/^(	*)#end/  { if (deep == skip) { skip -= 1; } deep -= 1; next; }

	/^(	*)#else/ { if (deep == skip) { skip -= 1; } else if (deep - 1 == skip) { skip += 1; } next; }

	/^(	*)#if/   {

		gsub("	", "", $0);

		gsub("^#if ", "", $0);

		if (deep != skip) { deep += 1; next; }

		deep += 1;

		if ($0 == "ALLEGRO"     && "'$allegro_config'" == "")      { next; }

		if ($0 == "SDL"         && "'$sdl_config'" == "")          { next; }

		if ($0 == "PNG"         && "'$png_config'" == "")          { next; }

		if ($0 == "OSX"         && "'$os'" != "OSX")               { next; }

		if ($0 == "OS2"         && "'$os'" != "OS2")               { next; }

		if ($0 == "DEDICATED"   && "'$enable_dedicated'" != "1")   { next; }

		if ($0 == "AI"          && "'$enable_ai'" == "0")          { next; }

		if ($0 == "COCOA"       && "'$with_cocoa'" == "0")         { next; }

		if ($0 == "DOS"         && "'$os'" != "DOS")               { next; }

		if ($0 == "HAIKU"       && "'$os'" != "HAIKU")             { next; }

		if ($0 == "WIN32"       && "'$os'" != "MINGW" &&

		                 "'$os'" != "CYGWIN" && "'$os'" != "MSVC") { next; }

		if ($0 == "MSVC"        && "'$os'" != "MSVC")              { next; }

		if ($0 == "DIRECTMUSIC" && "'$with_direct_music'" == "0")  { next; }

		if ($0 == "FLUIDSYNTH"  && "'$fluidsynth'" == "" )         { next; }

		if ($0 == "HAVE_THREAD" && "'$with_threads'" == "0")       { next; }

		if ($0 == "SSE"         && "'$with_sse'" != "1")           { next; }

		skip += 1;

		next;

	}

	/^(	*)#/ { next }

	/^$/ { next }

	/\.h$/ { next }

	/\.hpp$/ { next }

	{

		if (deep == skip) {

			gsub("	", "", $0);

			print $0;

		}

	}

'

# Read the source.list and process it

# Please escape ALL " within ` because e.g. "" terminates the string in some sh implementations

SRCS="`< $ROOT_DIR/source.list tr '\r' '\n' | $awk \"$AWKCOMMAND\" | LC_ALL=C $PIPE_SORT`"