:

C:\android-ndk-r10e\toolchains\arm-linux-androideabi-4.8\prebuilt\windows-x86_64\bin\arm-linux-androideabi-g++.exe,C:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-g++ -Wl,-soname,libsomeLib.so -shared --sysroot=C:/android-ndk-r10e/platforms/android-9/arch-arm ./obj/local/armeabi/objs/someLib/./Unity1.o -lgcc ./obj/local/armeabi/libc++_shared.so -no-canonical-prefixes -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -mthumb -lc -lm -o ./obj/local/armeabi/libsomeLib.so,...)

Por uma questão de brevidade, construí apenas um sistema de arquivos para este teste, mas no final planejo criar pelo menos bibliotecas de threads, sistemas de arquivos, date_time, asio e log.
Finalmente, o erro que recebo é o seguinte.

...patience...
...found 660 targets...
...updating 13 targets...
gcc.compile.c++ bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\error_code.o
gcc.link.dll bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\libboost_system-gcc-mt-1_60.so.1.60.0
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot open crtbegin_so.o: No such file or directory
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -lrt
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot open crtend_so.o: No such file or directory
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -lc++_shared
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -lstdc++
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -lm
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -lc
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -ldl
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -lc
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\error_code.o: requires unsupported dynamic reloc R_ARM_REL32; recompile with -fPIC
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\error_code.o: requires unsupported dynamic reloc R_ARM_REL32; recompile with -fPIC
c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld.exe: error: bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\error_code.o: requires unsupported dynamic reloc R_ARM_REL32; recompile with -fPIC
    ./boost/system/detail/error_code.ipp:458: error: undefined reference to '__dso_handle'
    ./boost/system/detail/error_code.ipp:464: error: undefined reference to '__dso_handle'
    ./boost/system/detail/error_code.ipp:158: error: undefined reference to '__dso_handle'
collect2.exe: error: ld returned 1 exit status
    "c:/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-g++"    -o "bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\libboost_system-gcc-mt-1_60.so.1.60.0"  -shared -Wl,--start-group "bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\error_code.o"  -Wl,-Bstatic  -Wl,-Bdynamic -lrt -Wl,--end-group -lc++_shared -pthread
...failed gcc.link.dll bin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi\libboost_system-gcc-mt-1_60.so.1.60.0...
...skipped <pstage\lib>libboost_system-gcc-mt-1_60.so.1.60.0 for lack of <pbin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi>libboost_system-gcc-mt-1_60.so.1.60.0...
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\codecvt_error_category.o
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\operations.o
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\path.o
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\path_traits.o
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\portability.o
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\unique_path.o
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\utf8_codecvt_facet.o
gcc.compile.c++ bin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi\windows_file_codecvt.o
...skipped <pbin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi>libboost_filesystem-gcc-mt-1_60.so.1.60.0 for lack of <pbin.v2\libs\system\build\gcc-android\release\target-os-linux\threading-multi>libboost_system-gcc-mt-1_60.so.1.60.0...
...skipped <pstage\lib>libboost_filesystem-gcc-mt-1_60.so.1.60.0 for lack of <pbin.v2\libs\filesystem\build\gcc-android\release\target-os-linux\threading-multi>libboost_filesystem-gcc-mt-1_60.so.1.60.0...
...failed updating 1 target...
...skipped 3 targets...
...updated 9 targets...

O erro informa que ele precisa do diretório para encontrar as bibliotecas necessárias, mas o problema é que, no android ndk, existem vários arquivos com os nomes rt e crtbegin_so.o e outros. Acho que preciso fazer com que o compilador determine o próprio diretório correto.

Com tudo dito, o que eu realmente preciso é criar bibliotecas compartilhadas para o Android com suporte a c ++ 11. Portanto, posso aceitar sua ajuda, apontando-me na direção certa usando os parâmetros de compilação acima ou fornecendo-me uma amostra de trabalho para que eu possa resolver os detalhes pessoalmente.

Oh, mais uma coisa: se eu usarlink=static ao invés delink=shared no comando build, a build é bem-sucedida. Mas eu não tentei as bibliotecas estáticas produzidas.