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# ===========================================================================
# ax_lib_openssl.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_LIB_OPENSSL([MINIMUM-VERSION])
#
# DESCRIPTION
#
# This macro provides tests of availability of OpenSSL of a
# particular version or newer. This macros checks for OpenSSL
# headers and libraries and defines compilation flags.
#
# Macro supports following options and their values:
#
# 1) Single-option usage:
#
# --with-openssl - yes, no or path to OpenSSL installation prefix
#
# This macro calls:
#
# AC_SUBST(OPENSSL_CFLAGS)
# AC_SUBST(OPENSSL_LDFLAGS)
# AC_SUBST(OPENSSL_VERSION) - only if version requirement is used
#
# And sets:
#
# HAVE_OPENSSL
#
# Copyright (c) 2008-2009 CineCert, LLC
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
AC_DEFUN([AX_LIB_OPENSSL],
[
AC_ARG_WITH([openssl],
AC_HELP_STRING([--with-openssl=@<:@ARG@:>@],
[use OpenSSL from given prefix (ARG=path); check standard prefixes (ARG=yes); disable (ARG=no)]
),
[
if test "$withval" = "yes"; then
if test -d /var/local/ssl/include ; then
openssl_prefix=/var/local/ssl
elif test -d /var/local/include/openssl ; then
openssl_prefix=/var/local
elif test -d /usr/local/ssl/include ; then
openssl_prefix=/usr/local/ssl
elif test -d /usr/lib/ssl/include ; then
openssl_prefix=/usr/lib/ssl
elif test -d /usr/include/openssl ; then
openssl_prefix=/usr
else
openssl_prefix=""
fi
openssl_requested="yes"
elif test -d "$withval"; then
openssl_prefix="$withval"
openssl_requested="yes"
else
openssl_prefix=""
openssl_requested="no"
fi
],
[
dnl Default behavior is implicit yes
if test -d /var/local/ssl/include ; then
openssl_prefix=/var/local/ssl
elif test -d /var/local/include/openssl ; then
openssl_prefix=/var/local
elif test -d /usr/local/ssl/include ; then
openssl_prefix=/usr/local/ssl
elif test -d /usr/lib/ssl/include ; then
openssl_prefix=/usr/lib/ssl
elif test -d /usr/include/openssl ; then
openssl_prefix=/usr
else
openssl_prefix=""
fi
]
)
OPENSSL_CPPFLAGS=""
OPENSSL_LDFLAGS=""
OPENSSL_VERSION=""
dnl
dnl Collect include/lib paths and flags
dnl
run_openssl_test="no"
if test -n "$openssl_prefix"; then
openssl_include_dir="$openssl_prefix/include"
openssl_ldflags="-L$openssl_prefix/lib64 -L$openssl_prefix/lib"
run_openssl_test="yes"
elif test "$openssl_requested" = "yes"; then
if test -n "$openssl_include_dir" -a -n "$openssl_lib_flags"; then
run_openssl_test="yes"
fi
else
run_openssl_test="no"
fi
openssl_libs="-lssl -lcrypto"
dnl
dnl Check OpenSSL files
dnl
if test "$run_openssl_test" = "yes"; then
saved_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I$openssl_include_dir"
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $openssl_ldflags"
saved_LIBS="$LIBS"
LIBS="$openssl_libs $LIBS"
dnl
dnl Check OpenSSL headers
dnl
AC_MSG_CHECKING([for OpenSSL headers in $openssl_include_dir])
AC_LANG_PUSH([C])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM(
[[
@%:@include <openssl/opensslv.h>
@%:@include <openssl/ssl.h>
@%:@include <openssl/crypto.h>
]],
[[]]
)],
[
OPENSSL_CPPFLAGS="-I$openssl_include_dir"
openssl_header_found="yes"
AC_MSG_RESULT([found])
],
[
openssl_header_found="no"
AC_MSG_RESULT([not found])
]
)
AC_LANG_POP([C])
dnl
