bird/aclocal.m4
Ondrej Zajicek (work) 7a855725f2 Some autoconf cleanups
The patch allows to use autoreconf, replaces some long obsolete
constructs and does some other minor cleanups. Also, the file
configure.in is renamed to configure.ac, as the old name has been
deprecated for a long time.

Thanks to Ruben Kerkhof for the patchset.
2017-03-14 13:53:52 +01:00

182 lines
4.7 KiB
Text

dnl ** Additional Autoconf tests for BIRD configure script
dnl ** (c) 1999 Martin Mares <mj@ucw.cz>
AC_DEFUN([BIRD_CHECK_INTEGERS],
[AC_CHECK_SIZEOF(char, 0)
AC_CHECK_SIZEOF(short int, 0)
AC_CHECK_SIZEOF(int, 0)
AC_CHECK_SIZEOF(long int, 0)
AC_CHECK_SIZEOF(long long int, 0)
AH_TEMPLATE([INTEGER_8], [8-bit integer type])
AH_TEMPLATE([INTEGER_16], [16-bit integer type])
AH_TEMPLATE([INTEGER_32], [32-bit integer type])
AH_TEMPLATE([INTEGER_64], [64-bit integer type])
for size in 1 2 4 8; do
bits=`expr $size "*" 8`
AC_MSG_CHECKING([for $bits-bit type])
if test $ac_cv_sizeof_int = $size ; then
res=int
elif test $ac_cv_sizeof_char = $size ; then
res=char
elif test $ac_cv_sizeof_short_int = $size ; then
res="short int"
elif test $ac_cv_sizeof_long_int = $size ; then
res="long int"
elif test $ac_cv_sizeof_long_long_int = $size ; then
res="long long int"
else
AC_MSG_RESULT([not found])
AC_MSG_ERROR([Cannot find $bits-bit integer type.])
fi
AC_MSG_RESULT($res)
AC_DEFINE_UNQUOTED(INTEGER_$bits, $res)
done
])
dnl BIRD_CHECK_ENDIAN is unused and obsolete
AC_DEFUN([BIRD_CHECK_ENDIAN],
[AC_CACHE_CHECK([CPU endianity], bird_cv_c_endian,[
AC_TRY_RUN([
#include <stdio.h>
unsigned int x = 0x12345678;
unsigned char *z = (unsigned char *) &x;
int main(void)
{
FILE *f = fopen("conftestresult", "w");
if (!f) return 10;
fprintf(f, "%02x %02x %02x %02x", *z, *(z+1), *(z+2), *(z+3));
fclose(f);
exit(0);
}
],[
endian=`cat conftestresult`
if test "$endian" = "12 34 56 78" ; then
bird_cv_c_endian=big-endian
elif test "$endian" = "78 56 34 12" ; then
bird_cv_c_endian=little-endian
fi
],[endian="test program failed"],[endian="not available, we're cross compiling"])
if test -z "$bird_cv_c_endian" ; then
AC_MSG_RESULT($endian)
AC_MSG_ERROR([Cannot determine CPU endianity.])
fi
])
case $bird_cv_c_endian in
big-endian) AC_DEFINE(CPU_BIG_ENDIAN) ;;
little-endian) AC_DEFINE(CPU_LITTLE_ENDIAN) ;;
esac
])
AC_DEFUN([BIRD_CHECK_STRUCT_ALIGN],
[AC_CACHE_CHECK([usual alignment of structures],bird_cv_c_struct_align,[
AC_TRY_RUN([
#include <stdio.h>
struct { char x; long int y; } ary[2];
int main(void)
{
FILE *f = fopen("conftestresult", "w");
if (!f) return 10;
fprintf(f, "%d", sizeof(ary)/2);
fclose(f);
exit(0);
}
],[
bird_cv_c_struct_align=`cat conftestresult`
],[
AC_MSG_RESULT([test program failed])
AC_MSG_ERROR([Cannot determine structure alignment])
],[bird_cv_c_struct_align=16])
])
AC_DEFINE_UNQUOTED([CPU_STRUCT_ALIGN], [$bird_cv_c_struct_align], [Usual alignment of structures])
])
AC_DEFUN([BIRD_CHECK_TIME_T],
[AC_CACHE_CHECK([characteristics of time_t], bird_cv_type_time_t, [
AC_TRY_RUN([
#include <stdio.h>
#include <sys/time.h>
#include <limits.h>
int main(void)
{
FILE *f = fopen("conftestresult", "w");
if (!f) return 10;
fprintf(f, "%d-bit ", sizeof(time_t)*CHAR_BIT);
if ((time_t) -1 > 0) fprintf(f, "un");
fprintf(f, "signed");
fclose(f);
exit(0);
}
],[bird_cv_type_time_t=`cat conftestresult`
],[ AC_MSG_RESULT([test program failed])
AC_MSG_ERROR([Cannot determine time_t size and signedness.])
],[bird_cv_type_time_t="32-bit signed"])
])
case "$bird_cv_type_time_t" in
*64-bit*) AC_DEFINE([TIME_T_IS_64BIT], [1], [Define to 1 if time_t is 64 bit]) ;;
esac
case "$bird_cv_type_time_t" in
*unsigned*) ;;
*) AC_DEFINE([TIME_T_IS_SIGNED], [1], [Define to 1 if time_t is signed]) ;;
esac
])
AC_DEFUN([BIRD_CHECK_STRUCT_IP_MREQN],
[AC_CACHE_CHECK([for struct ip_mreqn], bird_cv_struct_ip_mreqn,[
AC_TRY_COMPILE([#include <netinet/in.h>
],[struct ip_mreqn x;
],[bird_cv_struct_ip_mreqn=yes
],[bird_cv_struct_ip_mreqn=no
])])
if test "$bird_cv_struct_ip_mreqn" = yes ; then
AC_DEFINE([HAVE_STRUCT_IP_MREQN], [1], [Define to 1 if you have struct ip_mreqn])
fi
])
AC_DEFUN([BIRD_CHECK_PTHREADS],
[
bird_tmp_cflags="$CFLAGS"
CFLAGS="$CFLAGS -pthread"
AC_CACHE_CHECK([whether POSIX threads are available], bird_cv_lib_pthreads,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[pthread_t pt; pthread_create(&pt, NULL, NULL, NULL); pthread_spinlock_t lock; pthread_spin_lock(&lock); ]])],
[bird_cv_lib_pthreads=yes], [bird_cv_lib_pthreads=no])])
CFLAGS="$bird_tmp_cflags"
])
AC_DEFUN([BIRD_CHECK_GCC_OPTION],
[
bird_tmp_cflags="$CFLAGS"
CFLAGS="$3 $2"
AC_CACHE_CHECK([whether CC supports $2], $1,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], [$1=yes], [$1=no])])
CFLAGS="$bird_tmp_cflags"
])
AC_DEFUN([BIRD_ADD_GCC_OPTION],
[
if test "$$1" = yes ; then
CFLAGS="$CFLAGS $2"
fi
])
# BIRD_CHECK_PROG_FLAVOR_GNU(PROGRAM-PATH, IF-SUCCESS, [IF-FAILURE])
# copied autoconf internal _AC_PATH_PROG_FLAVOR_GNU
m4_define([BIRD_CHECK_PROG_FLAVOR_GNU],
[# Check for GNU $1
case `"$1" --version 2>&1` in
*GNU*)
$2;;
m4_ifval([$3],
[*)
$3;;
])esac
])#