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_INTEGERS,
   5 [AC_CHECK_SIZEOF(char, 0)
   6 AC_CHECK_SIZEOF(short int, 0)
   7 AC_CHECK_SIZEOF(int, 0)
   8 AC_CHECK_SIZEOF(long int, 0)
   9 AC_CHECK_SIZEOF(long long int, 0)
  10 for size in 1 2 4 8; do
  11         bits=`expr $size "*" 8`
  12         AC_MSG_CHECKING([for $bits-bit type])
  13         if test $ac_cv_sizeof_int = $size ; then
  14                 res=int
  15         elif test $ac_cv_sizeof_char = $size ; then
  16                 res=char
  17         elif test $ac_cv_sizeof_short_int = $size ; then
  18                 res="short int"
  19         elif test $ac_cv_sizeof_long_int = $size ; then
  20                 res="long int"
  21         elif test $ac_cv_sizeof_long_long_int = $size ; then
  22                 res="long long int"
  23         else
  24                 AC_MSG_RESULT([not found])
  25                 AC_MSG_ERROR([Cannot find $bits-bit integer type.])
  26         fi
  27         AC_MSG_RESULT($res)
  28         AC_DEFINE_UNQUOTED(INTEGER_$bits, $res)
  29         done
  30 ])
  31
  32 dnl BIRD_CHECK_ENDIAN is unused and obsolete
  33 AC_DEFUN(BIRD_CHECK_ENDIAN,
  34 [AC_CACHE_CHECK([CPU endianity], bird_cv_c_endian,[
  35 AC_TRY_RUN([
  36 #include <stdio.h>
  37
  38 unsigned int x = 0x12345678;
  39 unsigned char *z = (unsigned char *) &x;
  40
  41 int main(void)
  42 {
  43   FILE *f = fopen("conftestresult", "w");
  44   if (!f) return 10;
  45   fprintf(f, "%02x %02x %02x %02x", *z, *(z+1), *(z+2), *(z+3));
  46   fclose(f);
  47   exit(0);
  48 }
  49 ],[
  50         endian=`cat conftestresult`
  51         if test "$endian" = "12 34 56 78" ; then
  52                 bird_cv_c_endian=big-endian
  53         elif test "$endian" = "78 56 34 12" ; then
  54                 bird_cv_c_endian=little-endian
  55         fi
  56 ],[endian="test program failed"],[endian="not available, we're cross compiling"])
  57 if test -z "$bird_cv_c_endian" ; then
  58         AC_MSG_RESULT($endian)
  59         AC_MSG_ERROR([Cannot determine CPU endianity.])
  60         fi
  61 ])
  62 case $bird_cv_c_endian in
  63         big-endian)     AC_DEFINE(CPU_BIG_ENDIAN) ;;
  64         little-endian)  AC_DEFINE(CPU_LITTLE_ENDIAN) ;;
  65         esac
  66 ])
  67
  68 AC_DEFUN(BIRD_CHECK_STRUCT_ALIGN,
  69 [AC_CACHE_CHECK([usual alignment of structures],bird_cv_c_struct_align,[
  70 AC_TRY_RUN([
  71 #include <stdio.h>
  72
  73 struct { char x; long int y; } ary[2];
  74
  75 int main(void)
  76 {
  77   FILE *f = fopen("conftestresult", "w");
  78   if (!f) return 10;
  79   fprintf(f, "%d", sizeof(ary)/2);
  80   fclose(f);
  81   exit(0);
  82 }
  83 ],[
  84 bird_cv_c_struct_align=`cat conftestresult`
  85 ],[
  86 AC_MSG_RESULT([test program failed])
  87 AC_MSG_ERROR([Cannot determine structure alignment])
  88 ],[bird_cv_c_struct_align=16])
  89 ])
  90 AC_DEFINE_UNQUOTED(CPU_STRUCT_ALIGN, $bird_cv_c_struct_align)
  91 ])
  92
  93 AC_DEFUN(BIRD_CHECK_TIME_T,
  94 [AC_CACHE_CHECK([characteristics of time_t], bird_cv_type_time_t, [
  95 AC_TRY_RUN([
  96 #include <stdio.h>
  97 #include <sys/time.h>
  98 #include <limits.h>
  99
 100 int main(void)
 101 {
 102   FILE *f = fopen("conftestresult", "w");
 103   if (!f) return 10;
 104   fprintf(f, "%d-bit ", sizeof(time_t)*CHAR_BIT);
 105   if ((time_t) -1 > 0) fprintf(f, "un");
 106   fprintf(f, "signed");
 107   fclose(f);
 108   exit(0);
 109 }
 110 ],[bird_cv_type_time_t=`cat conftestresult`
 111 ],[     AC_MSG_RESULT([test program failed])
