make.conf is literally the config file for the make command. So... when in doubt about how to use variables just check
make(1). The general syntax is
variable=value so that's what I'd use.
I already checked that file thrice.
Usually, variable=value or variable = value works for me, but if I want to concatenate things I use variable += value.
In addition, but now I'm threading on somewhat vague territory for me:
make.conf(5). It seems WITHOUT_MODULES (being a string) can utilize a list. So you wouldn't need to specify one module at a time; just list 'm together.
I tried WITHOUT_MODULES="if_axge ng_bluetooth ...", and make tells me it cannot find ng_bluetooth.
I remember to have seen something like WITHOUT_MODULES="module1 module2 moduleX" yesterday.
Modules are dynamically loaded loaded through the kld interface. To exclude them from the kernel copy GENERIC for your architecture, i.e. for amd64 it is /usr/src/sys/amd64/conf/GENERIC, to another file and remove the drivers.
This is the easiest understood method. The preferred approach would be to make your own kernel config file, include GENERIC (include statement), and use nodevice statements. I'd recommend the first, simpler, approach.
Here is the output of my kernel config file:
Code:
#
# MINPERF -- Minimal performant custom kernel configuration file for FreeBSD/amd64
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#
cpu HAMMER
ident MINPERF
makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support
options SCHED_ULE # ULE scheduler
options NUMA # Non-Uniform Memory Architecture support
options PREEMPTION # Enable kernel thread preemption
options VIMAGE # Subsystem virtualization, e.g. VNET
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5
options ROUTE_MPATH # Multipath routing support
options FIB_ALGO # Modular fib lookups
options TCP_OFFLOAD # TCP offload
options TCP_BLACKBOX # Enhanced TCP event logging
options TCP_HHOOK # hhook(9) framework for TCP
options TCP_RFC7413 # TCP Fast Open
options SCTP_SUPPORT # Allow kldload of SCTP
options KERN_TLS # TLS transmit & receive offload
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_ACL # Support for access control lists
options UFS_DIRHASH # Improve performance on big directories
options UFS_GJOURNAL # Enable gjournal-based UFS journaling
options QUOTA # Enable disk quotas for UFS
options MD_ROOT # MD is a potential root device
options PROCFS # Process filesystem (requires PSEUDOFS)
options PSEUDOFS # Pseudo-filesystem framework
options TMPFS # Efficient memory filesystem
options GEOM_RAID # Soft RAID functionality.
options GEOM_LABEL # Provides labelization
options EFIRT # EFI Runtime Services support
options COMPAT_FREEBSD32 # Compatible with i386 binaries
#options COMPAT_FREEBSD4 # Compatible with FreeBSD4
#options COMPAT_FREEBSD5 # Compatible with FreeBSD5
#options COMPAT_FREEBSD6 # Compatible with FreeBSD6
#options COMPAT_FREEBSD7 # Compatible with FreeBSD7
#options COMPAT_FREEBSD9 # Compatible with FreeBSD9
#options COMPAT_FREEBSD10 # Compatible with FreeBSD10
#options COMPAT_FREEBSD11 # Compatible with FreeBSD11
#options COMPAT_FREEBSD12 # Compatible with FreeBSD12
options COMPAT_FREEBSD13 # Compatible with FreeBSD13
options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
options KTRACE # ktrace(1) support
options STACK # stack(9) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options AUDIT # Security event auditing
options CAPABILITY_MODE # Capsicum capability mode
options CAPABILITIES # Capsicum capabilities
options MAC # TrustedBSD MAC Framework
options KDTRACE_FRAME # Ensure frames are compiled in
options KDTRACE_HOOKS # Kernel DTrace hooks
options DDB_CTF # Kernel ELF linker loads CTF data
options INCLUDE_CONFIG_FILE # Include this file in kernel
options RACCT # Resource accounting framework
options RACCT_DEFAULT_TO_DISABLED # Set kern.racct.enable=0 by default
options RCTL # Resource limits
# Debugging support. Always need this:
options KDB # Enable kernel debugger support.
options KDB_TRACE # Print a stack trace for a panic.
