aclocal.m4

   1 dnl ** Additional Autoconf tests for BIRD configure script
   2 dnl ** (c) 1999 Martin Mares <mj@ucw.cz>
   3
   4 AC_DEFUN([BIRD_CHECK_PTHREADS],
   5 [
   6   bird_tmp_cflags="$CFLAGS"
   7   CFLAGS="$CFLAGS -pthread"
   8
   9   AC_CACHE_CHECK(
  10     [whether POSIX threads are available],
  11     [bird_cv_lib_pthreads],
  12     [
  13       AC_LINK_IFELSE(
  14         [
  15           AC_LANG_PROGRAM(
  16             [ #include <pthread.h> ],
  17             [
  18               pthread_t pt;
  19               pthread_create(&pt, NULL, NULL, NULL);
  20               pthread_spinlock_t lock;
  21               pthread_spin_lock(&lock);
  22             ]
  23           )
  24         ],
  25         [bird_cv_lib_pthreads=yes],
  26         [bird_cv_lib_pthreads=no]
  27       )
  28     ]
  29   )
  30
  31   CFLAGS="$bird_tmp_cflags"
  32 ])
  33
  34 AC_DEFUN([BIRD_CHECK_MPLS_KERNEL],
  35 [
  36   AC_CACHE_CHECK(
  37     [for Linux MPLS headers],
  38     [bird_cv_mpls_kernel],
  39     [
  40       AC_COMPILE_IFELSE(
  41         [
  42           AC_LANG_PROGRAM(
  43             [
  44               #include <linux/lwtunnel.h>
  45               #include <linux/netlink.h>
  46               #include <linux/rtnetlink.h>
  47               #include <sys/socket.h>
  48               void t(int arg);
  49             ],
  50             [
  51               t(AF_MPLS);
  52               t(RTA_VIA);
  53               t(RTA_NEWDST);
  54               t(RTA_ENCAP_TYPE);
  55               t(RTA_ENCAP);
  56               struct rtvia rtvia;
  57               t(LWTUNNEL_ENCAP_MPLS);
  58             ]
  59           )
  60         ],
  61         [bird_cv_mpls_kernel=yes],
  62         [bird_cv_mpls_kernel=no]
  63       )
  64     ]
  65   )
  66 ])
  67
  68
  69 AC_DEFUN([BIRD_CHECK_GCC_OPTION],
  70 [
  71   bird_tmp_cflags="$CFLAGS"
  72   CFLAGS="$3 $2"
  73
  74   AC_CACHE_CHECK(
  75     [whether CC supports $2],
  76     [$1],
  77     [
  78       AC_COMPILE_IFELSE(
  79         [AC_LANG_PROGRAM()],
  80         [$1=yes],
  81         [$1=no]
  82       )
  83     ]
  84   )
  85
  86   CFLAGS="$bird_tmp_cflags"
  87 ])
  88
  89 AC_DEFUN([BIRD_ADD_GCC_OPTION],
  90 [
  91   if test "$$1" = yes ; then
  92     CFLAGS="$CFLAGS $2"
  93   fi
  94 ])
  95
  96 # BIRD_CHECK_PROG_FLAVOR_GNU(PROGRAM-PATH, IF-SUCCESS, [IF-FAILURE])
  97 # copied from autoconf internal _AC_PATH_PROG_FLAVOR_GNU
  98 AC_DEFUN([BIRD_CHECK_PROG_FLAVOR_GNU],
  99 [
 100   # Check for GNU $1
 101   case `"$1" --version 2>&1` in
 102     *GNU*)
 103       $2
 104       ;;
 105   m4_ifval([$3],
 106     [*)
 107       $3
 108       ;;
 109     ]
 110   )
 111   esac
 112 ])