Fix header file generation to not be confused by empty (but non-NULL) option string.

You shouldn't use "" as an option string because a NULL allows toy_init()
to avoid calling the option parsing logic entirely, which lets it drop out
when nothing's using it (ala scripts/single.sh builds). That said, init.c
is currently using a "" option string and a USE_ macro taking advantage
of string concatenation may require a "" option config, so...

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/make.sh b/scripts/make.sh
index 9a37b960..5ed9df42 100755
--- a/scripts/make.sh
+++ b/scripts/make.sh
@@ -95,10 +95,10 @@ do
   # Run result through preprocessor, glue together " " gaps leftover from USE
   # macros, delete comment lines, print any line with a quoted optstring,
   # turn any non-quoted opstring (NULL or 0) into " " (because fscanf can't
-  # handle "" with nothing in it).
+  # handle "" with nothing in it, and mkflags uses that).
 
   ) | ${CROSS_COMPILE}${CC} -E - | \
-    sed -n -e 's/" *"//g;/^#/d;s/"/"/p' -e 's/ *$//;s/ [^" ]*$/ " "/p'
+    sed -n -e 's/" *"//g;/^#/d;t clear;:clear;s/"/"/p;t;s/\( [AB] \).*/\1 " "/p'
 
 # Sort resulting line pairs and glue them together into triplets of
 #   command "flags" "allflags"