external_project: Write output in log files when not verbose
diff --git a/mesonbuild/modules/unstable_external_project.py b/mesonbuild/modules/unstable_external_project.py
index 1604e25..e2205e5 100644
--- a/mesonbuild/modules/unstable_external_project.py
+++ b/mesonbuild/modules/unstable_external_project.py
@@ -162,12 +162,17 @@
def _run(self, step: str, command: T.List[str]):
mlog.log('External project {}:'.format(self.name), mlog.bold(step))
- output = None if self.verbose else subprocess.DEVNULL
+ log_filename = Path(mlog.log_dir, '{}-{}.log'.format(self.name, step))
+ output = None
+ if not self.verbose:
+ output = open(log_filename, 'w')
p, o, e = Popen_safe(command, cwd=str(self.build_dir), env=self.run_env,
stderr=subprocess.STDOUT,
stdout=output)
if p.returncode != 0:
- m = '{} step failed:\n{}'.format(step, e)
+ m = '{} step returned error code {}.'.format(step, p.returncode)
+ if not self.verbose:
+ m += '\nSee logs: ' + str(log_filename)
raise MesonException(m)
def _create_targets(self):
