libremakepkg: integrate distcc-tool

1 files changed, 63 insertions, 4 deletions

diff --git a/src/chroot-tools/libremakepkg b/src/chroot-tools/libremakepkg
index d2ce222..f4fda83 100755
--- a/src/chroot-tools/libremakepkg
+++ b/src/chroot-tools/libremakepkg
@@ -52,7 +52,12 @@ run() (
 	local copydir=$1; shift
 	local cmd="$*"
 
-	trap "rm -f -- '$copydir/chrootexec'" EXIT
+	if $HASNET; then
+		trap "rm -f -- '$copydir/chrootexec'" EXIT
+	else
+		distcc_start "$copydir"
+		trap "rm -f -- '$copydir/chrootexec'; distcc_stop '$copydir'" EXIT
+	fi
 
 	cat >"$copydir/chrootexec" <<EOF
 #!/bin/bash
@@ -74,6 +79,51 @@ EOF
 	fi
 )
 
+distcc_start() {
+	local copydir=$1
+	# Because /{,usr/}{,s}bin are all symlinked together for
+	# fileystem 2013.05-2 and up, I can take shortcuts when checking for
+	# existance of programs.
+	if [[ -f "$copydir/bin/socat" && -f "$copydir/bin/distcc" ]]; then
+		local home=$LIBREHOME
+		$INCHROOT || home="$copydir/build"
+
+		cp -a "$(which distcc-tool)" "$copydir/distcc-tool"
+
+		mkdir -p "$home/.ssh"
+
+		printf '%s\n' \
+			'/distcc-tool idaemon "$DISTCC_HOSTS" &' \
+			'DISTCC_HOSTS="$(/distcc-tool rewrite "$DISTCC_HOSTS")"' \
+			> "$home/.makepkg.conf"
+
+		printf '%s\n' \
+			'Host *' \
+			'    ProxyCommand /distcc-tool client %h %p' \
+			> "$home/.ssh/config"
+
+		distcc-tool odaemon "$copydir" &
+		echo $! > "$copydir/distcc-tool.pid"
+	fi
+}
+
+distcc_stop() {
+	local copydir=$1
+	local home=$LIBREHOME
+	$INCHROOT || home="$copydir/build"
+	if [[ -f "$copydir/distcc-tool.pid" ]]; then
+
+		odaemon=$(cat "$copydir/distcc-tool.pid")
+		kill -- $odaemon
+
+		rm -f -- \
+			"$copydir/distcc-tool" \
+			"$home/.makepkg.conf" \
+			"$home/.ssh/config" \
+			"$copydir/distcc-tool.pid"
+	fi
+}
+
 # Usage: add_to_local_repo $copydir $pkgfiles...
 add_to_local_repo() (
 	set +euE
@@ -217,9 +267,18 @@ usage() {
 	echo "Usage: $cmd [options] [-- makepkg args]"
 	echo 'This program will build your package.'
 	echo ''
-	echo 'If run from outside of a chroot, this will set PKGDEST and'
-	echo "SRCDEST in the chroot's \`/etc/makepkg.conf', as well as making"
-	echo "whataver alterations to the chroot \`librechroot' makes."
+	echo 'If run from outside of a chroot, command will make the following'
+	echo 'configuration changes in the chroot:'
+	echo '  - whatever changes `librechroot` makes.'
+	echo '  - set `PKGDEST` and `SRCDEST` in `/etc/makepkg.conf`'
+	echo '  - (maybe) delete `/build/.makepkg.conf`'
+	echo '  - (maybe) delete `/build/.ssh/config`'
+	echo 'If run from inside of a chroot, this command will:'
+	echo '  - (maybe) delete `~/.makepkg.conf`'
+	echo '  - (maybe) delete `~/.ssh/config`'
+	echo "The above 'maybe's happen as part of the workarounds to make"
+	echo 'distcc work in a network-less environment.  They will happen if'
+	echo 'both `socat` and `distcc` are installed in the chroot.'
 	echo ''
 	echo "The \`-n' and \`-l' options behave identically to librechroot,"
 	echo 'see the documentation there.'