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#!/usr/bin/env python

import os

VERSION="1.1.9"

def configure(conf):
    if conf.CHECK_SOCKET_WRAPPER():
        conf.DEFINE('USING_SYSTEM_SOCKET_WRAPPER', 1)
        libsocket_wrapper_so_path = 'libsocket_wrapper.so'
    else:
        # check HAVE_GCC_THREAD_LOCAL_STORAGE
        conf.CHECK_CODE('''
            __thread int tls;

            int main(void) {
                return 0;
            }
            ''',
            'HAVE_GCC_THREAD_LOCAL_STORAGE',
            addmain=False,
            msg='Checking for thread local storage')

        # check HAVE_DESTRUCTOR_ATTRIBUTE
        conf.CHECK_CODE('''
            void test_destructor_attribute(void) __attribute__ ((destructor));

            void test_destructor_attribute(void)
            {
                return;
            }

            int main(void) {
                return 0;
            }
            ''',
            'HAVE_DESTRUCTOR_ATTRIBUTE',
            addmain=False,
            msg='Checking for library destructor support')

        # check HAVE_FUNCTION_ATTRIBUTE_FORMAT
        conf.CHECK_CODE('''
            void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));

            int main(void) {
                return 0;
            }
            ''',
            'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
            addmain=False,
            msg='Checking for printf format validation support')

        conf.CHECK_HEADERS('sys/signalfd.h')
        conf.CHECK_HEADERS('sys/eventfd.h')
        conf.CHECK_HEADERS('sys/timerfd.h')
        conf.CHECK_HEADERS('gnu/lib-names.h')
        conf.CHECK_HEADERS('rpc/rpc.h')

        conf.CHECK_STRUCTURE_MEMBER('struct msghdr',
                                    'msg_control',
                                    headers='sys/types.h sys/socket.h',
                                    define='HAVE_STRUCT_MSGHDR_MSG_CONTROL')

        conf.CHECK_STRUCTURE_MEMBER('struct in_pktinfo',
                                    'ipi_addr',
                                    headers='sys/types.h sys/socket.h netinet/in.h',
                                    define='HAVE_STRUCT_IN_PKTINFO')

        conf.CHECK_STRUCTURE_MEMBER('struct in6_pktinfo',
                                    'ipi6_addr',
                                    headers='sys/types.h sys/socket.h netinet/in.h',
                                    define='HAVE_STRUCT_IN6_PKTINFO')

        conf.CHECK_FUNCS('getaddrinfo')
        conf.CHECK_FUNCS('signalfd eventfd timerfd_create')
        conf.CHECK_FUNCS('bindresvport')
        conf.CHECK_FUNCS('pledge')
        conf.CHECK_FUNCS('accept4')

        conf.CHECK_FUNCS_IN('bind',
                            'socket',
                            checklibc=True,
                            headers='sys/types.h sys/socket.h')

        conf.CHECK_C_PROTOTYPE('accept',
                               'int accept(int s, struct sockaddr *addr, Psocklen_t addrlen)',
                               define='HAVE_ACCEPT_PSOCKLEN_T', headers='sys/types.h sys/socket.h')

        conf.CHECK_C_PROTOTYPE('ioctl',
                               'int ioctl(int s, int r, ...)',
                               define='HAVE_IOCTL_INT', headers='unistd.h sys/ioctl.h')

        if conf.CONFIG_SET("HAVE_EVENTFD"):
            conf.CHECK_C_PROTOTYPE('eventfd',
                                   'int eventfd(unsigned int count, int flags)',
                                   define='HAVE_EVENTFD_UNSIGNED_INT', headers='sys/eventfd.h')

        # Create full path to socket_wrapper
        blddir = os.path.realpath(conf.blddir)
        libsocket_wrapper_so_path = blddir + '/default/third_party/socket_wrapper/libsocket-wrapper.so'

    conf.DEFINE('LIBSOCKET_WRAPPER_SO_PATH', libsocket_wrapper_so_path)
    conf.DEFINE('SOCKET_WRAPPER', 1)

def build(bld):
    if not bld.CONFIG_SET("USING_SYSTEM_SOCKET_WRAPPER"):
        # We need to do it this way or the library wont work.
        # Using private_library=True will add symbol version which
        # breaks preloading!
        bld.SAMBA_LIBRARY('socket_wrapper',
                          source='socket_wrapper.c',
                          deps='dl pthread',
                          install=False,
                          realname='libsocket-wrapper.so')