CLIgon cmake 环境变量设置技巧

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CMake options填写-D变量名=变量值
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message(${BUILD_TYPE})
if(BUILD_TYPE STREQUAL arm)
    cmake_minimum_required(VERSION 3.4.1)
    message("is arm set version 3.12")
    set(CMAKE_C_FLAGS "-std=gnu99")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIE")
        message(${CMAKE_C_FLAGS})
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fPIE -pie")

    #set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fPIE -pie")
    # 配置使用 NDK Standalone Toolchain 编译
    set(NDK_STANDALONE_TOOLCHAIN E:/cross-c/ndk_toolchain)
    set(CMAKE_SYSTEM_NAME AndroidARM)
    set(CMAKE_SYSTEM_VERSION 3)

    set(CMAKE_C_COMPILER ${NDK_STANDALONE_TOOLCHAIN}/bin/arm-linux-androideabi-gcc)
    set(CMAKE_CXX_COMPILER ${NDK_STANDALONE_TOOLCHAIN}/bin/arm-linux-androideabi-g++)

    set(CMAKE_FIND_ROOT_PATH ${NDK_STANDALONE_TOOLCHAIN})

    # 使用 NDK 提供的头文件
    #add_definitions("--sysroot=E:/android_source/android-4.1.1_r1/android-4.1.1_r1/prebuilts/ndk/android-ndk-r7/platforms/android-9/arch-arm")
    add_definitions("--sysroot=${NDK_STANDALONE_TOOLCHAIN}/sysroot")

else()
    set(CMAKE_LEGACY_CYGWIN_WIN32 0) # Remove when CMake >= 2.8.4 is required
    set(CMAKE_CXX_STANDARD 11)
    message("window set var")
endif()
project(MyApplication)
###WINDOW
message("start")

message("end")

option(Build_DEBUG "debug or release?" ON)








#set(CMAKE_C_COMPILER ${NDK_STANDALONE_TOOLCHAIN}/bin/arm-linux-androideabi-gcc)

aux_source_directory(src SOURCE_FILES)
add_executable(hello src/hello.c)
#add_executable(hello main.cpp test1.cpp test1.h)