From 61f9ea495472186ba3d15506fa5525a60f61cc25 Mon Sep 17 00:00:00 2001
From: Evan Maddock <5157277+EbonJaeger@users.noreply.github.com>
Date: Thu, 9 Jul 2026 18:39:06 -0400
Subject: [PATCH] build: Add support for DESTDIR (#2783)

This makes it easier for distros to use the Makefile when creating
packages. It enables us to specify a base destination directory to
install the project files to. E.g., on Solus, when creating eopkgs, files
must be installed to a special directory path, which becomes the package
files. I believe Fedora packages, and others, are the same.

Signed-off-by: Evan Maddock <maddock.evan@vivaldi.net>
(cherry picked from commit 45f6232e320dfedc5c1339b4aba37a3c2ec5604b)
---
 Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index fa2d4f042..e3ea3707c 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,8 @@ BINARY_NAME=dms
 CORE_DIR=core
 BUILD_DIR=$(CORE_DIR)/bin
 PREFIX ?= /usr/local
-INSTALL_DIR=$(PREFIX)/bin
-DATA_DIR=$(PREFIX)/share
+INSTALL_DIR=$(DESTDIR)$(PREFIX)/bin
+DATA_DIR=$(DESTDIR)$(PREFIX)/share
 ICON_DIR=$(DATA_DIR)/icons/hicolor/scalable/apps
 
 USER_HOME := $(if $(SUDO_USER),$(shell getent passwd $(SUDO_USER) | cut -d: -f6),$(HOME))
@@ -62,7 +62,7 @@ install-systemd:
 	@echo "Installing systemd user service..."
 	@mkdir -p $(SYSTEMD_USER_DIR)
 	@if [ -n "$(SUDO_USER)" ]; then chown -R $(SUDO_USER):"$(id -gn $SUDO_USER)" $(SYSTEMD_USER_DIR); fi
-	@sed 's|/usr/bin/dms|$(INSTALL_DIR)/dms|g' $(ASSETS_DIR)/systemd/dms.service > $(SYSTEMD_USER_DIR)/dms.service
+	@sed 's|/usr/bin/dms|$(PREFIX)/bin/dms|g' $(ASSETS_DIR)/systemd/dms.service > $(SYSTEMD_USER_DIR)/dms.service
 	@chmod 644 $(SYSTEMD_USER_DIR)/dms.service
 	@if [ -n "$(SUDO_USER)" ]; then chown $(SUDO_USER):"$(id -gn $SUDO_USER)" $(SYSTEMD_USER_DIR)/dms.service; fi
 	@echo "Systemd service installed to $(SYSTEMD_USER_DIR)/dms.service"