From e22fcfa6e0b048dc0e13a730609514a1b268991f Mon Sep 17 00:00:00 2001
From: John Ankarstrom <john@ankarstrom.se>
Date: Wed, 7 Jul 2021 12:33:06 +0200
Subject: build.1: Document -f flag

---
 build.1 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/build.1 b/build.1
index c7c68b3..b71df89 100644
--- a/build.1
+++ b/build.1
@@ -9,6 +9,7 @@
 .Op Fl d
 .Op Fl d
 .Op Fl d
+.Op Fl f
 .Ar file
 .Op Ar ...
 .Sh DESCRIPTION
@@ -19,6 +20,10 @@ embedded in source files.
 The number of
 .Fl d
 flags control the printing of debugging information.
+The
+.Fl f
+flag disables modification time checks,
+forcing the build process.
 .Pp
 .Nm
 is decidedly not a
-- 
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