Use target kernel dir when building with DKMS

Previously DKMS would fail on kernel upgrades since uname -r would still return the running kernel version. DKMS gives us a "kernel_source_dir" so we use that to build the module.

Makefile

@@ -1,8 +1,10 @@
 obj-m += gcadapter_oc.o
 ccflags-y := -std=gnu99
+KERNEL_SOURCE_DIR := /lib/modules/$(shell uname -r)/build
 
 all:
-	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
+	make -C $(KERNEL_SOURCE_DIR) M=$(PWD) modules
 
 clean:
-	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
+	make -C $(KERNEL_SOURCE_DIR) M=$(PWD) clean
+

gcadapter_oc.c

@@ -9,7 +9,7 @@
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Hannes Mann");
 MODULE_DESCRIPTION("Filter kernel module to set the polling rate of the Wii U/Mayflash GameCube Adapter to a custom value.");
-MODULE_VERSION("1.3");
+MODULE_VERSION("1.4");
 
 static struct usb_device* adapter_device = NULL;
 

packaging/arch/PKGBUILD

@@ -2,17 +2,17 @@
 # Contributor: Hannes Mann <[email protected]>
 
 pkgname=gcadapter-oc-dkms
-pkgver=1.3
+pkgver=1.4
 pkgrel=1
 pkgdesc="Kernel module for overclocking the Nintendo Wii U/Mayflash GameCube adapter."
 arch=('any')
 url="https://github.com/HannesMann/gcadapter-oc-kmod"
 license=('GPL2')
 depends=('dkms')
-source=('https://github.com/HannesMann/gcadapter-oc-kmod/archive/v1.3.tar.gz'
+source=('https://github.com/HannesMann/gcadapter-oc-kmod/archive/v1.4.tar.gz'
         'dkms.conf')
 md5sums=('SKIP'
-         '75ae8140a90cb150cb3f56cf816d440c')
+         'aad917366718c6335b1dc6f2e921a539')
 
 prepare() {
   echo "gcadapter_oc" > gcadapter-oc.conf

packaging/arch/dkms.conf

@@ -1,7 +1,7 @@
 PACKAGE_NAME="gcadapter_oc"
 PACKAGE_VERSION="@PKGVER@"
-MAKE[0]="make"
-CLEAN="make clean"
+MAKE[0]="make KERNEL_SOURCE_DIR=$kernel_source_dir"
+CLEAN="make KERNEL_SOURCE_DIR=$kernel_source_dir clean"
 BUILT_MODULE_NAME[0]="gcadapter_oc"
 DEST_MODULE_LOCATION[0]="/extramodules"
 AUTOINSTALL="yes"