SWDEV-287830 - Remove hardcoding of /opt/rocm path from hip samples (#2391)

Change-Id: I4ffcb4d5afe329377aca63ae0a962c1dc567bfd8

samples/0_Intro/bit_extract/CMakeLists.txt

@@ -26,12 +26,16 @@ if(NOT DEFINED __HIP_ENABLE_PCH)
   set(__HIP_ENABLE_PCH ON CACHE BOOL "enable/disable pre-compiled hip headers")
 endif()
 
+if (NOT DEFINED ROCM_PATH )
+     set ( ROCM_PATH "/opt/rocm"  CACHE STRING "Default ROCM installation directory." )
+endif ()
+
 if(${__HIP_ENABLE_PCH})
   add_definitions(-D__HIP_ENABLE_PCH)
 endif()
 
 # Search for rocm in common locations
-list(APPEND CMAKE_PREFIX_PATH /opt/rocm/hip /opt/rocm)
+list(APPEND CMAKE_PREFIX_PATH ${ROCM_PATH}/hip ${ROCM_PATH})
 
 # Find hip
 find_package(hip)

samples/0_Intro/bit_extract/Makefile

@@ -20,7 +20,8 @@
 
 #Dependencies : [MYHIP]/bin must be in user's path.
 
-HIP_PATH?= $(wildcard /opt/rocm/hip)
+ROCM_PATH?= $(wildcard /opt/rocm/)
+HIP_PATH?= $(wildcard $(ROCM_PATH)/hip)
 ifeq (,$(HIP_PATH))
 	HIP_PATH=../../..
 endif