t/remake-after-acinclude-m4.sh

   1 #! /bin/sh
   2 # Copyright (C) 2010-2024 Free Software Foundation, Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16
  17 # Test remake rules when acinclude.m4 or its prerequisites change.
  18 # Keep in sync with the other sister tests 'remake-after-*.sh'.
  19
  20 . test-init.sh
  21
  22 magic1=::MagicStringOne::
  23 magic2=__MagicStringTwo__
  24
  25 if using_gmake; then
  26   remake_() { $MAKE nil; }
  27 else
  28   remake_() { $MAKE Makefile && $MAKE foo.sh; }
  29 fi
  30
  31 cat >> configure.ac <<END
  32 FINGERPRINT='my_fingerprint'
  33 AC_SUBST([FINGERPRINT])
  34 AC_CONFIG_FILES([foo.sh:foo.in], [chmod a+x foo.sh])
  35 AC_OUTPUT
  36 END
  37
  38 cat > Makefile.am <<'END'
  39 nil:
  40 .PHONY: nil
  41
  42 # The right way to extend an autogenerated aclocal.m4 is to provide
  43 # an acinclude.m4 file.
  44 $(srcdir)/acinclude.m4: $(srcdir)/tweak-acinclude-m4
  45         $(SHELL) $(srcdir)/tweak-acinclude-m4 <$@ >$@-t
  46         mv -f $@-t $@
  47         touch $@
  48 EXTRA_DIST = $(srcdir)/tweak-acinclude-m4
  49
  50 # Used by "make distcheck" later.
  51 check-local:
  52         test x'$(FINGERPRINT)' = x'DummyValue'
  53         test x"`./foo.sh`" = x"DummyValue"
  54 END
  55
  56 cat > foo.in <<END
  57 #!/bin/sh
  58 echo '@FINGERPRINT@'
  59 END
  60
  61 echo "AC_DEFUN([my_fingerprint], [BadBadBad])" > acinclude.m4
  62
  63 echo : > tweak-acinclude-m4 # It is a no-op by default.
  64
  65 $ACLOCAL
  66 $AUTOCONF
  67 $AUTOMAKE
  68
  69 for vpath in : false; do
  70
  71   if $vpath; then
  72     mkdir build
  73     cd build
  74     srcdir=..
  75   else
  76     srcdir=.
  77   fi
  78
  79   $srcdir/configure
  80   $MAKE # Should be a no-op.
  81
  82   $sleep
  83   echo "AC_DEFUN([my_fingerprint], [$magic1])" > $srcdir/acinclude.m4
  84   remake_
  85   $FGREP FINGERPRINT Makefile # For debugging.
  86   $FGREP $magic1 Makefile
  87   test x"$(./foo.sh)" = x"$magic1"
  88
  89   $sleep
  90   echo "echo 'AC_DEFUN([my_fingerprint], [$magic2])'" \
  91     > $srcdir/tweak-acinclude-m4
  92   remake_
  93   $FGREP FINGERPRINT Makefile # For debugging.
  94   $FGREP $magic1 Makefile && exit 1
  95   $FGREP $magic2 Makefile
  96   test x"$(./foo.sh)" = x"$magic2"
  97
  98   $sleep
  99   echo : > $srcdir/tweak-acinclude-m4 # Make it a no-op again.
 100   echo "AC_DEFUN([my_fingerprint], [DummyValue])" > $srcdir/acinclude.m4
 101   using_gmake || remake_
 102   $MAKE distcheck
 103   $FGREP $magic1 Makefile && exit 1 # Sanity check.
 104   $FGREP $magic2 Makefile && exit 1 # Likewise.
 105
 106   $MAKE distclean
 107
 108   cd $srcdir
 109
 110 done
 111
 112 :