Makefile.toolchain.zephyr: fix C++ on Xtensa
Need to set CXXFLAGS just like we did CFLAGS.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
diff --git a/scripts/Makefile.toolchain.zephyr b/scripts/Makefile.toolchain.zephyr
index db0f59a..f59bc07 100644
--- a/scripts/Makefile.toolchain.zephyr
+++ b/scripts/Makefile.toolchain.zephyr
@@ -101,7 +101,9 @@
CROSS_COMPILE_xtensa=$(TOOLCHAIN_HOME)/usr/bin/$(CROSS_COMPILE_TARGET_xtensa)/$(CROSS_COMPILE_TARGET_xtensa)-
ifeq ($(ARCH),xtensa)
SYSROOT := ${ZEPHYR_SDK_INSTALL_DIR}/sysroots/${SYSROOT_TARGET_${ARCH}}
-CFLAGS += --sysroot=$(SYSROOT) -I=/usr/include -I=/usr/include/arch/include
+common_xtensa_flags := --sysroot=$(SYSROOT) -I=/usr/include -I=/usr/include/arch/include
+CFLAGS += $(common_xtensa_flags)
+CXXFLAGS += $(common_xtensa_flags)
endif
TOOLCHAIN_LIBS_xtensa = hal
