1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD$
3#
4# The include file <bsd.kmod.mk> handles building and installing loadable
5# kernel modules.
6#
7#
8# +++ variables +++
9#
10# CLEANFILES	Additional files to remove for the clean and cleandir targets.
11#
12# EXPORT_SYMS	A list of symbols that should be exported from the module,
13#		or the name of a file containing a list of symbols, or YES
14#		to export all symbols.  If not defined, no symbols are
15#		exported.
16#
17# KMOD		The name of the kernel module to build.
18#
19# KMODDIR	Base path for kernel modules (see kld(4)). [/boot/kernel]
20#
21# KMODOWN	Module file owner. [${BINOWN}]
22#
23# KMODGRP	Module file group. [${BINGRP}]
24#
25# KMODMODE	Module file mode. [${BINMODE}]
26#
27# KMODLOAD	Command to load a kernel module [/sbin/kldload]
28#
29# KMODUNLOAD	Command to unload a kernel module [/sbin/kldunload]
30#
31# MFILES	Optionally a list of interfaces used by the module.
32#		This file contains a default list of interfaces.
33#
34# PROG		The name of the kernel module to build.
35#		If not supplied, ${KMOD}.ko is used.
36#
37# SRCS		List of source files.
38#
39# FIRMWS	List of firmware images in format filename:shortname:version
40#
41# FIRMWARE_LICENSE
42#		Set to the name of the license the user has to agree on in
43#		order to use this firmware. See /usr/share/doc/legal
44#
45# DESTDIR	The tree where the module gets installed. [not set]
46#
47# +++ targets +++
48#
49# 	install:
50#               install the kernel module; if the Makefile
51#               does not itself define the target install, the targets
52#               beforeinstall and afterinstall may also be used to cause
53#               actions immediately before and after the install target
54#		is executed.
55#
56# 	load:
57#		Load a module.
58#
59# 	unload:
60#		Unload a module.
61#
62
63# backwards compat option for older systems.
64MACHINE_CPUARCH?=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/}
65
66AWK?=		awk
67KMODLOAD?=	/sbin/kldload
68KMODUNLOAD?=	/sbin/kldunload
69OBJCOPY?=	objcopy
70
71.if defined(KMODDEPS)
72.error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND"
73.endif
74
75.include <bsd.init.mk>
76.include <bsd.compiler.mk>
77
78.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
79
80# amd64 and mips use direct linking for kmod, all others use shared binaries
81.if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips
82__KLD_SHARED=yes
83.else
84__KLD_SHARED=no
85.endif
86
87.if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
88CFLAGS+=	-fno-strict-aliasing
89.endif
90WERROR?=	-Werror
91CFLAGS+=	${WERROR}
92CFLAGS+=	-D_KERNEL
93CFLAGS+=	-DKLD_MODULE
94
95# Don't use any standard or source-relative include directories.
96CSTD=		c99
97NOSTDINC=	-nostdinc
98CFLAGS:=	${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
99.if defined(KERNBUILDDIR)
100CFLAGS+=	-DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
101.endif
102
103# Add -I paths for system headers.  Individual module makefiles don't
104# need any -I paths for this.  Similar defaults for .PATH can't be
105# set because there are no standard paths for non-headers.
106CFLAGS+=	-I. -I@
107
108# Add -I path for altq headers as they are included via net/if_var.h
109# for example.
110CFLAGS+=	-I@/contrib/altq
111
112.if ${COMPILER_TYPE} != "clang"
113CFLAGS+=	-finline-limit=${INLINE_LIMIT}
114CFLAGS+= --param inline-unit-growth=100
115CFLAGS+= --param large-function-growth=1000
116.endif
117
118# Disallow common variables, and if we end up with commons from
119# somewhere unexpected, allocate storage for them in the module itself.
