如何将编译选项添加到 CMake FetchContent 依赖项?
How to add compile options to a CMake FetchContent-dependency?
我有一个 C/C++ 项目,我想在其中使用 CppUTest。
所以我包括了 CppUTest 的依赖:
include(FetchContent)
FetchContent_Declare(
CppUTest
GIT_REPOSITORY https://github.com/cpputest/cpputest.git
GIT_TAG latest-passing-build
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
)
set(TESTS OFF CACHE BOOL "Switch off CppUTest Test build")
FetchContent_MakeAvailable(CppUTest)
这很好用。
在我的(汽车)项目中,我使用 C++20 标准,我需要启用 all/most 警告。但是当我这样做时,CppUTest 会给我带来很多警告。因此,我想使用与项目代码不同的编译器选项来编译 CppUTest。
如何在 CMake 中配置它?
我在谷歌上搜索了很多,但没有找到任何有用的东西。
谢谢,
斯特凡
PS:我的简化 CMake 文件是:
cmake_minimum_required(VERSION 3.5)
project(projectName LANGUAGES CXX C)
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
MESSAGE("Setting Clang flags:")
SET(COMPILE_FLAGS_WARNINGS "-Weverything")
SET(COMPILE_FLAGS_DEBUG "-Og")
SET(COMPILE_FLAGS_RELEASE "-O2")
SET(COMPILE_FLAGS_COVERAGE "--coverage")
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
#more options here
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
#more options here
endif()
MESSAGE("Debug: ${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS} ${COMPILE_FLAGS_DEBUG}")
MESSAGE("Release: ${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS} ${COMPILE_FLAGS_RELEASE}")
MESSAGE("Coverage: ${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS} ${COMPILE_FLAGS_DEBUG} ${COMPILE_FLAGS_COVERAGE}")
### Dependencies:
include(FetchContent)
FetchContent_Declare(
CppUTest
GIT_REPOSITORY https://github.com/cpputest/cpputest.git
GIT_TAG latest-passing-build
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
)
set(TESTS OFF CACHE BOOL "Switch off CppUTest Test build")
FetchContent_MakeAvailable(CppUTest)
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS}")
set(CMAKE_CXX_FLAGS_DEBUG "${COMPILE_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_RELEASE "${COMPILE_FLAGS_RELEASE}")
enable_testing()
### add tests
add_subdirectory(path/to/my/tests)
不要使用set(CMAKE_<LANG>*
。使用 *target*
接口。如果你不想 all 的东西用特定的选项编译,不要全局设置它们。相反:
set_target_properties(mytests PROPERTY
CXX_STANDARD 11
etc.
)
target_compile_options(mytests PUBLIC -option1 -option2 ...)
无论如何,SET(CMAKE_<LANG>_*
影响在 之后声明的目标。所以在 FetchContent_MakeAvailable(CppUTest)
之后移动 set(CMAKE_*
我有一个 C/C++ 项目,我想在其中使用 CppUTest。 所以我包括了 CppUTest 的依赖:
include(FetchContent)
FetchContent_Declare(
CppUTest
GIT_REPOSITORY https://github.com/cpputest/cpputest.git
GIT_TAG latest-passing-build
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
)
set(TESTS OFF CACHE BOOL "Switch off CppUTest Test build")
FetchContent_MakeAvailable(CppUTest)
这很好用。
在我的(汽车)项目中,我使用 C++20 标准,我需要启用 all/most 警告。但是当我这样做时,CppUTest 会给我带来很多警告。因此,我想使用与项目代码不同的编译器选项来编译 CppUTest。
如何在 CMake 中配置它? 我在谷歌上搜索了很多,但没有找到任何有用的东西。
谢谢, 斯特凡
PS:我的简化 CMake 文件是:
cmake_minimum_required(VERSION 3.5)
project(projectName LANGUAGES CXX C)
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
MESSAGE("Setting Clang flags:")
SET(COMPILE_FLAGS_WARNINGS "-Weverything")
SET(COMPILE_FLAGS_DEBUG "-Og")
SET(COMPILE_FLAGS_RELEASE "-O2")
SET(COMPILE_FLAGS_COVERAGE "--coverage")
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
#more options here
elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
#more options here
endif()
MESSAGE("Debug: ${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS} ${COMPILE_FLAGS_DEBUG}")
MESSAGE("Release: ${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS} ${COMPILE_FLAGS_RELEASE}")
MESSAGE("Coverage: ${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS} ${COMPILE_FLAGS_DEBUG} ${COMPILE_FLAGS_COVERAGE}")
### Dependencies:
include(FetchContent)
FetchContent_Declare(
CppUTest
GIT_REPOSITORY https://github.com/cpputest/cpputest.git
GIT_TAG latest-passing-build
CONFIGURE_COMMAND ""
BUILD_COMMAND ""
)
set(TESTS OFF CACHE BOOL "Switch off CppUTest Test build")
FetchContent_MakeAvailable(CppUTest)
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS_WARNINGS}")
set(CMAKE_CXX_FLAGS_DEBUG "${COMPILE_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_RELEASE "${COMPILE_FLAGS_RELEASE}")
enable_testing()
### add tests
add_subdirectory(path/to/my/tests)
不要使用set(CMAKE_<LANG>*
。使用 *target*
接口。如果你不想 all 的东西用特定的选项编译,不要全局设置它们。相反:
set_target_properties(mytests PROPERTY
CXX_STANDARD 11
etc.
)
target_compile_options(mytests PUBLIC -option1 -option2 ...)
无论如何,SET(CMAKE_<LANG>_*
影响在 之后声明的目标。所以在 FetchContent_MakeAvailable(CppUTest)
set(CMAKE_*