# Kernel Sanitizers
#options COVERAGE # Generic kernel coverage. Used by KCOV
#options KCOV # Kernel Coverage Sanitizer
# Warning: KUBSAN can result in a kernel too large for loader to load
#options KUBSAN # Kernel Undefined Behavior Sanitizer
#options KCSAN # Kernel Concurrency Sanitizer
# Kernel dump features.
options EKCD # Support for encrypted kernel dumps
options GZIO # gzip-compressed kernel and user dumps
options ZSTDIO # zstd-compressed kernel and user dumps
options DEBUGNET # debugnet networking
options NETDUMP # netdump(4) client support
options NETGDB # netgdb(4) client support
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
# CPU frequency control
device cpufreq
# Bus support.
device acpi
device smbios
options IOMMU
device pci
options PCI_HP # PCI-Express native HotPlug
options PCI_IOV # PCI SR-IOV support
options COMPAT_LINUXKPI
# Enable support for the kernel PLL to use an external PPS signal,
# under supervision of [x]ntpd(8)
# More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
options PPS_SYNC
# ATA controllers
device ahci # AHCI-compatible SATA controllers
# ATA/SCSI peripherals
device scbus # SCSI bus (required for ATA/SCSI)
device da # Direct Access (disks)
# NVM Express (NVMe) support
device nvme # base NVMe driver
device nvd # expose NVMe namespaces as disks, depends on nvme
device kbdmux # keyboard multiplexer
# syscons is the legacy console driver, resembling an SCO console
device vga # VGA video card driver
device splash # Splash screen and screen saver support
device sc
options SC_PIXEL_MODE # add support for the raster text mode
# vt is the default video console driver
device vt
device vt_vga
device vt_efifb
device vt_vbefb
# Pseudo devices.
device crypto # core crypto support
device aesni # AES-NI OpenCrypto module
device loop # Network loopback
device padlock_rng # VIA Padlock RNG
device rdrand_rng # Intel Bull Mountain RNG
device ether # Ethernet support
device vlan # 802.1Q VLAN support
device tuntap # Packet tunnel.
device md # Memory "disks"
device gif # IPv6 and IPv4 tunneling
device firmware # firmware assist module
device xz # lzma decompression
# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device bpf # Berkeley packet filter
# USB support
options USB_DEBUG # enable debug msgs
device uhci # UHCI PCI->USB interface
device ohci # OHCI PCI->USB interface
device ehci # EHCI PCI->USB interface (USB 2.0)
device xhci # XHCI PCI->USB interface (USB 3.0)
device usb # USB Bus (required)
device usbhid # USB HID Transport
device hkbd # HID Keyboard
device ukbd # USB Keyboard
device umass # Disks/Mass storage - Requires scbus and da
# Sound support
device sound # Generic sound driver (required)
device snd_hda # Intel High Definition Audio
# VirtIO support
device virtio # Generic VirtIO bus (required)
device virtio_pci # VirtIO PCI device
device vtnet # VirtIO Ethernet device
device virtio_blk # VirtIO Block device
device virtio_scsi # VirtIO SCSI device
device virtio_balloon # VirtIO Memory Balloon device
# Linux KVM paravirtualization support
device kvm_clock # KVM paravirtual clock driver
# HyperV drivers and enhancement support
device hyperv # HyperV drivers
# Xen HVM Guest Optimizations
# NOTE: XENHVM depends on xenpci and xentimer.
# They must be added or removed together.
options XENHVM # Xen HVM kernel infrastructure
device xenefi # Xen EFI timer device
device xenpci # Xen HVM Hypervisor services driver
device xentimer # Xen x86 PV timer device
# Netmap provides direct access to TX/RX rings on supported NICs
device netmap # netmap(4) support
# evdev interface
options EVDEV_SUPPORT # evdev support in legacy drivers
device evdev # input event device support
device uinput # install /dev/uinput cdev
# HID support
options HID_DEBUG # enable debug msgs
device hid # Generic HID support
device hidbus # Generic HID Bus
options IICHID_SAMPLING # Workaround missing GPIO INTR support
nodevice axge
In case of axge I searched for its module name in
/usr/src/sys/modules but did not find it.
EDIT:
I tried setting
if_axge="NO" in
/boot/loader.conf, but no luck at all.
Maybe it gets loaded, because my ethernet USB adapter has two settings.
The first involves axge as driver.
The second involves cdce as driver. (my current setting set through a devd config file).
Regarding WiFi, and bluetooth I thought disabling them through the BIOS, but I don't have such options there.
It is not that these options are harmful to me, but seeing a polluted boot process due to wifi messages although not having any wifi software installed, or autoloading axge where only cdce is needed is somehow strange.
