package/devel/gdb-arc: Add target GDB for ARC

ARC port of GDB is not yet upstream so we need to use
sources from Synopsys GitHub repo.

Given Synopys' commitment to upstream ARC support in GDB
in the nearest future it might be simpler to add a separate
package for ARC GDB instead of patching generic GDB package.
This way once ARC GDB stuff gets uptreamed we'll only need
to remove that new "gdb-arc" package.

Note 1 very minor change in generic gdb package was done -
it now depends on !arc (while "gdb-arc" depends on "arc").

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

package/devel/gdb-arc/Makefile

@@ -0,0 +1,94 @@
+#
+# Copyright (C) 2006-2016 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=gdb-arc
+PKG_VERSION:=arc-2016.03-gdb
+PKG_RELEASE:=1
+
+PKG_SOURCE:=gdb-arc-2016.03-gdb.tar.gz
+PKG_SOURCE_URL:=https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb/archive/$(PKG_VERSION)
+PKG_MD5SUM:=775caaf6385c16f20b6f53c0a2b95f79
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/binutils-gdb-arc-2016.03-gdb
+
+PKG_BUILD_PARALLEL:=1
+PKG_INSTALL:=1
+PKG_LICENSE:=GPL-3.0+
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/gdb-arc/Default
+  SECTION:=devel
+  CATEGORY:=Development
+  DEPENDS:=+!USE_MUSL:libthread-db +PACKAGE_zlib:zlib @arc
+  URL:=http://www.gnu.org/software/gdb/
+endef
+
+define Package/gdb-arc
+$(call Package/gdb-arc/Default)
+  TITLE:=GNU Debugger for ARC
+  DEPENDS+=+libreadline +libncurses +zlib
+endef
+
+define Package/gdb-arc/description
+GDB, the GNU Project debugger, allows you to see what is going on `inside'
+another program while it executes -- or what another program was doing at the
+moment it crashed.
+endef
+
+define Package/gdbserver-arc
+$(call Package/gdb-arc/Default)
+  TITLE:=Remote server for GNU Debugger
+endef
+
+define Package/gdbserver-arc/description
+GDBSERVER is a program that allows you to run GDB on a different machine than the
+one which is running the program being debugged.
+endef
+
+# XXX: add --disable-werror to prevent build failure with arm
+CONFIGURE_ARGS+= \
+	--with-system-readline \
+	--without-expat \
+	--without-lzma \
+	--disable-werror \
+	--disable-binutils \
+	--disable-ld \
+	--disable-gas \
+	--disable-sim
+
+CONFIGURE_VARS+= \
+	ac_cv_search_tgetent="$(TARGET_LDFLAGS) -lncurses -lreadline"
+
+define Build/Compile
+	+$(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR) \
+		DESTDIR="$(PKG_INSTALL_DIR)" \
+		CPPFLAGS="$(TARGET_CPPFLAGS)" \
+		all
+endef
+
+define Build/Install
+	$(MAKE) -C $(PKG_BUILD_DIR) \
+		DESTDIR="$(PKG_INSTALL_DIR)" \
+		CPPFLAGS="$(TARGET_CPPFLAGS)" \
+		install-gdb
+endef
+
+define Package/gdb-arc/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/gdb $(1)/usr/bin/
+endef
+
+define Package/gdbserver-arc/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/gdbserver $(1)/usr/bin/
+endef
+
+$(eval $(call BuildPackage,gdb-arc))
+$(eval $(call BuildPackage,gdbserver-arc))

package/devel/gdb-arc/patches/100-no_extern_inline.patch

@@ -0,0 +1,32 @@
+--- a/sim/common/sim-arange.c
++++ b/sim/common/sim-arange.c
+@@ -280,11 +280,7 @@ sim_addr_range_delete (ADDR_RANGE *ar, a
+   build_search_tree (ar);
+ }
+ 
+-#endif /* DEFINE_NON_INLINE_P */
+-
+-#if DEFINE_INLINE_P
+-
+-SIM_ARANGE_INLINE int
++int
+ sim_addr_range_hit_p (ADDR_RANGE *ar, address_word addr)
+ {
+   ADDR_RANGE_TREE *t = ar->range_tree;
+@@ -301,4 +297,4 @@ sim_addr_range_hit_p (ADDR_RANGE *ar, ad
+   return 0;
+ }
+ 
+-#endif /* DEFINE_INLINE_P */
++#endif /* DEFINE_NON_INLINE_P */
+--- a/sim/common/sim-arange.h
++++ b/sim/common/sim-arange.h
+@@ -73,7 +73,7 @@ extern void sim_addr_range_delete (ADDR_
+ 
+ /* Return non-zero if ADDR is in range AR, traversing the entire tree.
+    If no range is specified, that is defined to mean "everything".  */
+-SIM_ARANGE_INLINE int
++extern int
+ sim_addr_range_hit_p (ADDR_RANGE * /*ar*/, address_word /*addr*/);
+ #define ADDR_RANGE_HIT_P(ar, addr) \
+   ((ar)->range_tree == NULL || sim_addr_range_hit_p ((ar), (addr)))

package/devel/gdb-arc/patches/110-no_testsuite.patch

@@ -0,0 +1,21 @@
+--- a/gdb/configure
++++ b/gdb/configure
+@@ -870,8 +870,7 @@ MAKEINFOFLAGS
+ YACC
+ YFLAGS
+ XMKMF'
+-ac_subdirs_all='testsuite
+-gdbtk
++ac_subdirs_all='gdbtk
+ multi-ice
+ gdbserver'
+ 
+@@ -5610,7 +5610,7 @@ $as_echo "$with_auto_load_safe_path" >&6
+ 
+ 
+ 
+-subdirs="$subdirs testsuite"
++subdirs="$subdirs"
+ 
+ 
+ # Check whether to support alternative target configurations

package/devel/gdb-arc/patches/120-fix-compile-flag-mismatch.patch

@@ -0,0 +1,11 @@
+--- a/gdb/gdbserver/configure
++++ b/gdb/gdbserver/configure
+@@ -2468,7 +2468,7 @@ $as_echo "$as_me: error: \`$ac_var' was
+       ac_cache_corrupted=: ;;
+     ,);;
+     *)
+-      if test "x$ac_old_val" != "x$ac_new_val"; then
++      if test "`echo x$ac_old_val`" != "`echo x$ac_new_val`"; then
+ 	# differences in whitespace do not lead to failure.
+ 	ac_old_val_w=`echo x $ac_old_val`
+ 	ac_new_val_w=`echo x $ac_new_val`

package/devel/gdb/Makefile

@@ -24,7 +24,7 @@ include $(INCLUDE_DIR)/package.mk
 define Package/gdb/Default
   SECTION:=devel
   CATEGORY:=Development
-  DEPENDS:=+!USE_MUSL:libthread-db +PACKAGE_zlib:zlib
+  DEPENDS:=+!USE_MUSL:libthread-db +PACKAGE_zlib:zlib @!arc
   URL:=http://www.gnu.org/software/gdb/
 endef