origcflags="$CFLAGS"
-AC_PREREQ(2.61)
+AC_PREREQ(2.69)
AC_INIT([tinc], m4_esyscmd_s((git describe || echo UNKNOWN) | sed 's/release-//'))
AC_CONFIG_SRCDIR([src/tincd.c])
AM_INIT_AUTOMAKE([std-options subdir-objects nostdinc silent-rules -Wall])
AC_CONFIG_MACRO_DIR([m4])
AM_SILENT_RULES([yes])
-# Enable GNU extensions.
-# Define this here, not in acconfig's @TOP@ section, since definitions
-# in the latter don't make it into the configure-time tests.
-AC_GNU_SOURCE
-AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
+AC_USE_SYSTEM_EXTENSIONS
dnl Checks for programs.
-AC_PROG_CC_C99
+AC_PROG_CC
+AC_PROG_CC_STDC
AC_PROG_CPP
AC_PROG_INSTALL
AM_PROG_CC_C_O
AM_CONDITIONAL(VDE, test "$vde" = true)
AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
AM_CONDITIONAL(WITH_SYSTEMD, test "$systemd" = true)
+AM_CONDITIONAL(WITH_LEGACY_PROTOCOL, test "x$enable_legacy_protocol" != "xno")
AC_CACHE_SAVE
dnl Checks for header files.
dnl We do this in multiple stages, because unlike Linux all the other operating systems really suck and don't include their own dependencies.
-AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h getopt.h])
+AC_CHECK_HEADERS([syslog.h sys/file.h sys/ioctl.h sys/mman.h sys/param.h sys/resource.h sys/socket.h sys/time.h sys/un.h sys/wait.h netdb.h arpa/inet.h dirent.h getopt.h stddef.h])
AC_CHECK_HEADERS([net/if.h net/if_types.h net/ethernet.h net/if_arp.h netinet/in_systm.h netinet/in.h netinet/in6.h netpacket/packet.h],
[], [], [#include "$srcdir/src/have.h"]
)
)
dnl Checks for library functions.
-AC_TYPE_SIGNAL
AC_CHECK_FUNCS([asprintf daemon fchmod flock fork gettimeofday mlockall putenv recvmmsg strsignal nanosleep unsetenv vsyslog devname fdevname],
[], [], [#include "$srcdir/src/have.h"]
)