使用Clang (3.8)和Android NDK r14b构建Boost (1.58)

Question

我试着用clang3.8为android NDK r14b构建boost1.58。我让它和gcc工作得很好，但对于clang就不是这样了。

通过运行以下命令(这是program_options lib上的一个示例)：

"androidNDK/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++" 
-c 
-x c++ 
-std=c++11 
--stdlib=libc++ 
-mthumb 
-Os 
-O2 
-g 
-Wno-unused-local-typedefs 
-O3 
-Wno-inline 
-Wall 
--sysroot=androidNDK/platforms/android-24/arch-arm 
-I"androidNDK/sources/cxx-stl/llvm-libc++/include"
-D_GLIBCXX__PTHREADS 
-D__arm__ 
-D_REENTRANT 
-D__ANDROID__ 
-DANDROID 
-pthread 
-std=c++11 
--stdlib=libc++ 
-mthumb 
-fno-strict-aliasing 
-DBOOST_ALL_NO_LIB=1 
-DBOOST_TEST_NO_MAIN 
-DNDEBUG 
-D_HAS_EXCEPTIONS=0 
-D_LITTLE_ENDIAN 
-I"." 
-o "bin.v2\libs\program_options\build\clang-linux-android\release\link-static\runtime-link-static\target-os-linux\threadapi-pthread\threading-multi\config_file.o" "libs\program_options\src\config_file.cpp"

但是我在signal.h文件中得到了一些错误：

clang++.exe: warning: argument unused during compilation: '-mthumb'
clang++.exe: warning: argument unused during compilation: '-mthumb'
In file included from libs\program_options\src\config_file.cpp:8:
In file included from .\boost/program_options/config.hpp:10:
In file included from .\boost/config.hpp:57:
In file included from .\boost/config/platform/linux.hpp:74:
In file included from .\boost/config/posix_features.hpp:18:
In file included from androidNDK/platforms/android-24/arch-arm/usr/include\unistd.h:34:
In file included from androidNDK/platforms/android-24/arch-arm/usr/include\sys/select.h:35:

androidNDK/platforms/android-24/arch-arm/usr/include\signal.h:86:18: error: expected ';' at

      end of declaration list
    sighandler_t sa_handler;
                 ^
androidNDK/platforms/android-24/arch-arm/usr/include\asm/signal.h:101:22: note: expanded
      from macro 'sa_handler'
#define sa_handler _u._sa_handler
                     ^
In file included from libs\program_options\src\config_file.cpp:8:
In file included from .\boost/program_options/config.hpp:10:
In file included from .\boost/config.hpp:57:
In file included from .\boost/config/platform/linux.hpp:74:
In file included from .\boost/config/posix_features.hpp:18:
In file included from androidNDK/platforms/android-24/arch-arm/usr/include\unistd.h:34:
In file included from androidNDK/platforms/android-24/arch-arm/usr/include\sys/select.h:35:

androidNDK/platforms/android-24/arch-arm/usr/include\signal.h:87:12: error: expected ')'
    void (*sa_sigaction)(int, struct siginfo*, void*);
           ^
androidNDK/platforms/android-24/arch-arm/usr/include\asm/signal.h:102:24: note: expanded
      from macro 'sa_sigaction'
#define sa_sigaction _u._sa_sigaction
                       ^
androidNDK/platforms/android-24/arch-arm/usr/include\signal.h:87:10: note: to match this
      '('
    void (*sa_sigaction)(int, struct siginfo*, void*);
         ^
androidNDK/platforms/android-24/arch-arm/usr/include\signal.h:87:12: error: duplicate
      member '_u'
    void (*sa_sigaction)(int, struct siginfo*, void*);
           ^
androidNDK/platforms/android-24/arch-arm/usr/include\asm/signal.h:102:22: note: expanded
      from macro 'sa_sigaction'
#define sa_sigaction _u._sa_sigaction
                     ^
androidNDK/platforms/android-24/arch-arm/usr/include\signal.h:86:18: note: previous
      declaration is here
    sighandler_t sa_handler;
                 ^
androidNDK/platforms/android-24/arch-arm/usr/include\asm/signal.h:101:20: note: expanded
      from macro 'sa_handler'
#define sa_handler _u._sa_handler
                   ^
3 errors generated.

有没有人已经做过这样的事情，或者看到有什么地方不对劲？

Answer 1

所以它终于对我起作用了。我意识到signal.h上的那些错误是因为我的编译器的目标没有真正定义。我想为arm 32位构建boost，但在“执行配置检查”中是：- 32位:否- 64位:是- arm :是

因此，我将boost文件夹中的user-config.jam更改为：

import os ; 
androidNDKRoot = E:/androidNDK ; # put the relevant path  
using clang : android : 
    $(androidNDKRoot)/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++  : 
    <compileflags>--sysroot=$(androidNDKRoot)/platforms/android-21/arch-arm 
    <compileflags>-I$(androidNDKRoot)/sources/cxx-stl/llvm-libc++/include 
    <compileflags>-I$(androidNDKRoot)/sources/cxx-stl/llvm-libc++abi/include 
    <compileflags>-I$(androidNDKRoot)/sources/android/support/include 
    <compileflags>-g 
    <compileflags>-Os 
    <compileflags>-O2 
    <compileflags>--target=armv7a-none-linux-androideabi 
    ; 

看起来clang没有像和这样的选项，所以我在path变量中添加了它们共同的绝对路径：

set PATH=%PATH%;E:\androidNDK\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64\arm-linux-androideabi\bin\

为了测试一个构建(例如:原子)，我从我的boost文件夹中执行：

b2.exe --user-config=tools\build\src\build\user-config.jam target-os=android toolset=clang-android link=static runtime-link=static variant=debug threading=multi -q -a -j6 --with-atomic