Use *_FOUND in CMake files

Fixes: #1192

Signed-off-by: Lukasz Dorau <[email protected]>

Author: ldorau

CMakeLists.txt

@@ -263,7 +263,7 @@ if(NOT UMF_DISABLE_HWLOC AND (NOT UMF_LINK_HWLOC_STATICALLY))
     pkg_check_modules(LIBHWLOC hwloc>=2.3.0)
     if(NOT LIBHWLOC_FOUND)
         find_package(LIBHWLOC 2.3.0 COMPONENTS hwloc)
-        if(LIBHWLOC_LIBRARIES)
+        if(LIBHWLOC_FOUND)
             set(LIBHWLOC_AVAILABLE TRUE)
         endif()
     endif()
@@ -444,7 +444,7 @@ if(UMF_BUILD_LEVEL_ZERO_PROVIDER)
     endif()
     message(STATUS "LEVEL_ZERO_INCLUDE_DIRS = ${LEVEL_ZERO_INCLUDE_DIRS}")
 
-    if(ZE_LOADER_LIBRARIES)
+    if(ZE_LOADER_FOUND)
         set(UMF_LEVEL_ZERO_ENABLED TRUE)
     else()
         message(
@@ -500,7 +500,7 @@ if(UMF_BUILD_CUDA_PROVIDER)
     endif()
     message(STATUS "CUDA_INCLUDE_DIRS = ${CUDA_INCLUDE_DIRS}")
 
-    if(CUDA_LIBRARIES)
+    if(CUDA_FOUND)
         set(UMF_CUDA_ENABLED TRUE)
     else()
         message(

test/CMakeLists.txt

@@ -674,7 +674,7 @@ if(LINUX
         )
     endif()
 
-    if(LIBNUMA_LIBRARIES)
+    if(LIBNUMA_FOUND)
         set(EXAMPLES ${EXAMPLES} memspace_hmat memspace_numa)
     else()
         message(