t/remake-gnulib-add-header.sh

   1 #! /bin/sh
   2 # Copyright (C) 2011-2024 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 a new C header "guarded" by AC_SUBST'd
  18 # variables is added.
  19 # This test overlaps with others, and is not strictly necessary per se,
  20 # but it exercises a real use case (from gnulib, see:
  21 #  <https://lists.gnu.org/archive/html/bug-gnulib/2011-04/msg00005.html>
  22 # for more info).
  23
  24 required=cc
  25 . test-init.sh
  26
  27 cat >> configure.ac <<'END'
  28 AC_CONFIG_HEADERS([config.h])
  29 AC_PROG_CC
  30 MY_MACROS
  31 AC_OUTPUT
  32 END
  33
  34 cat > Makefile.am <<'END'
  35 ACLOCAL_AMFLAGS = -I .
  36 noinst_PROGRAMS = foo
  37 foo_SOURCES = foo.c
  38 BUILT_SOURCES = $(STDIO_H)
  39 stdio.h: stdio.in.h
  40         cp $(srcdir)/stdio.in.h $@
  41 MOSTLYCLEANFILES = stdio.h
  42 EXTRA_DIST = stdio.in.h
  43 check-local:
  44         ls -l . $(srcdir)
  45         if test -n '$(STDIO_H)'; then \
  46             test -f stdio.h || exit 1; \
  47         else \
  48             test ! -f stdio.h || exit 1; \
  49         fi
  50 END
  51
  52 cat > macros.m4 <<'END'
  53 AC_DEFUN([MY_MACROS], [
  54   override_stdio=false
  55   if $override_stdio; then
  56     STDIO_H=stdio.h
  57     use_dummies=1
  58   else
  59     STDIO_H=
  60     use_dummies=0
  61   fi
  62   AC_SUBST([STDIO_H])
  63   AC_DEFINE_UNQUOTED([USE_DUMMIES], [$use_dummies],
  64     [Whether to use dummy types.])
  65 ])
  66 END
  67
  68 cat > stdio.in.h <<'END'
  69 typedef struct dummyfile { void *p; } DUMMYFILE;
  70 END
  71
  72 cat > foo.c <<'END'
  73 #include <config.h>
  74 #include <stdio.h>
  75 #if USE_DUMMIES
  76 DUMMYFILE *f;
  77 #else
  78 FILE *f;
  79 #endif
  80 int main () { return 0; }
  81 END
  82
  83 $ACLOCAL -I .
  84 $AUTOHEADER
  85 $AUTOMAKE
  86 $AUTOCONF
  87
  88 ./configure
  89
  90 $MAKE
  91 ls -l
  92 test ! -e stdio.h
  93 # Also try our build rules in a VPATH build.
  94 $MAKE distcheck
  95
  96 # No need to sleep here: "./configure" and "make distcheck" above
  97 # have already slept enough.
  98
  99 sed -e 's/^\( *override_stdio\)=.*$/\1=:/' macros.m4 > t
 100 mv -f t macros.m4
 101
 102 using_gmake || $MAKE Makefile
 103 $MAKE
 104 ls -l
 105 test -f stdio.h
 106 # Also try our build rules in a VPATH build.
 107 $MAKE distcheck
 108
 109 :