Recursive Make Considered Harmful
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albert
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149
Makefile
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149
Makefile
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# procps Makefile
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# Albert Cahalan, 2002
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#
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# Recursive make is considered harmful:
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# http://google.com/search?q=%22recursive+make+considered+harmful%22
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#
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# For now this Makefile uses explicit dependencies. The project
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# hasn't grown big enough to need something complicated, and the
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# dependency tracking files are an ugly annoyance.
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#
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# This file includes */module.mk files which add on to variables:
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# FOO += bar/baz
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VERSION := 3
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SUBVERSION := 0
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MINORVERSION := 1
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LIBVERSION := 3.0.1
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############ vars
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# so you can disable them or choose alternates
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ldconfig := ldconfig
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ln-f := ln -f
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ln-sf := ln -sf
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install := install --owner 0 --group 0
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usr/bin := $(DESTDIR)/usr/bin/
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bin := $(DESTDIR)/bin/
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sbin := $(DESTDIR)/sbin/
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usr/proc/bin := $(DESTDIR)/usr/bin/
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man1 := $(DESTDIR)/usr/share/man/man1/
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man5 := $(DESTDIR)/usr/share/man/man5/
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man8 := $(DESTDIR)/usr/share/man/man8/
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etc/X11/applnk/Utilities := $(DESTDIR)/etc/X11/applnk/Utilities/
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usr/X11R6/bin := $(DESTDIR)/usr/X11R6/bin/
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lib := $(DESTDIR)/lib/
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usr/lib := $(DESTDIR)/usr/lib/
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usr/include := $(DESTDIR)/usr/include/
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BINFILES := $(usr/bin)uptime $(usr/bin)tload $(usr/bin)free $(usr/bin)w \
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$(usr/bin)top $(usr/bin)vmstat $(usr/bin)watch $(usr/bin)skill \
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$(usr/bin)snice $(bin)kill $(sbin)sysctl \
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$(usr/proc/bin)pgrep $(usr/proc/bin)pkill
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SCRFILES := $(etc/X11/applnk/Utilities)top.desktop $(usr/X11R6/bin)XConsole
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MANFILES := $(man1)uptime.1 $(man1)tload.1 $(man1)free.1 $(man1)w.1 \
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$(man1)top.1 $(man1)watch.1 $(man1)skill.1 $(man1)kill.1 \
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$(man1)snice.1 $(man1)pgrep.1 $(man1)pkill.1 \
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$(man5)sysctl.conf.5 $(man8)vmstat.8 $(man8)sysctl.8
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CURSES := -I/usr/include/ncurses -lncurses
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LDFLAGS := -Wl,-warn-common
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CFLAGS := -D_GNU_SOURCE -O2 -g3 -fno-common -ffast-math -I proc \
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-Wcast-align -Wconversion -Wredundant-decls \
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-Wbad-function-cast -Wcast-qual -Wwrite-strings -Waggregate-return \
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# -Wpadded -Wunreachable-code -Wdisabled-optimization \
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-W -Wall -Wstrict-prototypes -Wshadow -Wmissing-prototypes
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############ misc.
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# free.c pmap.c sysctl.c uptime.c vmstat.c watch.c pgrep.c skill.c tload.c top.c w.c
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# utmp.c oldtop.c tmp-junk.c minimal.c
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.SUFFIXES:
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.SUFFIXES: .a .o .c .s .h
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.PHONY: all clean do_all install # ps
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ALL := $(notdir $(BINFILES))
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CLEAN := $(notdir $(BINFILES))
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DIRS :=
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INSTALL := $(BINFILES) $(MANFILES) $(SCRFILES)
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# want this rule first, use := on ALL, and ALL not filled in yet
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all: do_all
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-include */module.mk
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do_all: $(ALL)
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junk := DEADJOE *~ *.o core gmon.out
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# Remove $(junk) from all $(DIRS)
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CLEAN += $(junk) $(foreach dir,$(DIRS),$(addprefix $(dir), $(junk)))
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# Unfortunately the program and directory name are the same.
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# So ps is a .PHONY that depends on ps/ps.
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#ps: ps/ps
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# @echo MAKEFILE WANTS TO MAKE PS
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#
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#SRC :=
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#OBJ := $(patsubst %.c,%.o, $(filter %.c,$(SRC)))
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#
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#ifneq ($(MAKECMDGOALS),clean)
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#-include $(OBJ:.o=.d)
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#endif
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#
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#%.d: %.c
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# depend.sh $(CFLAGS) $< > $@
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clean:
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rm -f $(CLEAN)
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###### install
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$(BINFILES) : $(@F)
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$(install) --mode a=rx --strip $< $@
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$(SCRFILES) : $(@F)
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$(install) --mode a=rx $< $@
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$(MANFILES) : $(@F)
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$(install) --mode a=r $< $@
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install: $(INSTALL)
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cd $(usr/bin) && ($(ln-f) skill snice; $(ln-f) skill kill; $(ln-f) pgrep pkill)
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############ prog.c --> prog.o
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%.o : %.c
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$(CC) $(CFLAGS) -c -o $@ $^
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w.o: w.c
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$(CC) $(CFLAGS) $(W_SHOWFROM) -c $<
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############ prog.o --> prog
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w uptime tload free vmstat utmp pgrep skill: % : %.o $(LIBPROC)
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$(CC) $(LDFLAGS) -o $@ $^
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top: % : %.o $(LIBPROC)
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$(CC) $(LDFLAGS) -o $@ $^ $(CURSES)
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watch: % : %.o
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$(CC) $(LDFLAGS) -o $@ $^ $(CURSES)
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############ progX --> progY
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snice kill: skill
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$(ln-f) skill $@
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pkill: pgrep
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$(ln-f) pgrep pkill
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