[PATCH 09/21] kbuild: populate non-host CXX variables

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

To be able to link statically against libfuzzer, we will need to use the
C++ compiler as linker. Prepare for that by populating CXX variables.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 6f8e1a312060..df0770e832e1 100644
--- a/Makefile
+++ b/Makefile
@@ -421,6 +421,7 @@ ENVCC		:= $(CC)
 CPP		= $(CC) -E
 ifneq ($(LLVM),)
 CC		= $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
+CXX		= $(LLVM_PREFIX)clang++$(LLVM_SUFFIX)
 LD		= $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX)
 AR		= $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX)
 NM		= $(LLVM_PREFIX)llvm-nm$(LLVM_SUFFIX)
@@ -430,6 +431,7 @@ READELF		= $(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX)
 STRIP		= $(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX)
 else
 CC		= $(CROSS_COMPILE)gcc
+CXX		= $(CROSS_COMPILE)g++
 LD		= $(CROSS_COMPILE)ld
 AR		= $(CROSS_COMPILE)ar
 NM		= $(CROSS_COMPILE)nm
@@ -514,7 +516,7 @@ LDFLAGS_barebox += $(LDFLAGS_common)
 LDFLAGS_pbl += $(LDFLAGS_common)
 LDFLAGS_elf += $(LDFLAGS_common) --nmagic -s
 
-export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
+export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC CXX
 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL PYTHON3 UTS_MACHINE
 export LEX YACC
 export HOSTCXX CHECK CHECKFLAGS MKIMAGE
-- 
2.39.5