Makefile

# Author: Eric Pruitt (https://www.codevat.com)
# License: BSD 2-Clause (http://opensource.org/licenses/BSD-2-Clause)
.POSIX:

CC = cc
PREFIX = $(HOME)
SUPERUSER_PREFIX = /usr/local
RUN_COMMAND_AS_ROOT = $$( \
	{ command -v sudo && echo "/bin/sh"; } || \
	{ command -v doas && echo "/bin/sh"; } || \
	echo "su root" \
) -c

DMENU_URL = http://git.suckless.org/dmenu
DMENU_COMMIT = e90b88e12a88d6214c00d5ee58ceb69446aa5ac4

DWM_URL = http://git.suckless.org/dwm
DWM_COMMIT = bb3bd6fec37174e8d4bb9457ca815c00609e5157

SLOCK_URL = http://git.suckless.org/slock
SLOCK_COMMIT = 2d2a21a90ad1b53594b1b90b97486189ec54afce

ST_URL = https://git.suckless.org/st
ST_COMMIT = 8ab629031bd958d93deee9203fea32c38fe8ac30

USER_LAUNCHER_ENTRIES = \
	st \

CONFIG_TARGETS = \
	$(HOME)/.config/Trolltech.conf \
	$(HOME)/.del \
	$(HOME)/.fonts.conf \
	$(HOME)/.gimp/sessionrc \
	$(HOME)/.gtkrc-2.0 \
	$(HOME)/.xsession \
	$(TERMINFO)/s/st \

# When installing the default GIMP session configuration, "gimp --version" is
# used to find out which version of GIMP is installed since the configuration
# path is version dependent. If GIMP has not been installed, this value is used
# as the fallback version number.
FALLBACK_GIMP_VERSION = 2.8

UTILITIES = \
	bin/blackwalls \
	bin/del \
	bin/statusline \
	bin/xidletime \

BASENAME = $(@F)

.SILENT: all deps clean cleaner config.mk install printvar

# The default target handles fetching, patching and reverting (cleaning)
# external repositories. Targets matching "patch-*" will result in "*-src"
# being patched if there are patches available for it. Targets matching
# "clean-*" will result in "*" being cleaned or, when that path does not exist
# "*-src" being cleaned. Targets ending in "*-src" will retch external
# dependencies.
.DEFAULT:
	@case "$${target:=$@}" in \
	  patch-*) \
		patch_prefix="$${target#patch-}"; \
		cd "$$patch_prefix"-src/; \
		if git diff --quiet \
		  $$(find . -name .git -prune -o -type f); then \
			for patch in ../patches/"$$patch_prefix"-*.diff; do \
				test -e "$$patch" || exit 0; \
				echo "- $${patch##*/}"; \
				patch < "$$patch"; \
			done; \
		fi; \
		cd "$$OLDPWD"; \
		$(MAKE) -s "$$patch_prefix-src/config.mk"; \
	  ;; \
	  clean-*) \
		target="$${target#clean-}"; \
		if ! cd "$$target" 2>/dev/null && \
		   ! cd "$$target"-*/ 2>/dev/null && \
		   ! -e "$$target"; then \
			echo "make: $@: path not found" >&2; \
			exit 1; \
		elif [ -n "$$OLDPWD" ] && [ -e .git ]; then \
			git stash save --quiet -u "make $@"; \
			rm -f config.mk; \
		else \
			echo "make: not sure how to clean '$$target'" >&2; \
			exit 1; \
		fi; \
	  ;; \
	  dmenu-src|dwm-src|slock-src|st-src) \
		prefix="$$(echo $${target%-src} | tr 'a-z-' 'A-Z_')"; \
		url="$$($(MAKE) -s printvar VARIABLE=$${prefix}_URL)"; \
		commit="$$($(MAKE) -s printvar VARIABLE=$${prefix}_COMMIT)"; \
		git clone "$$url" "$(BASENAME).tmp"; \
		(cd "$(BASENAME).tmp" && git reset --hard $$commit); \
		rm -f "$(BASENAME).tmp/config.mk"; \
		mv "$(BASENAME).tmp" "$(BASENAME)"; \
	  ;; \
	  *) \
		echo "make: $@: target not recognized" >&2; \
		exit 1; \
	  ;; \
	esac; \

# Compile all known binaries.
all:
	touch .MARK
	$(MAKE) -s dmenu dwm slock st $(UTILITIES)
	if [ "$(.TARGETS)" != "install" ] && \
	  [ "$(MAKECMDGOALS)" != "install" ] ; then \
		find . -name .git -prune -o -newer .MARK -type f -print \
		  | grep -q ^ || echo "make: all targets up to date"; \
	fi
	rm -f .MARK

