build system: configure: usage(): initial documentation.

1 files changed, 6 insertions, 0 deletions

diff --git a/configure b/configure
index 7139ece..a21df9e 100755
--- a/configure
+++ b/configure
@@ -5,6 +5,12 @@
 # as well as both LDFLAGS and LDFLAGS_CMDLINE, however
 # the latter variable of each pair should be preferred.
 
+usage()
+{
+	cat config.usage
+	exit $?
+}
+
 error_msg()
 {
 	echo $@ >&2