diff -r 6790f1938cd9 -r 79c58ff0d4b1 cmake_modules/platform.cmake
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmake_modules/platform.cmake	Sat Jun 08 01:22:46 2013 +0200
@@ -0,0 +1,80 @@
+
+if(APPLE)
+    set(CMAKE_FIND_FRAMEWORK "FIRST")
+
+#what system are we building for
+    set(minimum_macosx_version $ENV{MACOSX_DEPLOYMENT_TARGET})
+
+#detect on which system we are: if sw_vers cannot be found for any reason (re)use minimum_macosx_version
+    find_program(sw_vers sw_vers)
+    if(sw_vers)
+        execute_process(COMMAND ${sw_vers} "-productVersion"
+                        OUTPUT_VARIABLE current_macosx_version
+                        OUTPUT_STRIP_TRAILING_WHITESPACE)
+        string(REGEX REPLACE "([0-9]+.[0-9]+).[0-9]+" "\\1" current_macosx_version ${current_macosx_version})
+    else()
+        if(NOT minimum_macosx_version)
+            message(FATAL_ERROR "sw_vers not found! Need explicit MACOSX_DEPLOYMENT_TARGET variable set")
+        else()
+            message(${WARNING} "sw_vers not found! Fallback to MACOSX_DEPLOYMENT_TARGET variable")
+            set(current_macosx_version ${minimum_macosx_version})
+        endif()
+    endif()
+
+#if nothing is set, we deploy only for the current system
+    if(NOT minimum_macosx_version)
+        set(minimum_macosx_version ${current_macosx_version})
+    endif()
+
+#lower systems don't have enough processing power anyway
+    if (minimum_macosx_version VERSION_LESS "10.4")
+        message(FATAL_ERROR "Hedgewars is not supported on Mac OS X pre-10.4")
+    endif()
+
+#workaround for http://playcontrol.net/ewing/jibberjabber/big_behind-the-scenes_chang.html#SDL_mixer (Update 2)
+    if(current_macosx_version VERSION_EQUAL "10.4")
+        find_package(SDL_mixer REQUIRED)
+        set(DYLIB_SMPEG "-dylib_file @loader_path/Frameworks/smpeg.framework/Versions/A/smpeg:${SDLMIXER_LIBRARY}/Versions/A/Frameworks/smpeg.framework/Versions/A/smpeg")
+        set(DYLIB_MIKMOD "-dylib_file @loader_path/Frameworks/mikmod.framework/Versions/A/mikmod:${SDLMIXER_LIBRARY}/Versions/A/Frameworks/mikmod.framework/Versions/A/mikmod")
+        set(CMAKE_C_FLAGS "${DYLIB_SMPEG} ${DYLIB_MIKMOD}")
+        list(APPEND pascal_flags "-k${DYLIB_SMPEG}" "-k${DYLIB_MIKMOD}")
+    endif()
+
+#CMAKE_OSX_ARCHITECTURES and CMAKE_OSX_SYSROOT need to be set for universal binary and correct linking
+    if(NOT CMAKE_OSX_ARCHITECTURES)
+        if(current_macosx_version VERSION_LESS "10.6")
+            if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "powerpc*")
+                set(CMAKE_OSX_ARCHITECTURES "ppc7400")
+            else()
+                set(CMAKE_OSX_ARCHITECTURES "i386")
+            endif()
+        else()
+            set(CMAKE_OSX_ARCHITECTURES "x86_64")
+        endif()
+    endif()
+
+#CMAKE_OSX_SYSROOT is set at the system version we are supposed to build on
+#we need to provide the correct one when host and target differ
+    if(NOT ${minimum_macosx_version} VERSION_EQUAL ${current_macosx_version})
+        if(minimum_macosx_version VERSION_EQUAL "10.4")
+            set(CMAKE_OSX_SYSROOT "/Developer/SDKs/MacOSX10.4u.sdk/")
+            set(CMAKE_C_COMPILER "/Developer/usr/bin/gcc-4.0")
+            set(CMAKE_CXX_COMPILER "/Developer/usr/bin/g++-4.0")
+        else()
+            string(REGEX REPLACE "([0-9]+.[0-9]+).[0-9]+" "\\1" sdk_version ${minimum_macosx_version})
+            set(CMAKE_OSX_SYSROOT "/Developer/SDKs/MacOSX${sdk_version}.sdk/")
+        endif()
+    endif()
+
+#add user framework directory, other paths can be passed via FPFLAGS
+    list(APPEND pascal_flags "-Ff~/Library/Frameworks")
+#set deployment target
+    list(APPEND pascal_flags "-k-macosx_version_min" "-k${minimum_macosx_version}" "-XR${CMAKE_OSX_SYSROOT}")
+
+endif(APPLE)
+
+if(WINDOWS)
+    #this flags prevents a few dll hell problems
+    set(CMAKE_C_FLAGS "-static-libgcc ${CMAKE_C_FLAGS}")
+endif(WINDOWS)
+