nanomsg交叉编译

编译流程

进入源码根目录，分别执行以下命令：

mkdir build
cd build
cmake .. -DCMAKE_TOOLCHAIN_FILE=../mtk_setup.cmake -DCMAKE_INSTALL_PREFIX=../__install
cmake --build .
cmake --build . --target install

指定交叉编译工具

mtk_setup.cmake 文件内容如下：

# set the tagrt system
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

# set the toolchain path

# 指定交叉编译工具
set(TOOL_CHAIN_DIR /home/openwrt-toolchain-mediatek-mt7622_gcc-11.3.0_musl/toolchain-aarch64_cortex-a53_gcc-11.3.0_musl/)

# set the toolchain lib & include files
set(TOOL_CHAIN_INCLUDE ${TOOL_CHAIN_DIR}/include)
set(TOOL_CHAIN_LIB ${TOOL_CHAIN_DIR}/lib)


# set the compiler
set(CMAKE_C_COMPILER "${TOOL_CHAIN_DIR}/bin/aarch64-openwrt-linux-gcc")
# set(CMAKE_CXX_COMPILER "${TOOL_CHAIN_DIR}/bin/aarch64-openwrt-linux-g++")

# set the cmake find root path
set(CMAKE_FIND_ROOT_PATH ${TOOL_CHAIN_DIR})

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

# 只在指定目录下查找库文件,只在指定目录下查找头文件,只在指定目录下查找依赖包
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

set(CMAKE_INCLUDE_PATH ${TOOL_CHAIN_INCLUDE})
set(CMAKE_LIBRARY_PATH ${TOOL_CHAIN_LIB})