lib/freeze.mk

   1 # Freeze M4 files.
   2
   3 # Copyright (C) 2002, 2004, 2006-2017, 2020-2023 Free Software
   4 # Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19
  20 ## ----------------- ##
  21 ## Freeze M4 files.  ##
  22 ## ----------------- ##
  23
  24 SUFFIXES += .m4 .m4f
  25
  26 AUTOM4TE_CFG = lib/autom4te.cfg
  27
  28 # Do not use AUTOM4TE here, since maint.mk (my-distcheck)
  29 # checks if we are independent of Autoconf by defining AUTOM4TE (and
  30 # others) to 'false'.  Autoconf provides autom4te, so that doesn't
  31 # apply to us.
  32 MY_AUTOM4TE =                                                                   \
  33         autom4te_perllibdir='$(top_srcdir)'/lib                                 \
  34         AUTOM4TE_CFG='$(AUTOM4TE_CFG)'         $(top_build_prefix)bin/autom4te  \
  35                 -B '$(top_build_prefix)'lib -B '$(top_srcdir)'/lib        # keep ' '
  36
  37 # When processing the file with diversion disabled, there must be no
  38 # output but comments and empty lines.
  39 # If freezing produces output, something went wrong: a bad 'divert',
  40 # or an improper paren etc.
  41 # It may happen that the output does not end with an end of line, hence
  42 # force an end of line when reporting errors.
  43 .m4.m4f:
  44         $(MKDIR_P) $(@D)
  45         lang=`echo '$*' | sed 's,.*/,,'` \
  46           && if test $$lang = autoconf; then \
  47                lang=autoconf-without-aclocal-m4; \
  48              else :; fi \
  49           && $(MY_AUTOM4TE) \
  50                 --language=$$lang \
  51                 --freeze \
  52                 --output=$@
  53
  54 # Factor the dependencies between all the frozen files.
  55 # Some day we should explain to Automake how to use autom4te to compute
  56 # the dependencies...
  57 src_libdir   = $(top_srcdir)/lib
  58 build_libdir = $(top_build_prefix)lib
  59
  60 m4f_dependencies = $(top_build_prefix)bin/autom4te $(AUTOM4TE_CFG)
  61
  62 m4sugar_m4f_dependencies =                      \
  63         $(m4f_dependencies)                     \
  64         $(src_libdir)/m4sugar/m4sugar.m4        \
  65         $(build_libdir)/version.m4
  66
  67 m4sh_m4f_dependencies =                         \
  68         $(m4sugar_m4f_dependencies)             \
  69         $(src_libdir)/m4sugar/m4sh.m4
  70
  71 autotest_m4f_dependencies =                     \
  72         $(m4sh_m4f_dependencies)                \
  73         $(src_libdir)/autotest/autotest.m4      \
  74         $(src_libdir)/autotest/general.m4       \
  75         $(src_libdir)/autotest/specific.m4
  76
  77 autoconf_m4f_dependencies =                     \
  78         $(m4sh_m4f_dependencies)                \
  79         $(src_libdir)/autoconf/autoscan.m4      \
  80         $(src_libdir)/autoconf/general.m4       \
  81         $(src_libdir)/autoconf/autoheader.m4    \
  82         $(src_libdir)/autoconf/autoupdate.m4    \
  83         $(src_libdir)/autoconf/autotest.m4      \
  84         $(src_libdir)/autoconf/status.m4        \
  85         $(src_libdir)/autoconf/oldnames.m4      \
  86         $(src_libdir)/autoconf/specific.m4      \
  87         $(src_libdir)/autoconf/lang.m4          \
  88         $(src_libdir)/autoconf/c.m4             \
  89         $(src_libdir)/autoconf/fortran.m4       \
  90         $(src_libdir)/autoconf/erlang.m4        \
  91         $(src_libdir)/autoconf/go.m4            \
  92         $(src_libdir)/autoconf/functions.m4     \
  93         $(src_libdir)/autoconf/headers.m4       \
  94         $(src_libdir)/autoconf/types.m4         \
  95         $(src_libdir)/autoconf/libs.m4          \
  96         $(src_libdir)/autoconf/programs.m4      \
  97         $(src_libdir)/autoconf/autoconf.m4
  98
  99
 100 ## --------------------------- ##
 101 ## Run ETAGS on some M4 code.  ##
 102 ## --------------------------- ##
 103
 104 ETAGS_FOR_M4 = \
 105   --lang=none \
 106   --regex='/\(m4_define\|define\)(\[\([^]]*\)\]/\2/'
 107
 108 ETAGS_FOR_M4SUGAR = \
 109   $(ETAGS_FOR_M4) \
 110   --regex='/m4_defun(\[\([^]]*\)\]/\1/'
 111
 112 ETAGS_FOR_AUTOCONF = \
 113   $(ETAGS_FOR_M4SUGAR) \
 114   --regex='/\(A[CU]_DEFUN\|AU_ALIAS\)(\[\([^]]*\)\]/\2/' \
 115   --regex='/AN_\(FUNCTION\|HEADER\|IDENTIFIER\|LIBRARY\|MAKEVAR\|PROGRAM\)(\[\([^]]*\)\]/\2/'
 116
 117
 118 ## -------------------------------- ##
 119 ## Looking for forbidden patterns.  ##
 120 ## -------------------------------- ##
 121
 122 check-forbidden-patterns:
 123         @if (cd $(srcdir) && \
 124             $(GREP) $(forbidden_patterns) $(forbidden_patterns_files)) \
 125             >forbidden.log; then \
 126           echo "ERROR: forbidden patterns were found:" >&2; \
 127           sed "s|^|$*.m4: |" <forbidden.log >&2; \
 128           echo >&2; \
 129           exit 1; \
 130         else \
 131           rm -f forbidden.log; \
 132         fi