build: Readjust where build instructions live

.drone.yml

@@ -1,6 +1,6 @@
 ---
 kind: pipeline
-type: kubernetes
+type: drone
 name: manjaro
 
 steps:
@@ -20,10 +20,7 @@ steps:
       mtu: 1000
 
     commands:
-      - pacman -Sy --noconfirm
-      - pacman -S --noconfirm base-devel python meson lsb-release git
-      - chown -R nobody:nobody .
-      - sudo -u nobody make
+      - tools/dockerbuild.sh manjaro
 
   - name: test
     image: archlinux:latest
@@ -38,7 +35,7 @@ steps:
 
 ---
 kind: pipeline
-type: kubernetes
+type: drone
 name: debian
 
 steps:
@@ -58,10 +55,7 @@ steps:
       mtu: 1000
 
     commands:
-      - touch /etc/pbuilderrc
-      - apt-get update
-      - apt-get install -y devscripts python3 build-essential git-buildpackage appstream dh-sequence-python3 meson
-      - make
+      - tools/dockerbuild.sh debian
 
   - name: test
     image: debian:unstable
@@ -76,7 +70,7 @@ steps:
 
 ---
 kind: pipeline
-type: kubernetes
+type: drone
 name: fedora
 
 steps:
@@ -96,8 +90,7 @@ steps:
       mtu: 1000
 
     commands:
-      - dnf install -y rpmdevtools rpmlint make automake python meson lsb-release git
-      - make
+      - tools/dockerbuild.sh fedora
 
   - name: test
     image: fedora:latest

Makefile

@@ -81,7 +81,14 @@ env:
 test: env
 	PYTHONPATH=. tools/in-env python3 -m g13gui.tests
 
-.PHONY: all clean install
+dist: clean
+	mkdir -p build
+	tar --exclude=build --exclude=.drone.yml --exclude-vcs -zcf build/g13gui_$(VERSION).tar.gz .
+	docker run -ti -v ${PWD}:/srcs -w /srcs fedora:latest tools/dockerbuild.sh fedora
+	docker run -ti -v ${PWD}:/srcs -w /srcs debian:latest tools/dockerbuild.sh debian
+	docker run -ti -v ${PWD}:/srcs -w /srcs arch:latest tools/dockerbuild.sh arch
+
+.PHONY: all clean install test
 .PHONY: manjaro manjaro-clean manjaro-install
 .PHONY: debian debian-build debian-clean debian-build-source debian-release
 

tools/dockerbuild.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+#
+# Bare-minimum shell script to isolate distro-specific setup requirements
+# without using make, which has been a standard part of POSIX for decades,
+# but for some idiotic reason not installed on Linux images by default.
+
+die() {
+	echo "$@" >/dev/stderr
+	exit 1
+}
+
+try() {
+	echo "$@"
+	"$@" || die "error: $1 exited with code $?"
+}
+
+DISTRO="$1"; shift
+
+[[ -z "${DISTRO}" ]] && die "Usage: dockerbuild.sh <distro>"
+
+case "${DISTRO}" in
+	manjaro)
+		try pacman -Sy --noconfirm
+		try pacman -S --noconfirm base-devel python meson lsb-release git
+
+		# Work around makepkg brain-damage and build as nobody
+		try mkdir -p /tmp/build
+		try cp -r /srcs /tmp/build
+		try chown -R nobody:nobody /tmp/build
+		cd /tmp/build
+		try sudo -u nobody make
+		try cp build/* /srcs/build
+		;;
+
+	debian)
+		# Work around pbuilder brain-damage in noninteractive contexts.
+		try touch /etc/pbuilderrc
+		try apt-get update
+		try apt-get install -y devscripts build-essential git-buildpackage appstream dh-sequence-python3 meson
+		cd /srcs
+		try make
+		;;
+
+	fedora)
+		try dnf install -y rpmdevtools rpmlint make python meson lsb-release git
+		cd /srcs
+		try make
+		;;
+
+	*)
+		die "Unknown distro '${DISTRO}'."
+esac
+