package/cmake: disable ccache for host-cmake

The upcoming ccache update will depend on host-cmake, so we must
ensure host-cmake doesn't use ccache when being built.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/cmake/cmake.mk

@@ -40,9 +40,16 @@ CMAKE_CONF_OPTS = \
 HOST_CMAKE_CFLAGS = $(shell echo $(HOST_CFLAGS) | sed -r "s%$(HOST_CPPFLAGS)%%")
 HOST_CMAKE_CXXFLAGS = $(shell echo $(HOST_CXXFLAGS) | sed -r "s%$(HOST_CPPFLAGS)%%")
 
+# We may be a ccache dependency, so we can't use ccache
+HOST_CMAKE_CONFIGURE_OPTS = \
+	$(HOST_CONFIGURE_OPTS) \
+	CC="$(HOSTCC_NOCCACHE)" \
+	GCC="$(HOSTCC_NOCCACHE)" \
+	CXX="$(HOSTCXX_NOCCACHE)"
+
 define HOST_CMAKE_CONFIGURE_CMDS
 	(cd $(@D); \
-		$(HOST_CONFIGURE_OPTS) \
+		$(HOST_CMAKE_CONFIGURE_OPTS) \
 		CFLAGS="$(HOST_CMAKE_CFLAGS)" \
 		./bootstrap --prefix=$(HOST_DIR) \
 			--parallel=$(PARALLEL_JOBS) -- \