[thirdparty/bird.git] / aclocal.m4

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)
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)
])

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 "$bird_cv_type_time_t" in
	*64-bit*)	AC_DEFINE(TIME_T_IS_64BIT) ;;
	esac
case "$bird_cv_type_time_t" in
	*unsigned*)	;;
	*)		AC_DEFINE(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)
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
])#
Commit	Line	Data
2f9bcf97 MM	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)
42a0c054 OZ	9	AC_CHECK_SIZEOF(long long int, 0)
42a0c054 OZ	10	for size in 1 2 4 8; do
2f9bcf97 MM	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"
42a0c054 OZ	21	elif test $ac_cv_sizeof_long_long_int = $size ; then
42a0c054 OZ	22	res="long long int"
2f9bcf97 MM	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, $res)
	29	done
	30	])
	31
e6ff7a08	32	dnl BIRD_CHECK_ENDIAN is unused and obsolete
2f9bcf97 MM	33	AC_DEFUN(BIRD_CHECK_ENDIAN,
	34	[AC_CACHE_CHECK([CPU endianity], bird_cv_c_endian,[
	35	AC_TRY_RUN([
	36	#include <stdio.h>
	37
	38	unsigned int x = 0x12345678;
	39	unsigned char z = (unsigned char ) &x;
	40
	41	int main(void)
	42	{
	43	FILE *f = fopen("conftestresult", "w");
	44	if (!f) return 10;
	45	fprintf(f, "%02x %02x %02x %02x", z, (z+1), (z+2), (z+3));
	46	fclose(f);
	47	exit(0);
	48	}
	49	],[
	50	endian=`cat conftestresult`
	51	if test "$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 "$bird_cv_type_time_t" in
119	unsigned) ;;
120	*) AC_DEFINE(TIME_T_IS_SIGNED) ;;
121	esac
122	])
61fb537c MM	123
61fb537c MM	124	AC_DEFUN(BIRD_CHECK_STRUCT_IP_MREQN,
170c984a	125	[AC_CACHE_CHECK([for struct ip_mreqn], bird_cv_struct_ip_mreqn,[
61fb537c MM	126	AC_TRY_COMPILE([#include <netinet/in.h>
	127	],[struct ip_mreqn x;
	128	],[bird_cv_struct_ip_mreqn=yes
	129	],[bird_cv_struct_ip_mreqn=no
	130	])])
	131	if test "$bird_cv_struct_ip_mreqn" = yes ; then
	132	AC_DEFINE(HAVE_STRUCT_IP_MREQN)
	133	fi
	134	])
416e3ee4	135
1ec52253 OZ	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="$bird_tmp_cflags"
	146	])
	147
efd6d12b OZ	148	AC_DEFUN(BIRD_CHECK_GCC_OPTION,
	149	[
	150	bird_tmp_cflags="$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	])
b1c030b0	165
8de11deb OZ	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	])#