build: pass HOSTCXX to host builds as CXX

Fixes cmake build on some systems that also have an older clang++

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/include/host-build.mk b/include/host-build.mk
index 9120570c54b4a54b5d5695c1c667553e955ca93d..a2a31ae0489b46b94961de78ad0c5a100588d921 100644 (file)
--- a/include/host-build.mk
+++ b/include/host-build.mk
@@ -52,6 +52,7 @@ endef
 HOST_CONFIGURE_VARS = \
        CC="$(HOSTCC)" \
        CFLAGS="$(HOST_CFLAGS)" \
+       CXX="$(HOSTCXX)" \
        CPPFLAGS="$(HOST_CPPFLAGS)" \
        LDFLAGS="$(HOST_LDFLAGS)" \
        CONFIG_SHELL="$(SHELL)"