137 lines
3.1 KiB
Bash
137 lines
3.1 KiB
Bash
#! /bin/sh
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# Copyright (C) 2011-2017 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test remake rules when a C header "guarded" by AC_SUBST'd variables
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# is not needed anymore, or when it's needed again.
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# This test requires some user-level machinery, overlaps with other tests,
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# and is not strictly necessary per se, but it exercises a real, important
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# use case (from gnulib, see:
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# <http://lists.gnu.org/archive/html/bug-gnulib/2011-04/msg00005.html>
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# for more info).
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required=cc
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. test-init.sh
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cat >> configure.ac <<'END'
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AC_CONFIG_HEADERS([config.h])
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AC_PROG_CC
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MY_MACROS
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AC_OUTPUT
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END
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cat > Makefile.am <<'END'
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ACLOCAL_AMFLAGS = -I .
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noinst_PROGRAMS = foo
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foo_SOURCES = foo.c
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BUILT_SOURCES = $(STDIO_H)
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if REPLACE_STDIO_H
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stdio.h: stdio.in.h $(top_builddir)/config.status
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cp $(srcdir)/stdio.in.h $@
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else
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stdio.h: $(top_builddir)/config.status
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rm -f $@
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endif
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MOSTLYCLEANFILES = stdio.h
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END
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cat > macros.m4 <<'END'
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AC_DEFUN([MY_MACROS], [
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override_stdio=:
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if $override_stdio; then
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STDIO_H=stdio.h
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use_dummies=1
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else
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STDIO_H=
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use_dummies=0
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fi
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AC_SUBST([STDIO_H])
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AC_DEFINE_UNQUOTED([USE_DUMMIES], [$use_dummies],
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[Whether to use dummy types.])
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AM_CONDITIONAL([REPLACE_STDIO_H], [test -n "$STDIO_H"])
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])
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END
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cat > stdio.in.h <<'END'
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typedef struct dummyfile { void *p; } DUMMYFILE;
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END
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cat > foo.c <<'END'
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#include <config.h>
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#include <stdio.h>
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#if USE_DUMMIES
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DUMMYFILE *f;
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#else
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FILE *f;
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#endif
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int main () { return 0; }
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END
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$ACLOCAL -I .
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$AUTOHEADER
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$AUTOMAKE
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$AUTOCONF
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for vpath in : false; do
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if $vpath; then
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mkdir build
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cd build
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srcdir=..
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else
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srcdir=.
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fi
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# Do not reject slow dependency extractors: we need dependency tracking.
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$srcdir/configure --enable-dependency-tracking
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if $FGREP 'depmode=none' Makefile; then
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skip_ "automatic dependency tracking couldn't be activated"
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fi
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$MAKE
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ls -l
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test -f stdio.h
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# Simulate that we don't need our custom stdio.h anymore.
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$sleep
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sed -e 's/^\( *override_stdio\)=.*$/\1=false/' $srcdir/macros.m4 > t
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diff $srcdir/macros.m4 t && fatal_ "failed to edit macros.m4"
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mv -f t $srcdir/macros.m4
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using_gmake || $MAKE Makefile
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$MAKE
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ls -l
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test ! -e stdio.h
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# And now simulate that we want our custom stdio.h back.
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$sleep
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sed -e 's/^\( *override_stdio\)=.*$/\1=:/' $srcdir/macros.m4 > t
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diff $srcdir/macros.m4 t && fatal_ "failed to edit macros.m4"
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mv -f t $srcdir/macros.m4
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using_gmake || $MAKE Makefile
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$MAKE
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ls -l
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test -f stdio.h
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$MAKE distclean
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cd $srcdir
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done
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:
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