120CFLAGS+=	-fno-common
121LDFLAGS+=	-d -warn-common
122
123CFLAGS+=	${DEBUG_FLAGS}
124.if ${MACHINE_CPUARCH} == amd64
125CFLAGS+=	-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
126.endif
127
128.if ${MACHINE_CPUARCH} == powerpc
129CFLAGS+=	-mlongcall -fno-omit-frame-pointer
130.endif
131
132.if ${MACHINE_CPUARCH} == mips
133CFLAGS+=	-G0 -fno-pic -mno-abicalls -mlong-calls
134.endif
135
136.if defined(DEBUG) || defined(DEBUG_FLAGS)
137CTFFLAGS+=	-g
138.endif
139
140.if defined(FIRMWS)
141.if !exists(@)
142${KMOD:S/$/.c/}: @
143.else
144${KMOD:S/$/.c/}: @/tools/fw_stub.awk
145.endif
146	${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
147	    ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
148
149SRCS+=	${KMOD:S/$/.c/}
150CLEANFILES+=	${KMOD:S/$/.c/}
151
152.for _firmw in ${FIRMWS}
153${_firmw:C/\:.*$/.fwo/}:	${_firmw:C/\:.*$//}
154	@${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
155	@if [ -e ${_firmw:C/\:.*$//} ]; then			\
156		${LD} -b binary --no-warn-mismatch ${LDFLAGS}	\
157		    -r -d -o ${.TARGET}	${_firmw:C/\:.*$//};	\
158	else							\
159		ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
160		${LD} -b binary --no-warn-mismatch ${LDFLAGS}	\
161		    -r -d -o ${.TARGET}	${_firmw:C/\:.*$//};	\
162		rm ${_firmw:C/\:.*$//};				\
163	fi
164
165OBJS+=	${_firmw:C/\:.*$/.fwo/}
166.endfor
167.endif
168
169OBJS+=	${SRCS:N*.h:R:S/$/.o/g}
170
171.if !defined(PROG)
172PROG=	${KMOD}.ko
173.endif
174
175.if !defined(DEBUG_FLAGS)
176FULLPROG=	${PROG}
177.else
178FULLPROG=	${PROG}.debug
179${PROG}: ${FULLPROG} ${PROG}.symbols
180	${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\
181	    ${FULLPROG} ${.TARGET}
182${PROG}.symbols: ${FULLPROG}
183	${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
184.endif
185
186.if ${__KLD_SHARED} == yes
187${FULLPROG}: ${KMOD}.kld
188	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
189.if !defined(DEBUG_FLAGS)
190	${OBJCOPY} --strip-debug ${.TARGET}
191.endif
192.endif
193
194EXPORT_SYMS?=	NO
195.if ${EXPORT_SYMS} != YES
196CLEANFILES+=	export_syms
197.endif
198
199.if ${__KLD_SHARED} == yes
200${KMOD}.kld: ${OBJS}
201.else
202${FULLPROG}: ${OBJS}
203.endif
204	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
205.if defined(MK_CTF) && ${MK_CTF} != "no"
206	${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
207.endif
208.if defined(EXPORT_SYMS)
209.if ${EXPORT_SYMS} != YES
210.if ${EXPORT_SYMS} == NO
211	:> export_syms
212.elif !exists(${.CURDIR}/${EXPORT_SYMS})
213	echo ${EXPORT_SYMS} > export_syms
214.else
215	grep -v '^#' < ${EXPORT_SYMS} > export_syms
216.endif
217	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
218	    export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
219.endif
220.endif
221.if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no
222	${OBJCOPY} --strip-debug ${.TARGET}
223.endif
224
225_ILINKS=@ machine
226.if ${MACHINE} != ${MACHINE_CPUARCH}
227_ILINKS+=${MACHINE_CPUARCH}
228.endif
229.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
230_ILINKS+=x86
231.endif
232
233all: objwarn ${PROG}
234
235beforedepend: ${_ILINKS}
236
237# Ensure that the links exist without depending on it when it exists which
238# causes all the modules to be rebuilt when the directory pointed to changes.
239.for _link in ${_ILINKS}
240.if !exists(${.OBJDIR}/${_link})
241${OBJS}: ${.OBJDIR}/${_link}
242.endif
243.endfor
244
245# Search for kernel source tree in standard places.
246.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
247.if !defined(SYSDIR) && exists(${_dir}/kern/)
248SYSDIR=	${_dir}
249.endif
250.endfor
251.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
252.error "can't find kernel source tree"
253.endif
254
255.for _link in ${_ILINKS}
256.PHONY: ${_link}
257${_link}: ${.OBJDIR}/${_link}
258
259${.OBJDIR}/${_link}:
260	@case ${.TARGET:T} in \
261	machine) \
262		path=${SYSDIR}/${MACHINE}/include ;; \
263	@) \
264		path=${SYSDIR} ;; \
265	*) \
266		path=${SYSDIR}/${.TARGET:T}/include ;; \
267	esac ; \
268	path=`(cd $$path && /bin/pwd)` ; \
269	${ECHO} ${.TARGET:T} "->" $$path ; \
270	ln -sf $$path ${.TARGET:T}
271.endfor
272
273CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
274
275.if defined(DEBUG_FLAGS)
276CLEANFILES+= ${FULLPROG} ${PROG}.symbols
277.endif
278
279.if !target(install)
280
281_INSTALLFLAGS:=	${INSTALLFLAGS}
282.for ie in ${INSTALLFLAGS_EDIT}
283_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
284.endfor
285
286.if !target(realinstall)
287realinstall: _kmodinstall
288.ORDER: beforeinstall _kmodinstall
289_kmodinstall:
290	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
291	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
292.if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
293	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
294	    ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR}
295.endif
296
297.include <bsd.links.mk>
298
299.if !defined(NO_XREF)
300afterinstall: _kldxref
301.ORDER: realinstall _kldxref
302.ORDER: _installlinks _kldxref
303_kldxref:
304	@if type kldxref >/dev/null 2>&1; then \
305		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
306		kldxref ${DESTDIR}${KMODDIR}; \
307	fi
308.endif
309.endif # !target(realinstall)
310
311.endif # !target(install)
312
313.if !target(load)
314load: ${PROG}
315	${KMODLOAD} -v ${.OBJDIR}/${PROG}
316.endif
317
318.if !target(unload)
319unload:
320	${KMODUNLOAD} -v ${PROG}
321.endif
322
323.if defined(KERNBUILDDIR)
324.PATH: ${KERNBUILDDIR}
325CFLAGS+=	-I${KERNBUILDDIR}
326.for _src in ${SRCS:Mopt_*.h}
327CLEANFILES+=	${_src}
328.if !target(${_src})
329${_src}:
330	ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET}
331.endif
332.endfor
333.else
334.for _src in ${SRCS:Mopt_*.h}
335CLEANFILES+=	${_src}
336.if !target(${_src})
337${_src}:
338	:> ${.TARGET}
339.endif
340.endfor
341.endif
342
343# Respect configuration-specific C flags.
