Samples & Test - Compiler Updates (#468)

* Compiler - set CXX Compiler if not set

* CXX Compiler - Set CXX compiler in CTest

* Test - Ctest cleanup

* Samples - Update CXX Compiler option

[ROCm/rocdecode commit: 924d19eb65]

projects/rocdecode/test/CMakeLists.txt

@@ -22,12 +22,6 @@
 # ##############################################################################
 cmake_minimum_required(VERSION 3.10)
 
-project(rocdecode-test)
-
-# make test with CTest
-enable_testing()
-include(CTest)
-
 if(NOT DEFINED ENHANCED_MESSAGE)
   string(ASCII 27 Esc)
   set(ColourReset "${Esc}[m")
@@ -46,6 +40,12 @@ else()
   set(ROCM_PATH /opt/rocm CACHE PATH "${White}${PROJECT_NAME}: Default ROCm installation path${ColourReset}")
 endif()
 
+project(rocdecode-test)
+
+# make test with CTest
+enable_testing()
+include(CTest)
+
 # add find modules
 list(APPEND CMAKE_MODULE_PATH ${ROCM_PATH}/share/rocdecode/cmake)