[Beignet] [PATCH] Fix a makefile bug for gcc is not the default compiler

[Lv Meng]

Signed-off-by: Lv Meng <meng.lv at intel.com>
---
 CMakeLists.txt | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 49c8929..369aba7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,7 @@
 # compiler choose,now support ICC,GCC CLANG compiler
-set (COMPILER "GCC" CACHE INT "Compiler to choose on Linux (GCC,ICC,CLANG)")
 if (COMPILER STREQUAL "GCC")
+  find_program(CMAKE_C_COMPILER NAMES gcc)
+  find_program(CMAKE_CXX_COMPILER NAMES g++)
 elseif (COMPILER STREQUAL "CLANG")
   set (CMAKE_C_COMPILER   "clang")
   set (CMAKE_CXX_COMPILER "clang++")
@@ -19,7 +20,13 @@ set (LIBCL_DRIVER_VERSION_MAJOR 1)
 set (LIBCL_DRIVER_VERSION_MINOR 0)
 set (LIBCL_C_VERSION_MAJOR 1)
 set (LIBCL_C_VERSION_MINOR 2)
-
+if( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+  set(COMPILER "CLANG")
+elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+  set(COMPILER "GCC")
+elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel")
+  set(COMPILER "ICC")
+endif()
 configure_file (
   "src/OCLConfig.h.in"
   "src/OCLConfig.h"
-- 
1.9.1