Auto-detect X11 dependency

autoconf/gcc.lua

@@ -0,0 +1,27 @@
+---
+-- Autoconfiguration.
+-- Copyright (c) 2016 Blizzard Entertainment
+---
+local p = premake
+local gcc = p.tools.gcc
+
+function gcc.try_compile(cfg, text, parameters)
+	-- write the text to a temporary file.
+	local cppFile = path.join(cfg.objdir, "temp.cpp")
+	if not io.writefile(cppFile, text) then
+		return nil
+	end
+	
+	if parameters == nil then
+		parameters = ""
+	end
+
+	local outFile = path.join(cfg.objdir, "temp.out")
+
+	-- compile that text file.
+	if os.execute('gcc "' .. cppFile .. '" ' .. parameters .. ' -o "' .. outFile ..'"  &> /dev/null') then
+		return outFile
+	else
+		return nil
+	end
+end