From d79e0379f2a600fa22d007e3a74149c6c541a09a Mon Sep 17 00:00:00 2001
From: Konstantin Podsvirov <konstantin@podsvirov.pro>
Date: Tue, 1 Sep 2015 15:00:00 +0300
Subject: Option for switching static runtime link policy with MSVC

---
 cmake/CMakeLists.txt | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

(limited to 'cmake/CMakeLists.txt')

diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 31a222d1..a9acf7e6 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -8,6 +8,7 @@ project(protobuf C CXX)
 option(protobuf_VERBOSE "Enable for verbose output" OFF)
 option(BUILD_TESTING "Build tests" ON)
 option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF)
+option(protobuf_MSVC_STATIC_RUNTIME "Link static runtime libraries" ON)
 if (MSVC)
   set(ZLIB_DEFAULT OFF)
 else (MSVC)
@@ -92,13 +93,15 @@ if (MSVC)
     # https://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx
     # This is achieved by replacing msvc option /MD with /MT and /MDd with /MTd
     # http://www.cmake.org/Wiki/CMake_FAQ#How_can_I_build_my_MSVC_application_with_a_static_runtime.3F
-    foreach(flag_var
-        CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
-        CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
-      if(${flag_var} MATCHES "/MD")
-        string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
-      endif(${flag_var} MATCHES "/MD")
-    endforeach(flag_var)
+    if (protobuf_MSVC_STATIC_RUNTIME)
+      foreach(flag_var
+          CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
+          CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+        if(${flag_var} MATCHES "/MD")
+          string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
+        endif(${flag_var} MATCHES "/MD")
+      endforeach(flag_var)
+    endif (protobuf_MSVC_STATIC_RUNTIME)
   endif (BUILD_SHARED_LIBS)
   add_definitions(/wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146 /wd4305)
 endif (MSVC)
-- 
cgit v1.2.3