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# generated automatically by aclocal 1.16.1 -*- Autoconf -*-
# Copyright (C) 1996-2018 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
# ===============================================================================
# https://www.gnu.org/software/autoconf-archive/ax_c_float_words_bigendian.html
# ===============================================================================
#
# SYNOPSIS
#
# AX_C_FLOAT_WORDS_BIGENDIAN([ACTION-IF-TRUE], [ACTION-IF-FALSE], [ACTION-IF-UNKNOWN])
#
# DESCRIPTION
#
# Checks the ordering of words within a multi-word float. This check is
# necessary because on some systems (e.g. certain ARM systems), the float
# word ordering can be different from the byte ordering. In a multi-word
# float context, "big-endian" implies that the word containing the sign
# bit is found in the memory location with the lowest address. This
# implementation was inspired by the AC_C_BIGENDIAN macro in autoconf.
#
# The endianness is detected by first compiling C code that contains a
# special double float value, then grepping the resulting object file for
# certain strings of ASCII values. The double is specially crafted to have
# a binary representation that corresponds with a simple string. In this
# implementation, the string "noonsees" was selected because the
# individual word values ("noon" and "sees") are palindromes, thus making
# this test byte-order agnostic. If grep finds the string "noonsees" in
# the object file, the target platform stores float words in big-endian
# order. If grep finds "seesnoon", float words are in little-endian order.
# If neither value is found, the user is instructed to specify the
# ordering.
#
# LICENSE
#
# Copyright (c) 2008 Daniel Amelang <dan@amelang.net>
#
# 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 11
AC_DEFUN([AX_C_FLOAT_WORDS_BIGENDIAN],
[AC_CACHE_CHECK(whether float word ordering is bigendian,
ax_cv_c_float_words_bigendian, [
ax_cv_c_float_words_bigendian=unknown
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0;
]])], [
if grep noonsees conftest.$ac_objext >/dev/null ; then
ax_cv_c_float_words_bigendian=yes
fi
if grep seesnoon conftest.$ac_objext >/dev/null ; then
if test "$ax_cv_c_float_words_bigendian" = unknown; then
ax_cv_c_float_words_bigendian=no
else
ax_cv_c_float_words_bigendian=unknown
fi
fi
])])
case $ax_cv_c_float_words_bigendian in
yes)
m4_default([$1],
[AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
[Define to 1 if your system stores words within floats
with the most significant word first])]) ;;
no)
$2 ;;
*)
m4_default([$3],
[AC_MSG_ERROR([
Unknown float word ordering. You need to manually preset
ax_cv_c_float_words_bigendian=no (or yes) according to your system.
])]) ;;
esac
])# AX_C_FLOAT_WORDS_BIGENDIAN
# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
# Check whether the given FLAG works with the current language's compiler
# or gives an error. (Warnings, however, are ignored)
#
# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
# success/failure.
#
# If EXTRA-FLAGS is defined, it is added to the current language's default
# flags (e.g. CFLAGS) when the check is done. The check is thus made with
# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
# force the compiler to issue an error when a bad flag is given.
#
# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
#
# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# LICENSE
#
# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.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 6
AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])
_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_VAR_IF(CACHEVAR,yes,
[m4_default([$2], :)],
[m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS
# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_check_openssl.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]])
#
# DESCRIPTION
#
# Look for OpenSSL in a number of default spots, or in a user-selected
# spot (via --with-openssl). Sets
#
# OPENSSL_INCLUDES to the include directives required
# OPENSSL_LIBS to the -l directives required
# OPENSSL_LDFLAGS to the -L or -R flags required
#
# and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately
#
# This macro sets OPENSSL_INCLUDES such that source files should use the
# openssl/ directory in include directives:
#
# #include <openssl/hmac.h>
#
# LICENSE
#
# Copyright (c) 2009,2010 Zmanda Inc. <http://www.zmanda.com/>
# Copyright (c) 2009,2010 Dustin J. Mitchell <dustin@zmanda.com>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 10
AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL])
AC_DEFUN([AX_CHECK_OPENSSL], [
found=false
AC_ARG_WITH([openssl],
[AS_HELP_STRING([--with-openssl=DIR],
[root of the OpenSSL directory])],
[
case "$withval" in
"" | y | ye | yes | n | no)
AC_MSG_ERROR([Invalid --with-openssl value])
;;
*) ssldirs="$withval"
;;
esac
], [
# if pkg-config is installed and openssl has installed a .pc file,
# then use that information and don't search ssldirs
AC_CHECK_TOOL([PKG_CONFIG], [pkg-config])
if test x"$PKG_CONFIG" != x""; then
OPENSSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null`
if test $? = 0; then
OPENSSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null`
OPENSSL_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
OPENSSL_INCLUDES=
for ssldir in $ssldirs; do
AC_MSG_CHECKING([for openssl/ssl.h in $ssldir])
if test -f "$ssldir/include/openssl/ssl.h"; then
OPENSSL_INCLUDES="-I$ssldir/include"
OPENSSL_LDFLAGS="-L$ssldir/lib"
OPENSSL_LIBS="-lssl -lcrypto"
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 OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \
"OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&AS_MESSAGE_LOG_FD
save_LIBS="$LIBS"
save_LDFLAGS="$LDFLAGS"
save_CPPFLAGS="$CPPFLAGS"
LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS"
LIBS="$OPENSSL_LIBS $LIBS"
CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <openssl/ssl.h>], [SSL_new(NULL)])],
[
AC_MSG_RESULT([yes])
$1
], [
AC_MSG_RESULT([no])
$2
])
CPPFLAGS="$save_CPPFLAGS"
LDFLAGS="$save_LDFLAGS"
LIBS="$save_LIBS"
AC_SUBST([OPENSSL_INCLUDES])
AC_SUBST([OPENSSL_LIBS])
AC_SUBST([OPENSSL_LDFLAGS])
])
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