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# Freeze M4 files.
# Copyright (C) 2002, 2004, 2006-2017, 2020-2023 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, see <https://www.gnu.org/licenses/>.
## ----------------- ##
## Freeze M4 files. ##
## ----------------- ##
SUFFIXES += .m4 .m4f
AUTOM4TE_CFG = lib/autom4te.cfg
# Do not use AUTOM4TE here, since maint.mk (my-distcheck)
# checks if we are independent of Autoconf by defining AUTOM4TE (and
# others) to 'false'. Autoconf provides autom4te, so that doesn't
# apply to us.
MY_AUTOM4TE = \
autom4te_perllibdir='$(top_srcdir)'/lib \
AUTOM4TE_CFG='$(AUTOM4TE_CFG)' $(top_build_prefix)bin/autom4te \
-B '$(top_build_prefix)'lib -B '$(top_srcdir)'/lib # keep ' '
# When processing the file with diversion disabled, there must be no
# output but comments and empty lines.
# If freezing produces output, something went wrong: a bad 'divert',
# or an improper paren etc.
# It may happen that the output does not end with an end of line, hence
# force an end of line when reporting errors.
.m4.m4f:
$(MKDIR_P) $(@D)
lang=`echo '$*' | sed 's,.*/,,'` \
&& if test $$lang = autoconf; then \
lang=autoconf-without-aclocal-m4; \
else :; fi \
&& $(MY_AUTOM4TE) \
--language=$$lang \
--freeze \
--output=$@
# Factor the dependencies between all the frozen files.
# Some day we should explain to Automake how to use autom4te to compute
# the dependencies...
src_libdir = $(top_srcdir)/lib
build_libdir = $(top_build_prefix)lib
m4f_dependencies = $(top_build_prefix)bin/autom4te $(AUTOM4TE_CFG)
m4sugar_m4f_dependencies = \
$(m4f_dependencies) \
$(src_libdir)/m4sugar/m4sugar.m4 \
$(build_libdir)/version.m4
m4sh_m4f_dependencies = \
$(m4sugar_m4f_dependencies) \
$(src_libdir)/m4sugar/m4sh.m4
autotest_m4f_dependencies = \
$(m4sh_m4f_dependencies) \
$(src_libdir)/autotest/autotest.m4 \
$(src_libdir)/autotest/general.m4 \
$(src_libdir)/autotest/specific.m4
autoconf_m4f_dependencies = \
$(m4sh_m4f_dependencies) \
$(src_libdir)/autoconf/autoscan.m4 \
$(src_libdir)/autoconf/general.m4 \
$(src_libdir)/autoconf/autoheader.m4 \
$(src_libdir)/autoconf/autoupdate.m4 \
$(src_libdir)/autoconf/autotest.m4 \
$(src_libdir)/autoconf/status.m4 \
$(src_libdir)/autoconf/oldnames.m4 \
$(src_libdir)/autoconf/specific.m4 \
$(src_libdir)/autoconf/lang.m4 \
$(src_libdir)/autoconf/c.m4 \
$(src_libdir)/autoconf/fortran.m4 \
$(src_libdir)/autoconf/erlang.m4 \
$(src_libdir)/autoconf/go.m4 \
$(src_libdir)/autoconf/functions.m4 \
$(src_libdir)/autoconf/headers.m4 \
$(src_libdir)/autoconf/types.m4 \
$(src_libdir)/autoconf/libs.m4 \
$(src_libdir)/autoconf/programs.m4 \
$(src_libdir)/autoconf/autoconf.m4
## --------------------------- ##
## Run ETAGS on some M4 code. ##
## --------------------------- ##
ETAGS_FOR_M4 = \
--lang=none \
--regex='/\(m4_define\|define\)(\[\([^]]*\)\]/\2/'
ETAGS_FOR_M4SUGAR = \
$(ETAGS_FOR_M4) \
--regex='/m4_defun(\[\([^]]*\)\]/\1/'
ETAGS_FOR_AUTOCONF = \
$(ETAGS_FOR_M4SUGAR) \
--regex='/\(A[CU]_DEFUN\|AU_ALIAS\)(\[\([^]]*\)\]/\2/' \
--regex='/AN_\(FUNCTION\|HEADER\|IDENTIFIER\|LIBRARY\|MAKEVAR\|PROGRAM\)(\[\([^]]*\)\]/\2/'
## -------------------------------- ##
## Looking for forbidden patterns. ##
## -------------------------------- ##
check-forbidden-patterns:
@if (cd $(srcdir) && \
$(GREP) $(forbidden_patterns) $(forbidden_patterns_files)) \
>forbidden.log; then \
echo "ERROR: forbidden patterns were found:" >&2; \
sed "s|^|$*.m4: |" <forbidden.log >&2; \
echo >&2; \
exit 1; \
else \
rm -f forbidden.log; \
fi
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