Add --no-store-vc-rev option for use in CI builds

This skips putting the git revision in the build.h header. This value
changing every time means we effectively disable ccache's direct mode
(which is faster than preprocessor mode) and also prevent any caching
of the amalgamation file (since version.cpp expands the macro).

1 files changed, 4 insertions, 1 deletions

diff --git a/configure.py b/configure.py
index a4f9ca062..4ae2678e5 100755
--- a/configure.py
+++ b/configure.py
@@ -437,6 +437,9 @@ def process_command_line(args): # pylint: disable=too-many-locals,too-many-state
                            action='store_true', default=False,
                            help="Enable extra warnings")
 
+    build_group.add_option('--no-store-vc-rev', action='store_true', default=False,
+                           help=optparse.SUPPRESS_HELP)
+
     build_group.add_option('--with-python-versions', dest='python_version',
                            metavar='N.M',
                            default='%d.%d' % (sys.version_info[0], sys.version_info[1]),
@@ -1832,7 +1835,7 @@ def create_template_vars(source_paths, build_paths, options, modules, cc, arch,
         'version_major':  Version.major(),
         'version_minor':  Version.minor(),
         'version_patch':  Version.patch(),
-        'version_vc_rev': Version.vc_rev(),
+        'version_vc_rev': 'unknown' if options.no_store_vc_rev else Version.vc_rev(),
         'abi_rev':        Version.so_rev(),
 
         'version':        Version.as_string(),