On Monday, December 15 2014, Jakub Jelinek wrote:

> I'd be surprised if all versions of grep supported --text option (e.g. POSIX
> doesn't mention the -a nor --text options), guess
> you'd need to check for that first (early in the script) and add it only if
> it works.

Thanks for the review, Jakub.

Right, it makes sense to check that indeed.  Take a look at the attached
patch please.

> Also, supposedly the options should come before the regexp and
> list of files.

Right, fixed.

> Why isn't the python version used in your case btw?

Because GDB has not yet merged the new Python version into our codebase.
I am working on it now, too.

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Sergio
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diff --git a/contrib/dg-extract-results.sh b/contrib/dg-extract-results.sh
index a83c8e8..ebf93bf 100755
--- a/contrib/dg-extract-results.sh
+++ b/contrib/dg-extract-results.sh
@@ -127,13 +127,20 @@ do
 done
 test $ERROR -eq 0 || exit 1
 
+# Check if grep supports the '--text' option.
+
+GREP_TEXT_OPT="--text"
+if grep --text 2>&1 | grep "unrecognized option" > /dev/null 2>&1 ; then
+  GREP_TEXT_OPT=""
+fi
+
 if [ -z "$TOOL" ]; then
   # If no tool was specified, all specified summary files must be for
   # the same tool.
 
-  CNT=`grep '=== .* tests ===' $SUM_FILES | $AWK '{ print $3 }' | sort -u | wc 
-l`
+  CNT=`grep $GREP_TEXT_OPT '=== .* tests ===' $SUM_FILES | $AWK '{ print $3 }' 
| sort -u | wc -l`
   if [ $CNT -eq 1 ]; then
-    TOOL=`grep '=== .* tests ===' $FIRST_SUM | $AWK '{ print $2 }'`
+    TOOL=`grep $GREP_TEXT_OPT '=== .* tests ===' $FIRST_SUM | $AWK '{ print $2 
}'`
   else
     msg "${PROGNAME}: sum files are for multiple tools, specify a tool"
     msg ""
@@ -144,7 +151,7 @@ else
   # Ignore the specified summary files that are not for this tool.  This
   # should keep the relevant files in the same order.
 
-  SUM_FILES=`grep -l "=== $TOOL" $SUM_FILES`
+  SUM_FILES=`grep $GREP_TEXT_OPT -l "=== $TOOL" $SUM_FILES`
   if test -z "$SUM_FILES" ; then
     msg "${PROGNAME}: none of the specified files are results for $TOOL"
     exit 1
@@ -233,7 +240,7 @@ else
   VARIANTS=""
   for VAR in $VARS
   do
-    grep "Running target $VAR" $SUM_FILES > /dev/null && VARIANTS="$VARIANTS 
$VAR"
+    grep $GREP_TEXT_OPT "Running target $VAR" $SUM_FILES > /dev/null && 
VARIANTS="$VARIANTS $VAR"
   done
 fi
 

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