aabafca098
.PATH to ${.CURDIR}/[...]/kern , the "exists" expression will fail for the
form exists(${.CURDIR}/[...]/kern/). This appears to be happening because
make is searching for the argument to "exists" by using .PATH rather than a
relative search, because .PATH and the argument match at the beginning.
Additionally, make appears to consider a path that starts with ${.CURDIR}
as relative, even though it expands to an absolute path.
The reason that most people aren't seeing this problem is that the absolute
paths of /usr/src/sys and /sys are also searched, so as long as the kernel
source can be found in at least one of those places, no problems surface.
This problem was inadvertently introduced on 1 December 2000, with the
addition of the sysvipc modules.
302 lines
7.1 KiB
Makefile
302 lines
7.1 KiB
Makefile
# From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91
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# $FreeBSD$
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#
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# The include file <bsd.kmod.mk> handles installing Kernel Loadable Device
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# drivers (KLD's).
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#
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#
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# +++ variables +++
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#
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# CLEANFILES Additional files to remove for the clean and cleandir targets.
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#
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# DISTRIBUTION Name of distribution. [bin]
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#
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# KMOD The name of the kernel module to build.
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#
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# KMODDIR Base path for kernel modules (see kld(4)). [/boot/kernel]
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#
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# KMODOWN KLD owner. [${BINOWN}]
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#
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# KMODGRP KLD group. [${BINGRP}]
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#
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# KMODMODE KLD mode. [${BINMODE}]
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#
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# LINKS The list of KLD links; should be full pathnames, the
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# linked-to file coming first, followed by the linked
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# file. The files are hard-linked. For example, to link
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# /modules/master and /modules/meister, use:
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#
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# LINKS= /modules/master /modules/meister
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#
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# KMODLOAD Command to load a kernel module [/sbin/kldload]
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#
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# KMODUNLOAD Command to unload a kernel module [/sbin/kldunload]
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#
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# NOMAN KLD does not have a manual page if set.
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#
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# PROG The name of the kernel module to build.
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# If not supplied, ${KMOD}.o is used.
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#
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# SRCS List of source files
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#
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# SUBDIR A list of subdirectories that should be built as well.
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# Each of the targets will execute the same target in the
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# subdirectories.
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#
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# SYMLINKS Same as LINKS, except it creates symlinks and the
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# linked-to pathname may be relative.
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#
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# DESTDIR, DISTDIR are set by other Makefiles (e.g. bsd.own.mk)
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#
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# MFILES Optionally a list of interfaces used by the module.
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# This file contains a default list of interfaces.
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#
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# +++ targets +++
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#
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# distribute:
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# This is a variant of install, which will
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# put the stuff into the right "distribution".
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#
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# install:
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# install the program and its manual pages; if the Makefile
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# does not itself define the target install, the targets
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# beforeinstall and afterinstall may also be used to cause
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# actions immediately before and after the install target
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# is executed.
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#
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# load:
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# Load KLD.
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#
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# unload:
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# Unload KLD.
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#
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# bsd.obj.mk: clean, cleandir and obj
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# bsd.dep.mk: cleandepend, depend and tags
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# bsd.man.mk: maninstall
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#
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KMODLOAD?= /sbin/kldload
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KMODUNLOAD?= /sbin/kldunload
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.if !target(__initialized__)
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__initialized__:
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.if exists(${.CURDIR}/../Makefile.inc)
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.include "${.CURDIR}/../Makefile.inc"
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.endif
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.endif
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.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
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CFLAGS+= ${COPTS} -D_KERNEL ${CWARNFLAGS}
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CFLAGS+= -DKLD_MODULE
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# Don't use any standard or source-relative include directories.
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# Since -nostdinc will annull any previous -I paths, we repeat all
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# such paths after -nostdinc. It doesn't seem to be possible to
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# add to the front of `make' variable.
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_ICFLAGS:= ${CFLAGS:M-I*}
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CFLAGS+= -nostdinc -I- ${INCLMAGIC} ${_ICFLAGS}
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# Add -I paths for system headers. Individual KLD makefiles don't
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# need any -I paths for this. Similar defaults for .PATH can't be
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# set because there are no standard paths for non-headers.
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CFLAGS+= -I. -I@
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# Add a -I path to standard headers like <stddef.h>. Use a relative
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# path to src/include if possible. If the @ symlink hasn't been built
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# yet, then we can't tell if the relative path exists. Add both the
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# potential relative path and an absolute path in that case.
