# Make gzip (GNU zip).

# Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2023 Free Software Foundation,
# Inc.

# 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 of the License, 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; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

ALL_RECURSIVE_TARGETS =
BUILT_SOURCES =

SUBDIRS = lib doc . tests
AM_CPPFLAGS = -I$(top_srcdir)/lib
AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS)

# Tell the linker to omit references to unused shared libraries.
AM_LDFLAGS = $(IGNORE_UNUSED_LIBRARIES_CFLAGS)

noinst_LIBRARIES = libver.a
nodist_libver_a_SOURCES = version.c version.h
DISTCLEANFILES = version.c version.h

if LESS
ZLESS_MAN = zless.1
ZLESS_PROG = zless
else
ZLESS_MAN =
ZLESS_PROG =
endif

man_MANS = gunzip.1 gzexe.1 gzip.1 \
  zcat.1 zcmp.1 zdiff.1 zforce.1 zgrep.1 $(ZLESS_MAN) zmore.1 znew.1

EXTRA_DIST = $(ACINCLUDE_INPUTS) $(man_MANS) \
  ChangeLog-2007 \
  cfg.mk	\
  dist-check.mk	\
  algorithm.doc \
  gunzip.in gzexe.in gzip.doc \
  revision.h sample/makecrc.c \
  sample/ztouch sample/add.c sample/sub.c sample/zread.c sample/zfile \
  tailor.h \
  zcat.in zcmp.in zdiff.in \
  zegrep.in zfgrep.in zforce.in zgrep.in zless.in zmore.in znew.in
noinst_HEADERS = gzip.h lzw.h

bin_PROGRAMS = gzip
bin_SCRIPTS = gunzip gzexe zcat zcmp zdiff \
  zegrep zfgrep zforce zgrep $(ZLESS_PROG) zmore znew
gzip_SOURCES = \
  bits.c deflate.c gzip.c inflate.c \
  trees.c unlzh.c unlzw.c unpack.c unzip.c util.c zip.c
gzip_LDADD = libver.a lib/libgzip.a
gzip_LDADD += $(LIB_CLOCK_GETTIME) $(LIB_FDATASYNC)
# gnulib-tool also recommends $(LIB_MBRTOWC) and $(LIBINTL), but
# modules needing those libraries are avoided so the libraries can be omitted.
if IBM_Z_DFLTCC
gzip_SOURCES += dfltcc.c
endif

BUILT_SOURCES += version.c
version.c: Makefile
	$(AM_V_GEN)rm -f $@
	$(AM_V_at)printf '#include <config.h>\n' > $@t
	$(AM_V_at)printf 'char const *Version = "$(PACKAGE_VERSION)";\n' >> $@t
	$(AM_V_at)chmod a-w $@t
	$(AM_V_at)mv $@t $@

BUILT_SOURCES += version.h
version.h: Makefile
	$(AM_V_GEN)rm -f $@
	$(AM_V_at)printf 'extern char const *Version;\n' > $@t
	$(AM_V_at)chmod a-w $@t
	$(AM_V_at)mv $@t $@

gzip.doc: gzip.1
	$(AM_V_GEN)groff -man -Tascii $(srcdir)/gzip.1 | col -b | uniq > $@-t \
	  && mv $@-t $(srcdir)/gzip.doc

gzip.doc.gz: gzip.doc $(bin_PROGRAMS)
	$(AM_V_GEN)./gzip < $(srcdir)/gzip.doc >$@-t && mv $@-t $@

SUFFIXES = .in
.in:
	$(AM_V_GEN)rm -f $@-t $@ \
	  && sed \
		-e 's|/bin/sh|$(SHELL)|g' \
		-e 's|[@]GREP@|$(GREP)|g' \
		-e "s|'gzip'|$(GZIP_TRANSFORMED)|g" \
		-e "s|'zdiff'|$(ZDIFF_TRANSFORMED)|g" \
		-e "s|'zgrep'|$(ZGREP_TRANSFORMED)|g" \
		-e 's|[@]VERSION@|$(VERSION)|g' \
		$(srcdir)/$@.in >$@-t \
	  && chmod a=rx $@-t \
	  && mv $@-t $@

# Arrange so that .tarball-version appears only in the distribution
# tarball, and never in a checked-out repository.
dist-hook: gen-ChangeLog
	$(AM_V_GEN)echo $(VERSION) > $(distdir)/.tarball-version

gen_start_date = 2008-01-01
.PHONY: gen-ChangeLog
gen-ChangeLog:
	$(AM_V_GEN)if test -d .git; then				\
	  $(top_srcdir)/build-aux/gitlog-to-changelog			\
	    --since=$(gen_start_date) > $(distdir)/cl-t &&		\
	    { rm -f $(distdir)/ChangeLog &&				\
	      mv $(distdir)/cl-t $(distdir)/ChangeLog; }		\
	fi

