仅在windows上创建项目时，如何设置CMAKE_工具链_文件

当CMake也用于Linux构建时，我尝试使用vcpkg for Windows构建。Linux版本不使用vcpkg

这是在windows上工作的CMake的一部分：

cmake_minimum_required(VERSION 3.5)
file(TO_CMAKE_PATH $ENV{LOCAL_ROOT} LOCAL_ROOT)
set(VCPKG_ROOT "${LOCAL_ROOT}/vcpkg-master")
set(CMAKE_TOOLCHAIN_FILE "${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
set(VCPKG_TARGET_TRIPLET "x64-windows-static" CACHE STRING "")
OPTION(USE_BOOST "use BOOST library" ON)
OPTION(CREATE_DLL "Create DLL or .so library" OFF)
OPTION(READ_GIT_HASH "read git sha1 hash for versioning" OFF)
project(ExtractOnctData)
if(MSVC)
   add_definitions (-D_USE_MATH_DEFINES)
   add_definitions (-DNOMINMAX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP ")
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}  /MTd" )
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Ot /openmp /MT" )
else(MSVC)
    #Use C++11
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    #Find and use standard libraries
    find_package(Threads REQUIRED)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
endif(MSVC)

但它破坏了Linux构建，因为在CMake中添加了三个在Linux构建中未使用的vcpkg设置

如果我这样做：

cmake_minimum_required(VERSION 3.5)
if(MSVC)
    file(TO_CMAKE_PATH $ENV{LOCAL_ROOT} LOCAL_ROOT)
    set(VCPKG_ROOT "${LOCAL_ROOT}/vcpkg-master")
    set(CMAKE_TOOLCHAIN_FILE "${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
    set(VCPKG_TARGET_TRIPLET "x64-windows-static" CACHE STRING "")
endif(MSVC)
OPTION(USE_BOOST "use BOOST library" ON)
OPTION(CREATE_DLL "Create DLL or .so library" OFF)
OPTION(READ_GIT_HASH "read git sha1 hash for versioning" OFF)
project(ExtractOnctData)
if(MSVC)
   add_definitions (-D_USE_MATH_DEFINES)
   add_definitions (-DNOMINMAX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP ")
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}  /MTd" )
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Ot /openmp /MT" )
else(MSVC)
    #Use C++11
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    #Find and use standard libraries
    find_package(Threads REQUIRED)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
endif(MSVC)

cmake_minimum_required(VERSION 3.5)
OPTION(USE_BOOST "use BOOST library" ON)
OPTION(CREATE_DLL "Create DLL or .so library" OFF)
OPTION(READ_GIT_HASH "read git sha1 hash for versioning" OFF)
project(ExtractOnctData)
if(MSVC)
    file(TO_CMAKE_PATH $ENV{LOCAL_ROOT} LOCAL_ROOT)
    set(VCPKG_ROOT "${LOCAL_ROOT}/vcpkg-master")
    set(CMAKE_TOOLCHAIN_FILE "${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
    set(VCPKG_TARGET_TRIPLET "x64-windows-static" CACHE STRING "")
endif(MSVC)
if(MSVC)
   add_definitions (-D_USE_MATH_DEFINES)
   add_definitions (-DNOMINMAX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP ")
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}  /MTd" )
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Ot /openmp /MT" )
else(MSVC)
    #Use C++11
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    #Find and use standard libraries
    find_package(Threads REQUIRED)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
endif(MSVC)

那么它在Windows中就不起作用了

如果我这样做：

cmake_minimum_required(VERSION 3.5)
if(MSVC)
    file(TO_CMAKE_PATH $ENV{LOCAL_ROOT} LOCAL_ROOT)
    set(VCPKG_ROOT "${LOCAL_ROOT}/vcpkg-master")
    set(CMAKE_TOOLCHAIN_FILE "${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
    set(VCPKG_TARGET_TRIPLET "x64-windows-static" CACHE STRING "")
endif(MSVC)
OPTION(USE_BOOST "use BOOST library" ON)
OPTION(CREATE_DLL "Create DLL or .so library" OFF)
OPTION(READ_GIT_HASH "read git sha1 hash for versioning" OFF)
project(ExtractOnctData)
if(MSVC)
   add_definitions (-D_USE_MATH_DEFINES)
   add_definitions (-DNOMINMAX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP ")
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}  /MTd" )
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Ot /openmp /MT" )
else(MSVC)
    #Use C++11
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    #Find and use standard libraries
    find_package(Threads REQUIRED)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
endif(MSVC)

cmake_minimum_required(VERSION 3.5)
OPTION(USE_BOOST "use BOOST library" ON)
OPTION(CREATE_DLL "Create DLL or .so library" OFF)
OPTION(READ_GIT_HASH "read git sha1 hash for versioning" OFF)
project(ExtractOnctData)
if(MSVC)
    file(TO_CMAKE_PATH $ENV{LOCAL_ROOT} LOCAL_ROOT)
    set(VCPKG_ROOT "${LOCAL_ROOT}/vcpkg-master")
    set(CMAKE_TOOLCHAIN_FILE "${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
    set(VCPKG_TARGET_TRIPLET "x64-windows-static" CACHE STRING "")
endif(MSVC)
if(MSVC)
   add_definitions (-D_USE_MATH_DEFINES)
   add_definitions (-DNOMINMAX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP ")
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}  /MTd" )
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Ot /openmp /MT" )
else(MSVC)
    #Use C++11
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    #Find and use standard libraries
    find_package(Threads REQUIRED)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
endif(MSVC)

它在windows中不工作

如何解决此问题？

有几件事：

在调用

项目（ExtractOnctData）

之前，您需要定义

CMAKE\u TOOLCHAIN\u文件

和

VCPKG\u TARGET\u三元组

您希望使用

if（WIN32）

（目标系统）或

if（CMAKE\u HOST\u WIN32）

而不是

if（MSVC）

<代码>如果（MSVC）是编译器检查，而不是主机/目标系统检查

删除

选项（创建DLL“创建DLL或.so库”关闭）

。这应该由

BUILD\u SHARED\u LIBS

（）控制。如果允许DLL生成，请确保在Windows上正确导出函数

find_包（需要线程）集（CMAKE_CXX_标志“${CMAKE_CXX_标志}-pthread”）

。链接目标线程：：线程，您可以将其移出if

请不要在Windows上将

/MT（d）

添加到

CMAKE\u CXX\u FLAGS\u（DEBUG | RELEASE）

不要添加

-std=c++11

而是使用

target\u compile\u功能（）。可能会添加一个编译器（flag | requirements）接口目标，用于设置所有这些标志

您是否尝试过改用

if（WIN32）

？看这个。