Re: Configure test for selectbits busted

	Message-Id: <199810010837.LAA31371@alpha.hut.fi>

p4raw-id: //depot/perl@1917

diff --git a/Configure b/Configure
index 702862d..de6c3d2 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -10867,13 +10867,13 @@ EOM
 #include <sys/select.h>
 #endif
 #include <stdio.h>
-#define S sizeof($selecttype)
+$selecttype b;
+#define S sizeof(*(b))
 #define MINBITS        64
 #define NBYTES (S * 8 > MINBITS ? S : MINBITS/8)
 #define NBITS  (NBYTES * 8)
 int main() {
     char s[NBYTES];
-    $selecttype b;
     struct timeval t;
     int i;
     FILE* fp;
@@ -10901,6 +10901,13 @@ EOCP
                if eval $compile_ok; then
                        selectminbits=`./try`
                        case "$selectminbits" in
+                       '')     cat >&4 <<EOM
+Cannot figure out on how many bits at a time your select() operates.
+I'll play safe and guess it is 32 bits.
+EOM
+                               selectminbits=32
+                               bits="32 bits"
+                               ;;
                        1)      bits="1 bit" ;;
                        *)      bits="$selectminbits bits" ;;
                        esac