From 7b8aaf562febeed81a1d27a6e498d63b8b4f6877 Mon Sep 17 00:00:00 2001
From: Joel Rosdahl <joel@rosdahl.net>
Date: Sat, 3 Feb 2024 17:13:12 +0100
Subject: [PATCH] feat: Add support for MSVC /Tc and /Tp options

Closes #1387.
---
 src/argprocessing.cpp | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/argprocessing.cpp b/src/argprocessing.cpp
index a61317e5f..f1a11ab3a 100644
--- a/src/argprocessing.cpp
+++ b/src/argprocessing.cpp
@@ -555,10 +555,19 @@ process_option_arg(const Context& ctx,
     return Statistic::none;
   }
 
-  // MSVC -Fo with no space.
-  if (util::starts_with(arg, "-Fo") && config.is_compiler_group_msvc()) {
-    args_info.output_obj = arg.substr(3);
-    return Statistic::none;
+  if (config.is_compiler_group_msvc()) {
+    // MSVC /Fo with no space.
+    if (util::starts_with(arg, "-Fo")) {
+      args_info.output_obj = arg.substr(3);
+      return Statistic::none;
+    }
+
+    // MSVC /Tc and /Tp options for specifying input file.
+    if (arg.length() > 3 && util::starts_with(arg, "-T")
+        && (arg[2] == 'c' || arg[2] == 'p')) {
+      size_t file_index = arg[3] == ' ' ? 4 : 3;
+      state.input_files.emplace_back(arg.substr(file_index));
+    }
   }
 
   // when using nvcc with separable compilation, -dc implies -c
-- 
2.47.2