TRILAB-142 Change minimum CMake version to 3.12

5 files changed, 121 insertions, 114 deletions

diff --git a/config/cmake_ext_mod/FindSZIP.cmake b/config/cmake_ext_mod/FindSZIP.cmake
index 2303d6d..8f882b4 100644
--- a/config/cmake_ext_mod/FindSZIP.cmake
+++ b/config/cmake_ext_mod/FindSZIP.cmake
@@ -51,7 +51,7 @@ find_path(SZIP_INCLUDE_DIR szlib.h)
 
 set(szip_names ${SZIP_NAMES} sz szip szip-static libsz libszip libszip-static)
 foreach(name ${szip_names})
-  list(APPEND szip_names_debug "${name}d")
+  list (APPEND szip_names_debug "${name}d")
 endforeach()
 
 if(NOT SZIP_LIBRARY)
diff --git a/config/cmake_ext_mod/HDFMacros.cmake b/config/cmake_ext_mod/HDFMacros.cmake
index d1d9a6c..fee6def 100644
--- a/config/cmake_ext_mod/HDFMacros.cmake
+++ b/config/cmake_ext_mod/HDFMacros.cmake
@@ -82,10 +82,8 @@ macro (INSTALL_TARGET_PDB libtarget targetdestination targetcomponent)
       set (targetfilename $<TARGET_FILE_DIR:${libtarget}>/${target_name}.pdb)
     endif ()
     install (
-      FILES
-          ${targetfilename}
-      DESTINATION
-          ${targetdestination}
+      FILES ${targetfilename}
+      DESTINATION ${targetdestination}
       CONFIGURATIONS Debug RelWithDebInfo
       COMPONENT ${targetcomponent}
       OPTIONAL
@@ -97,10 +95,8 @@ endmacro ()
 macro (INSTALL_PROGRAM_PDB progtarget targetdestination targetcomponent)
   if (WIN32 AND MSVC)
     install (
-      FILES
-          $<TARGET_PDB_FILE:${progtarget}>
-      DESTINATION
-          ${targetdestination}
+      FILES $<TARGET_PDB_FILE:${progtarget}>
+      DESTINATION ${targetdestination}
       CONFIGURATIONS Debug RelWithDebInfo
       COMPONENT ${targetcomponent}
       OPTIONAL
@@ -123,18 +119,12 @@ macro (HDF_SET_LIB_OPTIONS libtarget libname libtype)
     endif ()
   endif ()
 
-  set_target_properties (${libtarget}
-      PROPERTIES
-         OUTPUT_NAME
-               ${LIB_RELEASE_NAME}
-#         OUTPUT_NAME_DEBUG
-#               ${LIB_DEBUG_NAME}
-         OUTPUT_NAME_RELEASE
-               ${LIB_RELEASE_NAME}
-         OUTPUT_NAME_MINSIZEREL
-               ${LIB_RELEASE_NAME}
-         OUTPUT_NAME_RELWITHDEBINFO
-               ${LIB_RELEASE_NAME}
+  set_target_properties (${libtarget} PROPERTIES
+      OUTPUT_NAME                ${LIB_RELEASE_NAME}
+#      OUTPUT_NAME_DEBUG          ${LIB_DEBUG_NAME}
+      OUTPUT_NAME_RELEASE        ${LIB_RELEASE_NAME}
+      OUTPUT_NAME_MINSIZEREL     ${LIB_RELEASE_NAME}
+      OUTPUT_NAME_RELWITHDEBINFO ${LIB_RELEASE_NAME}
   )
   #get_property (target_name TARGET ${libtarget} PROPERTY OUTPUT_NAME)
   #get_property (target_name_debug TARGET ${libtarget} PROPERTY OUTPUT_NAME_DEBUG)
@@ -143,8 +133,7 @@ macro (HDF_SET_LIB_OPTIONS libtarget libname libtype)
 
