CMake: Warn if no build-type is selected.

3 months ago · e37a1a8345
parent f7ab6e4373
commit e37a1a8345
1 changed files with 8 additions and 1 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.9)

 project(zlib
    LANGUAGES C
@ -13,6 +13,13 @@ if(WIN32)
    option(ZLIB_INSTALL_COMPAT_DLL "Install a copy as zlib1.dll" ON)
 endif(WIN32)

+get_property(IS_MULTI GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+
+if(NOT DEFINED CMAKE_BUILD_TYPE AND NOT IS_MULTI)
+    message(STATUS "No CMAKE_BUILD_TYPE set -- using Release")
+    set(CMAKE_BUILD_TYPE Release)
+endif(NOT DEFINED CMAKE_BUILD_TYPE AND NOT IS_MULTI)
+
 include(CheckTypeSize)
 include(CheckFunctionExists)
 include(CheckIncludeFile)