FreeBSD/Linux Kernel Cross Reference
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}
    
    # Ensure that the target gets updated if the capabilities file is modified,
    # even though it is not an explicit input to makesyscalls.lua.  For some
    # targets, like Linux system calls, this is unnecessary, but a spurious rebuild
    # is both rare and harmless.
    SRCS+=  ${CAPABILITIES_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}
    
    # We slap a .PHONY on makesyscalls.lua so that we regenerate every single time,
    # for now, which can be less painful across rebases or other things that may
    # have odd effects on mtimes.
    ${MAKESYSCALLS_SCRIPT}: .PHONY
    
    ${GENERATED}: ${MAKESYSCALLS_SCRIPT} ${SRCS}
            ${MAKESYSCALLS} ${SYSENT_FILE} ${SYSENT_CONF}

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