doc: Fix for make distcheck

When building from a separate build directory, a2x did not find the
source file nft.txt. Using '$<' instead fixes this.

Fixes: 3bacae9e4a1e3 ("doc: Review man page building in Makefile.am")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/doc/Makefile.am b/doc/Makefile.am
index 503d6cd80051c5eed0db36939bf30ab5f739ca94..01e1af90bbf0cf06bd13d71e6a15b1c530f0d0e3 100644 (file)
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -14,7 +14,7 @@ ASCIIDOC_INCLUDES = \
 ASCIIDOCS = ${ASCIIDOC_MAIN} ${ASCIIDOC_INCLUDES}
 
 nft.8: ${ASCIIDOCS}
-       ${AM_V_GEN}${A2X} ${A2X_OPTS_MANPAGE} nft.txt
+       ${AM_V_GEN}${A2X} ${A2X_OPTS_MANPAGE} $<
 
 .adoc.3:
        ${AM_V_GEN}${A2X} ${A2X_OPTS_MANPAGE} $<