Improve makefile

Almost fully (to the greatest extent possible) portable.
Do not rebuild everything everytime a .c file is added.
However, there is some minor oddities to allow use of -j.

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 109 insertions, 0 deletions

diff --git a/blind.mk b/blind.mk
new file mode 100644
index 0000000..ac30c20
--- /dev/null
+++ b/blind.mk
@@ -0,0 +1,109 @@
+.POSIX:
+
+CONFIGFILE = config.mk
+
+SCRIPTS    = $(SH_SCRIPTS) $(KSH_SCRIPTS)
+MAN1       = $(BIN:=.1) $(SCRIPTS:=.1)
+MAN7       = blind.7
+BOBJ       = $(BIN:=.bo)
+OBJ        = $(BIN:=.o) $(COMMON_OBJ)
+
+DIST_MAN   = $(MAN1) $(MAN7)
+DIST_MISC  = $(HDR) $(SRC) $(SCRIPTS) $(MISCFILES) $(EXAMPLEFILES)
+
+DEPS       = build/common-files.mk blind.mk $(CONFIGFILE)
+MCB_DEPS   = build/files.mk $(DEPS)
+
+include $(CONFIGFILE)
+include build/files.mk
+include build/common-files.mk
+
+all: $(BIN)
+mcb: blind-mcb
+
+$(BIN): $(@:=.o) $(COMMON_OBJ) $(DEPS)
+.o:
+	$(CC) -o $@ $< $(COMMON_OBJ) $(LDFLAGS)
+
+$(OBJ): src/$(@:.o=:c) $(HDR) build/platform.h $(DEPS)
+$(OBJ):
+	$(CC) $(CFLAGS) -c -o $$$$.$@ src/$*.c && mv $$$$.$@ $@
+
+build/blind-mcb.o: $(MCB_DEPS)
+.c.o:
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(BOBJ): src/$(@:.bo=:c) $(HDR) build/platform.h $(DEPS)
+$(BOBJ):
+	$(CC) $(CFLAGS) -Dmain="$$(printf 'main_%s\n' $* | tr -- - _)" -c -o $@ src/$*.c
+
+build/blind-mcb.c: $(MCB_DEPS)
+	mkdir -p $(@D)
+	printf '#include <%s.h>\n' stdio string > $@
+	printf 'int main_%s(int argc, char *argv[]);\n' $(BIN) | tr -- - _ >> $@
+	printf 'int main(int argc, char *argv[]) {\n' >> $@
+	printf 'char *cmd = strrchr(*argv, '"'/'"');\n' >> $@
+	printf 'cmd = cmd ? &cmd[1] : *argv;\n' >> $@
+	set -e && for c in $(BIN); do \
+		printf 'if (!strcmp(cmd, "%s"))\n\treturn main_%s(argc, argv);\n' "$$c" "$$c" | \
+			sed '/^\t/s/-/_/g'; \
+	done >> $@
+	printf 'fprintf(stderr, "Invalid command: %%s\\n", cmd);\n' >> $@
+	printf 'return 1;\n' >> $@
+	printf '}\n' >> $@
+
+blind-mcb: build/blind-mcb.o $(BOBJ) $(COMMON_OBJ) $(MCB_DEPS)
+	$(CC) -o $@ build/blind-mcb.o $(BOBJ) $(COMMON_OBJ) $(LDFLAGS)
+
+build/generate-macros: src/generate-macros.c $(DEPS)
+	@mkdir -p -- $(@D)
+	$(CC) $(CFLAGS) -o $@.$$$$ src/generate-macros.c $(LDFLAGS) && mv $@.$$$$ $@
+
+src/../build/platform.h: build/platform.h
+build/platform.h: build/generate-macros $(DEPS)
+	@mkdir -p -- $(@D)
+	build/generate-macros > $@.$$$$ && mv $@.$$$$ $@
+
+install: all install-common
+	cp -f -- $(BIN) "$(DESTDIR)$(PREFIX)/bin"
+	cd -- "$(DESTDIR)$(PREFIX)/bin" && chmod 755 $(BIN)
+
+install-mcb: mcb install-common
+	for c in $(BIN); do \
+		$(LN) -f -- blind-single-colour "$(DESTDIR)$(PREFIX)/bin/$$c"; done
+	rm -f -- "$(DESTDIR)$(PREFIX)/bin/blind-single-colour"
+	cp -f -- blind-mcb "$(DESTDIR)$(PREFIX)/bin/blind-single-colour"
+	cd -- "$(DESTDIR)$(PREFIX)/bin" && chmod 755 -- blind-single-colour
+
+install-common:
+	mkdir -p -- "$(DESTDIR)$(PREFIX)/bin"
+	mkdir -p -- "$(DESTDIR)$(MANPREFIX)/man1"
+	mkdir -p -- "$(DESTDIR)$(MANPREFIX)/man7"
+	cp -f -- $(SCRIPTS) "$(DESTDIR)$(PREFIX)/bin"
+	cd -- "$(DESTDIR)$(PREFIX)/bin" && sed -i '1s:bash$$:$(KORN_SHELL):' $(KSH_SCRIPTS)
+	cd -- "$(DESTDIR)$(PREFIX)/bin" && chmod 755 -- $(SCRIPTS)
+	set -e && for m in $(MAN); do \
+		sed '1s/ blind$$/ " blind $(VERSION)"/g' \
+		< "man/$$(basename $$m)" > "$(DESTDIR)$(MANPREFIX)/$$m"; \
+	done
+	cd -- "$(DESTDIR)$(MANPREFIX)" && chmod 644 $(MAN)
+
+uninstall:
+	cd -- "$(DESTDIR)$(PREFIX)/bin" && rm -f $(BIN) $(SCRIPTS)
+	cd -- "$(DESTDIR)$(MANPREFIX)" && rm -f $(MAN)
+
+dist:
+	-rm -rf "blind-$(VERSION)"
+	mkdir -p "blind-$(VERSION)"
+	cd "blind-$(VERSION)" && mkdir -p src/util man $(EXAMPLEDIRS)
+	cd man && cp $(DIST_MAN) "../blind-$(VERSION)/man"
+	set -e && for s in $(DIST_MISC); do cp "$$s" "../blind-$(VERSION)/$$s"; done
+	tar -cf "blind-$(VERSION).tar" "blind-$(VERSION)"
+	gzip -9 "blind-$(VERSION).tar"
+	rm -rf "blind-$(VERSION)"
+
+.SUFFIXES:
+.SUFFIXES: .o .bo .c
+
+.PHONY: all mcb install install-mcb install-common uninstall dist
+.PRECIOUS: $(COMMON_OBJ) build/platform.h