sdk: invoke bundle-libraries.sh w/o buildroot dirs in $PATH

Invoke bundle-libraries.sh with any buildroot related directory entries
removed from $PATH to avoid picking up cross versions of utilities like
ldd which will not properly work when used against host executables.

This should fix executable bundling for glibc-target SDKs.

Signed-off-by: Jo-Philipp Wich <[email protected]>

target/sdk/Makefile

@@ -20,6 +20,9 @@ STAGING_SUBDIR_HOST := staging_dir/host
 STAGING_SUBDIR_TARGET := staging_dir/$(TARGET_DIR_NAME)
 STAGING_SUBDIR_TOOLCHAIN := staging_dir/toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)_$(LIBC)$(if $(CONFIG_arm),_eabi)
 
+BUNDLER_PATH := $(subst $(space),:,$(filter-out $(TOPDIR)/%,$(subst :,$(space),$(PATH))))
+BUNDLER_COMMAND := PATH=$(BUNDLER_PATH) $(XARGS) $(SCRIPT_DIR)/bundle-libraries.sh $(SDK_BUILD_DIR)/$(STAGING_SUBDIR_HOST)
+
 EXCLUDE_DIRS:= \
 	*/stamp \
 	*/stampfiles \
@@ -104,7 +107,7 @@ $(BIN_DIR)/$(SDK_NAME).tar.xz: clean
 	(cd $(SDK_BUILD_DIR); find $(STAGING_SUBDIR_HOST)/bin $(STAGING_SUBDIR_HOST)/usr/bin \
 		$(STAGING_SUBDIR_TOOLCHAIN)/bin $(STAGING_SUBDIR_TOOLCHAIN)/*/bin $(STAGING_SUBDIR_TOOLCHAIN)/libexec \
 		$(KDIR_BASE) \
-		-type f | $(XARGS) $(SCRIPT_DIR)/bundle-libraries.sh $(SDK_BUILD_DIR)/$(STAGING_SUBDIR_HOST))
+		-type f | $(BUNDLER_COMMAND))
 
 	@-( \
 		find \