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# nullshell - do nothing but print asterisks, can be used for login shell
PREFIX := /usr
# commands
CC := gcc
CP := cp
INSTALL := install
MD := markdown
RM := rm
# flags
CFLAGS += -std=c11 -O2 -fPIC -Wall -Werror
LDFLAGS += -Wl,-z,now -Wl,-z,relro -pie
# this is just a fallback in case you do not use git but downloaded
# a release tarball...
VERSION := 0.0.6
all: nullshell README.html
nullshell: nullshell.c config.h version.h
$(CC) $(CFLAGS) $(LDFLAGS) -o nullshell nullshell.c
version.h: $(wildcard .git/HEAD .git/index .git/refs/tags/*) Makefile
printf "#ifndef VERSION\n#define VERSION \"%s\"\n#endif\n" $(shell git describe --long 2>/dev/null || echo ${VERSION}) > $@
config.h:
$(CP) config.def.h config.h
README.html: README.md
$(MD) README.md > README.html
install: install-bin install-doc
install-bin: nullshell
$(INSTALL) -D -m0755 nullshell $(DESTDIR)$(PREFIX)/bin/nullshell
install-doc: README.html
$(INSTALL) -D -m0755 README.md $(DESTDIR)$(PREFIX)/share/doc/nullshell/README.md
$(INSTALL) -D -m0755 README.html $(DESTDIR)$(PREFIX)/share/doc/nullshell/README.html
clean:
$(RM) -f README.html nullshell version.h
distclean:
$(RM) -f README.html nullshell version.h config.h
release:
git archive --format=tar.xz --prefix=nullshell-$(VERSION)/ $(VERSION) > nullshell-$(VERSION).tar.xz
gpg -ab nullshell-$(VERSION).tar.xz
git notes --ref=refs/notes/signatures/tar add -C $$(git archive --format=tar --prefix=nullshell-$(VERSION)/ $(VERSION) | gpg --armor --detach-sign | git hash-object -w --stdin) $(VERSION)
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