diff -r bc7b6aa5d67a -r 7030706266df cmake_modules/CMakeTestPascalCompiler.cmake
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmake_modules/CMakeTestPascalCompiler.cmake	Fri Dec 06 22:20:53 2019 +0100
@@ -0,0 +1,53 @@
+# This file is used by EnableLanguage in cmGlobalGenerator to determine that
+# the FreePascal can actually compile and link the most basic of programs.
+# If not, a fatal error is set, cmake stops processing commands and will not
+# generate any makefiles or projects.
+
+if(NOT CMAKE_Pascal_COMPILER_WORKS)
+    message(STATUS "Check for working Pascal compiler: ${CMAKE_Pascal_COMPILER}")
+    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp/testpascalcompiler.pas
+         "program testPascalCompiler;
+          begin
+          end.
+         ")
+
+    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp/CMakeLists.txt
+         "set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake_modules)
+          set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL \"\" FORCE)
+          project(test Pascal)
+          add_executable(testpascalcompiler testpascalcompiler.pas)
+         ")
+
+# To avoid try_compile recurse error, use any binary directory other
+# than ${CMAKE_BINARY_DIR}. The choice of
+# bindir = ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp is
+# especially advantageous since it makes an in-source build which
+# means that no special variables need to be set to find files.
+    try_compile(CMAKE_Pascal_COMPILER_WORKS
+                ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp
+                ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp
+                test
+                OUTPUT_VARIABLE RESULT_OUTPUT
+                )
+    set(PASCAL_TEST_WAS_RUN 1)
+endif(NOT CMAKE_Pascal_COMPILER_WORKS)
+
+if(NOT CMAKE_Pascal_COMPILER_WORKS)
+    message(STATUS "Check for working Pascal compiler: ${CMAKE_Pascal_COMPILER} -- broken")
+    file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeError.log
+         "Determining if the Pascal compiler works failed with "
+         "the following output:\n${RESULT_OUTPUT}\n\n")
+    message(FATAL_ERROR "The Pascal builder \"${CMAKE_Pascal_COMPILER}\" "
+            "is not able to compile and link a simple test program.\nIt fails "
+            "with the following output:\n ${RESULT_OUTPUT}\n\n"
+            "CMake will not be able to correctly generate this project.")
+else(NOT CMAKE_Pascal_COMPILER_WORKS)
+    if(PASCAL_TEST_WAS_RUN)
+        message(STATUS "Check for working Pascal compiler: ${CMAKE_Pascal_COMPILER} -- works")
+        file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+             "Determining if the Pascal compiler works passed with "
+             "the following output:\n${RESULT_OUTPUT}\n\n")
+    endif(PASCAL_TEST_WAS_RUN)
+    set(CMAKE_Pascal_COMPILER_WORKS 1 CACHE INTERNAL "")
+endif(NOT CMAKE_Pascal_COMPILER_WORKS)
+