cflags.SH: omit a needless process in generated file

Using the shell "case" statement rather than grep(1) will save a process on
every core C file compiled.

1 files changed, 4 insertions, 4 deletions

diff --git a/cflags.SH b/cflags.SH
index bd32840407..3af1e97a38 100755
--- a/cflags.SH
+++ b/cflags.SH
@@ -485,10 +485,10 @@ for file do
 
     # allow variables like toke_cflags to be evaluated
 
-    if echo $file | grep -v / >/dev/null
-    then
-      eval 'eval ${'"${file}_cflags"'-""}'
-    fi
+    case "$file" in
+    */*) ;;
+    *) eval 'eval ${'"${file}_cflags"'-""}' ;;
+    esac
 
     # or customize here