#!/bin/sh
# Copyright (C) 2010, 2011 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 2, 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 <http://www.gnu.org/licenses/>.

# Check silent-rules mode for Lex.
# Keep this in sync with sister test `silent-lex-gcc.test'.

required='flex'
. ./defs || Exit 1

set -e

mkdir sub

cat >>configure.in <<'EOF'
AM_SILENT_RULES
AM_PROG_CC_C_O
AC_PROG_LEX
AC_CONFIG_FILES([sub/Makefile])
AC_OUTPUT
EOF

cat > Makefile.am <<'EOF'
# Need generic and non-generic rules.
bin_PROGRAMS = foo1 foo2
foo1_SOURCES = foo.l
foo2_SOURCES = $(foo1_SOURCES)
foo2_CFLAGS = $(AM_CFLAGS)
SUBDIRS = sub
LDADD = $(LEXLIB)
EOF

cat > sub/Makefile.am <<'EOF'
AUTOMAKE_OPTIONS = subdir-objects
# Need generic and non-generic rules.
bin_PROGRAMS = bar1 bar2
bar1_SOURCES = bar.l
bar2_SOURCES = $(bar1_SOURCES)
bar2_CFLAGS = $(AM_CFLAGS)
LDADD = $(LEXLIB)
EOF

cat > foo.l <<'EOF'
%{
/* avoid non-ANSI #include of unistd.h */
#define YY_NO_UNISTD_H 1
%}
%%
"END"   return EOF;
.
%%
/* Avoid possible link errors. */
int yywrap (void) { return 1; }
int   main (void) { return 0; }
EOF
cp foo.l sub/bar.l

$ACLOCAL
$AUTOMAKE --add-missing
$AUTOCONF

# Force dependency tracking explicitly, so that slow dependency
# extractors are not rejected.  Try also with dependency tracking
# explicitly disabled.
for config_args in \
  --enable-dependency-tracking --disable-dependency-tracking
do
  ./configure $config_args --enable-silent-rules

  $MAKE >stdout || { cat stdout; Exit 1; }
  cat stdout

  $EGREP ' (-c|-o)' stdout && Exit 1
  $EGREP '(mv|ylwrap) ' stdout && Exit 1

  grep 'LEX .*foo\.' stdout
  grep 'LEX .*bar\.' stdout
  grep ' CC .*foo\.' stdout
  grep ' CC .*bar\.' stdout
  grep 'CCLD .*foo1' stdout
  grep 'CCLD .*bar1' stdout
  grep 'CCLD .*foo2' stdout
  grep 'CCLD .*bar2' stdout

  # Cleaning and then rebuilding with the same V flag (and without
  # removing the generated sources in between) shouldn't trigger a
  # different set of rules.
  $MAKE clean

  $MAKE >stdout || { cat stdout; Exit 1; }
  cat stdout

  $EGREP ' (-c|-o)' stdout && Exit 1
  $EGREP '(mv|ylwrap) ' stdout && Exit 1

  # Don't look for LEX, as probably lex hasn't been re-run.
  grep ' CC .*foo\.' stdout
  grep ' CC .*bar\.' stdout
  grep 'CCLD .*foo1' stdout
  grep 'CCLD .*bar1' stdout
  grep 'CCLD .*foo2' stdout
  grep 'CCLD .*bar2' stdout

  # Ensure a truly clean rebuild.
  $MAKE clean
  rm -f foo.c sub/bar.c

  $MAKE V=1 >stdout || { cat stdout; Exit 1; }
  cat stdout

  grep ' -c ' stdout
  grep ' -o ' stdout
  grep 'ylwrap ' stdout

  $EGREP '(LEX|CC|CCLD) ' stdout && Exit 1

  # Cleaning and then rebuilding with the same V flag (and without
  # removing the generated sources in between) shouldn't trigger a
  # different set of rules.
  $MAKE clean

  $MAKE V=1 >stdout || { cat stdout; Exit 1; }
  cat stdout

  # Don't look for ylwrap, as probably lex hasn't been re-run.
  grep ' -c ' stdout
  grep ' -o ' stdout

  $EGREP '(LEX|CC|CCLD) ' stdout && Exit 1

  # Ensure a truly clean reconfiguration/rebuild.
  $MAKE clean
  $MAKE maintainer-clean
  rm -f foo.c sub/bar.c

done

: