Fix FTBFS with glibc 2.26

Origin: http://downloads.nutyx.org/x86_64/development/base/gpm/gpm-1.20.7-glibc-2.26-1.patch
Bug: https://github.com/telmich/gpm/issues/21
Bug-Debian: https://bugs.debian.org/886903
Bug-LFS: http://wiki.linuxfromscratch.org/blfs/ticket/9616#ticket

Gbp-Pq: Name 94_gpm-1.20.7-glibc-2.26-1.patch

src/daemon/open_console.c

@@ -24,6 +24,10 @@
 #include <sys/ioctl.h>              /* ioctl             */
 #include <sys/types.h>              /* major()           */
 
+#ifdef HAVE_SYS_SYSMACROS_H
+#include <sys/sysmacros.h>          /* major() w/newer glibc */
+#endif
+
 /* Linux specific (to be outsourced in gpm2 */
 #include <linux/serial.h>           /* for serial console check */
 #include <asm/ioctls.h>            /* for serial console check */

src/prog/gpm-root.y

@@ -443,6 +443,7 @@ void f__fix(struct passwd *pass)
 }
 
 /*---------------------------------------------------------------------*/
+#if 0
 static int f_debug_one(FILE *f, Draw *draw)
 {
    DrawItem *ip;
@@ -465,6 +466,7 @@ static int f_debug_one(FILE *f, Draw *draw)
 #undef LINE
    return 0;
 }
+#endif
 
 int f_debug(int mode, DrawItem *self, int uid)
 {
@@ -960,10 +962,8 @@ static inline void scr_dump(int fd, FILE *f, unsigned char *buffer, int vc)
 /*------------*/
 static inline void scr_restore(int fd, FILE *f, unsigned char *buffer, int vc)
 {
-   int x,y, dumpfd;
+   int dumpfd;
    char dumpname[20];
-
-   x=buffer[2]; y=buffer[3];
    
    /* WILL NOT WORK WITH DEVFS! FIXME! */
    sprintf(dumpname,"/dev/vcsa%i",vc);
@@ -1196,11 +1196,7 @@ int main(int argc, char **argv)
                                                         LOG_DAEMON : LOG_USER);
    /* reap your zombies */
    childaction.sa_handler=reap_children;
-#if defined(__GLIBC__)
-   __sigemptyset(&childaction.sa_mask);
-#else /* __GLIBC__ */
-   childaction.sa_mask=0;
-#endif /* __GLIBC__ */
+   sigemptyset(&childaction.sa_mask);
    childaction.sa_flags=SA_INTERRUPT; /* need to break the select() call */
    sigaction(SIGCHLD,&childaction,NULL);