cmark

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,12 +1,5 @@
-cmake_minimum_required(VERSION 2.8.9)
-
-# prevent ugly developer warnings because version is set directly, not through project()
-# it should be redone properly by using VERSION in project() if on CMake 3.x
-if(CMAKE_MAJOR_VERSION GREATER 2)
-    cmake_policy(SET CMP0048 OLD)
-endif()
-
-project(cmark)
+cmake_minimum_required(VERSION 3.0)
+project(cmark VERSION 0.28.3)
 
 include("FindAsan.cmake")
 
@@ -14,13 +7,6 @@ if("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
     message(FATAL_ERROR "Do not build in-source.\nPlease remove CMakeCache.txt and the CMakeFiles/ directory.\nThen: mkdir build ; cd build ; cmake .. ; make")
 endif()
 
-set(PROJECT_NAME "cmark")
-
-set(PROJECT_VERSION_MAJOR 0)
-set(PROJECT_VERSION_MINOR 28)
-set(PROJECT_VERSION_PATCH 3)
-set(PROJECT_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH} )
-
 option(CMARK_TESTS "Build cmark tests and enable testing" ON)
 option(CMARK_STATIC "Build static libcmark library" ON)
 option(CMARK_SHARED "Build shared libcmark library" ON)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
@@ -59,7 +59,6 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmark_version.h.in
 include (GenerateExportHeader)
 
 add_executable(${PROGRAM} ${PROGRAM_SOURCES})
-add_compiler_export_flags()
 
 # Disable the PUBLIC declarations when compiling the executable:
 set_target_properties(${PROGRAM} PROPERTIES
@@ -72,12 +71,9 @@ set(CMAKE_LINKER_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG}")
 set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE} -pg")
 set(CMAKE_LINKER_PROFILE "${CMAKE_LINKER_FLAGS_RELEASE} -pg")
 
-if (${CMAKE_VERSION} VERSION_GREATER "1.8")
-  set(CMAKE_C_VISIBILITY_PRESET hidden)
-  set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
-elseif(CMAKE_COMPILER_IS_GNUCC OR ${CMAKE_C_COMPILER_ID} STREQUAL "Clang")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden")
-endif ()
+# -fvisibility=hidden
+set(CMAKE_C_VISIBILITY_PRESET hidden)
+set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
 
 if (CMARK_SHARED)
   add_library(${LIBRARY} SHARED ${LIBRARY_SOURCES})