build-llvm.py: Fix using relative paths for folders

When a relative folder value is passed, it should be appended to the
current working directory, not tc-build's directory. Fix this by always
calling .resolve() as part of every folder's creation, which will
automatically expand relative paths as relative to the current working
directory, which behaves more in line with other utilities.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>

build-llvm.py

@@ -1548,28 +1548,19 @@ def main():
 
     args = parse_parameters(root_folder)
 
-    build_folder = pathlib.Path(args.build_folder)
-    if not build_folder.is_absolute():
-        build_folder = root_folder.joinpath(build_folder)
-
-    install_folder = pathlib.Path(args.install_folder)
-    if not install_folder.is_absolute():
-        install_folder = root_folder.joinpath(install_folder)
+    build_folder = pathlib.Path(args.build_folder).resolve()
+    install_folder = pathlib.Path(args.install_folder).resolve()
 
     linux_folder = None
     if args.linux_folder:
-        linux_folder = pathlib.Path(args.linux_folder)
-        if not linux_folder.is_absolute():
-            linux_folder = root_folder.joinpath(linux_folder)
+        linux_folder = pathlib.Path(args.linux_folder).resolve()
         if not linux_folder.exists():
             utils.print_error(
                 f"\nSupplied kernel source ({linux_folder}) does not exist!")
             sys.exit(1)
 
     if args.llvm_folder:
-        llvm_folder = pathlib.Path(args.llvm_folder)
-        if not llvm_folder.is_absolute():
-            llvm_folder = root_folder.joinpath(llvm_folder)
+        llvm_folder = pathlib.Path(args.llvm_folder).resolve()
         if not llvm_folder.exists():
             utils.print_error(
                 f"\nSupplied LLVM source ({llvm_folder}) does not exist!")