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Diffstat (limited to 'mcon/U/d_fd_set.U')
| -rw-r--r-- | mcon/U/d_fd_set.U | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/mcon/U/d_fd_set.U b/mcon/U/d_fd_set.U new file mode 100644 index 0000000..8e13de2 --- /dev/null +++ b/mcon/U/d_fd_set.U @@ -0,0 +1,138 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic Licence, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic Licence; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: $Log: d_fd_set.U,v $ +?RCS: Revision 3.0.1.3 1997/02/28 15:33:16 ram +?RCS: patch61: added ?F: metalint hint +?RCS: +?RCS: Revision 3.0.1.2 1994/06/20 06:57:23 ram +?RCS: patch30: extended scope for fd_set checks (ADO) +?RCS: +?RCS: Revision 3.0.1.1 1994/01/24 14:06:27 ram +?RCS: patch16: comments for HAS_FD_* symbols were not consistent +?RCS: +?RCS: Revision 3.0 1993/08/18 12:06:02 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:d_fd_set d_fd_macros d_fds_bits: cat +cc +ccflags rm Oldconfig \ + d_socket i_systime i_sysselct +?MAKE: -pick add $@ %< +?S:d_fd_set: +?S: This variable contains the eventual value of the HAS_FD_SET symbol, +?S: which indicates if your C compiler knows about the fd_set typedef. +?S:. +?S:d_fd_macros: +?S: This variable contains the eventual value of the HAS_FD_MACROS symbol, +?S: which indicates if your C compiler knows about the macros which +?S: manipulate an fd_set. +?S:. +?S:d_fds_bits: +?S: This variable contains the eventual value of the HAS_FDS_BITS symbol, +?S: which indicates if your fd_set typedef contains the fds_bits member. +?S: If you have an fd_set typedef, but the dweebs who installed it did +?S: a half-fast job and neglected to provide the macros to manipulate +?S: an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe. +?S:. +?C:HAS_FD_SET: +?C: This symbol, when defined, indicates presence of the fd_set typedef +?C: in <sys/types.h> +?C:. +?C:HAS_FD_MACROS: +?C: This symbol, when defined, indicates presence of the macros used to +?C: manipulate an fd_set. +?C:. +?C:HAS_FDS_BITS: +?C: This symbol, when defined, indicates presence of the fds_bits member in +?C: fd_set. This knowledge is useful if fd_set is available but the macros +?C: aren't. +?C:. +?H:#$d_fd_set HAS_FD_SET /**/ +?H:#$d_fd_macros HAS_FD_MACROS /**/ +?H:#$d_fds_bits HAS_FDS_BITS /**/ +?H:. +?F:!fd_set +: check for fd_set items +$cat <<EOM + +Checking to see how well your C compiler handles fd_set and friends ... +EOM +?X: The FD_SET macros can be in strange places. On some SysV-based +?X: systems, they are in <sys/bsdtypes.h>, which is included (perhaps) +?X: by <sys/socket.h>. We won't force people to include +?X: <sys/bsdtypes.h> because it might introduce other +?X: incompatibilities. +$cat >fd_set.c <<EOCP +#$i_systime I_SYS_TIME +#$i_sysselct I_SYS_SELECT +#$d_socket HAS_SOCKET +#include <sys/types.h> +#ifdef HAS_SOCKET +#include <sys/socket.h> /* Might include <sys/bsdtypes.h> */ +#endif +#ifdef I_SYS_TIME +#include <sys/time.h> +#endif +#ifdef I_SYS_SELECT +#include <sys/select.h> +#endif +int main() { + fd_set fds; + +#ifdef TRYBITS + if(fds.fds_bits); +#endif + +#if defined(FD_SET) && defined(FD_CLR) && defined(FD_ISSET) && defined(FD_ZERO) + exit(0); +#else + exit(1); +#endif +} +EOCP +if $cc $ccflags -DTRYBITS -o fd_set fd_set.c >fd_set.out 2>&1 ; then + d_fds_bits="$define" + d_fd_set="$define" + echo "Well, your system knows about the normal fd_set typedef..." >&4 + if ./fd_set; then + echo "and you have the normal fd_set macros (just as I'd expect)." >&4 + d_fd_macros="$define" + else + $cat >&4 <<'EOM' +but not the normal fd_set macros! Gaaack! I'll have to cover for you. +EOM + d_fd_macros="$undef" + fi +else + $cat <<'EOM' +Hmm, your compiler has some difficulty with fd_set. Checking further... +EOM + if $cc $ccflags -o fd_set fd_set.c >fd_set.out 2>&1 ; then + d_fds_bits="$undef" + d_fd_set="$define" + echo "Well, your system has some sort of fd_set available..." >&4 + if ./fd_set; then + echo "and you have the normal fd_set macros." >&4 + d_fd_macros="$define" + else + $cat <<'EOM' +but not the normal fd_set macros! Gross! More work for me... +EOM + d_fd_macros="$undef" + fi + else + echo "Well, you got zip. That's OK, I can roll my own fd_set stuff." >&4 + d_fd_set="$undef" + d_fds_bits="$undef" + d_fd_macros="$undef" + fi +fi +$rm -f fd_set* + + |