Merge topic 'fix-findmpi-lib-regex'

bab4bc5f FindMPI: Fix libname regex to not match the compiler executable
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1952

Modules/FindMPI.cmake

@@ -352,6 +352,9 @@ function (_MPI_check_compiler LANG QUERY_FLAG OUTPUT_VARIABLE RESULT_VARIABLE)
   # Ensure that no error output might be passed upwards.
   if(NOT WRAPPER_RETURN EQUAL 0)
     unset(WRAPPER_OUTPUT)
+  else()
+    # Strip leading whitespace
+    string(REGEX REPLACE "^ +" "" WRAPPER_OUTPUT "${WRAPPER_OUTPUT}")
   endif()
   set(${OUTPUT_VARIABLE} "${WRAPPER_OUTPUT}" PARENT_SCOPE)
   set(${RESULT_VARIABLE} "${WRAPPER_RETURN}" PARENT_SCOPE)
@@ -715,20 +718,20 @@ function (_MPI_interrogate_compiler LANG)
   # or shared libraries if there aren't any import libraries in use on the system.
   # Note that we do not consider CMAKE_<TYPE>_LIBRARY_PREFIX intentionally here: The linker will for a given file
   # decide how to link it based on file type, not based on a prefix like 'lib'.
-  set(_MPI_LIB_NAME_REGEX "[^\" ]+${CMAKE_STATIC_LIBRARY_SUFFIX}|\"[^\"]+${CMAKE_STATIC_LIBRARY_SUFFIX}\"")
+  set(_MPI_LIB_SUFFIX_REGEX "${CMAKE_STATIC_LIBRARY_SUFFIX}")
   if(DEFINED CMAKE_IMPORT_LIBRARY_SUFFIX)
     if(NOT ("${CMAKE_IMPORT_LIBRARY_SUFFIX}" STREQUAL "${CMAKE_STATIC_LIBRARY_SUFFIX}"))
-      string(APPEND _MPI_LIB_NAME_REGEX "[^\" ]+${CMAKE_IMPORT_LIBRARY_SUFFIX}|\"[^\"]+${CMAKE_IMPORT_LIBRARY_SUFFIX}\"")
+      string(APPEND _MPI_SUFFIX_REGEX "|${CMAKE_IMPORT_LIBRARY_SUFFIX}")
     endif()
   else()
-    string(APPEND _MPI_LIB_NAME_REGEX "[^\" ]+${CMAKE_SHARED_LIBRARY_SUFFIX}|\"[^\"]+${CMAKE_SHARED_LIBRARY_SUFFIX}\"")
+    string(APPEND _MPI_LIB_SUFFIX_REGEX "|${CMAKE_SHARED_LIBRARY_SUFFIX}")
   endif()
+  set(_MPI_LIB_NAME_REGEX "(([^\" ]+(${_MPI_LIB_SUFFIX_REGEX}))|(\"[^\"]+(${_MPI_LIB_SUFFIX_REGEX})\"))( +|$)")
   string(REPLACE "." "\\." _MPI_LIB_NAME_REGEX "${_MPI_LIB_NAME_REGEX}")
 
-  string(REGEX MATCHALL "(^| )(${_MPI_LIB_NAME_REGEX})" MPI_LIBNAMES "${MPI_LINK_CMDLINE}")
+  string(REGEX MATCHALL "${_MPI_LIB_NAME_REGEX}" MPI_LIBNAMES "${MPI_LINK_CMDLINE}")
   foreach(_MPI_LIB_NAME IN LISTS MPI_LIBNAMES)
-    string(REGEX REPLACE "^ " "" _MPI_LIB_NAME "${_MPI_LIB_NAME}")
-    string(REPLACE "\"" "" _MPI_LIB_NAME "${_MPI_LIB_NAME}")
+    string(REGEX REPLACE "^ +\"?|\"? +$" "" _MPI_LIB_NAME "${_MPI_LIB_NAME}")
     get_filename_component(_MPI_LIB_PATH "${_MPI_LIB_NAME}" DIRECTORY)
     if(NOT "${_MPI_LIB_PATH}" STREQUAL "")
       list(APPEND MPI_LIB_FULLPATHS_WORK "${_MPI_LIB_NAME}")