Zabbix

# OpenSSL LIBOPENSSL_CHECK_CONFIG ([DEFAULT-ACTION])

# ----------------------------------------------------------

# Derived from libssh2.m4

#

# Checks for OpenSSL library libssl.  DEFAULT-ACTION is the string yes or

# no to specify whether to default to --with-openssl or --without-openssl.

# If not supplied, DEFAULT-ACTION is no.

#

# This macro #defines HAVE_OPENSSL if a required header files are

# found, and sets @OPENSSL_LDFLAGS@, @OPENSSL_CFLAGS@ and @OPENSSL_LIBS@

# to the necessary values.

#

# Users may override the detected values by doing something like:

# OPENSSL_LIBS="-lssl" OPENSSL_CFLAGS="-I/usr/myinclude" ./configure

#

# This macro 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.

​

AC_DEFUN([LIBOPENSSL_TRY_LINK],

[

AC_TRY_LINK(

[

#include <openssl/ssl.h>

#include <openssl/bio.h>

],

[

    /* check that both libssl and libcrypto are available */

​

    SSL *ssl = NULL;

​

    SSL_connect(ssl);   /* a function from libssl, present in both OpenSSL 1.0.1 and 1.1.0 */

    BIO_new(BIO_s_mem());   /* a function from libcrypto */

],

found_openssl="yes",)

])dnl

​

AC_DEFUN([LIBOPENSSL_TRY_LINK_PSK],

[

AC_TRY_LINK(

[

#include <openssl/ssl.h>

],

[

    /* check if OPENSSL_NO_PSK is defined */

#ifdef OPENSSL_NO_PSK

#   error "OPENSSL_NO_PSK is defined. PSK support will not be available."

#endif

],

found_openssl_with_psk="yes",)

])dnl

​

AC_DEFUN([LIBOPENSSL_ACCEPT_VERSION],

[

    # Zabbix minimal supported version of OpenSSL.

    # Version numbering scheme is described in /usr/include/openssl/opensslv.h.

​

    # Is it OpenSSL 3? Test OPENSSL_VERSION_MAJOR - it is defined only in OpenSSL 3.0.

    found_openssl_version=`grep OPENSSL_VERSION_MAJOR "$1" | head -n 1`

    found_openssl_version=`expr "$found_openssl_version" : '^#.*define.*OPENSSL_VERSION_MAJOR.*\(3\)$'`

​

    if test "$found_openssl_version" = "3"; then

        # OpenSSL 3.x found