# Makefile for marsond. Should be fine with any make (GNU, BSD, etc).

# Remember, all these assignments, you can override on the make
# command line rather than editing this file. Examples:
# make CC=clang CFLAGS=-O3
# make install PREFIX=/usr/local

### Project information.
PROJ=marsond
VERSION=0.3.0

### Compile-time option.

# If you change this, yse the full path. It changes the
# default for the -k option.
DEFAULT_KBD=/dev/input/by-id/usb-Marson_Marson_Keyboard_and_Mouse_Link_Ver:ps2120L-event-kbd

# USB vendor and product IDs don't get baked into the binary,
# they only affect the udev rule.
VENDOR_ID=04b4
PRODUCT_ID=0101

### Compiler and options.

# C compiler. clang, pcc, and tcc also work.
CC=gcc

COPT=-O2
CWARN=-Wall
CDEFS=-DVERSION='"$(VERSION)"' -D DEFAULT_KBD='"$(DEFAULT_KBD)"'
CFLAGS=-std=c99 $(COPT) $(CWARN) $(CDEFS)

### Install paths. Not compiled into the binary.

# These are appropriate for Slackware. Most other distros will need
# MANDIR=$(PREFIX)/share/man, and DOCDIR=$(PREFIX)/share/doc/marsond.
PREFIX=/usr
SBINDIR=$(PREFIX)/sbin
MANDIR=$(PREFIX)/man
MAN8DIR=$(MANDIR)/man8
DOCDIR=/usr/doc/$(PROJ)-$(VERSION)
UDEVDIR=/etc/udev/rules.d

INSTALL=install
INSTALL_FILE=$(INSTALL) -m0644
INSTALL_MAN=$(INSTALL_FILE)
INSTALL_UDEV=$(INSTALL_FILE)
INSTALL_DOC=$(INSTALL_FILE)
INSTALL_BIN=$(INSTALL) -s -m0755

# Build with GZIP=false to avoid gzipping the man page.
GZIP=gzip -9

# When building a Slackware package, use RULESUFFIX=.new
RULESUFFIX=

### No user-serviceable parts below (I hope).
all: $(PROJ) $(PROJ).8 99-$(PROJ).rules

$(PROJ): $(PROJ).c usage.c

usage.c: mkusage.pl $(PROJ).8
	perl mkusage.pl $(PROJ).rst > usage.c

ver.rst: Makefile
	echo '.. |version| replace:: $(VERSION)' > ver.rst

$(PROJ).8: $(PROJ).rst ver.rst
	rst2man $(PROJ).rst > $(PROJ).8

99-$(PROJ).rules:
	sed -e 's,@SBINDIR@,$(SBINDIR),' \
	    -e 's,@VENDOR_ID@,$(VENDOR_ID),' \
	    -e 's,@PRODUCT_ID@,$(PRODUCT_ID),' \
	< 99-$(PROJ).rules.in > 99-$(PROJ).rules

clean:
	rm -f $(PROJ) core *.o

realclean: clean
	rm -f $(PROJ).8 usage.c 99-marsond.rules

# this is a "private" target, not expected to work on random systems.
# It specifically works on Slackware 15.0, if the system/musl package
# from SlackBuilds.org is installed.
static: clean
	$(MAKE) CC=musl-gcc COPT="-Os -static -nostdinc -isystem /usr/include/musl -isystem /usr/include -Wl,-s"
	mv $(PROJ) $(PROJ).static

install: all
	mkdir -p $(DESTDIR)/$(SBINDIR) $(DESTDIR)/$(MAN8DIR) $(DESTDIR)/$(UDEVDIR) $(DESTDIR)/$(DOCDIR)
	$(INSTALL_BIN) $(PROJ) $(DESTDIR)/$(SBINDIR)
	$(INSTALL_MAN) $(PROJ).8 $(DESTDIR)/$(MAN8DIR)
	$(GZIP) $(DESTDIR)/$(MAN8DIR)/$(PROJ).8 || true
	$(INSTALL_UDEV) 99-$(PROJ).rules $(DESTDIR)/$(UDEVDIR)/99-$(PROJ).rules$(RULESUFFIX)
	$(INSTALL_DOC) README TODO LICENSE CHANGES $(DESTDIR)/$(DOCDIR)