FBT: Allow apps to specify custom cflags --nobuild

CHANGELOG.md

@@ -20,6 +20,7 @@
   - UL: Somfy Keytis button switch and Add Manually support (by @xMasterX)
   - UL: Genius Echo/Bravo add 2 buttons hold simulation (0xB btn code) (by @xMasterX)
 - UL: JS: Add IR capabilities to the JS engine (by @LuisMayo)
+- FBT: Allow apps to specify custom cflags (by @WillyJL)
 - UL: Docs: Add [full list of supported SubGHz protocols](https://github.com/Next-Flip/Momentum-Firmware/blob/dev/documentation/SubGHzSupportedSystems.md) and their frequencies/modulations that can be used for reading remotes (by @xMasterX)
 
 ### Updated:

scripts/fbt/appmanifest.py

@@ -68,6 +68,7 @@ class FlipperApplication:
 
     # .fap-specific
     sources: List[str] = field(default_factory=lambda: ["*.c*"])
+    cflags: List[str] = field(default_factory=list)
     fap_version: Union[str, Tuple[int]] = "0.1"
     fap_icon: Optional[str] = None
     fap_libs: List[str] = field(default_factory=list)

scripts/fbt_tools/fbt_extapps.py

@@ -57,6 +57,7 @@ class AppBuilder:
             FAP_WORK_DIR=self.app_work_dir,
         )
         self.app_env.Append(
+            CCFLAGS=self.app.cflags,
             CPPDEFINES=[
                 ("FAP_VERSION", f'\\"{".".join(map(str, self.app.fap_version))}\\"'),
                 *self.app.cdefines,
@@ -89,7 +90,7 @@ class AppBuilder:
         fap_icons = self.app_env.CompileIcons(
             self.app_work_dir,
             self.app._appdir.Dir(self.app.fap_icon_assets),
-            icon_bundle_name=f"{self.app.fap_icon_assets_symbol or self.app.appid }_icons",
+            icon_bundle_name=f"{self.app.fap_icon_assets_symbol or self.app.appid}_icons",
             add_include=True,
         )
         self.app_env.Alias("_fap_icons", fap_icons)
@@ -420,7 +421,7 @@ def _validate_app_imports(target, source, env):
         if env.get("_CHECK_APP"):
             raise UserError(warning_msg)
         else:
-            SCons.Warnings.warn(SCons.Warnings.LinkWarning, warning_msg),
+            SCons.Warnings.warn(SCons.Warnings.LinkWarning, warning_msg)
 
 
 def GetExtAppByIdOrPath(env, app_dir):