Build: Cmake build system

 -- Cmake based build system
 -- Only armclang supported currently

Change-Id: I162357439bb1c871cba3a1c614822ef0b7a73e89
Signed-off-by: Abhishek Pandit <abhishek.pandit@arm.com>
diff --git a/cmake/Compiler/ARMClang.cmake b/cmake/Compiler/ARMClang.cmake
new file mode 100644
index 0000000..5390a98
--- /dev/null
+++ b/cmake/Compiler/ARMClang.cmake
@@ -0,0 +1,47 @@
+#-------------------------------------------------------------------------------
+# Copyright (c) 2017, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#-------------------------------------------------------------------------------
+
+if(_ARMCCLANG_CMAKE_LOADED)
+  return()
+endif()
+set(_ARMCCLANG_CMAKE_LOADED TRUE)
+
+get_filename_component(_CMAKE_C_TOOLCHAIN_LOCATION "${CMAKE_C_COMPILER}" PATH)
+get_filename_component(_CMAKE_CXX_TOOLCHAIN_LOCATION "${CMAKE_CXX_COMPILER}" PATH)
+
+set(CMAKE_EXECUTABLE_SUFFIX ".axf")
+
+find_program(CMAKE_ARMCCLANG_LINKER armlink HINTS "${_CMAKE_C_TOOLCHAIN_LOCATION}" "${_CMAKE_CXX_TOOLCHAIN_LOCATION}" )
+find_program(CMAKE_ARMCCLANG_AR     armar   HINTS "${_CMAKE_C_TOOLCHAIN_LOCATION}" "${_CMAKE_CXX_TOOLCHAIN_LOCATION}" )
+
+set(CMAKE_LINKER "${CMAKE_ARMCCLANG_LINKER}" CACHE FILEPATH "The ARMCC linker" FORCE)
+mark_as_advanced(CMAKE_ARMCCLANG_LINKER)
+set(CMAKE_AR "${CMAKE_ARMCCLANG_AR}" CACHE FILEPATH "The ARMCC archiver" FORCE)
+mark_as_advanced(CMAKE_ARMCCLANG_AR)
+
+macro(__compiler_armclang lang)
+  if(NOT CMAKE_${lang}_FLAGS_SET)
+    set(CMAKE_${lang}_FLAGS_SET TRUE)
+    string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
+    string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g -O0")
+    string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Oz -DNDEBUG")
+    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3 -DNDEBUG")
+    string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O3 -g")
+
+    set(CMAKE_${lang}_OUTPUT_EXTENSION ".o")
+    set(CMAKE_${lang}_OUTPUT_EXTENSION_REPLACE 1)
+    set(CMAKE_STATIC_LIBRARY_PREFIX_${lang} "")
+    set(CMAKE_STATIC_LIBRARY_SUFFIX_${lang} ".a")
+
+    set(CMAKE_${lang}_LINK_EXECUTABLE      "<CMAKE_LINKER> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <LINK_LIBRARIES> <OBJECTS> -o <TARGET> --list <TARGET_BASE>.map")
+    set(CMAKE_${lang}_CREATE_STATIC_LIBRARY  "<CMAKE_AR> --create -cr <TARGET> <LINK_FLAGS> <OBJECTS>")
+    set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
+    set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
+
+    set(CMAKE_DEPFILE_FLAGS_${lang} "--depend=<DEPFILE> --depend_single_line --no_depend_system_headers")
+  endif()
+endmacro()