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Ubuntu 使用 ming-w64 交叉编译 Windows 可执行文件

最近需要对AOSP上的aapt和aapt2进行自定义,但是AOSP的整个源码树过大,完整释放后约200G,不大适合整个拉下来编译,因此对构建环境进行精简,只拉取aapt和aapt2的关键依赖项目,使用cmake进行编译,整个移植过程很顺利,并且成功的编译出了mac和linux的可执行文件和对应的动态库,包括x86和x86_64的文件,但是在编译windows的版本的时候,遇到了一点小问题,就是AOSP上的依赖项目,存在软链接,但是windows系统是不支持软链接的,因此不能在windows上进行编译。

对于windows不支持软链接,其实有两种处理方式:

  1. 手动拷贝对应软链接文件到对应的目录,显然这是很不明智的选择,因为文件太大了
  2. 不在windows上进行编译,选择linux下交叉编译windows可执行文件。我这里选择的就是这一种。

安装依赖

由于要进行交叉编译,因此需要安装交叉编译工具链mingw-w64

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sudo apt-get install mingw-w64

安装完成后,mingw-gcc和mingw-g++默认使用的线程模型是win32的,但是我们需要使用posix的线程模型,因此分别执行以下命令,然后将工具链指向带-posix后缀的工具链

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sudo update-alternatives --config x86_64-w64-mingw32-gcc
sudo update-alternatives --config x86_64-w64-mingw32-g++
sudo update-alternatives --config x86_64-w64-mingw32-gfortran
sudo update-alternatives --config x86_64-w64-mingw32-gnat
sudo update-alternatives --config i686-w64-mingw32-gcc
sudo update-alternatives --config i686-w64-mingw32-g++
sudo update-alternatives --config i686-w64-mingw32-gfortran
sudo update-alternatives --config i686-w64-mingw32-gnat

编写cmake交叉编译脚本

参考之前写的一篇文章Mac生成Linux交叉编译工具链,编写cmake交叉编译脚本,创建windows.toolchain.cmake文件,里面的内容为:

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# 安装 mingw-w64
# sudo apt-get install mingw-w64
# windows 64位操作系统
# -DCMAKE_TOOLCHAIN_FILE=windows.toolchain.cmake
# windows 32位操作系统
# -DCMAKE_TOOLCHAIN_FILE=windows.toolchain.cmake -DUSE_32BITS=1
set(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_SYSTEM_VERSION 1)
set(CMAKE_SYSTEM_PROCESSOR x86_64)
set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
set(CMAKE_AR x86_64-w64-mingw32-ar CACHE FILEPATH "Archiver")
set(CMAKE_RANLIB x86_64-w64-mingw32-ranlib CACHE FILEPATH "Ranlib")
set(CMAKE_ASM_COMPILER x86_64-w64-mingw32-as)
set(CMAKE_LINKER x86_64-w64-mingw32-ld)
set(CMAKE_NM x86_64-w64-mingw32-nm)
set(CMAKE_OBJCOPY x86_64-w64-mingw32-objcopy)
set(CMAKE_OBJDUMP x86_64-w64-mingw32-objdump)
set(CMAKE_STRIP x86_64-w64-mingw32-strip)
message(STATUS "CMAKE_C_COMPILER = ${CMAKE_C_COMPILER}")
message(STATUS "CMAKE_CXX_COMPILER = ${CMAKE_CXX_COMPILER}")
message(STATUS "CMAKE_AR = ${CMAKE_AR}")
message(STATUS "CMAKE_RANLIB = ${CMAKE_RANLIB}")
message(STATUS "CMAKE_ASM_COMPILER = ${CMAKE_ASM_COMPILER}")
message(STATUS "CMAKE_LINKER = ${CMAKE_LINKER}")
message(STATUS "CMAKE_NM = ${CMAKE_NM}")
message(STATUS "CMAKE_OBJCOPY = ${CMAKE_OBJCOPY}")
message(STATUS "CMAKE_OBJDUMP = ${CMAKE_OBJDUMP}")
message(STATUS "CMAKE_STRIP = ${CMAKE_STRIP}")
# Set or retrieve the cached flags.
# This is necessary in case the user sets/changes flags in subsequent
# configures. If we included the flags in here, they would get
# overwritten.
set(CMAKE_C_FLAGS ""
CACHE STRING "Flags used by the compiler during all build types.")
set(CMAKE_CXX_FLAGS ""
CACHE STRING "Flags used by the compiler during all build types.")
set(CMAKE_ASM_FLAGS ""
CACHE STRING "Flags used by the compiler during all build types.")
set(CMAKE_C_FLAGS_DEBUG ""
CACHE STRING "Flags used by the compiler during debug builds.")
set(CMAKE_CXX_FLAGS_DEBUG ""
CACHE STRING "Flags used by the compiler during debug builds.")
set(CMAKE_ASM_FLAGS_DEBUG ""
CACHE STRING "Flags used by the compiler during debug builds.")
set(CMAKE_C_FLAGS_RELEASE ""
CACHE STRING "Flags used by the compiler during release builds.")
set(CMAKE_CXX_FLAGS_RELEASE ""
CACHE STRING "Flags used by the compiler during release builds.")
set(CMAKE_ASM_FLAGS_RELEASE ""
CACHE STRING "Flags used by the compiler during release builds.")
set(CMAKE_MODULE_LINKER_FLAGS ""
CACHE STRING "Flags used by the linker during the creation of modules.")
set(CMAKE_SHARED_LINKER_FLAGS ""
CACHE STRING "Flags used by the linker during the creation of dll's.")
set(CMAKE_EXE_LINKER_FLAGS ""
CACHE STRING "Flags used by the linker.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS}")
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
set(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG}")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
set(CMAKE_ASM_FLAGS_RELEASE "${CMAKE_ASM_FLAGS_RELEASE}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLYONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
#make VERVOSE=1 to output the log

