patch std::filesystem check as done in llnl/umpire pr#784 (#33250)

var/spack/repos/builtin/packages/umpire/package.py

@@ -54,6 +54,7 @@ class Umpire(CachedCMakePackage, CudaPackage, ROCmPackage):
     version("0.1.4", tag="v0.1.4", submodules=True)
     version("0.1.3", tag="v0.1.3", submodules=True)
 
+    patch("std-filesystem-pr784.patch", when="@2022.03.1 +rocm ^blt@0.5.2:")
     patch("camp_target_umpire_3.0.0.patch", when="@3.0.0")
     patch("cmake_version_check.patch", when="@4.1")
     patch("missing_header_for_numeric_limits.patch", when="@4.1:5.0.1")

var/spack/repos/builtin/packages/umpire/std-filesystem-pr784.patch

@@ -0,0 +1,33 @@
+diff -ruN spack-src/cmake/SetupCompilerFlags.cmake spack-src-patched/cmake/SetupCompilerFlags.cmake
+--- spack-src/cmake/SetupCompilerFlags.cmake	2022-10-12 08:05:03.538390165 -0700
++++ spack-src-patched/cmake/SetupCompilerFlags.cmake	2022-10-12 09:47:56.317645003 -0700
+@@ -11,20 +11,20 @@
+ 
+ message(STATUS "Checking for std::filesystem")
+ 
+-include(CheckCXXSourceCompiles)
+-check_cxx_source_compiles(
+-  "#include <iostream>
+-  #include <filesystem>
+-
+-  int main(int, char**)
+-  {
++blt_check_code_compiles(CODE_COMPILES UMPIRE_ENABLE_FILESYSTEM
++                        SOURCE_STRING
++[=[
++#include <iostream>
++#include <filesystem>
+ 
++int main(int, char**)
++{
+     auto path = std::filesystem::path(\".\");
+     (void)(path);
+ 
+     return 0;
+-  }"
+-  UMPIRE_ENABLE_FILESYSTEM)
++}
++]=])
+ 
+ if (UMPIRE_ENABLE_FILESYSTEM)
+   message(STATUS "std::filesystem found")