workaround lex build warnings so we can use -Werror with them too

git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1969 b68d4a1b-bc3d-0410-92ed-d4ac073336b7

urjtag/ChangeLog

@@ -1,3 +1,11 @@
+2011-07-13  Mike Frysinger  <vapier@gentoo.org>
+
+  * include/lex.h: New file for lex workarounds.
+  * src/bsdl/vhdl_flex.l, src/bsdl/bsdl_flex.l, src/svf/svf_flex.l: Pull
+    in new lex.h header to workaround random gcc warnings.
+  * src/bsdl/Makefile.am, src/svf/Makefile.am: Drop -Wno-error now that
+    the lex files compile warning free.
+
 2011-07-13  Jie Zhang  <jie.zhang@analog.com>
 
   * include/urjtag/cable.h (urj_cable_param_key_t): Add

urjtag/include/lex.h

@@ -0,0 +1,16 @@
+/*
+ * A little glue to keep generated lex code warning free
+ */
+
+#ifndef _LEX_H
+#define _LEX_H
+
+#include "ansidecl.h"
+
+/* Fix up warnings from generated lex code */
+static int input (yyscan_t) ATTRIBUTE_UNUSED;
+static void yyunput (int, char *, yyscan_t) ATTRIBUTE_UNUSED;
+int lex_get_column (yyscan_t);
+void lex_set_column (int, yyscan_t);
+
+#endif

urjtag/src/bsdl/Makefile.am

@@ -46,10 +46,6 @@ noinst_HEADERS = \
 
 AM_CFLAGS = $(WARNINGCFLAGS)
 
-libbsdl_flex_la_CFLAGS = \
-	$(AM_CFLAGS) \
-	-Wno-error
-
 # additional dependencies
 # - *_flex files must be processed after their *_bison counterparts
 #   to ensure that *_bison.h is present

urjtag/src/bsdl/bsdl_flex.l

@@ -147,6 +147,11 @@ static char *new_string (urj_bsdl_scan_extra_t *, const char *);
 #define BIN_X   2
 #define HEX     3
 
+/* Fix up warnings from generated lex code */
+#define lex_get_column yyget_column
+#define lex_set_column yyset_column
+#include "lex.h"
+
 %}
 %a  2800
 %e  1200

urjtag/src/bsdl/vhdl_flex.l

@@ -148,6 +148,11 @@ static char *new_string (urj_bsdl_scan_extra_t *, const char *);
 #define DECIMAL 1
 #define BIN_X   2
 
+/* Fix up warnings from generated lex code */
+#define lex_get_column yyget_column
+#define lex_set_column yyset_column
+#include "lex.h"
+
 %}
 %a  2800
 %e  1200

urjtag/src/svf/Makefile.am

@@ -37,10 +37,6 @@ libsvf_flex_la_SOURCES = \
 
 AM_CFLAGS = $(WARNINGCFLAGS)
 
-libsvf_flex_la_CFLAGS = \
-	$(AM_CFLAGS) \
-	-Wno-error
-
 # additional dependencies
 # - *_flex files must be processed after their *_bison counterparts
 #   to ensure that *_bison.h is present

urjtag/src/svf/svf_flex.l

@@ -66,6 +66,11 @@ int yywrap(yyscan_t scanner)
         yylloc->first_line = yylloc->last_line = yylloc->first_column = yylloc->last_column = 1; \
     } while (0)
 
+/* Fix up warnings from generated lex code */
+#define lex_get_column yyget_column
+#define lex_set_column yyset_column
+#include "lex.h"
+
 %}
 
 %pointer