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Viewing changes to m4/reorganization/code_checks/select.m4

  • Committer: Package Import Robot
  • Author(s): Scott Kitterman
  • Date: 2014-07-15 01:08:10 UTC
  • mfrom: (0.35.47 sid)
  • Revision ID: package-import@ubuntu.com-20140715010810-ru66ek4fun2iseba
Tags: 0.98.4+dfsg-2~ubuntu13.10.1
https://launchpad.net/bugs/1341962
No-change backport to saucy (LP: #1341962)

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m4/reorganization/code_checks/select.m4
 
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dnl Check if <sys/select.h> needs to be included for fd_set
 
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AC_MSG_CHECKING([for fd_set])
 
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AC_HEADER_EGREP([fd_mask], [sys/select.h], [have_fd_set=yes])
 
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if test "$have_fd_set" = yes; then
 
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        AC_DEFINE([HAVE_SYS_SELECT_H], 1, "have <sys/select.h>")
 
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        AC_MSG_RESULT([yes, found in sys/select.h])
 
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else
 
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        AC_TRY_COMPILE([#include <sys/time.h>
 
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                        #include <sys/types.h>
 
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                        #ifdef HAVE_UNISTD_H
 
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                        #include <unistd.h>
 
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                        #endif],
 
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                [fd_set readMask, writeMask;], have_fd_set=yes, have_fd_set=no)
 
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        if test "$have_fd_set" = yes; then
 
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                AC_MSG_RESULT([yes, found in sys/types.h])
 
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        else
 
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                AC_DEFINE([NO_FD_SET], 1, "no fd_set")
 
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                AC_MSG_RESULT(no)
 
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        fi
 
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fi
 
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AC_MSG_CHECKING([default FD_SETSIZE value])
 
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AC_TRY_RUN([
 
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#include <stdio.h>
 
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#include <unistd.h>
 
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#include <sys/time.h>
 
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#ifdef HAVE_SYS_SELECT_H
 
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#include <sys/select.h>
 
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#endif
 
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#ifdef HAVE_SYS_TYPES_H
 
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#include <sys/types.h>
 
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#endif
 
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#include <errno.h>
 
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int main(void) {
 
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        FILE *fp = fopen("conftestval", "w");
 
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        if(fp) {
 
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                if(fprintf (fp, "%d\n", FD_SETSIZE) < 1)  {
 
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                        perror("fprintf failed");
 
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                        return errno;
 
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                }
 
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        } else {
 
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                perror("fopen failed");
 
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                return errno;
 
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        }
 
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        return 0;
 
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}
 
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],
 
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DEFAULT_FD_SETSIZE=`cat conftestval`,
 
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DEFAULT_FD_SETSIZE=256,
 
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DEFAULT_FD_SETSIZE=256)
 
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AC_MSG_RESULT([$DEFAULT_FD_SETSIZE])
 
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AC_DEFINE_UNQUOTED([DEFAULT_FD_SETSIZE], $DEFAULT_FD_SETSIZE, "default FD_SETSIZE value")