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.if exists(@)
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.if exists(@/../include)
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CFLAGS+= -I@/../include
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.else
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CFLAGS+= -I${DESTDIR}/usr/include
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.endif
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.else # !@
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CFLAGS+= -I@/../include -I${DESTDIR}/usr/include
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.endif # @
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CFLAGS+= ${DEBUG_FLAGS}
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.if ${OBJFORMAT} == elf
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CLEANFILES+= setdef0.c setdef1.c setdefs.h
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CLEANFILES+= setdef0.o setdef1.o
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.endif
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OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
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.if !defined(PROG)
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PROG= ${KMOD}.ko
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.endif
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${PROG}: ${KMOD}.kld
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.if ${OBJFORMAT} == elf
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gensetdefs ${KMOD}.kld
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${CC} ${CFLAGS} -c setdef0.c
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${CC} ${CFLAGS} -c setdef1.c
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${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} setdef0.o ${KMOD}.kld setdef1.o
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.else
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${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
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.endif
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${KMOD}.kld: ${OBJS}
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${LD} ${LDFLAGS} -r -o ${.TARGET} ${OBJS}
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.if !defined(NOMAN)
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.include <bsd.man.mk>
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.if !defined(_MANPAGES) || empty(_MANPAGES)
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MAN1= ${KMOD}.4
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.endif
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.elif !target(maninstall)
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maninstall: _SUBDIR
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all-man:
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.endif
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_ILINKS=@ machine
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.MAIN: all
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all: objwarn ${PROG} all-man _SUBDIR
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beforedepend ${OBJS}: ${_ILINKS}
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# Search for kernel source tree in standard places.
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.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
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.if !defined(SYSDIR) && exists(${_dir}/kern/)
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SYSDIR= ${_dir}
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.endif
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.endfor
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.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
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.error "can't find kernel source tree"
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.endif
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${_ILINKS}:
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@case ${.TARGET} in \
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machine) \
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path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
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@) \
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path=${SYSDIR} ;; \
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esac ; \
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path=`(cd $$path && /bin/pwd)` ; \
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${ECHO} ${.TARGET} "->" $$path ; \
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ln -s $$path ${.TARGET}
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CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
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.if !target(install)
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.if !target(beforeinstall)
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beforeinstall:
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.endif
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.if !target(afterinstall)
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afterinstall:
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.endif
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_INSTALLFLAGS:= ${INSTALLFLAGS}
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.for ie in ${INSTALLFLAGS_EDIT}
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_INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
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.endfor
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realinstall: _SUBDIR
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${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
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${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
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.if defined(LINKS) && !empty(LINKS)
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@set ${LINKS}; \
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while test $$# -ge 2; do \
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l=${DESTDIR}$$1; \
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shift; \
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t=${DESTDIR}$$1; \
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shift; \
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${ECHO} $$t -\> $$l; \
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ln -f $$l $$t; \
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done; true
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.endif
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.if defined(SYMLINKS) && !empty(SYMLINKS)
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@set ${SYMLINKS}; \
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while test $$# -ge 2; do \
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l=$$1; \
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shift; \
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t=${DESTDIR}$$1; \
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shift; \
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${ECHO} $$t -\> $$l; \
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ln -fs $$l $$t; \
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done; true
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.endif
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install: afterinstall _SUBDIR
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.if !defined(NOMAN)
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afterinstall: realinstall maninstall
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.else
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afterinstall: realinstall
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.endif
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realinstall: beforeinstall
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.endif
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DISTRIBUTION?= bin
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.if !target(distribute)
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distribute: _SUBDIR
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.for dist in ${DISTRIBUTION}
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cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
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.endfor
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.endif
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.if !target(load)
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load: ${PROG}
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${KMODLOAD} -v ./${KMOD}.ko
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.endif
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.if !target(unload)
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unload:
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${KMODUNLOAD} -v ${KMOD}
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.endif
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.for _src in ${SRCS:Mopt_*.h}
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CLEANFILES+= ${_src}
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.if !target(${_src})
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${_src}:
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touch ${.TARGET}
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.endif
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.endfor
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MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
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dev/iicbus/iicbus_if.m isa/isa_if.m dev/mii/miibus_if.m \
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dev/pccard/card_if.m dev/pccard/power_if.m pci/pci_if.m pci/pcib_if.m \
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dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m dev/usb/usb_if.m
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.for _srcsrc in ${MFILES}
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.for _ext in c h
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.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
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CLEANFILES+= ${_src}
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.if !target(${_src})
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${_src}: @
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.if exists(@)
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${_src}: @/kern/makeobjops.pl @/${_srcsrc}
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.endif
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perl @/kern/makeobjops.pl -${_ext} @/${_srcsrc}
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.endif
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.endfor # _src
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.endfor # _ext
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.endfor # _srcsrc
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.for _ext in c h
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.if ${SRCS:Mvnode_if.${_ext}} != ""
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CLEANFILES+= vnode_if.${_ext}
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vnode_if.${_ext}: @
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.if exists(@)
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vnode_if.${_ext}: @/kern/vnode_if.pl @/kern/vnode_if.src
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.endif
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perl @/kern/vnode_if.pl -${_ext} @/kern/vnode_if.src
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.endif
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.endfor
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regress:
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.include <bsd.dep.mk>
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.if !exists(${DEPENDFILE})
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${OBJS}: ${SRCS:M*.h}
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.endif
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.include <bsd.obj.mk>
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.include <bsd.kern.mk>
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