# makefile for helm.

# Author: Michael Markert.
# Copyright (C) 2011~2012, Michael Markert, all rights reserved.

## This file is NOT part of GNU Emacs
##
## License
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3, or (at your option)
## any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; see the file COPYING.  If not, write to
## the Free Software Foundation, Inc., 51 Franklin Street, Fifth
## Floor, Boston, MA 02110-1301, USA.

# Emacs invocation
EMACS_COMMAND   := emacs

# Use -q to have /usr/local/share/emacs/site-lisp and subdirs in load-path
EMACS		:= $(EMACS_COMMAND) -q -batch

EVAL := $(EMACS) --eval

PKGDIR := .

# Additional emacs loadpath
LOADPATH	:= -L $(PKGDIR)

# Prefer emacs config folder in XDG_CONFIG_HOME to ~/.emacs.d
# Assume emacs-user-directory is ~/.emacs.d
# Try to find ELPA directory or STRAIGHT directory.
XDG_ELPA_DIR	:= $(if $(XDG_CONFIG_HOME), $(XDG_CONFIG_HOME)/emacs/elpa, $(HOME)/.config/emacs/elpa)
ELPA_DIR := $(if $(shell test -d $(XDG_ELPA_DIR)), $(XDG_ELPA_DIR), $(HOME)/.emacs.d/elpa)

XDG_STRAIGHT_DIR := $(if $(XDG_CONFIG_HOME), $(XDG_CONFIG_HOME)/emacs/straight/build, $(HOME)/.config/emacs/straight/build)
STRAIGHT_DIR := $(if $(shell test -d $(XDG_STRAIGHT_DIR)), $(XDG_STRAIGHT_DIR), $(HOME)/.emacs.d/straight/build)

ASYNC_ELPA_DIR  =  $(shell \
	test -d $(ELPA_DIR) && \
	find -L $(ELPA_DIR) -maxdepth 1 -regex '.*/async-[.0-9]*' 2> /dev/null | \
	sort | tail -n 1)
ifneq "$(ASYNC_ELPA_DIR)" ""
	LOADPATH += -L $(ASYNC_ELPA_DIR)
endif

ASYNC_STRAIGHT_DIR  =  $(shell \
	test -d $(STRAIGHT_DIR) && \
	find -L $(STRAIGHT_DIR) -maxdepth 1 -regex '.*/async' 2> /dev/null | \
	sort | tail -n 1)
ifneq "$(ASYNC_STRAIGHT_DIR)" ""
	LOADPATH += -L $(ASYNC_STRAIGHT_DIR)
endif

# Files to compile
EL			:= $(sort $(wildcard helm*.el))

# Compiled files
ELC			:= $(EL:.el=.elc)


.PHONY: clean autoloads batch-compile

all: clean autoloads batch-compile

$(ELC): %.elc: %.el
	$(EMACS) $(LOADPATH) -f batch-byte-compile $<

# Compile needed files
compile: $(ELC)

# Compile all files at once
batch-compile:
	$(EMACS) $(LOADPATH) -f batch-byte-compile $(EL)

# Remove all generated files
clean:
	rm -f $(ELC)

# Make autoloads file
autoloads:
	$(EVAL) "(progn (setq generated-autoload-file (expand-file-name \"helm-autoloads.el\" \"$(PKGDIR)\")) \
(setq backup-inhibited t) (update-directory-autoloads \"$(PKGDIR)\"))"

PREFIX=/usr/local/
BIN=${PREFIX}bin/
DESTDIR=${PREFIX}share/emacs/site-lisp/helm/
install:
	test -d ${DESTDIR} || mkdir ${DESTDIR}
	rm -f ${DESTDIR}*.el
	rm -f ${DESTDIR}*.elc
	cp -f *.el $(DESTDIR)
	cp -f *.elc $(DESTDIR)
	cp -f helm-autoloads.el $(DESTDIR)
	cp -f emacs-helm.sh $(DESTDIR)
	ln -fs ${DESTDIR}emacs-helm.sh ${BIN}helm
uninstall:
	rm -vf ${DESTDIR}*.elc
	rm -vf ${DESTDIR}*.el
	rm -vf ${DESTDIR}emacs-helm.sh
	rm -vf ${BIN}helm