lisp: better support of VPATH builds

Fixes automake bug#11806.

* lib/am/lisp.am: Pass the value of '$(abs_srcdir)' to the
elisp-compile script in the environment.
* lib/elisp-comp: Add the vale of '$abs_srcdir' to the emacs
load-path.
* t/lisp-pr11806.sh: New test.
* t/list-of-tests.mk: Add it.

Copyright-paperwork-exempt: yes
Co-authored-by: Stefano Lattarini <stefano.lattarini@gnu.org>
Reported-by: Makoto Fujiwara <makoto@ki.nu>
Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/t/lisp-pr11806.sh b/t/lisp-pr11806.sh
new file mode 100755
index 000000000..c372ea5db
--- /dev/null
+++ b/t/lisp-pr11806.sh
@@ -0,0 +1,51 @@
+#! /bin/sh
+# Copyright (C) 2012 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/>.
+
+# Compiling .el files that requires each other in a VPATH build.
+# See automake bug#11806.
+
+required=emacs
+. ./defs || exit 1
+
+cat >> configure.ac << 'END'
+AM_PATH_LISPDIR
+AC_OUTPUT
+END
+
+cat > Makefile.am << 'END'
+lisp_LISP = foo.el
+lisp_DATA = bar.el
+END
+
+echo "(require 'bar)" > foo.el
+echo "(provide 'bar)" > bar.el
+
+$ACLOCAL
+$AUTOCONF
+$AUTOMAKE -a
+
+mkdir build
+cd build
+../configure
+$MAKE
+test -f foo.elc
+cd ..
+
+./configure
+$MAKE
+test -f foo.elc
+
+: