Added ability for toolsets to specify tool output extensions

Author: samsinsane

modules/gmake/gmake_cpp.lua

@@ -58,25 +58,33 @@
 	function cpp.initialize()
 		rule 'cpp'
 			fileExtension { ".cc", ".cpp", ".cxx", ".mm" }
-			buildoutputs  { "$(OBJDIR)/%{file.objname}.o" }
+			buildoutputs  { "$(OBJDIR)/%{file.objname}%{premake.modules.gmake.cpp.gettooloutputext('cxx', cfg)}" }
 			buildmessage  '$(notdir $<)'
 			buildcommands {'$(CXX) %{premake.modules.gmake.cpp.fileFlags(cfg, file)} $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"'}
 
 		rule 'cc'
 			fileExtension {".c", ".s", ".m"}
-			buildoutputs  { "$(OBJDIR)/%{file.objname}.o" }
+			buildoutputs  { "$(OBJDIR)/%{file.objname}%{premake.modules.gmake.cpp.gettooloutputext('cc', cfg)}" }
 			buildmessage  '$(notdir $<)'
 			buildcommands {'$(CC) %{premake.modules.gmake.cpp.fileFlags(cfg, file)} $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"'}
 
 		rule 'resource'
 			fileExtension ".rc"
-			buildoutputs  { "$(OBJDIR)/%{file.objname}.res" }
+			buildoutputs  { "$(OBJDIR)/%{file.objname}%{premake.modules.gmake.cpp.gettooloutputext('rc', cfg)}" }
 			buildmessage  '$(notdir $<)'
 			buildcommands {'$(RESCOMP) $< -O coff -o "$@" $(ALL_RESFLAGS)'}
 
 		global(nil)
 	end
 
+	function cpp.gettooloutputext(tool, cfg)
+		local toolset = gmake.getToolSet(cfg)
+		if toolset.gettooloutputext ~= nil then
+			return toolset.gettooloutputext(tool)
+		end
+
+		return iif(tool == "rc", ".res", ".o")
+	end
 
 	function cpp.createRuleTable(prj)
 		local rules = {}

modules/gmake/tests/test_gmake_file_rules.lua

@@ -81,6 +81,46 @@
 	end
 
 
+--
+-- Object filenames use correct extension based on toolset
+--
+
+	function suite.objectNameExtensions_onDefault()
+		files { "src/hello.cpp", "src/test.c" }
+		prepare()
+		test.capture [[
+# File Rules
+# #############################################
+
+$(OBJDIR)/hello.o: src/hello.cpp
+	@echo "$(notdir $<)"
+	$(SILENT) $(CXX) $(ALL_CXXFLAGS) $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"
+$(OBJDIR)/test.o: src/test.c
+	@echo "$(notdir $<)"
+	$(SILENT) $(CC) $(ALL_CFLAGS) $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"
+
+]]
+	end
+
+	function suite.objectNameExtensions_onMSC()
+		toolset "msc"
+		files { "src/hello.cpp", "src/test.c" }
+		prepare()
+		test.capture [[
+# File Rules
+# #############################################
+
+$(OBJDIR)/hello.obj: src/hello.cpp
+	@echo "$(notdir $<)"
+	$(SILENT) $(CXX) $(ALL_CXXFLAGS) $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"
+$(OBJDIR)/test.obj: src/test.c
+	@echo "$(notdir $<)"
+	$(SILENT) $(CC) $(ALL_CFLAGS) $(FORCE_INCLUDE) -o "$@" -MF "$(@:%.o=%.d)" -c "$<"
+
+]]
+	end
+
+
 --
 -- Two files with the same base name should have different object files.
 --

src/tools/clang.lua

@@ -364,3 +364,7 @@
 		end
 		return value
 	end
+
+	function clang.gettooloutputext(tool)
+		return gcc.gettooloutputext(tool)
+	end

src/tools/gcc.lua

@@ -724,3 +724,7 @@
 		end
 		return (cfg.gccprefix or "") .. gcc.tools[tool] .. version
 	end
+
+	function gcc.gettooloutputext(tool)
+		return iif(tool == "rc", ".res", ".o")
+	end

src/tools/msc.lua

@@ -494,6 +494,9 @@
 		return msc.tools[tool]
 	end
 
+	function msc.gettooloutputext(tool)
+		return iif(tool == "rc", ".res", ".obj")
+	end
 
 
 	function msc.getwarnings(cfg)