   if (${libtype} MATCHES "STATIC")
     if (WIN32)
-      set_target_properties (${libtarget}
-          PROPERTIES
+      set_target_properties (${libtarget} PROPERTIES
           COMPILE_PDB_NAME_DEBUG          ${LIB_DEBUG_NAME}
           COMPILE_PDB_NAME_RELEASE        ${LIB_RELEASE_NAME}
           COMPILE_PDB_NAME_MINSIZEREL     ${LIB_RELEASE_NAME}
@@ -156,8 +145,7 @@ macro (HDF_SET_LIB_OPTIONS libtarget libname libtype)
 
   #----- Use MSVC Naming conventions for Shared Libraries
   if (MINGW AND ${libtype} MATCHES "SHARED")
-    set_target_properties (${libtarget}
-        PROPERTIES
+    set_target_properties (${libtarget} PROPERTIES
         IMPORT_SUFFIX ".lib"
         IMPORT_PREFIX ""
         PREFIX ""
diff --git a/config/cmake_ext_mod/HDFUseFortran.cmake b/config/cmake_ext_mod/HDFUseFortran.cmake
index 1cce918..b0f3972 100644
--- a/config/cmake_ext_mod/HDFUseFortran.cmake
+++ b/config/cmake_ext_mod/HDFUseFortran.cmake
@@ -16,6 +16,11 @@
 enable_language (Fortran)
 set (HDF_PREFIX "H5")
 
+if (NOT CMAKE_VERSION VERSION_LESS "3.14.0")
+  include (CheckFortranSourceRuns)
+  include (CheckFortranSourceCompiles)
+endif ()
+
 #-------------------------------------------------------------------------------
 #  Fix Fortran flags if we are compiling staticly on Windows using
 #  Windows_MT.cmake from config/cmake/UserMacros
@@ -42,71 +47,15 @@ file (STRINGS ${CMAKE_BINARY_DIR}/FCMangle.h CONTENTS REGEX "H5_FC_GLOBAL_\\(.*,
 string (REGEX MATCH "H5_FC_GLOBAL_\\(.*,.*\\) +(.*)" RESULT ${CONTENTS})
 set (H5_FC_FUNC_ "H5_FC_FUNC_(name,NAME) ${CMAKE_MATCH_1}")
 
