linux-kernel-driver-dev/kconfigmakefile.html at master · txrxlabs/linux-kernel-driver-dev · GitHub

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<html>
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<title>Modifying Kconfig and Makefile</title>
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<p align=center><font size=+5>Modifying Kconfig and Makefile</font>
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<a href="contents.html">Contents</a>
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<p>If you want to build your module within the kernel source tree,
you'll need to modify the appropriate Kconfig and makefile.  Suppose
for instance you want your driver to be added in drivers/char and
you want your driver to be called "demo":
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diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 72bedad..9337c5c 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -496,6 +496,11 @@ config NSC_GPIO
 	  pc8736x_gpio drivers.  If those drivers are built as
 	  modules, this one will be too, named nsc_gpio

+config DEMO_DRIVER
+	tristate "DEMO driver"
+	help
+	   The Demo driver does pretty much nothing.
+
 config RAW_DRIVER
 	tristate "RAW driver (/dev/raw/rawN)"
 	depends on BLOCK
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 7ff1d0d..c128a25 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -8,6 +8,7 @@ obj-y				+= misc.o
 obj-$(CONFIG_ATARI_DSP56K)	+= dsp56k.o
 obj-$(CONFIG_VIRTIO_CONSOLE)	+= virtio_console.o
 obj-$(CONFIG_RAW_DRIVER)	+= raw.o
+obj-$(CONFIG_DEMO_DRIVER)	+= demo.o
 obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o
 obj-$(CONFIG_MSM_SMD_PKT)	+= msm_smd_pkt.o
 obj-$(CONFIG_MSPEC)		+= mspec.o
</pre>
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