SWDEV-273235 - Allow explicitly disabling LF support

Currently LiquidFlash cannot be supported from Github Enterprise,
hence we need to be able to build with out it.

Allow this by setting -DWITH_LIQUID_FLASH=0.

Change-Id: I975e8ee16b7ba033e3eb95fe40955d8c1d4779b7


[ROCm/clr commit: 7034e749e3]

projects/clr/rocclr/platform/context.cpp

@@ -34,14 +34,13 @@
 #include "CL/cl_dx9_media_sharing.h"
 #endif  //_WIN32
 
+#ifndef WITH_LIQUID_FLASH
 #if (!defined(BUILD_HSA_TARGET) && defined(WITH_HSA_DEVICE) && \
       defined(WITH_AMDGPU_PRO)) || defined(_WIN32)
 #define WITH_LIQUID_FLASH 1
-#endif
-
-#ifdef WITH_LIQUID_FLASH 
 #include "lf.h"
 #endif
+#endif
 
 namespace amd {
 
@@ -98,7 +97,7 @@ Context::~Context() {
     glenv_ = NULL;
   }
 
-#ifdef WITH_LIQUID_FLASH 
+#if WITH_LIQUID_FLASH
   lfTerminate();
 #endif
 }
@@ -275,7 +274,7 @@ int Context::create(const intptr_t* properties) {
     }
   }
 
-#ifdef WITH_LIQUID_FLASH 
+#if WITH_LIQUID_FLASH
   lfInit();
 #endif