From 526e28220a351db2f439793b4a310c8863c123a9 Mon Sep 17 00:00:00 2001
From: "Wladimir J. van der Laan" <laanwj@gmail.com>
Date: Wed, 31 Jan 2018 11:22:42 +0100
Subject: [PATCH] contrib: Add support for out-of-tree builds in
 gen-manpages.sh

This adds support for setting the environment variable `BUILDDIR`
to point to executables that are outside the source directory.

E.g. to invoke the tool when the build is in $PWD/build:

```bash
BUILDDIR=$PWD/build contrib/devtools/gen-manpages.sh
```
---
 contrib/devtools/README.md       |  8 ++++++++
 contrib/devtools/gen-manpages.sh | 12 +++++++-----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/contrib/devtools/README.md b/contrib/devtools/README.md
index 67c5e15a1..8ca8fa906 100644
--- a/contrib/devtools/README.md
+++ b/contrib/devtools/README.md
@@ -85,6 +85,14 @@ gen-manpages.sh
 A small script to automatically create manpages in ../../doc/man by running the release binaries with the -help option.
 This requires help2man which can be found at: https://www.gnu.org/software/help2man/
 
+With in-tree builds this tool can be run from any directory within the
+repostitory. To use this tool with out-of-tree builds set `BUILDDIR`. For
+example:
+
+```bash
+BUILDDIR=$PWD/build contrib/devtools/gen-manpages.sh
+```
+
 git-subtree-check.sh
 ====================
 
diff --git a/contrib/devtools/gen-manpages.sh b/contrib/devtools/gen-manpages.sh
index 925d6a625..27c80548c 100755
--- a/contrib/devtools/gen-manpages.sh
+++ b/contrib/devtools/gen-manpages.sh
@@ -1,13 +1,15 @@
 #!/bin/bash
 
 TOPDIR=${TOPDIR:-$(git rev-parse --show-toplevel)}
-SRCDIR=${SRCDIR:-$TOPDIR/src}
+BUILDDIR=${BUILDDIR:-$TOPDIR}
+
+BINDIR=${BINDIR:-$BUILDDIR/src}
 MANDIR=${MANDIR:-$TOPDIR/doc/man}
 
-BITCOIND=${BITCOIND:-$SRCDIR/bitcoind}
-BITCOINCLI=${BITCOINCLI:-$SRCDIR/bitcoin-cli}
-BITCOINTX=${BITCOINTX:-$SRCDIR/bitcoin-tx}
-BITCOINQT=${BITCOINQT:-$SRCDIR/qt/bitcoin-qt}
+BITCOIND=${BITCOIND:-$BINDIR/bitcoind}
+BITCOINCLI=${BITCOINCLI:-$BINDIR/bitcoin-cli}
+BITCOINTX=${BITCOINTX:-$BINDIR/bitcoin-tx}
+BITCOINQT=${BITCOINQT:-$BINDIR/qt/bitcoin-qt}
 
 [ ! -x $BITCOIND ] && echo "$BITCOIND not found or not executable." && exit 1