#! /bin/sh
# Copyright (C) 2009-2021 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 <https://www.gnu.org/licenses/>.

# Test cscope functionality.

. test-init.sh

plan_ 18

ocwd=$(pwd) || fatal_ "getting top-level directory"

cat > configure.ac << 'END'
AC_INIT([cscope-test], [1.0])
AM_INIT_AUTOMAKE([subdir-objects])
AC_CONFIG_FILES([Makefile sub/Makefile])
AC_SUBST([CC],  [who-cares])
AC_SUBST([CXX], [who-cares])
AC_SUBST([FC],  [who-cares])
AC_SUBST([GCJ], [who-cares])
AM_PATH_LISPDIR
AC_OUTPUT
END

mkdir sub sub/subsub

cat > Makefile.am <<'END'
SUBDIRS = sub
bin_PROGRAMS = foo
foo_SOURCES = foo.c bar.cpp baz.f90
lisp_LISP = foo.el
EXTRA_DIST = foo.el
END

cat > sub/Makefile.am <<'END'
bin_PROGRAMS = bar
bar_SOURCES = subsub/dist.c
nodist_bar_SOURCES = subsub/gen.c
subsub/gen.c:
	$(MKDIR_P) subsub
	echo 'int generated_subsub () { return 0; }' > $@
CLEANFILES = subsub/gen.c
END

echo 'int foo_func () { return 0; }' > foo.c
echo 'int main () { return 0; }' > bar.cpp
cat > baz.f90 <<'END'
      subroutine baz
      end
END
: > foo.el
echo 'int main () { return 0; }' > sub/subsub/dist.c

$ACLOCAL || fatal_ "aclocal failed"
$AUTOCONF || fatal_ "autoconf failed"
$AUTOMAKE -i -a || fatal_ "automake -i -a failed"

# Sun cscope is interactive without redirection; also, it might not
# support the '-q' option, which is required by our generated recipes.
if cscope -q --version </dev/null; then
  have_cscope=yes
else
  have_cscope=no
fi

test_cleanup ()
{
  r=ok
  if test -f configure; then
    # In-tree build.
    $MAKE distclean
  else
    # VPATH build.
    $MAKE distcleancheck
  fi \
    && test ! -e cscope.files \
    && test ! -e cscope.out \
    && test ! -e cscope.in.out \
    && test ! -e cscope.po.out \
    || r='not ok'
  result_ "$r" "[$pfx] make distcheck"
}

test_cscope ()
{
  r=ok
  $MAKE -n cscope || r='not ok'
  result_ "$r" "[$pfx] make -n cscope"

  if test $have_cscope = no; then
    # For later tests.
    touch cscope.files cscope.out cscope.in.out cscope.po.out
    skip_row_ 3 -r "no proper cscope program available"
    return 0
  fi

  r=ok
  run_make -E cscope || r='not ok'
  grep 'cannot find file' stderr && r='not ok'
  rm -f stderr
  result_ "$r" "[$pfx] make cscope"

  r=ok
  test -f cscope.files \
    && $FGREP foo.c cscope.files \
    && $FGREP bar.cpp cscope.files \
    && $FGREP sub/subsub/dist.c cscope.files \
    && $FGREP sub/subsub/gen.c cscope.files \
    || r='not ok'
  result_ "$r" "[$pfx] cscope.files looks correct"

  r=ok
  # cscope.files might not exist of the earlier "make cscope" failed.
  cp cscope.files cscope.files1 \
    && $MAKE cscope \
    && diff cscope.files cscope.files1 \
    || r='not ok'
  rm -f cscope.files1
  result_ "$r" "[$pfx] second \"make cscope\" is consistent"
}

my_configure ()
{
  command_ok_ "[$pfx] configure" \
              "$1"/configure EMACS=no --with-lispdir=/who/cares
}

if using_gmake; then

  cd "$ocwd"
  pfx="relative VPATH"
  mkdir build
  cd build
  my_configure ..
  test_cscope
  test_cleanup

  cd "$ocwd"
  pfx="absolute VPATH"
  mkdir build2
  cd build2
  my_configure "$ocwd"
  test_cscope
  test_cleanup

else

  skip_row_ 12 -r "cscope in VPATH requires GNU make"

fi

cd "$ocwd"
pfx="in-tree build"
my_configure .
test_cscope
test_cleanup

: