CMAKE 中的操作系统特定说明:如何? [英] OS specific instructions in CMAKE: How to?

问题描述

我是 CMAKE 的初学者.下面是一个简单的 cmake 文件，它在 mingw 环境窗口中运行良好.问题很明显出在 CMAKE 的 target_link_libraries() 函数上，我在其中链接了 libwsock32.a.在 Windows 中，这有效，我得到了结果.

I am a beginner to CMAKE. Below is a simple cmake file which works well in mingw environment windows. The problem is clearly with target_link_libraries() function of CMAKE where I am linking libwsock32.a. In windows this works and I get the results.

然而，正如预期的那样，在 Linux 中，/usr/bin/ld 将查找 -lwsock32，而 Linux 操作系统上没有.

However, as expected, in Linux, the /usr/bin/ld will look for -lwsock32 which is NOT there on the Linux OS.

我的问题是:如何指示 CMAKE 避免在 Linux 操作系统中链接 wsock32 库???

My Problem is: How do I instruct CMAKE to avoid linking wsock32 library in Linux OS???

任何帮助将不胜感激.

我的简单 CMake 文件:

My Simple CMake file:

 PROJECT(biourl)
 set (${PROJECT_NAME}_headers ./BioSocketAddress.h  ./BioSocketBase.h ./BioSocketBuffer.h ./BioSocketCommon.h  ./BioSocketListener.h  ./BioSocketPrivate.h  ./BioSocketStream.h ./BioUrl.h BioDatabase.h )

set (${PROJECT_NAME}_sources BioSocketAddress.C  BioSocketBase.C  BioSocketCommon.C BioSocketStream.C  BioUrl.C BioDatabase.C )

add_library(${PROJECT_NAME} STATIC ${${PROJECT_NAME}_headers} ${${PROJECT_NAME}_sources} )

# linkers
#find_library(ws NAMES wsock32 PATHS ${PROJECT_SOURCE_DIR} NO_SYSTEM_ENVIRONMENT_PATH NO_DEFAULT_PATH)

target_link_libraries(${PROJECT_NAME} bioutils wsock32)

install (TARGETS ${PROJECT_NAME}
       RUNTIME DESTINATION bin
       LIBRARY DESTINATION lib
       ARCHIVE DESTINATION lib/archive )

推荐答案

使用

if (WIN32)
    #do something
endif (WIN32)

或

if (UNIX)
    #do something
endif (UNIX)

或

if (MSVC)
    #do something
endif (MSVC)

或类似的

参见 CMake 有用的变量和 CMake 检查平台

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