Configure: O_NONBLOCK test uses fork() and pipe()

Message-Id: <200706010131.l511V3kv417484@kosh.hut.fi>

p4raw-id: //depot/perl@31323

diff --git a/Configure b/Configure
index bee57d9..dc7a7bf 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -26,7 +26,7 @@
 
 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
 #
-# Generated on Wed May 16 19:31:47 CEST 2007 [metaconfig 3.0 PL70]
+# Generated on Fri Jun  1 08:37:13 CEST 2007 [metaconfig 3.0 PL70]
 # (with additional metaconfig patches by perlbug@perl.org)
 
 cat >c1$$ <<EOF
@@ -12160,6 +12160,14 @@ esac
 set i_fcntl
 eval $setvar
 
+: see if fork exists
+set fork d_fork
+eval $inlibc
+
+: see if pipe exists
+set pipe d_pipe
+eval $inlibc
+
 : check for non-blocking I/O stuff
 case "$h_sysfile" in
 true) echo "#include <sys/file.h>" > head.c;;
@@ -12220,6 +12228,8 @@ echo " "
 echo "Let's see what value errno gets from read() on a $o_nonblock file..." >&4
 case "$eagain" in
 '')
+       case "$d_fork:$d_pipe" in
+       define:define)
        $cat head.c > try.c
        $cat >>try.c <<EOCP
 #include <errno.h>
@@ -12352,6 +12362,12 @@ EOCP
                echo "I can't compile the test program--assuming errno EAGAIN will do."
                eagain=EAGAIN
        fi
+       ;;
+       *)      echo "Can't figure out how to test this--assuming errno EAGAIN will do."
+               eagain=EAGAIN
+               val="$define"
+               ;;
+       esac
        set d_eofnblk
        eval $setvar
        ;;
@@ -12836,10 +12852,6 @@ echo " "
 set d_flockproto flock $i_sysfile sys/file.h
 eval $hasproto
 
-: see if fork exists
-set fork d_fork
-eval $inlibc
-
 : see if fp_class exists
 set fp_class d_fp_class
 eval $inlibc
@@ -14605,7 +14617,7 @@ EOCP
            echo "Yes, it does ($foo)" >&4
            d_libm_lib_version="$define"
        else
-           echo "No, it does not (probably harmless)\n" >&4
+           echo "No, it does not (probably harmless)" >&4
            fi
        $rm_try
        ;;
@@ -15539,10 +15551,6 @@ fi
 set pause d_pause
 eval $inlibc
 
-: see if pipe exists
-set pipe d_pipe
-eval $inlibc
-
 : see if poll exists
 set poll d_poll
 eval $inlibc