/usr/src/v4l2loopback-0.10.0/Makefile is in v4l2loopback-dkms 0.10.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | KERNELRELEASE ?= `uname -r`
KERNEL_DIR ?= /lib/modules/$(KERNELRELEASE)/build
PWD := $(shell pwd)
obj-m := v4l2loopback.o
PREFIX ?= /usr/local
BINDIR = $(PREFIX)/bin
MANDIR = $(PREFIX)/share/man
MAN1DIR = $(MANDIR)/man1
INSTALL = install
INSTALL_PROGRAM = $(INSTALL) -p -m 755
INSTALL_DIR = $(INSTALL) -p -m 755 -d
INSTALL_DATA = $(INSTALL) -m 644
MODULE_OPTIONS = devices=2
##########################################
# note on build targets
#
# module-assistant makes some assumptions about targets, namely
# <modulename>: must be present and build the module <modulename>
# <modulename>.ko is not enough
# install: must be present (and should only install the module)
#
# we therefore make <modulename> a .PHONY alias to <modulename>.ko
# and remove utils-installation from 'install'
# call 'make install-all' if you want to install everything
##########################################
.PHONY: all install clean distclean
.PHONY: install-all install-utils install-man
.PHONY: modprobe v4l2loopback
# we don't control the .ko file dependencies, as it is done by kernel
# makefiles. therefore v4l2loopback.ko is a phony target actually
.PHONY: v4l2loopback.ko
all: v4l2loopback.ko
v4l2loopback: v4l2loopback.ko
v4l2loopback.ko:
@echo "Building v4l2-loopback driver..."
$(MAKE) -C $(KERNEL_DIR) M=$(PWD) modules
install-all: install install-utils install-man
install:
$(MAKE) -C $(KERNEL_DIR) M=$(PWD) modules_install
depmod -a $(KERNELRELEASE)
install-utils: utils/v4l2loopback-ctl
$(INSTALL_DIR) "$(DESTDIR)$(BINDIR)"
$(INSTALL_PROGRAM) $< "$(DESTDIR)$(BINDIR)"
install-man: man/v4l2loopback-ctl.1
$(INSTALL_DIR) "$(DESTDIR)$(MAN1DIR)"
$(INSTALL_DATA) $< "$(DESTDIR)$(MAN1DIR)"
clean:
rm -f *~
rm -f Module.symvers Module.markers modules.order
$(MAKE) -C $(KERNEL_DIR) M=$(PWD) clean
distclean: clean
rm -f man/v4l2loopback-ctl.1
modprobe: v4l2loopback.ko
chmod a+r v4l2loopback.ko
sudo modprobe videodev
-sudo rmmod v4l2loopback
sudo insmod ./v4l2loopback.ko $(MODULE_OPTIONS)
man/v4l2loopback-ctl.1: utils/v4l2loopback-ctl
help2man -N --name "control v4l2 loopback devices" $^ > $@
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