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Including project in CMakeLists.txt
By snorkel, history, 6 years ago, In English

How can I include a header file without writing #include "header.h" for example using cmakelists.txt?

For example without writing #define DEFINE I defined it from cmakelists with the command add_definitions(-DDEFINE)

Can I do the similar thing?

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6 years ago, hide # |
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Depends on the compiler. E.g. GCC has -include header.h key, see docs.

You can use it in CMakeLists.txt via add_compile_options, e.g. add_compile_options(-include header.h). Note that this will include header.h in each translation unit ("source file") for all targets.

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    6 years ago, hide # ^ |
     
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    This does not work for me. I tried both Cygwin and MinGW.

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      6 years ago, hide # ^ |
       
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      Make sure add_compile_options is specified before add_executable, like this.

      Alternatively, use target_compile_options(main PRIVATE -include pre-main.inc.cpp) after add_executable(main main.cpp).

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        6 years ago, hide # ^ |
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        If I write it before add_executable it says header.h: No such file or directory. My Cmake looks like this:

        "untitled1" is the project name.

        cmake
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