 112         AC_MSG_ERROR([Cannot determine time_t size and signedness.])
 113 ],[bird_cv_type_time_t="32-bit signed"])
 114 ])
 115 case "$bird_cv_type_time_t" in
 116         *64-bit*)       AC_DEFINE(TIME_T_IS_64BIT) ;;
 117         esac
 118 case "$bird_cv_type_time_t" in
 119         *unsigned*)     ;;
 120         *)              AC_DEFINE(TIME_T_IS_SIGNED) ;;
 121         esac
 122 ])
 123
 124 AC_DEFUN(BIRD_CHECK_STRUCT_IP_MREQN,
 125 [AC_CACHE_CHECK([for struct ip_mreqn], bird_cv_struct_ip_mreqn,[
 126 AC_TRY_COMPILE([#include <netinet/in.h>
 127 ],[struct ip_mreqn x;
 128 ],[bird_cv_struct_ip_mreqn=yes
 129 ],[bird_cv_struct_ip_mreqn=no
 130 ])])
 131 if test "$bird_cv_struct_ip_mreqn" = yes ; then
 132         AC_DEFINE(HAVE_STRUCT_IP_MREQN)
 133 fi
 134 ])
 135
 136 AC_DEFUN(BIRD_CHECK_PTHREADS,
 137 [
 138   bird_tmp_cflags="$CFLAGS"
 139
 140   CFLAGS="$CFLAGS -pthread"
 141   AC_CACHE_CHECK([whether POSIX threads are available], bird_cv_lib_pthreads,
 142     [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[pthread_t pt; pthread_create(&pt, NULL, NULL, NULL); pthread_spinlock_t lock; pthread_spin_lock(&lock); ]])],
 143                     [bird_cv_lib_pthreads=yes], [bird_cv_lib_pthreads=no])])
 144
 145   CFLAGS="$bird_tmp_cflags"
 146 ])
 147
 148 AC_DEFUN(BIRD_CHECK_GCC_OPTION,
 149 [
 150   bird_tmp_cflags="$CFLAGS"
 151
 152   CFLAGS="$3 $2"
 153   AC_CACHE_CHECK([whether CC supports $2], $1,
 154     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], [$1=yes], [$1=no])])
 155
 156   CFLAGS="$bird_tmp_cflags"
 157 ])
 158
 159 AC_DEFUN(BIRD_ADD_GCC_OPTION,
 160 [
 161   if test "$$1" = yes ; then
 162     CFLAGS="$CFLAGS $2"
 163   fi
 164 ])
 165
 166 # BIRD_CHECK_PROG_FLAVOR_GNU(PROGRAM-PATH, IF-SUCCESS, [IF-FAILURE])
 167 # copied autoconf internal _AC_PATH_PROG_FLAVOR_GNU
 168 m4_define([BIRD_CHECK_PROG_FLAVOR_GNU],
 169 [# Check for GNU $1
 170 case `"$1" --version 2>&1` in
 171 *GNU*)
 172   $2;;
 173 m4_ifval([$3],
 174 [*)
 175   $3;;
 176 ])esac
 177 ])#