# Prepend "." to $PATH:
new_path = PATH=.$(PATH_SEPARATOR)$$PATH

# A simple test, just of gzip -- more of a sanity check than anything else.
FILES_TO_CHECK = $(bin_SCRIPTS) \
  $(top_srcdir)/ChangeLog $(top_srcdir)/configure $(top_srcdir)/gzip.c
check-local: $(FILES_TO_CHECK) $(bin_PROGRAMS) gzip.doc.gz
	$(AM_V_GEN)$(new_path); { test '$(srcdir)' != . \
				    || zdiff gzip.doc.gz; }
	$(AM_V_at)$(new_path); zdiff $(srcdir)/gzip.doc $(srcdir)/gzip.doc
	$(AM_V_at)$(new_path); zdiff $(srcdir)/gzip.doc gzip.doc.gz
	$(AM_V_at)$(new_path); zdiff - $(srcdir)/gzip.doc <gzip.doc.gz
	$(AM_V_at)$(new_path); zdiff gzip.doc.gz gzip.doc.gz
	$(AM_V_at)$(new_path); zgrep -iV >/dev/null
	$(AM_V_at)$(new_path);				\
	for opt in --rsyncable '' -1 -9; do		\
          for file in $(FILES_TO_CHECK); do		\
            gzip $$opt -c -- "$$file"			\
              | gzip -d | cmp - "$$file" || exit 1;	\
          done;						\
	done

install-exec-hook: remove-installed-links
install-exec-hook remove-installed-links:
	@for prog_ext in $(bin_PROGRAMS) $(bin_SCRIPTS); do \
	  prog=`echo "$$prog_ext"|sed 's/$(EXEEXT)$$//'`; \
	  case $$prog in \
	  gunzip) aliases='uncompress';; \
	  *) continue;; \
	  esac; \
	  transform='$(transform)'; \
	  test "X$$prog" = "X$$prog_ext" || \
	    transform="$$transform"';s/$$/$(EXEEXT)/'; \
	  destbindir=$(DESTDIR)$(bindir); \
	  source=`echo "$$prog"|sed "$$transform"`; \
	  for alias in $$aliases; do \
	    dest=`echo "$$alias"|sed "$$transform"`; \
	    (set -x; \
	     cd "$$destbindir" && \
	     rm -f "$$dest" && \
	     case $@ in \
	     install-exec-hook) \
	       ln "$$source" "$$dest" || $(LN_S) "$$source" "$$dest";; \
	     esac \
	    ) || exit; \
	  done; \
	done

uninstall-local: remove-installed-links

ALL_RECURSIVE_TARGETS += distcheck-hook
distcheck-hook:
	$(MAKE) my-distcheck

MAINTAINERCLEANFILES = gzip.doc

MOSTLYCLEANFILES = _match.i match_.s _match.S gzip.doc.gz \
  gunzip gzexe zcat zcmp zdiff zegrep zfgrep zforce zgrep zless zmore znew

# gzip, zdiff and zgrep are used by installed scripts, and installed names
# might be transformed by 'configure' options like --program-transform-name.
# Create executabls in the current directory by the transformed names,
# for the benefit of 'make check'.
if GZIP_IS_TRANSFORMED
BUILT_SOURCES += $(GZIP_TRANSFORMED)
MOSTLYCLEANFILES += $(GZIP_TRANSFORMED)
$(GZIP_TRANSFORMED):
	printf '%s\n' >'$@' \
	  '#!$(SHELL)' \
	  'exec '\''$(abs_top_builddir)/gzip'\'' "$$@"'
	chmod a+x $@
endif
if ZDIFF_IS_TRANSFORMED
BUILT_SOURCES += $(ZDIFF_TRANSFORMED)
MOSTLYCLEANFILES += $(ZDIFF_TRANSFORMED)
$(ZDIFF_TRANSFORMED):
	printf '%s\n' >'$@' \
	  '#!$(SHELL)' \
	  'exec '\''$(abs_top_builddir)/zdiff'\'' "$$@"'
	chmod a+x $@
endif
if ZGREP_IS_TRANSFORMED
BUILT_SOURCES += $(ZGREP_TRANSFORMED)
MOSTLYCLEANFILES += $(ZGREP_TRANSFORMED)
$(ZGREP_TRANSFORMED):
	printf '%s\n' >'$@' \
	  '#!$(SHELL)' \
	  'exec '\''$(abs_top_builddir)/zgrep'\'' "$$@"'
	chmod a+x $@
endif