# Install all compiled binaries.
install: all
	echo "PREFIX = $(PREFIX)"
	echo "SUPERUSER_PREFIX = $(SUPERUSER_PREFIX)"
	echo "- slock" && $(MAKE) -s $(SUPERUSER_PREFIX)/bin/slock
	test -e $(PREFIX)/bin || mkdir $(PREFIX)/bin
	for binary in "$$PWD/bin/"*; do \
		echo "- $${binary##*/}"; \
		test ! -h "$(PREFIX)/bin/$${binary##*/}" || continue; \
		ln -s "$$binary" $(PREFIX)/bin; \
	done
	$(MAKE) -s $(CONFIG_TARGETS)

# Install build dependencies.
deps:
	if [ -e /etc/debian_version ]; then \
		apt-get install \
			acpid \
			compton \
			fonts-dejavu \
			fonts-symbola \
			fonts-vlgothic \
			fonts-wqy-zenhei \
			gsfonts \
			gtk2-engines \
			libpam-dev \
			libx11-dev \
			libxft-dev \
			libxinerama-dev \
			libxrandr-dev \
			libxss-dev \
			moc \
			moc-ffmpeg-plugin \
			pkg-config \
			scrot \
			xdotool \
			yad \
			$$( \
				lspci | grep -i -q nvidia && echo nvidia-smi; \
			) \
		; \
	else \
		echo "Unsupported operating system." >&2; \
		exit 1; \
	fi; \

# Revert external repositories to a fresh state and delete compiled binaries.
clean:
	for folder in *-src; do \
		test -e "$$folder" || continue; \
		echo "- $$folder"; \
		$(MAKE) -s "clean-$$folder"; \
	done
	rm -f .MARK bin/*
	echo "Done cleaning."

# Delete all external source trees and compiled binaries.
cleaner:
	rm -rf .MARK *-src bin
	echo "All external source trees and compiled binaries deleted."

# Print the contents of a variable named $(VARIABLE).
printvar:
	echo '$($(VARIABLE))'

# Check each value in $(ARGS) to verify that the compilation toolchain supports
# it as a flag or include. If an argument starts with a "-", the argument is
# treated as a compiler flag. Otherwise, the argument is treated as a path to
# load using an "include" preprocessor directive. The compiler is only invoked
# once per argument, and if the inovcation succeeds, the argument is printed to
# standard output.
cc-test:
	trap 'rm -f -- a.out "$$src"' EXIT; \
	src=".temp.$$$$.c"; \
	for arg in $(ARGS); do \
		echo "int main(void) {}" > "$$src"; \
		test -z "$${arg%%-*}" || echo "#include <$$arg>" >> "$$src"; \
		$(CC) "$$src" $${arg##[!-]*} 2>/dev/null || continue; \
		printf "%s " "$$arg"; \
	done

# Print text that can be used to generate a config.mk file for suckless.org
# projects. This target assumes that the variables CFLAGS, LDFLAGS and CC flags
# are defined. A list of libraries supported by pkg-config can optionally be
# provided via LIBRARIES.
config.mk:
	echo CFLAGS = -std=c99 -pedantic -Wall -O3 -I.. \
		-D_DEFAULT_SOURCE '-DVERSION=\"edge\"' $(CFLAGS) \
		$$(test -z "$(LIBRARIES)" || pkg-config --cflags $(LIBRARIES))
	echo LDFLAGS = $(LDFLAGS) \
		$$(test -z "$(LIBRARIES)" || pkg-config --libs $(LIBRARIES))
	echo CC = $(CC)
	echo STCFLAGS = '$$(CFLAGS)'
	echo STLDFLAGS = '$$(LDFLAGS)'

# Dummy target used to ensure a recipe is always executed even if it is
# otherwise up to date.
ALWAYS_RUN:

$(HOME)/.config/Trolltech.conf: presentation/qt.conf
	cp $^ $@

$(HOME)/.del: $(PREFIX)/bin/del
	echo "- launcher list"
	printf "%s\n" $(USER_LAUNCHER_ENTRIES) | del -r > /dev/null

$(HOME)/.fonts.conf: presentation/fonts.conf
	test ! -h $@ || rm $@
	ln -s $(PWD)/$^ $@

