Add drive letter to source paths when calling qt-internal- scripts

Like qt-configure-module.bat, when building with unity build, CMake
needs to know the full path of the source directory to be able to
correctly generate its `*_cxx.cxx` files. So far, this seems to only
affect Windows' LLVM/MinGW builds. By this patch, I make sure that we
pass the full path to CMake.

Pick-to: 6.5
Task-number: QTBUG-109394
Change-Id: Ida2da127ecba95856b6e0091936c471c2a116936
Reviewed-by: Alexandru Croitor <[email protected]>

cmake/QtBuildInternals/QtStandaloneTestTemplateProject/CMakeLists.txt

@@ -18,6 +18,9 @@ else()
     set(absolute_project_path "${QT_STANDALONE_TEST_PATH}")
 endif()
 
+# If path does not include the drive letter, we try to add it.
+get_filename_component(absolute_project_path "." REALPATH BASE_DIR "${absolute_project_path}")
+
 if(NOT IS_DIRECTORY "${absolute_project_path}")
     get_filename_component(filename "${absolute_project_path}" NAME)
     get_filename_component(directory "${absolute_project_path}" DIRECTORY)

libexec/qt-internal-configure-tests.bat.in

@@ -3,6 +3,13 @@ setlocal ENABLEDELAYEDEXPANSION ENABLEEXTENSIONS
 set script_dir_path=%~dp0
 set script_dir_path=%script_dir_path:~0,-1%
 
+rem add the drive letter to the source_dir_path,
+rem by removing the path argument, expanding it, and adding it back
+set source_dir_path=%~dpnx1
+set args=%*
+set args=%args:* =%
+set args=%source_dir_path% %args%
+
 set cmake_scripts_dir=%script_dir_path%
 
 set relative_bin_dir=@relative_path_from_libexec_dir_to_bin_dir@
@@ -11,4 +18,4 @@ set relative_bin_dir="%relative_bin_dir%"\
 )
 
 call "%script_dir_path%"\%relative_bin_dir%"qt-cmake.bat" ^
-     @script_passed_args@ %*
+     @script_passed_args@ %args%