GHS: Append ".gpj" to target name when generating build command

-- Add test demonstrating issue
-- In the case of executable targets the target name is usually the same as used in "-o filename"
   But for static libraries the target name is usually "-o libname.a"
   "gbuild.exe target" will build whatever target matches against even the output from the compiler or linker
   But the targets in "cmake --build . --target name" should be target names in CMakeLists.txt not the actual filenames
   So change the "name" to "name.gpj" so it matches the target name in CMakeLists.txt.

Fixes #15975

Source/cmGlobalGhsMultiGenerator.cxx

@@ -413,7 +413,11 @@ void cmGlobalGhsMultiGenerator::GenerateBuildCommand(
     if (targetName == "clean") {
       makeCommand.push_back("-clean");
     } else {
-      makeCommand.push_back(targetName);
+      if (targetName.compare(targetName.size() - 4, 4, ".gpj") == 0) {
+        makeCommand.push_back(targetName);
+      } else {
+        makeCommand.push_back(targetName + ".gpj");
+      }
     }
   }
 }

Tests/CMakeLists.txt

@@ -2316,6 +2316,7 @@ ${CMake_BINARY_DIR}/bin/cmake -DDIR=dev -P ${CMake_SOURCE_DIR}/Utilities/Release
         "${CMAKE_CMAKE_COMMAND} -P ${CMake_SOURCE_DIR}/Tests/GhsMulti/GhsMultiMultipleProjects/verify.cmake")
       add_test_GhsMulti(compiler_options_none GhsMultiCompilerOptions None "-DRUN_TEST=RELEASE_FLAGS -DRUN_TEST_BUILD_TYPE=\"\"" "")
       add_test_GhsMulti(compiler_options_kernel GhsMultiCompilerOptions Kernel "-DRUN_TEST=KERNEL_FLAGS -DRUN_TEST_BUILD_TYPE=DEBUG" "")
+      add_test_GhsMulti(try_compile_copy GhsMultiCopyFile "" "" "")
       list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/GhsMulti/${ghs_config_name}")
       #unset ghs config variables
       unset(ghs_config_name)

Tests/GhsMulti/GhsMultiCopyFile/CMakeLists.txt

@@ -0,0 +1,35 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
+
+project(test C)
+
+set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
+try_compile(RESULT
+  ${CMAKE_CURRENT_BINARY_DIR}/build
+  ${CMAKE_CURRENT_SOURCE_DIR}/test.c
+  CMAKE_FLAGS -DGHS_BSP_NAME=${GHS_BSP_NAME}
+  -DGHS_OS_ROOT=${GHS_OS_ROOT}
+  -DGHS_OS_DIR=${GHS_OS_DIR}
+  -DGHS_TOOLSET_ROOT=${GHS_TOOLSET_ROOT}
+  -DGHS_TARGET_PLATFORM=${GHS_TARGET_PLATFORM}
+  OUTPUT_VARIABLE OUTPUT
+  COPY_FILE "${CMAKE_CURRENT_BINARY_DIR}/test_library"
+)
+
+message(STATUS "Output from build:\n${OUTPUT}")
+
+if(NOT RESULT)
+  message(SEND_ERROR "try_compile() failed")
+endif()
+
+if(EXISTS "${CMAKE_CURRENT_BINARY_DIR}/test_library")
+  if (IS_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/test_library")
+    message(SEND_ERROR "library is folder !")
+  else()
+    message(STATUS "library seems okay")
+  endif()
+else()
+  message(SEND_ERROR "library is not found !")
+endif()

Tests/GhsMulti/GhsMultiCopyFile/test.c

@@ -0,0 +1,4 @@
+int lib(int x)
+{
+  return -x;
+}