fix for HWLOC security patch on Linux

Author: bratpiorka

CMakeLists.txt

@@ -131,12 +131,6 @@ else()
         set(HWLOC_ENABLE_TESTING OFF)
         set(HWLOC_SKIP_LSTOPO ON)
         set(HWLOC_SKIP_TOOLS ON)
-        set(HWLOC_PATCH
-            git
-            apply
-            ${PROJECT_SOURCE_DIR}/cmake/fix_coverity_issues.patch
-            ||
-            (exit 0))
 
         message(
             STATUS
@@ -147,23 +141,16 @@ else()
             hwloc_targ
             GIT_REPOSITORY ${UMF_HWLOC_REPO}
             GIT_TAG ${UMF_HWLOC_TAG}
-            PATCH_COMMAND ${HWLOC_PATCH} SOURCE_SUBDIR contrib/windows-cmake/
-                          FIND_PACKAGE_ARGS)
+            SOURCE_SUBDIR contrib/windows-cmake/
+            FIND_PACKAGE_ARGS)
         FetchContent_MakeAvailable(hwloc_targ)
 
         set(LIBHWLOC_INCLUDE_DIRS
             ${hwloc_targ_SOURCE_DIR}/include;${hwloc_targ_BINARY_DIR}/include)
         set(LIBHWLOC_LIBRARY_DIRS
             ${hwloc_targ_BINARY_DIR}/Release;${hwloc_targ_BINARY_DIR}/Debug)
-    else()
+    else() # NOT WINDOWS
         include(FetchContent)
-        set(HWLOC_PATCH
-            git
-            apply
-            ${PROJECT_SOURCE_DIR}/cmake/fix_coverity_issues.patch
-            ||
-            (exit 0))
-
         message(
             STATUS
                 "Will fetch hwloc from ${UMF_HWLOC_REPO} (tag: ${UMF_HWLOC_TAG})"
@@ -172,8 +159,7 @@ else()
         FetchContent_Declare(
             hwloc_targ
             GIT_REPOSITORY ${UMF_HWLOC_REPO}
-            GIT_TAG ${UMF_HWLOC_TAG}
-            PATCH_COMMAND ${HWLOC_PATCH})
+            GIT_TAG ${UMF_HWLOC_TAG})
         FetchContent_MakeAvailable(hwloc_targ)
 
         add_custom_command(
@@ -217,6 +203,21 @@ else()
     message(STATUS "    LIBHWLOC_LIBRARY_DIRS = ${LIBHWLOC_LIBRARY_DIRS}")
 endif()
 
+if (hwloc_targ_SOURCE_DIR)
+    # apply security patch for HWLOC
+    execute_process(COMMAND git apply ${PROJECT_SOURCE_DIR}/cmake/fix_coverity_issues.patch
+            WORKING_DIRECTORY ${hwloc_targ_SOURCE_DIR}
+            OUTPUT_VARIABLE UMF_HWLOC_PATCH_OUTPUT
+            ERROR_VARIABLE UMF_HWLOC_PATCH_ERROR)
+    
+    if (UMF_HWLOC_PATCH_OUTPUT)
+        message(STATUS "HWLOC patch:\n${UMF_HWLOC_PATCH_OUTPUT}")
+    endif()
+    if (UMF_HWLOC_PATCH_ERROR)
+        message(WARNING "HWLOC patch:\n${UMF_HWLOC_PATCH_ERROR}")
+    endif()
+endif()
+
 # This build type check is not possible on Windows when CMAKE_BUILD_TYPE is not
 # set, because in this case the build type is determined after a CMake
 # configuration is done (at the build time)