[SOLVED] CMake exclude files from a given pattern after file(GLOB_RECURSE)

Issue

I have an little library which has an file structure like this:

CMakeLists.txt
LibFoo/
  Foo.h
  FooWin.cpp
  FooWin.inl
  FooPosix.cpp
  FooPosix.inl

And when i have to build the library in a specific OS (for example Windows) they should contain in the list before using file(GLOB_RECURSE) using a macro:

macro( add_recursive dir retVal)
file( GLOB_RECURSE ${retVal} ${dir}/*.h ${dir}/*.cpp ${dir}/*.c ${dir}/*.inl )
endmacro()

and my excluding pattern is like this (when Windows is the build host): *Posix.* but doesn't work, i tried with this approach:

macro( add_recursive dir retVal pattern)
file( GLOB_RECURSE ${retVal} ${dir}/*.h ${dir}/*.cpp ${dir}/*.c ${dir}/*.inl EXCLUDE PATTERN "${pattern}")
endmacro()

but the POSIX files still here anyways, CMake doesn't report an error or anything suggested about that.

Solution

There is no EXCLUDE option for file(GLOB_RECURSE ...) command flow. You probably take this option from file(COPY|INSTALL ...), which is a different command flow.

You may iterate over list, obtained from file(GLOB_RECURSE) and exclude needed files manually:

macro( add_recursive dir retVal)
    # Store unfiltered list of files into temporary list
    file( GLOB_RECURSE _tmp_list ${dir}/*.h ${dir}/*.cpp ${dir}/*.c ${dir}/*.inl )
    # Resulted list is initially empty. Copy all needed elements into it.
    set(${retval})
    foreach(f ${_tmp_list})
        if(NOT f MATCHES "Posix.")
            list(APPEND ${retVal} ${f})
        endif()
    endforeach()

endmacro()

Answered By - Tsyvarev

Answer Checked By - Senaida (WPSolving Volunteer)