问题是，我应该把这两条指令写在工程的 CMakeLists.txt 还是 src 目录下的 CMakeLists.txt，把握一个简单的原则，在哪里 ADD_EXECUTABLE 或 ADD_LIBRARY， 如果需要改变目标存放路径，就在哪里加入上述的定义。 在这个例子里，当然就是指 src 下的 CMakeLists.txt 了。 4，如何安装。 安装的需要有两种，一种是从代码编译后直接 [OPTIONAL] ] [...]) 参数中的 TARGETS 后面跟的就是我们通过 ADD_EXECUTABLE 或者 ADD_LIBRARY 定义的 目标文件，可能是可执行二进制、动态库、静态库。 目标类型也就相对应的有三种，ARCHIVE 特指静态库，LIBRARY 特指动态库，RUNTIME 特指可执行目标二进制。 DESTINATION void HelloFunc(); #endif 在 lib 目录下建立 CMakeLists.txt，内容如下： SET(LIBHELLO_SRC hello.c) ADD_LIBRARY(hello SHARED ${LIBHELLO_SRC}) 三，编译共享库: 仍然采用 out-of-source 编译的方式，按照习惯，我们建立一个 build 目录，在 build

module capabilities add_library(fmt) target_sources(fmt PUBLIC FILE_SET fmt_module TYPE CXX_MODULES FILES src/fmt.cc ) target_compile_features(fmt PUBLIC cxx_std_20) add_library(fmt::fmt ALIAS fmt) the module interfaces - cont’d CMake 3.28 (to be released) # Create imported target fmt::fmt add_library(fmt::fmt SHARED IMPORTED) set_target_properties(fmt::fmt PROPERTIES CXX_EXTENSIONS "OFF" compatibility (cont’d) add_subdirectory(flux) add_subdirectory(fmt) add_subdirectory(argparse) add_library(foo) target_sources(foo PUBLIC FILE_SET cxx_modules TYPE CXX_MODULES FILES foo.cxx

dyndep support added to ninja, merged into 1.10 (released Jan 2020) 11C++ Modules: Example Target add_library(A) target_sources(A PRIVATE a2.cpp a3.cpp PRIVATE FILE_SET CXX_MODULES FILES source files” 13C++ Modules: Example Project add_library(A) # add sources to A add_library(B) # add sources to B target_link_libraries(B PRIVATE A) add_library(C) # add sources to C target_link_libraries(C EXPORT_BUILD_DATABASE property on targets set(CMAKE_EXPORT_BUILD_DATABASE 1) find_package(WithModules) add_library(A) # add sources to A target_link_libraries(A PRIVATE WithModules::WithModules) 26Build Databases:

add_executable 可以生成可执行文件外，还可以通过 add_library 生成库 文件。 • add_library 的语法与 add_executable 大致相同，除了他需要指定是动态库还是静态库： • add_library(test STATIC source1.cpp source2.cpp) # 生成静态库 libtest.a • add_library(test SHARED source1

if (NOT TARGET Catch2) project(Catch2 CXX) set(CMAKE_CXX_STANDARD 11) add_library(${PROJECT_NAME} INTERFACE) target_include_directories(${PROJECT_NAME} INTERFACE ${CMAKE_CU ${CMAKE_CURRENT_SOURCE_DIR}/include) # Mimic the library names in Catch2's own CMake files: add_library(Catch2::Catch2 ALIAS Catch2) # This one is historical, left over from when ApprovalTests.cpp cpp was first created. # We could encourage users to move away from it. add_library(catch2 ALIAS Catch2) endif ()

49 add_library(MathFunctions MathFunctions.cxx) target_compile_definitions(MathFunctions PRIVATE "USE_MYMATH") target_compile_definitions(MathFunctions PUBLIC "MYMATH_REQUIRED_FLAG") add_library(SqrtLibrary MathFunctions/libSqrtLibrary.a && :Library is treated the same: built-in source tree or prebuilt add_library(bar) # part of the build find_package(bar REQUIRED) # external to the build add_executable(foo)

if(ZLIB_FOUND) set(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR}) if(NOT TARGET ZLIB::ZLIB) add_library(ZLIB::ZLIB UNKNOWN IMPORTED) set_target_properties(ZLIB::ZLIB PROPERTIES INTER project(mypkg CXX) set(CMAKE_EXPERIMENTAL_EXPORT_PACKAGE_INFO "b80be207-778e-46ba-8080-b23bba22639e") add_library(mypkg src/mypkg.cpp) target_include_directories(mypkg PUBLIC $") add_library(zlib IMPORTED) set_property(TARGET ZLIB::ZLIB PROPERTY INTERFACE_LINK_LIBRARIES

set(LIB_NAME ApprovalTests) add_library(${LIB_NAME} INTERFACE) target_include_directories(${LIB_NAME} INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}) add_library(${LIB_NAME}::${LIB_NAME} ALIAS ${LIB_NAME})

set(LIB_NAME ApprovalTestsQt) add_library(${LIB_NAME} INTERFACE) target_include_directories(${LIB_NAME} INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}) add_library(${LIB_NAME}::${LIB_NAME} ALIAS ${LIB_NAME})

set(LIB_NAME shared_code) set(CMAKE_CXX_STANDARD 17) add_library(${LIB_NAME} SVGDrawing.cpp SVGDrawing.h ComplexOperation.cpp ComplexOperation.h HelloApprovals.cpp Logger.cpp Logger.h StringUtilities.cpp StringUtilities.h ) add_library( ${LIB_NAME}::${LIB_NAME} ALIAS ${LIB_NAME} ) target_include_directories(${LIB_NAME}