我想检测当前的项目语言,例如,如果我有这样的东西:
cmake_minimum_required (VERSION 3.0)
project (foo VERSION 1.0 LANGUAGES CXX)
我需要这样的东西
if (project_lang EQUAL "CXX")
# do something for c++
endif ()
Thanks!
您可以使用全球财产 http://www.cmake.org/cmake/help/v3.3/manual/cmake-properties.7.html#properties-of-global-scope ENABLED_LANGUAGES http://www.cmake.org/cmake/help/v3.3/prop_gbl/ENABLED_LANGUAGES.html:
get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
message("languages: ${languages}")
for project(Foo)
,即默认值:
languages: C;CXX;RC
for project(Foo LANGUAGES CXX)
,即 C++ 项目:
languages: CXX;RC
for project(Foo LANGUAGES C)
,即 C 项目:
languages: C;RC
etc.
检查是否启用了确切语言的最佳命令是if(... IN_LIST ...)
(自可用以来CMake 3.3 http://www.cmake.org/cmake/help/v3.3/release/3.3.html#commands):
if("CXX" IN_LIST languages)
message("C++ enabled")
endif()
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