CROW_AMALGAMATE fails with CMake Ninja generator

[bgs99]

When trying to build with CROW_AMALGAMATE=ON and -G Ninjathe

ninja: error: '<...>/Crow/include/*.h', needed by 'crow_all.h', missing and no known rule to make it

error is produced for me on CMake 3.30.2

Seems like globbing is not explicitly supported in DEPENDS argument of add_custom_command and it just happens to work with the Makefile generator.

As a solution, it is possible to use globbing via https://cmake.org/cmake/help/latest/command/file.html#glob. It is not the recommended way, but would probably work no worse than the current approach - the recommended way is to spell all of the dependencies explicitly.

I can make a pull request with either fix if you are interested.

Full configure command for reference:

/usr/bin/cmake -DCROW_AMALGAMATE=ON -S. -Bbuild -G Ninja