新建文件arm.cmake,內容如下
#指定嵌入式系統的編譯輸出目錄
set(SYSROOT_PATH "/home/suka/out/system")
#指定交叉編譯器路徑
set(TOOLSCHAIN_PATH "/home/suka/toolschain/")
set(TOOLCHAIN_HOST "${TOOLSCHAIN_PATH}usr/bin/arm-linux")
#message("${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE}")
message(STATUS "Using sysroot path: ${SYSROOT_PATH}")
set(TOOLCHAIN_CC "${TOOLCHAIN_HOST}-gcc")
set(TOOLCHAIN_CXX "${TOOLCHAIN_HOST}-g++")
#告訴cmake是進行交叉編譯
set(CMAKE_CROSSCOMPILING TRUE)
# Define name of the target system
set(CMAKE_SYSTEM_NAME "Linux")
# Define the compiler
set(CMAKE_C_COMPILER ${TOOLCHAIN_CC})
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_CXX})
#庫和同頭文件查找的路徑。
set(CMAKE_FIND_ROOT_PATH "${SYSROOT_PATH}" "${CMAKE_PREFIX_PATH}" "${TOOLSCHAIN_PATH}")
# search for programs in the build host directories
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)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
啟動使用cmake -DCMAKE_TOOLCHAIN_FILE=arm.cmake -DCMAKE_INSTALL_PREFIX:FILEPATH=/usr/local