-#-----------------------------------------------------------------------------
-# The provided CMake Fortran macros don't provide a general check function
-# so this one is used for a sizeof test.
-#-----------------------------------------------------------------------------
-macro (CHECK_FORTRAN_FEATURE FUNCTION CODE VARIABLE)
-    message (STATUS "Testing Fortran ${FUNCTION}")
-    if (HDF5_REQUIRED_LIBRARIES)
-      set (CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
-          "-DLINK_LIBRARIES:STRING=${HDF5_REQUIRED_LIBRARIES}")
-    else ()
-      set (CHECK_FUNCTION_EXISTS_ADD_LIBRARIES)
-    endif ()
-    file (WRITE
-        ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f90
-        "${CODE}"
-    )
-    TRY_COMPILE (RESULT_VAR
-        ${CMAKE_BINARY_DIR}
-        ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f90
-        CMAKE_FLAGS "${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}"
-        OUTPUT_VARIABLE OUTPUT
-    )
-
-#    message (STATUS "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ")
-#    message (STATUS "Test result ${OUTPUT}")
-#    message (STATUS "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ")
-
-    if (${RESULT_VAR})
-      set (${VARIABLE} 1 CACHE INTERNAL "Have Fortran function ${FUNCTION}")
-      message (STATUS "Testing Fortran ${FUNCTION} - OK")
-      file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
-          "Determining if the Fortran ${FUNCTION} exists passed with the following output:\n"
-          "${OUTPUT}\n\n"
-      )
-    else ()
-      message (STATUS "Testing Fortran ${FUNCTION} - Fail")
-      set (${VARIABLE} 0 CACHE INTERNAL "Have Fortran function ${FUNCTION}")
-      file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
-          "Determining if the Fortran ${FUNCTION} exists failed with the following output:\n"
-          "${OUTPUT}\n\n")
-    endif ()
-endmacro ()
-
-#-----------------------------------------------------------------------------
-# Configure Checks which require Fortran compilation must go in here
-# not in the main ConfigureChecks.cmake files, because if the user has
-# no Fortran compiler, problems arise.
-#
-# Be careful with leading spaces here, do not remove them.
-#-----------------------------------------------------------------------------
-
-# Check for Non-standard extension intrinsic function SIZEOF
-set (${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF FALSE)
-CHECK_FORTRAN_FEATURE(sizeof
+#test code source
+set (SIZEOF_CODE
   "
        PROGRAM main
        i = sizeof(x)
        END PROGRAM
   "
-  ${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF
 )
-
-# Check for F2008 standard intrinsic function C_SIZEOF
-set (${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF FALSE)
-CHECK_FORTRAN_FEATURE(c_sizeof
+set (C_SIZEOF_CODE
   "
        PROGRAM main
          USE ISO_C_BINDING
@@ -115,11 +64,8 @@ CHECK_FORTRAN_FEATURE(c_sizeof
          result = c_sizeof(a)
        END PROGRAM
   "
-  ${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF
 )
-
-# Check for F2008 standard intrinsic function STORAGE_SIZE
-CHECK_FORTRAN_FEATURE(storage_size
+set (STORAGE_SIZE_CODE
   "
        PROGRAM main
          INTEGER :: a
@@ -127,22 +73,15 @@ CHECK_FORTRAN_FEATURE(storage_size
          result = storage_size(a)
        END PROGRAM
   "
-  ${HDF_PREFIX}_FORTRAN_HAVE_STORAGE_SIZE
 )
-
-# Check for F2008 standard intrinsic module "ISO_FORTRAN_ENV"
-set (${HDF_PREFIX}_HAVE_ISO_FORTRAN_ENV FALSE)
-CHECK_FORTRAN_FEATURE(ISO_FORTRAN_ENV
+set (ISO_FORTRAN_ENV_CODE
   "
        PROGRAM main
          USE, INTRINSIC :: ISO_FORTRAN_ENV
        END PROGRAM
   "
-  ${HDF_PREFIX}_HAVE_ISO_FORTRAN_ENV
 )
-
-set (${HDF_PREFIX}_FORTRAN_DEFAULT_REAL_NOT_DOUBLE FALSE)
-CHECK_FORTRAN_FEATURE(RealIsNotDouble
+set (REALISNOTDOUBLE_CODE
   "
        MODULE type_mod
          INTERFACE h5t
@@ -165,14 +104,8 @@ CHECK_FORTRAN_FEATURE(RealIsNotDouble
          CALL h5t(d)
        END PROGRAM main
   "
-  ${HDF_PREFIX}_FORTRAN_DEFAULT_REAL_NOT_DOUBLE
 )
-
-#-----------------------------------------------------------------------------
-# Checks if the ISO_C_BINDING module meets all the requirements
-#-----------------------------------------------------------------------------
-set (${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING FALSE)
-CHECK_FORTRAN_FEATURE(iso_c_binding
+set (ISO_C_BINDING_CODE
   "
        PROGRAM main
             USE iso_c_binding
@@ -184,9 +117,95 @@ CHECK_FORTRAN_FEATURE(iso_c_binding
             ptr = C_LOC(ichr(1:1))
        END PROGRAM
   "
-  ${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING
 )
 
