gdb: update to version 7.8, fix musl build

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 42979

package/devel/gdb/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gdb
-PKG_VERSION:=7.5
+PKG_VERSION:=7.8
 PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/gdb
-PKG_MD5SUM:=24a6779a9fe0260667710de1b082ef61
+PKG_MD5SUM:=bd958fe9019d7c7896f29f6724a764ed
 
 PKG_BUILD_PARALLEL:=1
 PKG_INSTALL:=1

package/devel/gdb/patches/001-gdb-pr14523-mips-signal-number.patch

@@ -1,8 +1,8 @@
 See http://sourceware.org/bugzilla/show_bug.cgi?id=14523
 ---
---- gdb-7.5.org/gdb/common/signals.c	2012-05-24 18:51:37.000000000 +0200
+--- a/gdb/common/signals.c
-+++ gdb-7.5.org/gdb/common/signals.c	2012-08-29 22:32:07.000000000 +0200
++++ b/gdb/common/signals.c
-@@ -346,6 +346,11 @@ 
+@@ -350,6 +350,11 @@ gdb_signal_from_host (int hostsig)
        else if (64 <= hostsig && hostsig <= 127)
  	return (enum gdb_signal)
  	  (hostsig - 64 + (int) GDB_SIGNAL_REALTIME_64);

package/devel/gdb/patches/100-musl_fix.patch

@@ -0,0 +1,28 @@
+--- a/gdb/linux-nat.c
++++ b/gdb/linux-nat.c
+@@ -17,6 +17,7 @@
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+ 
++#include "stopcode.h"
+ #include "defs.h"
+ #include "inferior.h"
+ #include "infrun.h"
+@@ -81,6 +82,10 @@
+ # endif
+ #endif /* HAVE_PERSONALITY */
+ 
++#ifndef __SIGRTMIN
++#define __SIGRTMIN SIGRTMIN
++#endif
++
+ /* This comment documents high-level logic of this file.
+ 
+ Waiting for events in sync mode
+--- /dev/null
++++ b/gdb/stopcode.h
+@@ -0,0 +1,4 @@
++#ifndef W_STOPCODE
++#define W_STOPCODE(sig) ((sig) << 8 | 0x7f)
++#endif
++