diff options
authorThomas De Schampheleire <>2013-07-30 16:32:30 (GMT)
committer Thomas Petazzoni <>2013-08-10 19:11:12 (GMT)
commit97565866e8a1da66d86d36b9cbd28fb1ffb8c2b2 (patch)
parent1f3078b1cccdc0b60e6eac616c25af7957246694 (diff)
toolchain-external: don't create gdb symlink when building host-gdb
The external-toolchain infrastructure creates symbolic links for all tools in the host directory. However, when buildroot builds its own version of a cross debugger (BR2_PACKAGE_HOST_GDB), and the toolchain also provides a cross debugger, there would be two symbolic links for gdb in the host directory, which is confusing. An example use case is where the external toolchain only provides a 64-bit gdbserver (e.g. Cavium Networks SDK) but the target is completely 32-bit (e.g. n32 ABI). In this case, using gdbserver on target requires copying a bunch of 64-bit libraries to the target as well, just for gdb. In this case, one can let buildroot build both gdbserver as cross-gdb (both in 32-bit). This patch modifies the symlink creation so that no gdb (or gdbtui) symlink is created if buildroot is going to build a cross-gdb. Signed-off-by: Thomas De Schampheleire <> Signed-off-by: Thomas Petazzoni <>
1 files changed, 8 insertions, 2 deletions
diff --git a/toolchain/toolchain-external/ b/toolchain/toolchain-external/
index a3c40c8..01be85c 100644
--- a/toolchain/toolchain-external/
+++ b/toolchain/toolchain-external/
@@ -531,8 +531,9 @@ ifeq ($(BR2_BFIN_INSTALL_FLAT_SHARED),y)
TOOLCHAIN_EXTERNAL_INSTALL += $(STAMP_DIR)/ext-toolchain-bfin-shared-flat-installed
-# Build toolchain wrapper for preprocessor, C and C++ compiler, and setup
-# symlinks for everything else
+# Build toolchain wrapper for preprocessor, C and C++ compiler and setup
+# symlinks for everything else. Skip gdb symlink when we are building our
+# own gdb to prevent two gdb's in output/host/usr/bin.
$(HOST_DIR)/usr/bin/ext-toolchain-wrapper: $(TOOLCHAIN_EXTERNAL_INSTALL)
$(Q)$(call MESSAGE,"Building ext-toolchain wrapper")
mkdir -p $(HOST_DIR)/usr/bin; cd $(HOST_DIR)/usr/bin; \
@@ -542,6 +543,11 @@ $(HOST_DIR)/usr/bin/ext-toolchain-wrapper: $(TOOLCHAIN_EXTERNAL_INSTALL)
*cc|*cc-*|*++|*++-*|*cpp) \
ln -sf $(@F) $$base; \
;; \
+ *gdb|*gdbtui) \
+ if test "$(BR2_PACKAGE_HOST_GDB)" != "y"; then \
+ ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%../..%') .; \
+ fi \
+ ;; \
*) \
ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%../..%') .; \
;; \