From f5a327cd366348a739a282f380acd627815183b5 Mon Sep 17 00:00:00 2001
From: Jonathan Marler <johnnymarler@gmail.com>
Date: Tue, 17 Jun 2025 13:40:25 -0600
Subject: [PATCH] windows: msvc: avoid linking to non-redistributable ucrt

---
 CMakeLists.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 03d5c5cfbe..13f777245f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -159,6 +159,16 @@ if(ZIG_STATIC_ZSTD)
     list(APPEND LLVM_LIBRARIES "${ZSTD}")
 endif()
 
+if (MSVC)
+    if(NOT DEFINED CMAKE_MSVC_RUNTIME_LIBRARY)
+        if("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
+            # avoid linking to the debug versions of ucrt by default
+            # as they are not redistributable.
+            set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDLL)
+        endif()
+    endif()
+endif ()
+
 if(ZIG_STATIC_CURSES)
     list(REMOVE_ITEM LLVM_LIBRARIES "-lcurses")
     find_library(CURSES NAMES libcurses.a libncurses.a NAMES_PER_DIR