PREFIX=/usr/local
BINDIR=$(PREFIX)/bin
MANDIR=$(PREFIX)/man
-SYSCONFDIR=/etc
PYTHON=/usr/bin/env python
+# set SYSCONFDIR to /etc if PREFIX=/usr or PREFIX=/usr/local
+ifeq ($(PREFIX),/usr)
+ SYSCONFDIR=/etc
+else
+ ifeq ($(PREFIX),/usr/local)
+ SYSCONFDIR=/etc
+ else
+ SYSCONFDIR=$(PREFIX)/etc
+ endif
+endif
+
install: youtube-dl youtube-dl.1 youtube-dl.bash-completion
install -d $(DESTDIR)$(BINDIR)
install -m 755 youtube-dl $(DESTDIR)$(BINDIR)