# comp.sources.misc and is available on CPAN under authors/id/RAM so
# you may fetch it yourself from your nearest archive site.)
#
+#
+# Though this script was generated by metaconfig, it is OK to send
+# patches against it. It's up to the Configure pumpkin to backport
+# the patch to the metaunits if it is accepted.
+# See Porting/pumpkin.pod for more information on metaconfig.
+#
# $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
#
-# Generated on Sun Apr 24 14:17:04 CEST 2005 [metaconfig 3.0 PL70]
+# Generated on Tue Jul 19 13:22:25 CEST 2005 [metaconfig 3.0 PL70]
# (with additional metaconfig patches by perlbug@perl.org)
cat >c1$$ <<EOF
perladmin=''
perlpath=''
d_nv_preserves_uv=''
+d_nv_zero_is_allbits_zero=''
i16size=''
i16type=''
i32size=''
your system supports dynamic loading, it is probably possible to build
a shared libperl.$so. If you will have more than one executable linked
to libperl.$so, this will significantly reduce the size of each
-executable, but it may have a noticeable affect on performance. The
+executable, but it may have a noticeable effect on performance. The
default is probably sensible for your system.
$also
exit(1);
}
EOM
+val=$undef
set dirfd
if eval $compile; then
val="$define"
$rm -f try.* try
+$echo "Checking whether NV 0.0 is all bits zero in memory..." >&4
+: volatile so that the compiler has to store it out to memory.
+if test X"$d_volatile" = X"$define"; then
+ volatile=volatile
+fi
+$cat <<EOP >try.c
+#include <stdio.h>
+#$i_stdlib I_STDLIB
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+#$i_string I_STRING
+#ifdef I_STRING
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+#include <sys/types.h>
+#include <signal.h>
+#ifdef SIGFPE
+$volatile int bletched = 0;
+$signal_t blech(s) int s; { bletched = 1; }
+#endif
+
+int checkit($nvtype d, char *where) {
+ unsigned char *p = (char *)&d;
+ unsigned char *end = p + sizeof(d);
+ int fail = 0;
+
+ while (p < end)
+ fail += *p++;
+
+ if (!fail)
+ return 0;
+
+ p = (char *)&d;
+ printf("No - %s: 0x", where);
+ while (p < end)
+ printf ("%02X", *p++);
+ printf("\n");
+ return 1;
+}
+
+int main(int argc, char **argv) {
+ $nvtype d = 0.0;
+ int fail = 0;
+ fail += checkit(d, "0.0");
+
+ /* The compiler shouldn't be assuming that bletched is 0 */
+ d = bletched;
+
+ fail += checkit(d, "bleched");
+
+#ifdef SIGFPE
+ signal(SIGFPE, blech);
+#endif
+
+ /* Paranoia - the compiler should have no way of knowing that ANSI says
+ that argv[argc] will always be NULL. Actually, if it did assume this it
+ would be buggy, as this is C and main() can be called from elsewhere in
+ the program. */
+ d = argv[argc] ? 1 : 0;
+
+ if (d) {
+ printf("Odd argv[argc]=%p, d=%g\n", argv[argc], d);
+ }
+
+ fail += checkit(d, "ternary");
+
+ memset(&d, sizeof(d), argv[argc] ? 1 : 0);
+
+ if (d != 0.0) {
+ printf("No - memset doesn't give 0.0\n");
+ /* This might just blow up: */
+ printf("(gives %g)\n", d);
+ return 1;
+ }
+
+#ifdef SIGFPE
+ if (bletched) {
+ printf("No - something bleched\n");
+ return 1;
+ }
+#endif
+ if (fail) {
+ printf("No - %d fail(s)\n", fail);
+ return 1;
+ }
+ printf("Yes\n");
+ return 0;
+}
+EOP
+set try
+
+d_nv_zero_is_allbits_zero="$undef"
+if eval $compile; then
+ xxx="`$run ./try`"
+ case "$?" in
+ 0)
+ case "$xxx" in
+ Yes) cat >&4 <<EOM
+0.0 is represented as all bits zero in memory
+EOM
+ d_nv_zero_is_allbits_zero="$define"
+ ;;
+ *) cat >&4 <<EOM
+0.0 is not represented as all bits zero in memory
+EOM
+ d_nv_zero_is_allbits_zero="$undef"
+ ;;
+ esac
+ ;;
+ *) cat >&4 <<EOM
+0.0 is not represented as all bits zero in memory
+EOM
+ d_nv_zero_is_allbits_zero="$undef"
+ ;;
+ esac
+fi
+
+$rm -f try.* try
+
: check for off64_t
echo " "
#endif
#ifndef NSIG
+# ifdef _SIG_MAX
+# define NSIG (_SIG_MAX+1)
+# endif
+#endif
+
+#ifndef NSIG
# ifdef MAXSIG
# define NSIG (MAXSIG+1)
# endif
#ifndef NSIG
# ifdef SIGARRAYSIZE
-# define NSIG (SIGARRAYSIZE+1) /* Not sure of the +1 */
+# define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
# endif
#endif
BSD_4_3 BSD_4_4 BSD_NET2 BSD_TIME BSD_TYPES BSDCOMPAT bsdi
bull c cadmus clipper CMU COFF COMPILER_VERSION
concurrent convex cpu cray CRAY CRAYMPP ctix CX_UX
-CYGWIN DGUX DGUX_SOURCE DJGPP dmert DOLPHIN DPX2 DSO
+CYGWIN DECC DGUX DGUX_SOURCE DJGPP dmert DOLPHIN DPX2 DSO
Dynix DynixPTX ELF encore EPI EXTENSIONS FAVOR_BSD
FILE_OFFSET_BITS FreeBSD GCC_NEW_VARARGS gcos gcx gimpel
GLIBC GLIBC_MINOR
d_nice='$d_nice'
d_nl_langinfo='$d_nl_langinfo'
d_nv_preserves_uv='$d_nv_preserves_uv'
+d_nv_zero_is_allbits_zero='$d_nv_zero_is_allbits_zero'
d_off64_t='$d_off64_t'
d_old_pthread_create_joinable='$d_old_pthread_create_joinable'
d_oldpthreads='$d_oldpthreads'