pkg-kernel-module: die if kernel module support is disabled

Test the configuration of the kernel to see if loadable module support
is enabled, and error out otherwise. This makes build failures of
external kernel modules less confusing.

[Thomas: tweak the commit log.]

Signed-off-by: Noé Rubinstein <nrubinstein@aldebaran.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/package/pkg-kernel-module.mk b/package/pkg-kernel-module.mk
index 5fb19be8080300ff8b20e87af30a14e25c3f05de..6fb7704e3221bbc47685e96f1d8304d47bab4f9f 100644 (file)
--- a/package/pkg-kernel-module.mk
+++ b/package/pkg-kernel-module.mk
@@ -60,6 +60,10 @@ $(2)_MODULE_SUBDIRS ?= .
 # includes and other support files (Booo!)
 define $(2)_KERNEL_MODULES_BUILD
        @$$(call MESSAGE,"Building kernel module(s)")
+       @if ! grep -Fqx 'CONFIG_MODULES=y' $(LINUX_DIR)/.config; then \
+               echo "ERROR: Kernel does not support loadable modules"; \
+               exit 1; \
+       fi
        $$(foreach d,$$($(2)_MODULE_SUBDIRS), \
                $$(LINUX_MAKE_ENV) $$($$(PKG)_MAKE) \
                        -C $$(LINUX_DIR) \