[Buildroot] [PATCH] toolchain-external: fix gdbserver copying for ARC GNU tools

[Alexey Brodkin <Alexey.Brodkin@synopsys.com>]

Historically in pre-built ARC GNU tools gdbserver is located in
top-level "target-bin" folder.

Because of that fact if BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY is
selected Buildroot won't find gdbserver (it looks within
SYSROOT/ARCH_SYSROOT folder).

Simplest solution is to use TOOLCHAIN_EXTERNAL_FIXUP_CMDS where copy
everything from "target-bin" foler into SYSROOT/usr/bin.

Reason to copy everything from "target-bin" is to enable possibility in
the future to copy more pre-built target binaries onto target.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
---
 toolchain/toolchain-external/toolchain-external.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk
index c0429bb..d55b6de 100644
--- a/toolchain/toolchain-external/toolchain-external.mk
+++ b/toolchain/toolchain-external/toolchain-external.mk
@@ -396,6 +396,11 @@ else
 TOOLCHAIN_EXTERNAL_SYNOPSYS_ENDIANESS = be
 endif
 TOOLCHAIN_EXTERNAL_SOURCE = arc_gnu_2014.12_prebuilt_uclibc_$(TOOLCHAIN_EXTERNAL_SYNOPSYS_ENDIANESS)_$(TOOLCHAIN_EXTERNAL_SYNOPSYS_CORE)_linux_install.tar.gz
+define TOOLCHAIN_EXTERNAL_FIXUP_CMDS
+	$(Q)SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC))" ; \
+	mkdir -p $${SYSROOT_DIR}/usr/bin ; \
+	cp $(TOOLCHAIN_EXTERNAL_INSTALL_DIR)/target-bin/* $${SYSROOT_DIR}/usr/bin
+endef
 else
 # Custom toolchain
 TOOLCHAIN_EXTERNAL_SITE = $(dir $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_URL)))
-- 
2.1.0