build: Fix update-authors rule to work out-of-tree

Signed-off-by: Simon McVittie <smcv@collabora.com>

diff --git a/Makefile.am b/Makefile.am
index 54baa326f295d413a350d5cf6a1db0201b1c76d7..db2a6e7c8dd21bfcccef49cc27682342f5591cb1 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -33,7 +33,7 @@ EXTRA_DIST =                  \
 all-local: Doxyfile
 
 update-authors:
-       git shortlog -s -e | cut -c 8- | sort > AUTHORS
+       ( cd $(srcdir) && git shortlog -s -e ) | cut -c 8- | sort > $(srcdir)/AUTHORS
 
 DISTCHECK_CONFIGURE_FLAGS = \
        --enable-xml-docs \