dnl Check OpenSSL libraries
dnl
if test "$openssl_header_found" = "yes"; then
AC_MSG_CHECKING([for OpenSSL libraries])
AC_LANG_PUSH([C])
AC_LINK_IFELSE([
AC_LANG_PROGRAM(
[[
@%:@include <openssl/opensslv.h>
@%:@include <openssl/ssl.h>
@%:@include <openssl/crypto.h>
#if (OPENSSL_VERSION_NUMBER < 0x0090700f)
#endif
]],
[[
SSL_library_init();
SSLeay();
]]
)],
[
OPENSSL_LDFLAGS="$openssl_ldflags"
OPENSSL_LIBS="$openssl_libs"
openssl_lib_found="yes"
AC_MSG_RESULT([found])
],
[
openssl_lib_found="no"
AC_MSG_RESULT([not found])
]
)
AC_LANG_POP([C])
fi
CPPFLAGS="$saved_CPPFLAGS"
LDFLAGS="$saved_LDFLAGS"
LIBS="$saved_LIBS"
fi
AC_MSG_CHECKING([for OpenSSL])
if test "$run_openssl_test" = "yes"; then
if test "$openssl_header_found" = "yes" -a "$openssl_lib_found" = "yes"; then
AC_SUBST([OPENSSL_CPPFLAGS])
AC_SUBST([OPENSSL_LDFLAGS])
AC_SUBST([OPENSSL_LIBS])
HAVE_OPENSSL="yes"
else
HAVE_OPENSSL="no"
fi
AC_MSG_RESULT([$HAVE_OPENSSL])
dnl
dnl Check OpenSSL version
dnl
if test "$HAVE_OPENSSL" = "yes"; then
openssl_version_req=ifelse([$1], [], [], [$1])
if test -n "$openssl_version_req"; then
AC_MSG_CHECKING([if OpenSSL version is >= $openssl_version_req])
if test -f "$openssl_include_dir/openssl/opensslv.h"; then
OPENSSL_VERSION=`grep OPENSSL_VERSION_TEXT $openssl_include_dir/openssl/opensslv.h \
| grep -v fips | grep -v PTEXT | cut -f 2 | tr -d \"`
AC_SUBST([OPENSSL_VERSION])
dnl Decompose required version string and calculate numerical representation
openssl_version_req_major=`expr $openssl_version_req : '\([[0-9]]*\)'`
openssl_version_req_minor=`expr $openssl_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
openssl_version_req_revision=`expr $openssl_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
openssl_version_req_patch=`expr $openssl_version_req : '[[0-9]]*\.[[0-9]]*\.[[0-9]]*\([[a-z]]*\)'`
if test "x$openssl_version_req_revision" = "x"; then
openssl_version_req_revision="0"
fi
if test "x$openssl_version_req_patch" = "x"; then
openssl_version_req_patch="\`"
fi
openssl_version_req_number=`expr $openssl_version_req_major \* $((0x10000000)) \
\+ $openssl_version_req_minor \* $((0x100000)) \
\+ $openssl_version_req_revision \* $((0x1000)) \
\+ $((1 + $(printf "%d" \'$openssl_version_req_patch) - $(printf "%d" \'a))) \* $((0x10)) \
\+ $((0xf))`
dnl Calculate numerical representation of detected version
openssl_version_number=`expr $(($(grep OPENSSL_VERSION_NUMBER $openssl_include_dir/openssl/opensslv.h | cut -f 2 | tr -d L)))`
openssl_version_check=`expr $openssl_version_number \>\= $openssl_version_req_number`
if test "$openssl_version_check" = "1"; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
AC_MSG_WARN([Found $OPENSSL_VERSION, which is older than required. Possible compilation failure.])
fi
else
AC_MSG_RESULT([no])
AC_MSG_WARN([Missing header openssl/opensslv.h. Unable to determine OpenSSL version.])
fi
fi
fi
else
HAVE_OPENSSL="no"
AC_MSG_RESULT([$HAVE_OPENSSL])
if test "$openssl_requested" = "yes"; then
AC_MSG_WARN([OpenSSL support requested but headers or library not found. Specify valid prefix of OpenSSL using --with-openssl=@<:@DIR@:>@])
fi
fi
if test "$HAVE_OPENSSL" = "yes"; then
CPPFLAGS="$CPPFLAGS $OPENSSL_CPPFLAGS -DHAVE_SSL=1"
LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LIBS"
fi
])
|