$(HOME)/.gimp/sessionrc: presentation/gimp.sessionrc
	if ! [ -e $(@D) ]; then \
		major_minor_version="$$( \
		    LC_ALL=C gimp --version \
		    | sed -e 's/.* //' -e 's/^\([0-9]\+[.][0-9]\+\)[.].*/\1/' \
		)"; \
		test -n "$${major_minor_version:=$(FALLBACK_GIMP_VERSION)}"; \
		config_directory=".gimp-$$major_minor_version"; \
		mkdir -p $(HOME)/"$$config_directory"; \
		ln -s "$$config_directory" $(@D); \
	fi
	if [ -e $@ ]; then \
		touch $@; \
	else \
		cp $^ $@; \
	fi

$(HOME)/.gtkrc-2.0: presentation/gtk-2.0.gtkrc
	test ! -h $@ || rm $@
	ln -s $(PWD)/$^ $@

$(HOME)/.xsession: xsession
	test ! -h $@ || rm $@
	ln -s $(PWD)/$^ $@

$(TERMINFO)/s/st: st-src/st.info
	echo "- terminfo"
	tic -x st-src/st.info

# The combination of the "+" command prefix and "-n" is used to force make to
# display the command being executed even if "-s" is inherited from the
# invoking make.
$(UTILITIES): ALWAYS_RUN
	mkdir -p bin
	source="utilities/$(BASENAME).c"; \
	make=$$(./extract-recipe.sed "$$source"); \
	echo "$@: $$source; +$${make:?$@: recipe not found}" | $(MAKE) -n -f -

dmenu-src/config.mk dwm-src/config.mk:
	lxinerama="$$(pkg-config --silence-errors --libs xinerama)"; \
	$(MAKE) -s config.mk \
		CFLAGS="$${lxinerama:+-DXINERAMA}" \
		LDFLAGS="$$lxinerama $$($(MAKE) -s cc-test ARGS=-lrt)" \
		LIBRARIES="fontconfig x11 xft" \
	  > $@.tmp
	mv $@.tmp $@

dmenu-src/dmenu: dmenu-src ALWAYS_RUN
	ln -s -f ../dmenu-config.h dmenu-src/config.h
	$(MAKE) -s patch-dmenu
	(cd dmenu-src && $(MAKE) -s dmenu)

bin/dmenu: dmenu-src/dmenu
	mkdir -p bin
	cp -f $? $@

dmenu: bin/dmenu

dwm-src/dwm: dwm-src ALWAYS_RUN
	ln -s -f ../dwm-config.h dwm-src/config.h
	$(MAKE) -s patch-dwm
	(cd dwm-src && $(MAKE) -s dwm)

bin/dwm: dwm-src/dwm
	mkdir -p bin
	cp -f $? $@

dwm: bin/dwm

st-src/config.mk:
	$(MAKE) -s config.mk \
		CFLAGS="-D_XOPEN_SOURCE" \
		LDFLAGS="-lm -lutil $$($(MAKE) -s cc-test ARGS=-lrt)" \
		LIBRARIES="fontconfig x11 xft" \
	  > $@.tmp
	mv $@.tmp $@

st-src/st: st-src ALWAYS_RUN
	ln -s -f ../st-config.h st-src/config.h
	$(MAKE) -s patch-st
	(cd st-src && $(MAKE) -s st)

bin/st: st-src/st
	mkdir -p bin
	cp -f $? $@

st: bin/st

slock-src/config.mk:
	cc_shadow_h="$$($(MAKE) cc-test ARGS=shadow.h)"; \
	LDFLAGS="$$($(MAKE) cc-test ARGS='-lcrypt -lpam')"; \
	echo "$$LDFLAGS" | grep -q -e -lpam && pam_cflags="-DHAVE_PAM_AUTH"; \
	$(MAKE) -s config.mk \
		CFLAGS="$${pam_cflags:-} $${cc_shadow_h:+-DHAVE_SHADOW_H}" \
		LDFLAGS="$$LDFLAGS" \
		LIBRARIES="x11 xext xrandr" \
	  > $@.tmp
	uname | grep -qi openbsd || echo COMPATSRC = explicit_bzero.c >> $@.tmp
	mv $@.tmp $@

slock-src/slock: slock-src ALWAYS_RUN
	ln -s -f ../slock-config.h slock-src/config.h
	$(MAKE) -s patch-slock
	(cd slock-src && $(MAKE) -s slock)

slock: slock-src/slock

$(SUPERUSER_PREFIX)/bin/slock: slock-src/slock
	$(RUN_COMMAND_AS_ROOT) 'install -m 4755 -g 0 -o 0 $? $@'