scripts: tweak west build output

Follow along with changes made in west flash/debug/etc to make it
easier to see the output steps visually.

Signed-off-by: Marti Bolivar <[email protected]>

Author: mbolivar-nordic

scripts/west_commands/build.py

@@ -30,6 +30,9 @@
   cmake_opt             Extra options to pass to CMake; implies -c
 '''
 
+def _banner(msg):
+    log.inf('-- west build: ' + msg, colorize=True)
+
 def config_get(option, fallback):
     return config.get('build', option, fallback=fallback)
 
@@ -352,14 +355,15 @@ def _sanity_check(self):
                 self._sanity_check_source_dir()
 
     def _run_cmake(self, board, origin, cmake_opts):
-        log.inf('source directory: {}'.format(self.source_dir), colorize=True)
-        log.inf('build directory: {}{}'.
-                format(self.build_dir,
-                       ' (created)' if self.created_build_dir else ''),
-                colorize=True)
-        log.inf('BOARD:', ('{} (origin: {})'.format(board, origin) if board
-                           else 'UNKNOWN'),
-                colorize=True)
+        _banner(
+            '''build configuration:
+       source directory: {}
+       build directory: {}{}
+       BOARD: {}'''.
+            format(self.source_dir, self.build_dir,
+                   ' (created)' if self.created_build_dir else '',
+                   ('{} (origin: {})'.format(board, origin) if board
+                    else 'UNKNOWN')))
 
         if board is None and config_getboolean('board_warn', True):
             log.wrn('This looks like a fresh build and BOARD is unknown;',
@@ -372,6 +376,8 @@ def _run_cmake(self, board, origin, cmake_opts):
             log.dbg('Not generating a build system; one is present.')
             return
 
+        _banner('generating a build system')
+
         if board is not None and origin != 'CMakeCache.txt':
             cmake_opts = ['-DBOARD={}'.format(board)]
         else:
@@ -394,7 +400,7 @@ def _run_cmake(self, board, origin, cmake_opts):
         run_cmake(final_cmake_args, dry_run=self.args.dry_run)
 
     def _run_pristine(self):
-        log.inf('Making build dir {} pristine'.format(self.build_dir))
+        _banner('making build dir {} pristine'.format(self.build_dir))
 
         zb = os.environ.get('ZEPHYR_BASE')
         if not zb:
@@ -409,6 +415,10 @@ def _run_pristine(self):
         run_cmake(cmake_args, cwd=self.build_dir, dry_run=self.args.dry_run)
 
     def _run_build(self, target):
+        if target:
+            _banner('running target {}'.format(target))
+        else:
+            _banner('building application')
         extra_args = ['--target', target] if target else []
         if self.args.build_opt:
             extra_args.append('--')