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I want to create a project in C++11 and I use CMake as my build system.
How can I add a minimum compiler version requisite in the CMake config files?
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DIFFERENCE BETWEEN g++ & gccg++ is used to compile C++ program. gcc is used to compile C program.
GNU C++ Compiler ( g++ ) is a compiler in Linux which is used to compile C++ programs. It compiles both files with extension . c and . cpp as C++ files. The following is the compiler command to compile C++ program.
Choose your platform and install. You can test by opening Terminal (Mac) / cmd.exe (Windows) and entering g++ . If you get a warning that no files were provided, then you're all set! Otherwise, if you get an error about the command not being found, then the C++ compiler is not installed properly.
AFAIK, there is no built-in support for something like this, but you could certainly write it yourself:
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU") if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "your.required.gcc.version") message(FATAL_ERROR "Insufficient gcc version") endif() elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "your.required.msvc.version") message(FATAL_ERROR "Insufficient msvc version") endif() elseif(...) # etc. endif() However, I suggest you actually consider a feature-detection approach instead. That is, use try_compile() to verify that the compiler supports the features you need, and FATAL_ERROR if it doesn't. It's more idiomatic in CMake, and has the added benefit you don't have to discover the appropriate minimal version for all compilers out there.
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