buildsys: fixup unifdef state in skiphash

attempt to fix unifdef swallowing -f defundefile lines

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

Makefile.in

@@ -67,7 +67,7 @@ MAKEFLAGS += -L
 $(top_builddir)include/config/linuxthreads/old.h $(top_builddir)include/config/linuxthreads/new.h:
 	@true
 
-$(top_builddir)include/generated/unifdef_config.h: $(top_builddir)include/bits/uClibc_config.h| $(top_builddir)include/generated
+$(top_builddir)include/generated/unifdef_config.h: $(top_builddir)include/bits/uClibc_config.h | $(top_builddir)include/generated
 	@$(disp_gen)
 	$(Q)$(SED) -e '1,3d' $^ > $@
 

extra/scripts/install_headers.sh

@@ -64,7 +64,7 @@ while read -r filename; do
 		"${srcdir}/$filename" \
 	| sed -e '/^rtld_hidden_proto[ 	]*([a-zA-Z0-9_]*)$/d' \
 	| sed -e '/^lib\(c\|m\|resolv\|dl\|intl\|rt\|nsl\|util\|crypt\|pthread\)_hidden_proto[ 	]*([a-zA-Z0-9_]*)$/d' \
-	>"${dstdir}/$filename"
+	> "${dstdir}/$filename"
 done
 )
 

extra/scripts/unifdef.c

@@ -1098,7 +1098,7 @@ skiphash(void)
 	const char *cp;
 
 	linenum++;
-	if (fgets(tline, MAXLINE, input) == NULL) {
+	if (linestate == LS_START && fgets(tline, MAXLINE, input) == NULL) {
 		if (ferror(input))
 			err(2, "can't read %s", filename);
 		else
@@ -1458,9 +1458,7 @@ static bool
 defundef(void)
 {
 	const char *cp, *kw, *sym, *val, *end;
-	Comment_state wascomment;
 
-	wascomment = incomment;
 	cp = skiphash();
 	if (cp == NULL)
 		return (false);