Update to new recipe system (S++ 2.0).

addons/cmake_project.py

@@ -1,9 +1,12 @@
 
-import os
+import json
 import pathlib
+import shutil
+
 from SCons.Script import *
 
 _BUILT_STAMPFILE = '.spp_built'
+_VERSION = 0 # bump if you change how the projects are build to trigger a clean build
 
 Import('env')
 
@@ -11,11 +14,45 @@ def cmd_quote(s: str) -> str:
     escaped = s.replace('\\', '\\\\')
     return f'"{escaped}"'
 
-def _cmake_project(env: Environment, project_root: str, generate_args: 'list[str]' = [], build_args : 'list[str]' = [], install_args : 'list[str]' = []) -> dict:
+def _generate_cmake_c_flags(dependencies: 'list[dict]') -> str:
+    parts = []
+    for dependency in dependencies:
+        for path in dependency.get('CPPPATH', []):
+            parts.append(cmd_quote(f'-I{path}'))
+    return ' '.join(parts)
+
+def _generate_cmake_cxx_flags(dependencies: 'list[dict]') -> str:
+    parts = []
+    for dependency in dependencies:
+        for path in dependency.get('CPPPATH', []):
+            parts.append(cmd_quote(f'-I{path}'))
+    return ' '.join(parts)
+
+def _calc_version_hash(dependencies: 'list[dict]') -> str:
+    return json.dumps({
+        'version': _VERSION,
+        'dependencies': dependencies
+    })
+
+def _cmake_project(env: Environment, project_root: str, generate_args: 'list[str]' = [], build_args : 'list[str]' = [], install_args : 'list[str]' = [], dependencies: 'list[dict]' = []) -> dict:
     config = env['BUILD_TYPE']
     build_dir = os.path.join(project_root, f'build_{config}')
     install_dir = os.path.join(project_root, f'install_{config}')
-    is_built = os.path.exists(os.path.join(install_dir, _BUILT_STAMPFILE))
+
+    version_hash = _calc_version_hash(dependencies)
+    stamp_file = pathlib.Path(install_dir, _BUILT_STAMPFILE)
+    is_built = stamp_file.exists()
+
+    if is_built:
+        with stamp_file.open('r') as f:
+            build_version = f.read()
+            if build_version != version_hash:
+                print(f'Rebuilding CMake project at {project_root} as the script version changed.')
+                is_built = False
+        if not is_built:
+            shutil.rmtree(build_dir)
+            shutil.rmtree(install_dir)
+
     if not is_built or env['UPDATE_REPOSITORIES']:
         print(f'Building {project_root}, config {config}')
         os.makedirs(build_dir, exist_ok=True)
@@ -30,10 +67,15 @@ def _cmake_project(env: Environment, project_root: str, generate_args: 'list[str
         # TODO: is this a problem?
         # environ = os.environ.copy()
         # environ['CXXFLAGS'] = ' '.join(f'-D{define}' for define in env['CPPDEFINES']) # TODO: who cares about windows?
-        run_cmd(['cmake', '-G', 'Ninja', '-B', build_dir, f'-DCMAKE_BUILD_TYPE={build_type}', f'-DCMAKE_INSTALL_PREFIX={cmd_quote(install_dir)}', '-DBUILD_TESTING=OFF', *generate_args, project_root])
+        run_cmd(['cmake', '-G', 'Ninja', '-B', build_dir, f'-DCMAKE_BUILD_TYPE={build_type}',
+                 f'-DCMAKE_INSTALL_PREFIX={cmd_quote(install_dir)}', '-DBUILD_TESTING=OFF',
+                 f'-DCMAKE_C_FLAGS={_generate_cmake_c_flags(dependencies)}',
+                 f'-DCMAKE_CXX_FLAGS={_generate_cmake_cxx_flags(dependencies)}', *generate_args, project_root])
         run_cmd(['cmake', '--build', *build_args, cmd_quote(build_dir)])
         run_cmd(['cmake', '--install', *install_args, cmd_quote(build_dir)])
-        pathlib.Path(install_dir, _BUILT_STAMPFILE).touch()
+
+        with pathlib.Path(install_dir, _BUILT_STAMPFILE).open('w') as f:
+            f.write(version_hash)
 
     libpath = []
     for lib_folder in ('lib', 'lib64'):