8142968: Module System implementation
Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282
Reviewed-by: alanb, mchung, tbell
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, erik.joelsson@oracle.com, chris.hegarty@oracle.com, christian.tornqvist@oracle.com, harold.seigel@oracle.com, igor.ignatyev@oracle.com, james.laskey@oracle.com, jean-francois.denise@oracle.com, sundararajan.athijegannathan@oracle.com
#
# Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation. Oracle designates this
# particular file as subject to the "Classpath" exception as provided
# by Oracle in the LICENSE file that accompanied this code.
#
# This code 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
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
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# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#
################################################################################
# Setup libffi (Foreign Function Interface)
################################################################################
AC_DEFUN_ONCE([LIB_SETUP_LIBFFI],
[
AC_ARG_WITH(libffi, [AS_HELP_STRING([--with-libffi],
[specify prefix directory for the libffi package
(expecting the libraries under PATH/lib and the headers under PATH/include)])])
AC_ARG_WITH(libffi-include, [AS_HELP_STRING([--with-libffi-include],
[specify directory for the libffi include files])])
AC_ARG_WITH(libffi-lib, [AS_HELP_STRING([--with-libffi-lib],
[specify directory for the libffi library])])
if test "x$NEEDS_LIB_FFI" = xfalse; then
if (test "x${with_libffi}" != x && test "x${with_libffi}" != xno) || \
(test "x${with_libffi_include}" != x && test "x${with_libffi_include}" != xno) || \
(test "x${with_libffi_lib}" != x && test "x${with_libffi_lib}" != xno); then
AC_MSG_WARN([[libffi not used, so --with-libffi[-*] is ignored]])
fi
LIBFFI_CFLAGS=
LIBFFI_LIBS=
else
LIBFFI_FOUND=no
if test "x${with_libffi}" = xno || test "x${with_libffi_include}" = xno || test "x${with_libffi_lib}" = xno; then
AC_MSG_ERROR([It is not possible to disable the use of libffi. Remove the --without-libffi option.])
fi
if test "x${with_libffi}" != x; then
LIBFFI_LIBS="-L${with_libffi}/lib -lffi"
LIBFFI_CFLAGS="-I${with_libffi}/include"
LIBFFI_FOUND=yes
fi
if test "x${with_libffi_include}" != x; then
LIBFFI_CFLAGS="-I${with_libffi_include}"
LIBFFI_FOUND=yes
fi
if test "x${with_libffi_lib}" != x; then
LIBFFI_LIBS="-L${with_libffi_lib} -lffi"
LIBFFI_FOUND=yes
fi
# Do not try pkg-config if we have a sysroot set.
if test "x$SYSROOT" = x; then
if test "x$LIBFFI_FOUND" = xno; then
# Figure out LIBFFI_CFLAGS and LIBFFI_LIBS
PKG_CHECK_MODULES([LIBFFI], [libffi], [LIBFFI_FOUND=yes], [LIBFFI_FOUND=no])
fi
fi
if test "x$LIBFFI_FOUND" = xno; then
AC_CHECK_HEADERS([ffi.h],
[
LIBFFI_FOUND=yes
LIBFFI_CFLAGS=
LIBFFI_LIBS=-lffi
],
[LIBFFI_FOUND=no]
)
fi
if test "x$LIBFFI_FOUND" = xno; then
HELP_MSG_MISSING_DEPENDENCY([ffi])
AC_MSG_ERROR([Could not find libffi! $HELP_MSG])
fi
AC_MSG_CHECKING([if libffi works])
AC_LANG_PUSH(C)
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $LIBFFI_CFLAGS"
OLD_LIBS="$LIBS"
LIBS="$LIBS $LIBFFI_LIBS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <ffi.h>],
[
ffi_call(NULL, NULL, NULL, NULL);
return 0;
])],
[LIBFFI_WORKS=yes],
[LIBFFI_WORKS=no]
)
CFLAGS="$OLD_CFLAGS"
LIBS="$OLD_LIBS"
AC_LANG_POP(C)
AC_MSG_RESULT([$LIBFFI_WORKS])
if test "x$LIBFFI_WORKS" = xno; then
HELP_MSG_MISSING_DEPENDENCY([ffi])
AC_MSG_ERROR([Found libffi but could not link and compile with it. $HELP_MSG])
fi
fi
AC_SUBST(LIBFFI_CFLAGS)
AC_SUBST(LIBFFI_LIBS)
])