+if (NOT CMAKE_VERSION VERSION_LESS "3.14.0")
+  if (HDF5_REQUIRED_LIBRARIES)
+    set (CMAKE_REQUIRED_LIBRARIES "${HDF5_REQUIRED_LIBRARIES}")
+  endif ()
+  check_fortran_source_compiles (${SIZEOF_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF SRC_EXT f90)
+  check_fortran_source_compiles (${C_SIZEOF_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF SRC_EXT f90)
+  check_fortran_source_compiles (${STORAGE_SIZE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_STORAGE_SIZE SRC_EXT f90)
+  check_fortran_source_compiles (${ISO_FORTRAN_ENV_CODE} ${HDF_PREFIX}_HAVE_ISO_FORTRAN_ENV SRC_EXT f90)
+  check_fortran_source_compiles (${REALISNOTDOUBLE_CODE} ${HDF_PREFIX}_FORTRAN_DEFAULT_REAL_NOT_DOUBLE SRC_EXT f90)
+  check_fortran_source_compiles (${ISO_C_BINDING_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING SRC_EXT f90)
+else ()
+  #-----------------------------------------------------------------------------
+  # The provided CMake Fortran macros don't provide a general check function
+  # so this one is used for a sizeof test.
+  #-----------------------------------------------------------------------------
+  macro (CHECK_FORTRAN_FEATURE FUNCTION CODE VARIABLE)
+      message (STATUS "Testing Fortran ${FUNCTION}")
+      if (HDF5_REQUIRED_LIBRARIES)
+        set (CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
+            "-DLINK_LIBRARIES:STRING=${HDF5_REQUIRED_LIBRARIES}")
+      else ()
+        set (CHECK_FUNCTION_EXISTS_ADD_LIBRARIES)
+      endif ()
+      file (WRITE
+          ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f90
+          "${CODE}"
+      )
+      TRY_COMPILE (RESULT_VAR
+          ${CMAKE_BINARY_DIR}
+          ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f90
+          CMAKE_FLAGS "${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}"
+          OUTPUT_VARIABLE OUTPUT
+      )
+
+  #    message (STATUS "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ")
+  #    message (STATUS "Test result ${OUTPUT}")
+  #    message (STATUS "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ")
+
+      if (${RESULT_VAR})
+        set (${VARIABLE} 1 CACHE INTERNAL "Have Fortran function ${FUNCTION}")
+        message (STATUS "Testing Fortran ${FUNCTION} - OK")
+        file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+            "Determining if the Fortran ${FUNCTION} exists passed with the following output:\n"
+            "${OUTPUT}\n\n"
+        )
+      else ()
+        message (STATUS "Testing Fortran ${FUNCTION} - Fail")
+        set (${VARIABLE} 0 CACHE INTERNAL "Have Fortran function ${FUNCTION}")
+        file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+            "Determining if the Fortran ${FUNCTION} exists failed with the following output:\n"
+            "${OUTPUT}\n\n")
+      endif ()
+  endmacro ()
+
+  #-----------------------------------------------------------------------------
+  # Configure Checks which require Fortran compilation must go in here
+  # not in the main ConfigureChecks.cmake files, because if the user has
+  # no Fortran compiler, problems arise.
+  #
