Zabbix

​

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

        accept_openssl_version="yes"

    else    # Is it OpenSSL 1.0.1 - 1.1.1 or LibreSSL?

        # These versions use similar version numbering scheme:

        # specify version number without the last byte (status). E.g., version 1.0.1 is 0x1000100f, but without the

        # last byte it is 0x1000100.

        minimal_openssl_version=0x1000100

​

        found_openssl_version=`grep OPENSSL_VERSION_NUMBER "$1"`

        found_openssl_version=`expr "$found_openssl_version" : '.*\(0x[[0-f]][[0-f]][[0-f]][[0-f]][[0-f]][[0-f]][[0-f]]\).*'`

​

        # compare versions lexicographically

        openssl_version_check=`expr $found_openssl_version \>\= $minimal_openssl_version`

​

        if test "$openssl_version_check" = "1"; then

            accept_openssl_version="yes"

        else

    elif test "$withval" = "yes"; then

        want_openssl="yes"

        _libopenssl_dir="no"

    else

        want_openssl="yes"

        _libopenssl_dir=$withval

        _libopenssl_dir_lib="$withval/lib"

    fi

    accept_openssl_version="no"

    ],[want_openssl=ifelse([$1],,[no],[$1])]

  )

​

  if test "x$want_openssl" = "xyes"; then

​

    if test "x$enable_static_libs" = "xyes"; then

        test "x$static_linking_support" = "xno" -a -z "$_libopenssl_dir_lib" && AC_MSG_ERROR(["OpenSSL: Compiler not support statically linked libs from default folders"])

        AC_REQUIRE([PKG_PROG_PKG_CONFIG])

        m4_ifdef([PKG_PROG_PKG_CONFIG], [PKG_PROG_PKG_CONFIG()], [:])

        test -z "$PKG_CONFIG" -a -z "$_libopenssl_dir_lib" && AC_MSG_ERROR([Not found pkg-config library])

    fi

​

     AC_MSG_CHECKING(for OpenSSL support)

     if test "x$_libopenssl_dir" = "xno"; then      # if OpenSSL directory is not specified

       if test -f /usr/local/include/openssl/ssl.h -a -f /usr/local/include/openssl/crypto.h; then

         OPENSSL_CFLAGS=-I/usr/local/include

         OPENSSL_LDFLAGS=-L/usr/local/lib

         OPENSSL_LIBS="-lssl -lcrypto"

         found_openssl="yes"

       elif test -f /usr/include/openssl/ssl.h -a -f /usr/include/openssl/crypto.h; then

         OPENSSL_CFLAGS=-I/usr/include

         OPENSSL_LDFLAGS=-L/usr/lib

         OPENSSL_LIBS="-lssl -lcrypto"

         found_openssl="yes"

       else                     # libraries are not found in default directories

         found_openssl="no"

         AC_MSG_RESULT(no)

       fi

     else                       # search in the specified OpenSSL directory

       if test -f $_libopenssl_dir/include/openssl/ssl.h -a -f $_libopenssl_dir/include/openssl/crypto.h; then

         OPENSSL_CFLAGS=-I$_libopenssl_dir/include

​

         if test -d $_libopenssl_dir/lib64; then

           OPENSSL_LDFLAGS=-L$_libopenssl_dir/lib64

         elif test -d $_libopenssl_dir/lib/64; then

           OPENSSL_LDFLAGS=-L$_libopenssl_dir/lib/64

         else

           OPENSSL_LDFLAGS=-L$_libopenssl_dir/lib

         fi

​

         OPENSSL_LIBS="-lssl -lcrypto"

         found_openssl="yes"

       else                     # libraries are not found in specified directories

         found_openssl="no"

         AC_MSG_RESULT(no)

       fi

     fi

  fi

​

  if test "x$found_openssl" = "xyes"; then

    am_save_cflags="$CFLAGS"

    am_save_ldflags="$LDFLAGS"