CMake Cookbook by Radovan Bast

Author:Radovan Bast
Language: eng
Format: epub, mobi
Tags: COM051440 - COMPUTERS / Software Development and Engineering / Tools, COM010000 - COMPUTERS / Compilers, COM051230 - COMPUTERS / Software Development and Engineering / General
Publisher: Packt
Published: 2018-09-26T06:27:16+00:00

message(STATUS "working C compile flag: ${working_compile_flag}")

And we try a list of C++ flags:

set_compiler_flag(

working_compile_flag CXX REQUIRED

"-foo" # this should fail

"-g" # this should work with GNU, Intel, PGI

"/RTCcsu" # this should work with MSVC

)

message(STATUS "working CXX compile flag: ${working_compile_flag}")

Now, we can configure the project and verify the output. Only the relevant output is shown and the output may differ depending on the compiler:

$ mkdir -p build

$ cd build

$ cmake ..

-- ...

-- Performing Test _flag_works

-- Performing Test _flag_works - Failed

-- Performing Test _flag_works

-- Performing Test _flag_works - Failed

-- Performing Test _flag_works

-- Performing Test _flag_works - Failed

-- Performing Test _flag_works

-- Performing Test _flag_works - Success

-- working C compile flag: -Wall

-- Performing Test _flag_works

-- Performing Test _flag_works - Failed

-- Performing Test _flag_works

-- Performing Test _flag_works - Success

-- working CXX compile flag: -g

-- ...

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