+  # Be careful with leading spaces here, do not remove them.
+  #-----------------------------------------------------------------------------
+
+  # Check for Non-standard extension intrinsic function SIZEOF
+  set (${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF FALSE)
+  CHECK_FORTRAN_FEATURE(${SIZEOF_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_SIZEOF)
+
+  # Check for F2008 standard intrinsic function C_SIZEOF
+  set (${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF FALSE)
+  CHECK_FORTRAN_FEATURE(${C_SIZEOF_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF)
+
+  # Check for F2008 standard intrinsic function STORAGE_SIZE
+  CHECK_FORTRAN_FEATURE(${STORAGE_SIZE_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_STORAGE_SIZE)
+
+  # Check for F2008 standard intrinsic module "ISO_FORTRAN_ENV"
+  set (${HDF_PREFIX}_HAVE_ISO_FORTRAN_ENV FALSE)
+  CHECK_FORTRAN_FEATURE(${ISO_FORTRAN_ENV_CODE} ${HDF_PREFIX}_HAVE_ISO_FORTRAN_ENV)
+
+  set (${HDF_PREFIX}_FORTRAN_DEFAULT_REAL_NOT_DOUBLE FALSE)
+  CHECK_FORTRAN_FEATURE(${REALISNOTDOUBLE_CODE} ${HDF_PREFIX}_FORTRAN_DEFAULT_REAL_NOT_DOUBLE)
+
+  #-----------------------------------------------------------------------------
+  # Checks if the ISO_C_BINDING module meets all the requirements
+  #-----------------------------------------------------------------------------
+  set (${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING FALSE)
+  CHECK_FORTRAN_FEATURE(${ISO_C_BINDING_CODE} ${HDF_PREFIX}_FORTRAN_HAVE_ISO_C_BINDING)
+endif ()
+
 #-----------------------------------------------------------------------------
 # Add debug information (intel Fortran : JB)
 #-----------------------------------------------------------------------------
diff --git a/config/cmake_ext_mod/grepTest.cmake b/config/cmake_ext_mod/grepTest.cmake
index c65c951..b011ae8 100644
--- a/config/cmake_ext_mod/grepTest.cmake
+++ b/config/cmake_ext_mod/grepTest.cmake
@@ -87,7 +87,7 @@ if (TEST_ERRREF)
   # if the .err file exists grep the error output with the error reference before comparing stdout
   if (EXISTS "${TEST_FOLDER}/${TEST_OUTPUT}.err")
     file (READ ${TEST_FOLDER}/${TEST_OUTPUT}.err TEST_ERR_STREAM)
-    list(LENGTH TEST_ERR_STREAM test_len)
+    list (LENGTH TEST_ERR_STREAM test_len)
     if (test_len GREATER 0)
       # TEST_ERRREF should always be matched
       string (REGEX MATCH "${TEST_ERRREF}" TEST_MATCH ${TEST_ERR_STREAM})
@@ -103,7 +103,7 @@ if (TEST_ERRREF)
   if (NOT TEST_SKIP_COMPARE)
     if (EXISTS "${TEST_FOLDER}/${TEST_REFERENCE}")
       file (READ ${TEST_FOLDER}/${TEST_REFERENCE} TEST_STREAM)
-      list(LENGTH TEST_STREAM test_len)
+      list (LENGTH TEST_STREAM test_len)
       if (test_len GREATER 0)
         if (WIN32 OR MINGW)
           configure_file(${TEST_FOLDER}/${TEST_REFERENCE} ${TEST_FOLDER}/${TEST_REFERENCE}.tmp NEWLINE_STYLE CRLF)
@@ -116,7 +116,7 @@ if (TEST_ERRREF)
         if (NOT TEST_SORT_COMPARE)
           # now compare the output with the reference
           execute_process (
-              COMMAND ${CMAKE_COMMAND} -E compare_files ${TEST_FOLDER}/${TEST_OUTPUT} ${TEST_FOLDER}/${TEST_REFERENCE}
