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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_check_openssl.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]])
#
# DESCRIPTION
#
# Look for OpenSSL in a number of default spots, or in a user-selected
# spot (via --with-openssl). Sets
#
# SSL_INCLUDES to the include directives required
# SSL_LIBS to the -l directives required
# SSL_LDFLAGS to the -L or -R flags required
# SSL_DIR to add it to various paths
#
# and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately
#
# This macro sets SSL_INCLUDES such that source files should use the
# openssl/ directory in include directives:
#
# #include <openssl/hmac.h>
#
# LICENSE
#
# Copyright (c) 2009,2010 Zmanda Inc. <http://www.zmanda.com/>
# Copyright (c) 2009,2010 Dustin J. Mitchell <dustin@zmanda.com>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 8
AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL])
AC_DEFUN([AX_CHECK_OPENSSL], [
found=false
AC_ARG_WITH([openssl],
[AS_HELP_STRING([--with-openssl=DIR],
[root of the OpenSSL directory])],
[
case "$withval" in
"" | y | ye | yes | n | no)
AC_MSG_ERROR([Invalid --with-openssl value])
;;
*) ssldirs="$withval"
;;
esac
], [
# if pkg-config is installed and openssl has installed a .pc file,
# then use that information and don't search ssldirs
AC_PATH_PROG([PKG_CONFIG], [pkg-config])
if test x"$PKG_CONFIG" != x""; then
SSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null`
if test $? = 0; then
SSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null`
SSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null`
found=true
fi
fi
# no such luck; use some default ssldirs
if ! $found; then
ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr"
fi
]
)
# note that we #include <openssl/foo.h>, so the OpenSSL headers have to be in
# an 'openssl' subdirectory
if ! $found; then
SSL_INCLUDES=
for ssldir in $ssldirs; do
AC_MSG_CHECKING([for openssl/ssl.h in $ssldir])
if test -f "$ssldir/include/openssl/ssl.h"; then
SSL_INCLUDES="-I$ssldir/include"
SSL_LDFLAGS="-L$ssldir/lib"
if test "$WIN32" = "yes"; then
SSL_LIBS="-lssleay32 -llibeay32"
SSL_DIR=/$(echo ${ssldir} | ${SED} -e 's/://')
else
SSL_LIBS="-lssl -lcrypto"
SSL_DIR="$ssldir"
fi
found=true
AC_MSG_RESULT([yes])
break
else
AC_MSG_RESULT([no])
fi
done
# if the file wasn't found, well, go ahead and try the link anyway -- maybe
# it will just work!
fi
# try the preprocessor and linker with our new flags,
# being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS
AC_MSG_CHECKING([whether compiling and linking against OpenSSL works])
echo "Trying link with SSL_LDFLAGS=$SSL_LDFLAGS;" \
"SSL_LIBS=$SSL_LIBS; SSL_INCLUDES=$SSL_INCLUDES" >&AS_MESSAGE_LOG_FD
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
save_CPPFLAGS="$CPPFLAGS"
LDFLAGS="$LDFLAGS $SSL_LDFLAGS"
LIBS="$SSL_LIBS $LIBS"
CPPFLAGS="$SSL_INCLUDES $CPPFLAGS"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <openssl/ssl.h>],
[SSL_CTX *ctx=NULL;SSL_new(ctx)])],
[
AC_MSG_RESULT([yes])
$1
], [
AC_MSG_RESULT([no])
$2
])
CPPFLAGS="$save_CPPFLAGS"
LDFLAGS="$save_LDFLAGS"
LIBS="$save_LIBS"
AC_SUBST([SSL_INCLUDES])
AC_SUBST([SSL_LIBS])
AC_SUBST([SSL_LDFLAGS])
AC_SUBST([SSL_DIR])
])
|