优化cmake交叉编译脚本支持32位可执行文件

上面的只能编译出64位的文件,要想编译出32位的文件,需要使用i686开头的工具链,因此,可以简单的通过参数进行控制是使用64位还是32位的,优化后的cmake脚本如下

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# 安装 mingw-w64
# sudo apt-get install mingw-w64
# windows 64位操作系统
# -DCMAKE_TOOLCHAIN_FILE=windows.toolchain.cmake
# windows 32位操作系统
# -DCMAKE_TOOLCHAIN_FILE=windows.toolchain.cmake -DUSE_32BITS=1
set(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_SYSTEM_VERSION 1)
if(USE_32BITS)
message(STATUS "using 32bits")
set(CMAKE_SYSTEM_PROCESSOR x86)
else()
set(CMAKE_SYSTEM_PROCESSOR x86_64)
endif(USE_32BITS)
if(USE_32BITS)
set(CMAKE_C_COMPILER i686-w64-mingw32-gcc)
set(CMAKE_CXX_COMPILER i686-w64-mingw32-g++)
SET(CMAKE_RC_COMPILER i686-w64-mingw32-windres)
set(CMAKE_AR i686-w64-mingw32-ar CACHE FILEPATH "Archiver")
set(CMAKE_RANLIB i686-w64-mingw32-ranlib CACHE FILEPATH "Ranlib")
set(CMAKE_ASM_COMPILER i686-w64-mingw32-as)
set(CMAKE_LINKER i686-w64-mingw32-ld)
set(CMAKE_NM i686-w64-mingw32-nm)
set(CMAKE_OBJCOPY i686-w64-mingw32-objcopy)
set(CMAKE_OBJDUMP i686-w64-mingw32-objdump)
set(CMAKE_STRIP i686-w64-mingw32-strip)
else()
set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
set(CMAKE_AR x86_64-w64-mingw32-ar CACHE FILEPATH "Archiver")
set(CMAKE_RANLIB x86_64-w64-mingw32-ranlib CACHE FILEPATH "Ranlib")
set(CMAKE_ASM_COMPILER x86_64-w64-mingw32-as)
set(CMAKE_LINKER x86_64-w64-mingw32-ld)
set(CMAKE_NM x86_64-w64-mingw32-nm)
set(CMAKE_OBJCOPY x86_64-w64-mingw32-objcopy)
set(CMAKE_OBJDUMP x86_64-w64-mingw32-objdump)
set(CMAKE_STRIP x86_64-w64-mingw32-strip)
endif(USE_32BITS)
message(STATUS "CMAKE_C_COMPILER = ${CMAKE_C_COMPILER}")
message(STATUS "CMAKE_CXX_COMPILER = ${CMAKE_CXX_COMPILER}")
message(STATUS "CMAKE_AR = ${CMAKE_AR}")
message(STATUS "CMAKE_RANLIB = ${CMAKE_RANLIB}")
message(STATUS "CMAKE_ASM_COMPILER = ${CMAKE_ASM_COMPILER}")
message(STATUS "CMAKE_LINKER = ${CMAKE_LINKER}")
message(STATUS "CMAKE_NM = ${CMAKE_NM}")
message(STATUS "CMAKE_OBJCOPY = ${CMAKE_OBJCOPY}")
message(STATUS "CMAKE_OBJDUMP = ${CMAKE_OBJDUMP}")
message(STATUS "CMAKE_STRIP = ${CMAKE_STRIP}")
# Set or retrieve the cached flags.
# This is necessary in case the user sets/changes flags in subsequent
# configures. If we included the flags in here, they would get
# overwritten.
set(CMAKE_C_FLAGS ""
CACHE STRING "Flags used by the compiler during all build types.")
