Xcode does not support custom build commands

[wraitii]

It seems the Xcode module does not handle custom build commands. We just switched to using them for 0 A.D.'s build system for the tests, and the Xcode test project doesn't work.

This is apparently the subject of a "forgotten" PR.

This can be tested by building 0 A.D., but the following "minimal" example works too:

workspace "Example"
	configurations { "Release" }
	platforms { "macOS" }
	location ("workspaces/")
	language "C++"
	targetdir ("build/output")
	objdir ("build/obj")
	nativewchar "Off"
	buildoptions { "-Wall", "-Wextra" }

project "Example"
	kind "ConsoleApp"

	files { "main.cpp" }

	filter "files:*.cpp"
		buildmessage 'Doing stuff'
		buildcommands {
			'touch somefile.cpp'
		}

		buildoutputs { 'somefile.cpp' }

[na-Itms]

To clarify the issue we have, we wrote a small premake module for cxxtest here: https://trac.wildfiregames.com/browser/ps/trunk/build/premake/cxxtest/cxxtest.lua
The code works around the limitations of the gmake action (we may look into the gmake2 action in the future) so the issue here is not #223.

Thanks in advance! 🙂