Fixed target info dumping.

SConscript

@@ -522,8 +522,6 @@ def _version_to_string(version) -> str:
     return '.'.join([str(v) for v in version])
 
 def _finalize(env: Environment):
-    if dump is not None:
-        _dump()
     if generate_project:
         _generate_project(generate_project)
         Exit(0)
@@ -546,6 +544,8 @@ def _finalize(env: Environment):
             }
         }, f)
 
+    if dump is not None:
+        _dump()
 
     for target in env['SPP_TARGETS']:
         _build_target(target)
@@ -731,8 +731,14 @@ def _generate_project(project_type: str) -> None:
 
     def _get_target_property(build_type: str, target: str, path: str) -> Any:
         import subprocess
-        output = subprocess.check_output((shutil.which('scons'), '--silent', f'--build_type={build_type}', '--dump=targets', '--dump_format=json', f'--dump_path={target}/{path}'), text=True).strip()
-        return json.loads(output)
+        cmd = (shutil.which('scons'), '--silent', f'--build_type={build_type}', '--dump=targets', '--dump_format=json', f'--dump_path={target}/{path}')
+        output = subprocess.check_output(cmd, text=True).strip()
+        try:
+            return json.loads(output)
+        except json.JSONDecodeError as e:
+            env.Warn(f'Command: {cmd}')
+            env.Warn(f'Output: {output}')
+            raise e
 
 
     executables = _get_executables()
@@ -1135,6 +1141,7 @@ env.Append(CXXFLAGS = [])
 env.Append(CPPPATH = [])
 env.Append(CPPDEFINES = [])
 env.Append(LINKFLAGS = [])
+env.Append(LIBS = [])
 
 # init SPP environment variables
 env['SPP_DIR'] = _spp_dir.abspath