set(CMAKE_CXX_FLAGS ""
CACHE STRING "Flags used by the compiler during all build types.")
set(CMAKE_ASM_FLAGS ""
CACHE STRING "Flags used by the compiler during all build types.")
set(CMAKE_C_FLAGS_DEBUG ""
CACHE STRING "Flags used by the compiler during debug builds.")
set(CMAKE_CXX_FLAGS_DEBUG ""
CACHE STRING "Flags used by the compiler during debug builds.")
set(CMAKE_ASM_FLAGS_DEBUG ""
CACHE STRING "Flags used by the compiler during debug builds.")
set(CMAKE_C_FLAGS_RELEASE ""
CACHE STRING "Flags used by the compiler during release builds.")
set(CMAKE_CXX_FLAGS_RELEASE ""
CACHE STRING "Flags used by the compiler during release builds.")
set(CMAKE_ASM_FLAGS_RELEASE ""
CACHE STRING "Flags used by the compiler during release builds.")
set(CMAKE_MODULE_LINKER_FLAGS ""
CACHE STRING "Flags used by the linker during the creation of modules.")
set(CMAKE_SHARED_LINKER_FLAGS ""
CACHE STRING "Flags used by the linker during the creation of dll's.")
set(CMAKE_EXE_LINKER_FLAGS ""
CACHE STRING "Flags used by the linker.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS}")
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
set(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG}")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
set(CMAKE_ASM_FLAGS_RELEASE "${CMAKE_ASM_FLAGS_RELEASE}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
if(USE_32BITS)
set(CMAKE_FIND_ROOT_PATH /usr/i686-w64-mingw32)
else()
set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
endif(USE_32BITS)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLYONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
#make VERVOSE=1 to output the log

生成cmake构建文件

如果生成64的构建文件,则使用

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cmake -H"./" -B"./build-cmake-windows" -DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_TOOLCHAIN_FILE=windows.toolchain.cmake

但是如果需要生产32位的构建文件,则需要传递USE_32BITS=1参数,如下

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cmake -H"./" -B"./build-cmake-windows-x86" -DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_TOOLCHAIN_FILE=windows.toolchain.cmake -DUSE_32BITS=1

mac下编译

mac下可使用brew install mingw-w64安装mingw-w64,但是安装出来的mingw-w64线程模型是win32的,而我们需要使用posix线程模型,因此如果要想在mac下进行编译,则需要自己编译mingw-w64,启用posix线程模型,有兴趣可以自行研究。

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