freebsd-dev/sys/conf/sysent.mk

# $FreeBSD$

# Don't use an OBJDIR
.OBJDIR: ${.CURDIR}

.include <bsd.sysdir.mk>
.include <src.lua.mk>

COMMON_GENERATED=	proto.h		\
			syscall.h	\
			syscalls.c	\
			sysent.c	\
			systrace_args.c

GENERATED_PREFIX?=
GENERATED?=	${COMMON_GENERATED:S/^/${GENERATED_PREFIX}/}
SYSENT_FILE?=	syscalls.master
SYSENT_CONF?=	syscalls.conf

# Including Makefile should override SYSENT_FILE and SYSENT_CONF as needed,
# and set GENERATED.
SRCS+=	${SYSENT_FILE}
SRCS+=	${SYSENT_CONF}

MAKESYSCALLS_INTERP?=	${LUA}
MAKESYSCALLS_SCRIPT?=	${SYSDIR}/tools/makesyscalls.lua
MAKESYSCALLS=	${MAKESYSCALLS_INTERP} ${MAKESYSCALLS_SCRIPT}

all:
	@echo "make sysent only"

# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
# potentially once for each ${GENERATED} file.
.ORDER: ${GENERATED}
sysent: ${GENERATED}

${GENERATED}: ${MAKESYSCALLS_SCRIPT} ${SRCS}
	${MAKESYSCALLS} ${SYSENT_FILE} ${SYSENT_CONF}
sysent targets: further cleanup and deduplication r355473 vastly improved the readability and cleanliness of these Makefiles. Every single one of them follows the same pattern and duplicates the exact same logic. Now that we have GENERATED/SRCS, split SRCS up into the two parameters we'll use for ${MAKESYSCALLS} rather than assuming a specific ordering of SRCS and include a common sysent.mk to handle the rest. This makes it less tedious to make sweeping changes. Some default values are provided for GENERATED/SYSENT_*; almost all of these just use a 'syscalls.master' and 'syscalls.conf' in cwd, and they all use effectively the same filenames with an arbitrary prefix. Most ABIs will be able to get away with just setting GENERATED_PREFIX and including ^/sys/conf/sysent.mk, while others only need light additions. kern/Makefile is the notable exception, as it doesn't take a SYSENT_CONF and the generated files are spread out between ^/sys/kern and ^/sys/sys, but it otherwise fits the pattern enough to use the common version. Reviewed by: brooks, imp Nice!: emaste Differential Revision: https://reviews.freebsd.org/D23197 2020-01-18 20:37:45 +00:00			`# $FreeBSD$`

			`# Don't use an OBJDIR`
			`.OBJDIR: ${.CURDIR}`

			`.include <bsd.sysdir.mk>`
			`.include <src.lua.mk>`

			`COMMON_GENERATED= proto.h \`
			`syscall.h \`
			`syscalls.c \`
			`sysent.c \`
			`systrace_args.c`

			`GENERATED_PREFIX?=`
			`GENERATED?= ${COMMON_GENERATED:S/^/${GENERATED_PREFIX}/}`
			`SYSENT_FILE?= syscalls.master`
			`SYSENT_CONF?= syscalls.conf`

			`# Including Makefile should override SYSENT_FILE and SYSENT_CONF as needed,`
			`# and set GENERATED.`
			`SRCS+= ${SYSENT_FILE}`
			`SRCS+= ${SYSENT_CONF}`
sysent.mk: split interpreter out of target command The main objective here is to make it easy to identify what needs to change in order to use a different sysent generator than the current Lua-based one, which may be used to MFC some of the changes that have happened so we can avoid parallel accidents in stable branches, for instance. As a secondary objective, it's now feasible to override the generator on a per-Makefile basis if needed, so that one could refactor their Makefile to use this while pinning generation to the legacy makesyscalls.sh. I don't anticipate any consistent need for such a thing, but it's low-effort to achieve. 2020-01-21 05:01:11 +00:00
			`MAKESYSCALLS_INTERP?= ${LUA}`
			`MAKESYSCALLS_SCRIPT?= ${SYSDIR}/tools/makesyscalls.lua`
			`MAKESYSCALLS= ${MAKESYSCALLS_INTERP} ${MAKESYSCALLS_SCRIPT}`
sysent targets: further cleanup and deduplication r355473 vastly improved the readability and cleanliness of these Makefiles. Every single one of them follows the same pattern and duplicates the exact same logic. Now that we have GENERATED/SRCS, split SRCS up into the two parameters we'll use for ${MAKESYSCALLS} rather than assuming a specific ordering of SRCS and include a common sysent.mk to handle the rest. This makes it less tedious to make sweeping changes. Some default values are provided for GENERATED/SYSENT_*; almost all of these just use a 'syscalls.master' and 'syscalls.conf' in cwd, and they all use effectively the same filenames with an arbitrary prefix. Most ABIs will be able to get away with just setting GENERATED_PREFIX and including ^/sys/conf/sysent.mk, while others only need light additions. kern/Makefile is the notable exception, as it doesn't take a SYSENT_CONF and the generated files are spread out between ^/sys/kern and ^/sys/sys, but it otherwise fits the pattern enough to use the common version. Reviewed by: brooks, imp Nice!: emaste Differential Revision: https://reviews.freebsd.org/D23197 2020-01-18 20:37:45 +00:00
			`all:`
			`@echo "make sysent only"`

			`# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than`
			`# potentially once for each ${GENERATED} file.`
			`.ORDER: ${GENERATED}`
			`sysent: ${GENERATED}`

sysent.mk: split interpreter out of target command The main objective here is to make it easy to identify what needs to change in order to use a different sysent generator than the current Lua-based one, which may be used to MFC some of the changes that have happened so we can avoid parallel accidents in stable branches, for instance. As a secondary objective, it's now feasible to override the generator on a per-Makefile basis if needed, so that one could refactor their Makefile to use this while pinning generation to the legacy makesyscalls.sh. I don't anticipate any consistent need for such a thing, but it's low-effort to achieve. 2020-01-21 05:01:11 +00:00			`${GENERATED}: ${MAKESYSCALLS_SCRIPT} ${SRCS}`
			`${MAKESYSCALLS} ${SYSENT_FILE} ${SYSENT_CONF}`