CMake的不承认MSVC编译

我试图克隆openvr并获得招呼OpenGL的样品运行，以下their instructions：

cd samples 
mkdir build 
cd build 
cmake .. -G "Visual Studio 14 2015 Win64" -DCMAKE_PREFIX_PATH=C:/Qt/5.6/msvc2013_64/lib/cmake

我得到：

$ cmake .. -G "Visual Studio 14 2015 Win64" -DCMAKE_PREFIX_PATH=C:/Qt/5.6/msvc20                  13_64/lib/cmake 
-- The C compiler identification is MSVC 19.0.24215.1 
-- The CXX compiler identification is MSVC 19.0.24215.1 
-- Check for working C compiler using: Visual Studio 14 2015 Win64 
-- Check for working C compiler using: Visual Studio 14 2015 Win64 -- works 
-- Detecting C compiler ABI info 
-- Detecting C compiler ABI info - done 
-- Check for working CXX compiler using: Visual Studio 14 2015 Win64 
-- Check for working CXX compiler using: Visual Studio 14 2015 Win64 -- works 
-- Detecting CXX compiler ABI info 
-- Detecting CXX compiler ABI info - done 
-- Detecting CXX compile features 
-- Detecting CXX compile features - done 
-- Compilation set for 64bits architectures. 
CMake Warning at CMakeLists.txt:40 (message): 
    SDL x64 runtime binaries not provided on Windows. 


CMake Error at CMakeLists.txt:98 (message): 
    Unsupported compiler. 


-- Configuring incomplete, errors occurred! 
See also "C:/Users/GBarbieri/Documents/Visual Studio 2015/Projects/openvr/sample                  s/build/CMakeFiles/CMakeOutput.log".

如果我去98行检查：

if( (${CMAKE_CXX_COMPILER_ID} MATCHES "GNU") 
    OR (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")) 
    # Better to use the prebuilt GNU preprocessor define __GNUC__, 
    # kept for legacy reason with the sample code. 
    add_definitions(-DGNUC) 

    set(CMAKE_CXX_FLAGS   "${CMAKE_CXX_FLAGS} -std=c++11 -include ${SHARED_SRC_DIR}/compat.h") 
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall -Wextra -pedantic -g") 
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2") 

    # Handles x86 compilation support on x64 arch. 
    if(${PLATFORM} MATCHES 32) 
    set(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -m32") 
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m32") 
    endif() 
elseif(${CMAKE_CXX_COMPILER_ID} MATCHES "MSVC") 
    set(CMAKE_CXX_FLAGS   "${CMAKE_CXX_FLAGS} /Za") 
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /w2 /DEBUG") 
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MP /INCREMENTAL:NO") 
else() 
    message(FATAL_ERROR "Unsupported compiler. ") // line 98 
endif()

看来它无法比拟"MSVC" ..让我做一个尝试，让我这个代码片段前添加：

message("${CMAKE_CXX_COMPILER_ID}") 
if(${CMAKE_CXX_COMPILER_ID} MATCHES "MSVC") 
    message("match") 
else() 
    message("!match") 
endif()

然后返回：

MSVC 
!match 
CMake Error at CMakeLists.txt:104 (message): 
    Unsupported compiler.

什么？

你能找出什么是错的，现在可好？

来源

2017-01-17 elect

它不应该只是：如果（MSVC）？ – roalz

你有试过吗？如果（CMAKE_CXX_COMPILER_ID匹配“MSVC”） – roalz

这工作。我将修改'CMakeList.txt' – elect

好吧，我在评论已经尝试过，正确的答案是使用：的

if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")

代替

if(${CMAKE_CXX_COMPILER_ID} MATCHES "MSVC")

来源

2017-01-17 09:20:21 roalz

如果你有兴趣，为什么第一部作品，二是工作不看细节[什么是CMake的语法来设置和使用变量？]（http://stackoverflow.com/questions/31037882/whats-the-cmake-syntax-to-set-and-use-variables）。有趣的是，我正是使用这个'MSVC'示例来演示可变命名解析的问题。 – Florian

CMake的不承认MSVC编译

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