| diff --git a/rpython/translator/platform/posix.py b/rpython/translator/platform/posix.py |
| index d53449a..4463831 100644 |
| --- a/rpython/translator/platform/posix.py |
| +++ b/rpython/translator/platform/posix.py |
| @@ -62,7 +62,8 @@ class BasePosix(Platform): |
| |
| def _pkg_config(self, lib, opt, default, check_result_dir=False): |
| try: |
| - ret, out, err = _run_subprocess("pkg-config", [lib, opt]) |
| + pkg_config = os.environ.get('PKG_CONFIG', 'pkg-config') |
| + ret, out, err = _run_subprocess(pkg_config, [lib, opt]) |
| except OSError as e: |
| err = str(e) |
| ret = 1 |