+              COMMAND ${CMAKE_COMMAND} -E compare_files ${CMAKE_IGNORE_EOL} ${TEST_FOLDER}/${TEST_OUTPUT} ${TEST_FOLDER}/${TEST_REFERENCE}
               RESULT_VARIABLE TEST_COMPARE_RESULT
           )
         else ()
diff --git a/config/cmake_ext_mod/runTest.cmake b/config/cmake_ext_mod/runTest.cmake
index 6e78ba5..2b8b6b0 100644
--- a/config/cmake_ext_mod/runTest.cmake
+++ b/config/cmake_ext_mod/runTest.cmake
@@ -90,7 +90,7 @@ message (STATUS "COMMAND Result: ${TEST_RESULT}")
 # if the .err file exists and ERRROR_APPEND is enabled
 if (EXISTS "${TEST_FOLDER}/${TEST_OUTPUT}.err")
   file (READ ${TEST_FOLDER}/${TEST_OUTPUT}.err TEST_STREAM)
-  list(LENGTH TEST_STREAM test_len)
+  list (LENGTH TEST_STREAM test_len)
   if (test_len GREATER 0)
     if (TEST_MASK_FILE)
       STRING(REGEX REPLACE "CurrentDir is [^\n]+\n" "CurrentDir is (dir name)\n" TEST_STREAM "${TEST_STREAM}")
@@ -210,7 +210,7 @@ set (TEST_COMPARE_RESULT 0)
 if (NOT TEST_SKIP_COMPARE)
   if (EXISTS "${TEST_FOLDER}/${TEST_REFERENCE}")
     file (READ ${TEST_FOLDER}/${TEST_REFERENCE} TEST_STREAM)
-    list(LENGTH TEST_STREAM test_len)
+    list (LENGTH TEST_STREAM test_len)
     if (test_len GREATER 0)
       if (WIN32 OR MINGW)
         configure_file(${TEST_FOLDER}/${TEST_REFERENCE} ${TEST_FOLDER}/${TEST_REFERENCE}.tmp NEWLINE_STYLE CRLF)
@@ -224,7 +224,7 @@ if (NOT TEST_SKIP_COMPARE)
       if (NOT TEST_SORT_COMPARE)
         # now compare the output with the reference
         execute_process (
-            COMMAND ${CMAKE_COMMAND} -E compare_files ${TEST_FOLDER}/${TEST_OUTPUT} ${TEST_FOLDER}/${TEST_REFERENCE}
+            COMMAND ${CMAKE_COMMAND} -E compare_files ${CMAKE_IGNORE_EOL} ${TEST_FOLDER}/${TEST_OUTPUT} ${TEST_FOLDER}/${TEST_REFERENCE}
             RESULT_VARIABLE TEST_COMPARE_RESULT
         )
       else ()
@@ -281,7 +281,7 @@ if (NOT TEST_SKIP_COMPARE)
   set (TEST_ERRREF_RESULT 0)
   if (TEST_ERRREF)
     file (READ ${TEST_FOLDER}/${TEST_ERRREF} TEST_STREAM)
-    list(LENGTH TEST_STREAM test_len)
+    list (LENGTH TEST_STREAM test_len)
     if (test_len GREATER 0)
       if (WIN32 OR MINGW)
         configure_file(${TEST_FOLDER}/${TEST_ERRREF} ${TEST_FOLDER}/${TEST_ERRREF}.tmp NEWLINE_STYLE CRLF)
@@ -294,7 +294,7 @@ if (NOT TEST_SKIP_COMPARE)
 
       # now compare the error output with the error reference
       execute_process (
-          COMMAND ${CMAKE_COMMAND} -E compare_files ${TEST_FOLDER}/${TEST_OUTPUT}.err ${TEST_FOLDER}/${TEST_ERRREF}
+          COMMAND ${CMAKE_COMMAND} -E compare_files ${CMAKE_IGNORE_EOL} ${TEST_FOLDER}/${TEST_OUTPUT}.err ${TEST_FOLDER}/${TEST_ERRREF}
           RESULT_VARIABLE TEST_ERRREF_RESULT
       )
       if (TEST_ERRREF_RESULT)
@@ -343,7 +343,7 @@ set (TEST_GREP_RESULT 0)
 if (TEST_GREP_COMPARE)
   # now grep the output with the reference
   file (READ ${TEST_FOLDER}/${TEST_OUTPUT} TEST_STREAM)
-  list(LENGTH TEST_STREAM test_len)
+  list (LENGTH TEST_STREAM test_len)
   if (test_len GREATER 0)
     # TEST_REFERENCE should always be matched
     string (REGEX MATCH "${TEST_REFERENCE}" TEST_MATCH ${TEST_STREAM})