#
# 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).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# 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])])
AC_ARG_ENABLE(libffi-bundling, [AS_HELP_STRING([--enable-libffi-bundling],
[enable bundling of libffi.so to make the built JDK runnable on more systems])])
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${with_libffi}" != x; then
LIBFFI_LIB_PATH="${with_libffi}/lib"
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${with_libffi_lib}" != x; then
LIBFFI_LIB_PATH="${with_libffi_lib}"
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. $HELP_MSG])
fi
AC_MSG_CHECKING([if libffi should be bundled])
if test "x$enable_libffi_bundling" = "x"; then
AC_MSG_RESULT([no])
ENABLE_LIBFFI_BUNDLING=false
elif test "x$enable_libffi_bundling" = "xno"; then
AC_MSG_RESULT([no, forced])
ENABLE_LIBFFI_BUNDLING=false
elif test "x$enable_libffi_bundling" = "xyes"; then
AC_MSG_RESULT([yes, forced])
ENABLE_LIBFFI_BUNDLING=true
else
AC_MSG_ERROR([Invalid value for --enable-libffi-bundling])
fi
# Find the libffi.so.X to bundle
if test "x${ENABLE_LIBFFI_BUNDLING}" = "xtrue"; then
AC_MSG_CHECKING([for libffi lib file location])
if test "x${LIBFFI_LIB_PATH}" != x; then
if test -e ${LIBFFI_LIB_PATH}/libffi.so.?; then
LIBFFI_LIB_FILE="${LIBFFI_LIB_PATH}/libffi.so.?"
else
AC_MSG_ERROR([Could not locate libffi.so.? for bundling in ${LIBFFI_LIB_PATH}])
fi
else
# If we don't have an explicit path, look in a few obvious places
if test "x${OPENJDK_TARGET_CPU}" = "xx86"; then
if test -e ${SYSROOT}/usr/lib/libffi.so.? ; then
LIBFFI_LIB_FILE="${SYSROOT}/usr/lib/libffi.so.?"
elif test -e ${SYSROOT}/usr/lib/i386-linux-gnu/libffi.so.? ; then
LIBFFI_LIB_FILE="${SYSROOT}/usr/lib/i386-linux-gnu/libffi.so.?"
else
AC_MSG_ERROR([Could not locate libffi.so.? for bundling])
fi
elif test "x${OPENJDK_TARGET_CPU}" = "xx86_64"; then
if test -e ${SYSROOT}/usr/lib64/libffi.so.? ; then
LIBFFI_LIB_FILE="${SYSROOT}/usr/lib64/libffi.so.?"
elif test -e ${SYSROOT}/usr/lib/x86_64-linux-gnu/libffi.so.? ; then
LIBFFI_LIB_FILE="${SYSROOT}/usr/lib/x86_64-linux-gnu/libffi.so.?"
else
AC_MSG_ERROR([Could not locate libffi.so.? for bundling])
fi
else
# Fallback on the default /usr/lib dir
if test -e ${SYSROOT}/usr/lib/libffi.so.? ; then
LIBFFI_LIB_FILE="${SYSROOT}/usr/lib/libffi.so.?"
else
AC_MSG_ERROR([Could not locate libffi.so.? for bundling])
fi
fi
fi
# Make sure the wildcard is evaluated
LIBFFI_LIB_FILE="$(ls ${LIBFFI_LIB_FILE})"
AC_MSG_RESULT([${LIBFFI_LIB_FILE}])
fi
fi
AC_SUBST(LIBFFI_CFLAGS)
AC_SUBST(LIBFFI_LIBS)
AC_SUBST(ENABLE_LIBFFI_BUNDLING)
AC_SUBST(LIBFFI_LIB_FILE)
])