Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/polly/cmake/FindISL.cmake

@@ -0,0 +1,24 @@
+find_package(PkgConfig REQUIRED)
+pkg_search_module(ISL isl)
+if (NOT ISL_FOUND EQUAL 1)
+  message(FATAL_ERROR "No libisl found on this system. Consider setting PKG_CONFIG_PATH.")
+endif()
+
+add_library(ISL INTERFACE IMPORTED)
+foreach (incl IN LISTS ISL_INCLUDE_DIRS)
+  set_property(TARGET ISL APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${incl})
+endforeach()
+
+foreach (libname IN LISTS ISL_LIBRARIES)
+  if (ISL_LIBRARY_DIRS)
+    foreach (dir IN LISTS ISL_LIBRARY_DIRS)
+      list(APPEND hints  ${dir})
+    endforeach()
+  endif()
+  find_library(lib NAMES ${libname} HINTS ${hints} NO_DEFAULT_PATH)
+  set_property(TARGET ISL APPEND PROPERTY INTERFACE_LINK_LIBRARIES ${lib})
+endforeach()
+
+foreach (opt IN LISTS ISL_CFLAGS ISL_CFLAGS_OTHER)
+  set_property(TARGET ISL APPEND PROPERTY INTERFACE_COMPILE_OPTIONS ${opt})
+endforeach()