diff --git a/configure b/configure
index 2bc0107cfb..1d0a19b710 100755
--- a/configure
+++ b/configure
@@ -40857,7 +40857,12 @@ case "${host}" in
         ;;
 esac
 
-dedup_flags () { printf %s "$@" | awk -v RS=' +' -v ORS=' ' '$0=="-arch" || $0=="-framework" || !seen[$0]++'; }
+dedup_flags()
+{
+    printf "%s " "$@" |
+        awk 'BEGIN { RS=" "; ORS=" " }
+            { if ($0=="-arch" || $0=="-framework" || !seen[$0]++) print }'
+}
 
 WX_CPPFLAGS=`dedup_flags "$CPPFLAGS"`
 WX_CFLAGS=`dedup_flags "$CFLAGS"`
diff --git a/configure.in b/configure.in
index f54c521523..60f8846056 100644
--- a/configure.in
+++ b/configure.in
@@ -8448,7 +8448,12 @@ dnl Also get rid of duplicates in the flags, which results in dramatically
 dnl shorter build logs and so is well worth it (but preserve some special
 dnl flags which are explicitly allowed to occur multiple times, as all their
 dnl occurrences must be preserved).
-dedup_flags () { printf %s "$@" | awk -v RS=' +' -v ORS=' ' '$0=="-arch" || $0=="-framework" || !seen[[$0]]++'; }
+dedup_flags()
+{
+    printf "%s " "$@" |
+        awk 'BEGIN { RS=" "; ORS=" " }
+            { if ($0=="-arch" || $0=="-framework" || !seen[[$0]]++) print }'
+}
 
 WX_CPPFLAGS=`dedup_flags "$CPPFLAGS"`
 WX_CFLAGS=`dedup_flags "$CFLAGS"`