# Customize maint.mk                           -*- makefile -*-

# Copyright (C) 2009-2017 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, see <http://www.gnu.org/licenses/>.

# Cause the tool(s) built by this package to be used also when running

# commands via e.g., "make syntax-check".  Doing this a little sooner

# would have avoided a grep infloop bug.

export PATH := $(builddir)/src$(PATH_SEPARATOR)$(PATH)

# Used in maint.mk's web-manual rule

manual_title = GNU Grep: Print lines matching a pattern

# Use the direct link.  This is guaranteed to work immediately, while

# it can take a while for the faster mirror links to become usable.

url_dir_list = http://ftp.gnu.org/gnu/$(PACKAGE)

# Tests not to run as part of "make distcheck".

local-checks-to-skip =			\

  sc_texinfo_acronym

# Tools used to bootstrap this package, used for "announcement".

bootstrap-tools = autoconf,automake,gnulib

# Override the default Cc: used in generating an announcement.

announcement_Cc_ = $(translation_project_), $(PACKAGE)-devel@gnu.org

# The tight_scope test gets confused about inline functions.

# like 'to_uchar'.

_gl_TS_unmarked_extern_functions = main usage mb_clen to_uchar dfaerror dfawarn

# Now that we have better tests, make this the default.

export VERBOSE = yes

# Comparing tarball sizes compressed using different xz presets, we see

# that -6e adds only 60 bytes to the size of the tarball, yet reduces

# (from -9) the decompression memory requirement from 64 MiB to 9 MiB.

# Don't be tempted by -5e, since -6 and -5 use the same dictionary size.

# $ for i in {4,5,6,7,8,9}{e,}; do \

#     (n=$(xz -$i < grep-2.11.tar|wc -c);echo $n $i) & done |sort -nr

# 1236632 4

# 1162564 5

# 1140988 4e

# 1139620 6

# 1139480 7

# 1139480 8

# 1139480 9

# 1129552 5e

# 1127616 6e

# 1127556 7e

# 1127556 8e

# 1127556 9e

export XZ_OPT = -6e

old_NEWS_hash = a708c1088278e4d60e8e4ad2759228de

# Many m4 macros names once began with 'jm_'.

# Make sure that none are inadvertently reintroduced.

sc_prohibit_jm_in_m4:

	@grep -nE 'jm_[A-Z]'						\

		$$($(VC_LIST) m4 |grep '\.m4$$'; echo /dev/null) &&	\

	    { echo '$(ME): do not use jm_ in m4 macro names'		\

	      1>&2; exit 1; } || :

sc_prohibit_echo_minus_en:

	@prohibit='\

	halt='do not use echo ''-e or echo ''-n; use printf instead'	\

	  $(_sc_search_regexp)

# Look for lines longer than 80 characters, except omit:

# - program-generated long lines in diff headers,

# - the help2man script copied from upstream,

# - tests involving long checksum lines, and

# - the 'pr' test cases.

LINE_LEN_MAX = 80

FILTER_LONG_LINES =							\

  /^[^:]*\.diff:[^:]*:@@ / d;						\

  \|^[^:]*TODO:| d;							\

  \|^[^:]*man/help2man:| d;						\

  \|^[^:]*tests/misc/sha[0-9]*sum.*\.pl[-:]| d;				\

  \|^[^:]*tests/pr/|{ \|^[^:]*tests/pr/pr-tests:| !d; };

sc_long_lines:

	@files=$$($(VC_LIST_EXCEPT))					\

	halt='line(s) with more than $(LINE_LEN_MAX) characters; reindent'; \

	for file in $$files; do						\

	  expand $$file | grep -nE '^.{$(LINE_LEN_MAX)}.' |		\

	  sed -e "s|^|$$file:|" -e '$(FILTER_LONG_LINES)';		\

	done | grep . && { msg="$$halt" $(_sc_say_and_exit) } || :

# Indent only with spaces.

sc_prohibit_tab_based_indentation:

	@prohibit='^ *	'						\

	halt='TAB in indentation; use only spaces'			\

	  $(_sc_search_regexp)

# Don't use "indent-tabs-mode: nil" anymore.  No longer needed.

sc_prohibit_emacs__indent_tabs_mode__setting:

	@prohibit='^( *[*#] *)?indent-tabs-mode:'			\

	halt='use of emacs indent-tabs-mode: setting'			\

	  $(_sc_search_regexp)

# Ensure that the list of test file names in tests/Makefile.am is sorted.

sc_sorted_tests:

	@perl -0777 -ne \

	    '/^TESTS =(.*?)^$$/ms; ($$t = $$1) =~ s/[\\\s\n]+/\n/g;print $$t' \

	  tests/Makefile.am | sort -c

# THANKS.in is a list of name/email pairs for people who are mentioned in

# commit logs (and generated ChangeLog), but who are not also listed as an

# author of a commit.  Name/email pairs of commit authors are automatically

# extracted from the repository.  As a very minor factorization, when

# someone who was initially listed only in THANKS.in later authors a commit,

# this rule detects that their pair may now be removed from THANKS.in.

sc_THANKS_in_duplicates:

	@{ git log --pretty=format:%aN | sort -u;			\

	    cut -b-36 THANKS.in | sed '/^$$/d;s/  *$$//'; }		\

	  | sort | uniq -d | grep .					\

	    && { echo '$(ME): remove the above names from THANKS.in'	\

		  1>&2; exit 1; } || :

# Ensure that tests don't use `cmd ... && fail=1` as that hides crashes.

# The "exclude" expression allows common idioms like `test ... && fail=1`

# and the 2>... portion allows commands that redirect stderr and so probably

# independently check its contents and thus detect any crash messages.

sc_prohibit_and_fail_1:

	@prohibit='&& fail=1'						\

	exclude='(stat|kill|test |EGREP|grep|compare|2> *[^/])'		\

	halt='&& fail=1 detected. Please use: returns_ 1 ... || fail=1'	\

	in_vc_files='^tests/'						\

	  $(_sc_search_regexp)

update-copyright-env = \

  UPDATE_COPYRIGHT_USE_INTERVALS=1 \

  UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79

include $(abs_top_srcdir)/dist-check.mk

exclude_file_name_regexp--sc_bindtextdomain = \

  ^tests/get-mb-cur-max\.c$$

exclude_file_name_regexp--sc_prohibit_strcmp = /colorize-.*\.c$$

exclude_file_name_regexp--sc_prohibit_xalloc_without_use = ^src/kwset\.c$$

exclude_file_name_regexp--sc_prohibit_tab_based_indentation = \

  (Makefile|\.(am|mk)$$)

exclude_file_name_regexp--sc_prohibit_doubled_word = ^tests/count-newline$$

exclude_file_name_regexp--sc_long_lines = ^tests/.*$$