From 7436d83ef371d4fee4a66bec235e102ed80275db Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Fri, 19 Aug 2022 18:09:25 +0200
Subject: Add support for msvc tool-chain (cl.exe/link.exe and lib.exe) on
 windows.

---
 src/tools.cc | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 62 insertions(+), 1 deletion(-)

(limited to 'src/tools.cc')

diff --git a/src/tools.cc b/src/tools.cc
index 7e8ac78..cd00f89 100644
--- a/src/tools.cc
+++ b/src/tools.cc
@@ -8,6 +8,14 @@
 
 #include <cassert>
 
+/*
+https://docs.microsoft.com/en-us/cpp/build/reference/compiler-options-listed-alphabetically?view=msvc-170
+/TC Specifies all source files are C.
+/Tc Specifies a C source file.
+/TP Specifies all source files are C++.
+/Tp Specifies a C++ source file.
+*/
+
 ToolChain getToolChain(OutputSystem system)
 {
 	std::string compiler;
@@ -33,6 +41,11 @@ ToolChain getToolChain(OutputSystem system)
 	{
 		return ToolChain::gcc;
 	}
+	else if(cc_cmd.find("cl") != std::string::npos ||
+	        cc_cmd.find("CL") != std::string::npos)
+	{
+		return ToolChain::msvc;
+	}
 
 	std::cerr << "Unsupported output system.\n";
 	return ToolChain::gcc;
@@ -55,7 +68,7 @@ std::vector<std::string> getOptionGcc(opt option, const std::string& arg)
 	case opt::warnings_as_errors:
 		return {"-Werror"};
 	case opt::generate_dep_tree:
-		return {"-MMD"};
+		return {"-MMD", "-MF" + arg};
 	case opt::no_link:
 		return {"-c"};
 	case opt::include_path:
@@ -83,6 +96,50 @@ std::vector<std::string> getOptionGcc(opt option, const std::string& arg)
 	std::cerr << "Unsupported compiler option.\n";
 	return {};
 }
+
+std::vector<std::string> getOptionMsvc(opt option, const std::string& arg)
+{
+	switch(option)
+	{
+	case opt::output:
+		return {"/Fo\""+arg+"\""};
+	case opt::debug:
+		return {"/DEBUG"};
+	case opt::strip:
+		return {};//{"-s"}; TODO
+	case opt::warn_all:
+		return {"/Wall"};
+	case opt::warnings_as_errors:
+		return {"/WX"};
+	case opt::generate_dep_tree:
+		return {"/sourceDependencies", arg};
+	case opt::no_link:
+		return {"/c"};
+	case opt::include_path:
+		return {"/I" + arg};
+	case opt::library_path:
+		return {"/LIBPATH:" + arg};
+	case opt::link:
+		return {}; //{"-l" + arg}; TODO
+	case opt::cpp_std:
+		return {"/std:" + arg};
+	case opt::build_shared:
+		return {};//{"-shared"}; TODO
+	case opt::threads:
+		return {};// {"-pthread"}; TODO
+	case opt::optimization:
+		return {"/O" + arg}; // TODO: max 2
+	case opt::position_independent_code:
+		return {};//{"-fPIC"}; TODO
+	case opt::position_independent_executable:
+		return {};//{"-fPIE"}; TODO
+	case opt::custom:
+		return {arg};
+	}
+
+	std::cerr << "Unsupported compiler option.\n";
+	return {};
+}
 }
 
 std::vector<std::string> getOption(ToolChain tool_chain,
@@ -94,6 +151,8 @@ std::vector<std::string> getOption(ToolChain tool_chain,
 	case ToolChain::gcc:
 	case ToolChain::clang:
 		return getOptionGcc(option, arg);
+	case ToolChain::msvc:
+		return getOptionMsvc(option, arg);
 	}
 
 	std::cerr << "Unsupported tool-chain.\n";
@@ -129,6 +188,8 @@ std::pair<opt, std::string> getOption(const std::string& flag,
 	case ToolChain::gcc:
 	case ToolChain::clang:
 		return getOptionGcc(flag);
+	case ToolChain::msvc:
+		break; // TODO
 	}
 
 	std::cerr << "Unsupported tool-chain.\n";
-- 
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