From 7d282bf25e6b11c1e594164cdccb56460a34b42d Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sat, 11 Apr 2020 14:17:20 +0200
Subject: [PATCH] Make UDEVDIR configurable.

This makes the udev directory overridable on the command line.
If none is given, it defaults to getting the directory from pkg-config,
if you have the udev development package installed, and failing that,
hard-codes /lib/udev as before.

All of this is based on research and suggestions from speps.
---
 Makefile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 0fb94ba..892c2ba 100644
--- a/Makefile
+++ b/Makefile
@@ -7,6 +7,8 @@ RANLIB := ranlib
 INSTALL := install
 PREFIX := /usr/local
 LIBDIR := $(PREFIX)/lib
+UDEVDIR ?= $(shell $(PKG_CONFIG) --variable udevdir udev)
+UDEVDIR ?= /lib/udev
 LIB := libbmusb.a
 SODEV := libbmusb.so
 SONAME := libbmusb.so.6
@@ -40,11 +42,11 @@ install: all
 		$(DESTDIR)$(LIBDIR) \
 		$(DESTDIR)$(LIBDIR)/pkgconfig \
 		$(DESTDIR)$(PREFIX)/include/bmusb \
-		$(DESTDIR)/lib/udev/rules.d
+		$(DESTDIR)$(UDEVDIR)/rules.d
 	$(INSTALL) -m 755 -o root -g root $(LIB) $(SOLIB) $(DESTDIR)$(LIBDIR)
 	$(LN) -sf $(SOLIB) $(DESTDIR)$(LIBDIR)/$(SONAME)
 	$(LN) -sf $(SOLIB) $(DESTDIR)$(LIBDIR)/$(SODEV)
 	$(INSTALL) -m 755 -o root -g root bmusb/bmusb.h bmusb/fake_capture.h $(DESTDIR)$(PREFIX)/include/bmusb
 	$(INSTALL) -m 644 -o root -g root bmusb.pc $(DESTDIR)$(LIBDIR)/pkgconfig
-	$(INSTALL) -m 644 -o root -g root 70-bmusb.rules $(DESTDIR)/lib/udev/rules.d
+	$(INSTALL) -m 644 -o root -g root 70-bmusb.rules $(DESTDIR)$(UDEVDIR)/rules.d
 
-- 
2.39.2