CMake交叉编译#

CMake官网参考链接

1.创建测试文件hello.c#

#include<stdio.h>
int main()
{
    printf("Hello ARM CMake!/n");
    return 0;
}

2.创建CMakeList.txt文件#

cmake_minimum_required(VERSION 3.0.0)
project(hello_cmake VERSION 0.1.0)

add_executable(hello_cmake hello.c)

3.创建toolchain.cmake文件#

该文件指明了交叉编译器信息

### toolchain.cmake ###
# this is required
SET(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

# specify the cross compiler
SET(CMAKE_C_COMPILER   /home/fhc/linux_driver/gcc-3.4.5-glibc-2.3.6/bin/arm-linux-gcc)
SET(CMAKE_CXX_COMPILER /home/fhc/linux_driver/gcc-3.4.5-glibc-2.3.6/bin/arm-linux-g++)

# where is the target environment
SET(CMAKE_FIND_ROOT_PATH  /home/fhc/linux_driver/gcc-3.4.5-glibc-2.3.6)

# search for programs in the build host directories (not necessary)
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

# for libraries and headers in the target directories
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

4.执行CMake指令生成Makefile#

CMake有两种方式可以生成Makefile，下面分别介绍：

4.1 使用cmake-gui生成Makefile#

4.2 在命令行中生成Makefile#

cmake -DCMAKE_TOOLCHAIN_FILE=../toolchain/toolchain.cmake ..

5. 编译工程#

mkdir build && cd build

cmake ..

make

6. 设置可执行文件的安装路径#

编辑CMakeLists.txt文件：

cmake_minimum_required(VERSION 3.0.0)
project(hello_cmake VERSION 0.1.0)

set(CMAKE_BUILD_TYPE DEBUG)
set(CMAKE_INSTALL_PREFIX /home/fhc/myWorkspace/cmake_project/cmake_cross_complie_base/build)

add_executable(hello_cmake hello.c)

# DESTINATION指的就是CMAKE_INSTALL_PREFIX
# 该命令的作用是将编译生成的hello_cmake文件，复制到CMAKE_INSTALL_PREFIX/bin目录下
install(TARGETS hello_cmake RUNTIME DESTINATION bin)