From 79fb34a90bfc318ba73445e4db32f5693042493b Mon Sep 17 00:00:00 2001
From: OJ <oj@buffered.io>
Date: Wed, 15 Apr 2020 13:12:31 +1000
Subject: Add support for use of static MSVC runtimes
In certain contexts LibreSSL needs to be built with `/MT` instead of `/MD` for inclusion in other projects. These changes allow for the command-line option `USE_STATIC_MSVC_RUNTIMES` to be set to `ON` if the use wishes to generate projects that will build with static runtimes.
This feature requires CMAKE version 3.15+, hence the minimum required version has changed as well.
---
CMakeLists.txt | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e198f7c..a577d29 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.0)
+cmake_minimum_required (VERSION 3.15)
include(CheckFunctionExists)
include(CheckSymbolExists)
include(CheckLibraryExists)
@@ -9,6 +9,7 @@ set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}" ${CMAKE_MODULE_PATH})
include(cmake_export_symbol)
include(GNUInstallDirs)
+cmake_policy(SET CMP0091 NEW)
project (LibreSSL C ASM)
enable_testing()
@@ -36,6 +37,11 @@ option(ENABLE_EXTRATESTS "Enable extra tests that may be unreliable on some plat
option(ENABLE_NC "Enable installing TLS-enabled nc(1)" OFF)
set(OPENSSLDIR ${OPENSSLDIR} CACHE PATH "Set the default openssl directory" FORCE)
+option(USE_STATIC_MSVC_RUNTIMES "Use /MT instead of /MD in MSVC" OFF)
+if( USE_STATIC_MSVC_RUNTIMES )
+ set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+endif()
+
if(NOT LIBRESSL_SKIP_INSTALL)
set( ENABLE_LIBRESSL_INSTALL ON )
endif(NOT LIBRESSL_SKIP_INSTALL)
--
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