[Libguestfs] [PATCH v2 2/6] docs: fix out-of-source documentation build

[Pino Toscano]

Invoke make-internal-documentation.pl by its path in the source
directory.

Also, depend on it to regenerate the documentation in case
make-internal-documentation.pl changes.
---
 docs/Makefile.am | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/Makefile.am b/docs/Makefile.am
index e1f2df952..f16f16c5e 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -151,9 +151,9 @@ stamp-guestfs-hacking.pod: guestfs-hacking.pod internal-documentation.pod
 
 source_files := $(shell cat $(srcdir)/C_SOURCE_FILES)
 
-internal-documentation.pod: $(source_files:%=$(top_srcdir)/%)
+internal-documentation.pod: $(source_files:%=$(top_srcdir)/%) $(srcdir)/make-internal-documentation.pl
 	rm -f $@ $@-t
-	./make-internal-documentation.pl \
+	$(srcdir)/make-internal-documentation.pl \
 	    --srcdir $(top_srcdir) \
 	    -o $@-t \
 	    $(source_files)
-- 
2.23.0