From bb1bc2f07bdd85ed76d2dfa07a46670fa8b53769 Mon Sep 17 00:00:00 2001
From: Mathis Logemann <mathisloge@gmail.com>
Date: Fri, 18 Feb 2022 18:48:27 +0100
Subject: [PATCH] [CMake] enable msvc static crt

---
 CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a41f4ec83..4e77bc927 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,7 @@ mapnik_option(INSTALL_DEPENDENCIES "if ON, all dependencies (eg. required dlls)
 
 mapnik_option(BUILD_SHARED_LIBS "build mapnik dynamic(ON) or static(OFF)" ON)
 mapnik_option(BUILD_SHARED_PLUGINS "build dynamic plugins" ${BUILD_SHARED_LIBS}) # use BUILD_SHARED_LIBS as default option
+mapnik_option(BUILD_SHARED_CRT "(only windows with msvc) use msvc shared crt" ${BUILD_SHARED_LIBS}) # use BUILD_SHARED_LIBS as default option
 if(WIN32 AND BUILD_SHARED_PLUGINS AND NOT BUILD_SHARED_LIBS)
     message(FATAL_ERROR "static libmapnik and dynamic plugins won't work correctly")
 endif()
@@ -363,6 +364,11 @@ add_compile_options(
     "$<$<CXX_COMPILER_ID:MSVC>:/utf-8>"
     "$<$<CXX_COMPILER_ID:MSVC>:/EHsc>"
 )
+if(BUILD_SHARED_CRT)
+    set_property(GLOBAL PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
+else()
+    set_property(GLOBAL PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+endif()
 
 add_library(core INTERFACE)
 add_library(mapnik::core ALIAS core)