gdb: add avr32 special verson

 * Add a new gdb version for AVR32 in Config.in

 * Use a special mirror for this gdb version in gdb.mk

 * Do not try to apply patches when the patch directory does not exist
   in gdb.mk

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

toolchain/gdb/Config.in

@@ -20,7 +20,7 @@ config BR2_PACKAGE_GDB_HOST
 choice
 	prompt "GDB debugger Version"
 	default BR2_GDB_VERSION_6_8 if !BR2_avr32
-	default BR2_GDB_VERSION_6_7_1 if BR2_avr32
+	default BR2_GDB_VERSION_6_7_1_AVR32_2_1_5 if BR2_avr32
 	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_GDB_SERVER || BR2_PACKAGE_GDB_HOST
 	help
 	  Select the version of gdb you wish to use.
@@ -43,6 +43,10 @@ choice
 	config BR2_GDB_VERSION_6_7_1
 		bool "gdb 6.7.1"
 
+	config BR2_GDB_VERSION_6_7_1_AVR32_2_1_5
+		depends on BR2_avr32
+		bool "gdb 6.7.1-avr32-2.1.5"
+
 	config BR2_GDB_VERSION_6_8
 		bool "gdb 6.8"
 		depends on !BR2_avr32
@@ -55,4 +59,5 @@ config BR2_GDB_VERSION
 	default "6.5"      if BR2_GDB_VERSION_6_5
 	default "6.6"      if BR2_GDB_VERSION_6_6
 	default "6.7.1"    if BR2_GDB_VERSION_6_7_1
+	default "6.7.1-avr32-2.1.5" if BR2_GDB_VERSION_6_7_1_AVR32_2_1_5
 	default "6.8"      if BR2_GDB_VERSION_6_8

toolchain/gdb/gdb.mk

@@ -11,11 +11,14 @@ GDB_SOURCE:=gdb-$(GDB_OFFICIAL_VERSION).tar.bz2
 GDB_CAT:=$(BZCAT)
 
 ifeq ($(BR2_TOOLCHAIN_EXTERNAL_SOURCE),y)
-GDB_SITE:=$(VENDOR_SITE)
-GDB_PATCH_DIR:=toolchain/gdb/ext_source/$(VENDOR_PATCH_DIR)/$(GDB_OFFICIAL_VERSION)
+ GDB_SITE:=$(VENDOR_SITE)
+ GDB_PATCH_DIR:=toolchain/gdb/ext_source/$(VENDOR_PATCH_DIR)/$(GDB_OFFICIAL_VERSION)
+else ifeq ($(findstring avr32,$(GDB_VERSION)),avr32)
+ GDB_SITE:=ftp://www.at91.com/pub/buildroot/
+ GDB_PATCH_DIR:=toolchain/gdb/$(GDB_OFFICIAL_VERSION)
 else
-GDB_SITE:=$(BR2_GNU_MIRROR)/gdb
-GDB_PATCH_DIR:=toolchain/gdb/$(GDB_OFFICIAL_VERSION)
+ GDB_SITE:=$(BR2_GNU_MIRROR)/gdb
+ GDB_PATCH_DIR:=toolchain/gdb/$(GDB_OFFICIAL_VERSION)
 endif
 
 ifneq ($(filter xtensa%,$(ARCH)),)
@@ -37,7 +40,9 @@ ifeq ($(GDB_VERSION),snapshot)
 		tar jtf $(DL_DIR)/$(GDB_SOURCE) | head -1 | cut -d"/" -f1)
 	ln -sf $(TOOLCHAIN_DIR)/$(shell tar jtf $(DL_DIR)/$(GDB_SOURCE) | head -1 | cut -d"/" -f1) $(GDB_DIR)
 endif
+ifneq ($(wildcard $(GDB_PATCH_DIR)),)
 	toolchain/patch-kernel.sh $(GDB_DIR) $(GDB_PATCH_DIR) \*.patch $(GDB_PATCH_EXTRA)
+endif
 	$(CONFIG_UPDATE) $(@D)
 	touch $@