diff --git a/CMakeLists.txt b/CMakeLists.txt
index afcc6fc3..4ea3466d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,6 @@
 cmake_minimum_required(VERSION 3.0.2)
+set(CMAKE_C_FLAGS "-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -mmacosx-version-min=10.15")
+set(CMAKE_CXX_FLAGS "-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -mmacosx-version-min=10.15")
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
 if (${CMAKE_VERSION} VERSION_LESS "3.17.0")
@@ -54,7 +56,7 @@ if(WIN32)
   endif()
 endif()
 
-option(BUILD_SHARED_LIBS "Build shared libraries" ON)
+option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
 option(LIBZIP_DO_INSTALL "Install libzip and the related files" ON)
 
 option(SHARED_LIB_VERSIONNING "Add SO version in .so build" ON)