cmake 交叉编译

准备工作:交叉编译工具链安装

确保交叉编译工具链已经正常安装
验证.比如: arm-none-eabi-gcc -v

 arm-none-eabi-gcc -v
Using built-in specs.
COLLECT_GCC=arm-none-eabi-gcc
COLLECT_LTO_WRAPPER=/home/jlh/gcc-arm-none-eabi-7-2018-q2-update/bin/../lib/gcc/arm-none-eabi/7.3.1/lto-wrapper
Target: arm-none-eabi
Configured with: /tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/src/gcc/configure --target=arm-none-eabi --prefix=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/install-native --libexecdir=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/install-native/lib --infodir=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/install-native/share/doc/gcc-arm-none-eabi/info --mandir=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/install-native/share/doc/gcc-arm-none-eabi/man --htmldir=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/install-native/share/doc/gcc-arm-none-eabi/html --pdfdir=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/install-native/share/doc/gcc-arm-none-eabi/pdf --enable-languages=c,c++ --enable-plugins --disable-decimal-float --disable-libffi --disable-libgomp --disable-libmudflap --disable-libquadmath --disable-libssp --disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads --disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes --with-python-dir=share/gcc-arm-none-eabi --with-sysroot=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/install-native/arm-none-eabi --build=x86_64-linux-gnu --host=x86_64-linux-gnu --with-gmp=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/build-native/host-libs/usr --with-mpfr=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/build-native/host-libs/usr --with-mpc=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/build-native/host-libs/usr --with-isl=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/build-native/host-libs/usr --with-libelf=/tmp/jenkins/jenkins-GCC-7-build_toolchain_docker-775_20180622_1529687456/build-native/host-libs/usr --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-pkgversion='GNU Tools for Arm Embedded Processors 7-2018-q2-update' --with-multilib-list=rmprofile
Thread model: single
gcc version 7.3.1 20180622 (release) [ARM/embedded-7-branch revision 261907] (GNU Tools for Arm Embedded Processors 7-2018-q2-update) 

怎么安装

将交叉编译工具链/bin -------目录------>添加到PATH
export PATH=$PATH:/home/jlh/gcc-arm-none-eabi-7-2018-q2-update/bin
source ~/.bashrc
安装后,验证: arm-none-eabi-gcc -v

1 实验:直接用交叉编译工具链编译编译

自己准备一个test.c

//test.c
#include

int main()
{
    printf("123\n");
    return 0;
}

arm-none-eabi-gcc -specs=nosys.specs test.c -o m

是可以成功编译过的

2 cmake 编写

CMakeLists.txt 内容如下

cmake_minimum_required(VERSION 3.10)
project(YourProject C)

set(CMAKE_C_STANDARD 99)

# 设置交叉编译器
set(CMAKE_C_COMPILER arm-none-eabi-gcc)
set(CMAKE_CXX_COMPILER arm-none-eabi-g++)

# 添加 nosys.specs
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -specs=nosys.specs")

# 添加源文件
set(SOURCES
    test.c
)


# 添加可执行文件
add_executable(out ${SOURCES})

在CMakeLists.txt同级目录下
cmake .
make