344CFLAGS+=	${CONF_CFLAGS}
345
346MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \
347	dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \
348	dev/fb/fb_if.m dev/gpio/gpio_if.m dev/gpio/gpiobus_if.m \
349	dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \
350	dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \
351	dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \
352	dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
353	dev/pci/pcib_if.m dev/ppbus/ppbus_if.m \
354	dev/sdhci/sdhci_if.m dev/smbus/smbus_if.m dev/spibus/spibus_if.m \
355	dev/sound/pci/hda/hdac_if.m \
356	dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
357	dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \
358	dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \
359	dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \
360	kern/bus_if.m kern/clock_if.m \
361	kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \
362	libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \
363	pc98/pc98/canbus_if.m dev/etherswitch/mdio_if.m
364
365.for _srcsrc in ${MFILES}
366.for _ext in c h
367.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
368CLEANFILES+=	${_src}
369.if !target(${_src})
370.if !exists(@)
371${_src}: @
372.else
373${_src}: @/tools/makeobjops.awk @/${_srcsrc}
374.endif
375	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
376.endif
377.endfor # _src
378.endfor # _ext
379.endfor # _srcsrc
380
381.if !empty(SRCS:Mvnode_if.c)
382CLEANFILES+=	vnode_if.c
383.if !exists(@)
384vnode_if.c: @
385.else
386vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src
387.endif
388	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c
389.endif
390
391.if !empty(SRCS:Mvnode_if.h)
392CLEANFILES+=	vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
393.if !exists(@)
394vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @
395.else
396vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \
397    @/kern/vnode_if.src
398.endif
399vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
400	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h
401vnode_if_newproto.h:
402	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p
403vnode_if_typedef.h:
404	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q
405.endif
406
407.for _i in mii pccard
408.if !empty(SRCS:M${_i}devs.h)
409CLEANFILES+=	${_i}devs.h
410.if !exists(@)
411${_i}devs.h: @
412.else
413${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
414.endif
415	${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
416.endif
417.endfor # _i
418
419.if !empty(SRCS:Musbdevs.h)
420CLEANFILES+=	usbdevs.h
421.if !exists(@)
422usbdevs.h: @
423.else
424usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
425.endif
426	${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h
427.endif
428
429.if !empty(SRCS:Musbdevs_data.h)
430CLEANFILES+=	usbdevs_data.h
431.if !exists(@)
432usbdevs_data.h: @
433.else
434usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
435.endif
436	${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d
437.endif
438
439.if !empty(SRCS:Macpi_quirks.h)
440CLEANFILES+=	acpi_quirks.h
441.if !exists(@)
442acpi_quirks.h: @
443.else
444acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
445.endif
446	${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
447.endif
448
449.if !empty(SRCS:Massym.s)
450CLEANFILES+=	assym.s genassym.o
451assym.s: genassym.o
452.if defined(KERNBUILDDIR)
453genassym.o: opt_global.h
454.endif
455.if !exists(@)
456assym.s: @
457.else
458assym.s: @/kern/genassym.sh
459.endif
460	sh @/kern/genassym.sh genassym.o > ${.TARGET}
461.if exists(@)
462genassym.o: @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
463.endif
464genassym.o: @ machine ${SRCS:Mopt_*.h}
465	${CC} -c ${CFLAGS:N-fno-common} \
466	    @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
467.endif
468
469lint: ${SRCS}
470	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
471
472.if defined(KERNBUILDDIR)
473${OBJS}: opt_global.h
474.endif
475
476.include <bsd.dep.mk>
477
478cleandepend: cleanilinks
479# .depend needs include links so we remove them only together.
480cleanilinks:
481	rm -f ${_ILINKS}
482
483.if !exists(${.OBJDIR}/${DEPENDFILE})
484${OBJS}: ${SRCS:M*.h}
485.endif
486
487.include <bsd.obj.mk>
488.include "kern.mk"
489