brltty sets -std=gnu99 which the Solaris headers view as incompatible with

_XOPEN_SOURCE < 600, since XPG5 and prior standards required C89, not C99.

Need to either relax system header checks (bug 23506995) or submit upstream.

--- brltty-5.4/configure.ac

+++ brltty-5.4/configure.ac

@@ -288,7 +288,7 @@ in

brltty_prog_cc_sysflags="-D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=2 -D_BSD_SOURCE -D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED -D_GNU_SOURCE"

;;

solaris*)

- brltty_prog_cc_sysflags="-D_XOPEN_SOURCE=500 -D__EXTENSIONS__"

+ brltty_prog_cc_sysflags="-D_XOPEN_SOURCE=600 -D__EXTENSIONS__"

;;

hpux*)

brltty_prog_cc_sysflags="-D_XOPEN_SOURCE_EXTENDED -D_HPUX_SOURCE"

--- brltty-5.4/Drivers/Braille/EuroBraille/eutp_brl.c

+++ brltty-5.4/Drivers/Braille/EuroBraille/eutp_brl.c

@@ -5,8 +5,6 @@

** Login <obert01@epita.fr>

*/

-#define _XOPEN_SOURCE 500

-

/* globals */

unsigned char extensions[] = {'K', 'L', 'B', 'T', 'A'};

unsigned char positions[] = {3, 7, 16};

--- brltty-5.4/Drivers/Braille/EuroBraille/eutp_transfer.c

+++ brltty-5.4/Drivers/Braille/EuroBraille/eutp_transfer.c

@@ -7,7 +7,6 @@

** Started on Sun Mar 20 16:10:06 2005 Olivier BERT

Last update Fri Jun 1 15:23:17 2007 Olivier BERT

*/

-#define _XOPEN_SOURCE 500

#include <sys/types.h>

#include <dirent.h>

#include <string.h>