build: Fix build for systems with no /bin/true

There are systems with no /bin/true - it might have different path
(/usr/bin/true) or even a shell builtin.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 0ec5b4c92bc90f9efc866ee3d935996171ee0638..d7c31edb4944ffda27c86fba4cd1dc681c94447a 100644 (file)
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -61,5 +61,5 @@ gitversion.h: gitversion.h.tmp
 else
 .PHONY: gitversion.h
 gitversion.h:
-       /bin/true
+       true
 endif