From 3e164f15b77230b0961048893d03ec588fc8ab0e Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Wed, 11 Apr 2012 18:37:14 +0100
Subject: po-docs: Allow parallel builds in po-docs directory.

The first time the directory is checked out from git, there are no
*.pod files.  In a parallel build, the first thread notices this and
runs the 'make -C .. update-po' rule, but the other threads also try
to run at the same time and fail.
---
 .gitignore             |  1 +
 po-docs/ja/Makefile.am | 11 ++++++++---
 po-docs/uk/Makefile.am | 11 ++++++++---
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index a31c6ceb..4a5c47dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -295,6 +295,7 @@ pod2htm?.tmp
 /po-docs/*/*.pl
 /po-docs/po4a.conf
 /po-docs/*/*.pod
+/po-docs/*/stamp-update-po
 /podwrapper.sh
 /po/en@boldquot.header
 /po/en@quot.header
diff --git a/po-docs/ja/Makefile.am b/po-docs/ja/Makefile.am
index 3f5b89e0..5a1c7e43 100644
--- a/po-docs/ja/Makefile.am
+++ b/po-docs/ja/Makefile.am
@@ -21,7 +21,7 @@
 
 LINGUA = $(shell basename -- `pwd`)
 
-CLEANFILES = *.1 *.3
+CLEANFILES = *.1 *.3 stamp-update-po
 
 MANPAGES = \
 	guestfs.3 \
@@ -45,12 +45,14 @@ MANPAGES = \
 	virt-sparsify.1 \
 	virt-sysprep.1
 
+podfiles := $(shell for f in `cat ../podfiles`; do basename $$f; done)
+
 # Ship the POD files and the translated manpages in the tarball.  This
 # just simplifies building from the tarball, at a small cost in extra
 # size.
 EXTRA_DIST = \
 	$(MANPAGES) \
-	$(shell for f in `cat ../podfiles`; do basename $$f; done)
+	$(podfiles)
 
 all-local: $(MANPAGES)
 
@@ -86,8 +88,11 @@ virt-sysprep.1: virt-sysprep.pod sysprep-extra-options.pod sysprep-operations.po
 
 # Ensure that the first time we build from git, since guestfs.pod
 # hasn't been built yet, build it.
-guestfs.pod:
+$(podfiles): stamp-update-po
+
+stamp-update-po:
 	if [ ! -f guestfs.pod ]; then make -C .. update-po; fi
+	touch $@
 
 # XXX Can automake do this properly?
 install-data-hook:
diff --git a/po-docs/uk/Makefile.am b/po-docs/uk/Makefile.am
index 3f5b89e0..5a1c7e43 100644
--- a/po-docs/uk/Makefile.am
+++ b/po-docs/uk/Makefile.am
@@ -21,7 +21,7 @@
 
 LINGUA = $(shell basename -- `pwd`)
 
-CLEANFILES = *.1 *.3
+CLEANFILES = *.1 *.3 stamp-update-po
 
 MANPAGES = \
 	guestfs.3 \
@@ -45,12 +45,14 @@ MANPAGES = \
 	virt-sparsify.1 \
 	virt-sysprep.1
 
+podfiles := $(shell for f in `cat ../podfiles`; do basename $$f; done)
+
 # Ship the POD files and the translated manpages in the tarball.  This
 # just simplifies building from the tarball, at a small cost in extra
 # size.
 EXTRA_DIST = \
 	$(MANPAGES) \
-	$(shell for f in `cat ../podfiles`; do basename $$f; done)
+	$(podfiles)
 
 all-local: $(MANPAGES)
 
@@ -86,8 +88,11 @@ virt-sysprep.1: virt-sysprep.pod sysprep-extra-options.pod sysprep-operations.po
 
 # Ensure that the first time we build from git, since guestfs.pod
 # hasn't been built yet, build it.
-guestfs.pod:
+$(podfiles): stamp-update-po
+
+stamp-update-po:
 	if [ ! -f guestfs.pod ]; then make -C .. update-po; fi
+	touch $@
 
 # XXX Can automake do this properly?
 install-data-hook:
-- 
cgit