1add_definitions(-DDE_OS="DE_OS_UNIX") 2add_definitions(-DDE_COMPILER="DE_COMPILER_CLANG") 3add_definitions(-DDE_CPU="DE_CPU_ARM") 4set(CMAKE_CROSSCOMPILINGTRUE) 5set(CMAKE_SYSTEM_NAMELinux) 6set(CMAKE_CXX_COMPILER_IDClang) 7SET(CMAKE_SYSTEM_PROCESSORarm) 8add_definitions(-DFE_TONEAREST=0x00000000) 9add_definitions(-DFE_UPWARD=0x00400000) 10add_definitions(-DFE_DOWNWARD=0x00800000) 11add_definitions(-DFE_TOWARDZERO=0x00c00000)#add_definitions(-D_XOPEN_SOURCE=600) 12SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAMNEVER) 13SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARYONLY) 14SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDEONLY) 15SET(CROSS_COMPILATION_ARCHITECTUREarmv7-a) 16set(CMAKE_TOOLCHAIN_PREFIXllvm-) 17set(PROJECT_ROOT/home/hrt/master/source) #{ohos源码的工具链} 18#指定c编译工具（确保工具链所在路径已经添加到了PATH环境变量中）和编译标志，使用clang编译时标志中必须指定--target，否则无法交叉编译。 19set(CMAKE_C_COMPILER${PROJECT_ROOT}/prebuilts/clang/ohos/linux- 20x86_64/llvm/bin/clang) 21mfloat-abi=softfp-mfpu=neon-vfpv4-w") 22#指定c++编译工具（确保工具链所在路径已经添加到了PATH环境变量中）和编译标志，必须指定-- 23target，否则无法交叉编译。 24set(CMAKE_CXX_COMPILER${PROJECT_ROOT}/prebuilts/clang/ohos/linux- 25x86_64/llvm/bin/clang++) 26set(CMAKE_CXX_FLAGS"--target=arm-linux-ohosmusl-D__clang__-march=armv7-a -mfloat-abi=softfp-mfpu=neon-vfpv4-w") 27#指定链接工具和链接标志，必须指定--target和--sysroot，其中OHOS_ROOT_PATH可通过cmake 命令后缀参数来指定。 28set(MY_LINK_FLAGS"--target=arm-linux-ohosmusl-- 29sysroot=${PROJECT_ROOT}/out/rk3568/obj/third_party/musl/") 30set(CMAKE_LINKER${PROJECT_ROOT}/prebuilts/clang/ohos/linux- 31x86_64/llvm/bin/clang) 32set(CMAKE_CXX_LINKER${PROJECT_ROOT}/prebuilts/clang/ohos/linux- 33x86_64/llvm/bin/clang++) 34set(CMAKE_C_LINKER${PROJECT_ROOT}/prebuilts/clang/ohos/linux- 35x86_64/llvm/bin/clang) 36#指定链接库的查找路径。 37set(CMAKE_SYSROOT${PROJECT_ROOT}/out/rk3568/obj/third_party/musl/) 38set(CMAKE_EXE_LINKER_FLAGS"-Wl,--dynamic-linker,/system/bin/ld-musl-arm.so.1")