Adding cmake platform defines and detection.

Removed acl_compressor from android build for now.

CMakeLists.txt

@@ -5,6 +5,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake")
 
 include(CMakeUtils)
 include(CMakeCompiler)
+include(CMakePlatforms)
 
 set(USE_AVX_INSTRUCTIONS false CACHE BOOL "Use AVX instructions")
 set(CPU_INSTRUCTION_SET false CACHE STRING "CPU instruction set")
@@ -33,5 +34,7 @@ endif()
 enable_testing()
 
 # Add other projects
-add_subdirectory("${PROJECT_SOURCE_DIR}/tools/acl_compressor")
+if(PLATFORM_WINDOWS OR PLATFORM_OSX OR PLATFORM_LINUX)
+	add_subdirectory("${PROJECT_SOURCE_DIR}/tools/acl_compressor")
+endif()
 add_subdirectory("${PROJECT_SOURCE_DIR}/tests")

cmake/CMakePlatforms.cmake

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.2)
+
+# Detect which platform we have
+if( ${CMAKE_SYSTEM_NAME} STREQUAL "Windows" )
+	set(PLATFORM_WINDOWS 1)
+	set(PLATFORM_NAME "Windows")
+elseif( ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin" )
+	set(PLATFORM_OSX 1)
+	set(PLATFORM_NAME "OS X")
+elseif( ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" )
+	set(PLATFORM_LINUX 1)
+	set(PLATFORM_NAME "Linux")
+elseif( ${CMAKE_SYSTEM_NAME} STREQUAL "Android" )
+	set(PLATFORM_ANDROID 1)
+	set(PLATFORM_NAME "Android")
+else()
+	message(FATAL_ERROR "Unknown platform ${CMAKE_SYSTEM_NAME}!")
+endif()
+
+message(STATUS "Detected platform: ${PLATFORM_NAME}")