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|
dnl ** Additional Autoconf tests for BIRD configure script
dnl ** (c) 1999 Martin Mares <mj@ucw.cz>
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 "$bird_cv_type_time_t" in
*unsigned*)
;;
*)
AC_DEFINE([TIME_T_IS_SIGNED], [1], [Define to 1 if time_t is signed])
;;
esac
])
AC_DEFUN([BIRD_CHECK_PTHREADS],
[
bird_tmp_cflags="$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 from autoconf internal _AC_PATH_PROG_FLAVOR_GNU
AC_DEFUN([BIRD_CHECK_PROG_FLAVOR_GNU],
[
# Check for GNU $1
case `"$1" --version 2>&1` in
*GNU*)
$2
;;
m4_ifval([$3],
[*)
$3
;;
]
)
esac
])
|
