[src/trunk]: src/share/mk create mkdep output with a temporary file so that f...

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/983fc26233e8
branches:  trunk
changeset: 791015:983fc26233e8
user:      mrg <mrg%NetBSD.org@localhost>
date:      Thu Oct 31 01:55:03 2013 +0000

description:
create mkdep output with a temporary file so that failures in
complation during .d creation don't leave an empty (stale) .d
file around to break future builds.

(hmm, probably could use .PRECIOUS here.)

diffstat:

 share/mk/bsd.dep.mk |  24 ++++++++++++++----------
 1 files changed, 14 insertions(+), 10 deletions(-)

diffs (60 lines):

diff -r 0cb945cef727 -r 983fc26233e8 share/mk/bsd.dep.mk
--- a/share/mk/bsd.dep.mk       Thu Oct 31 00:59:17 2013 +0000
+++ b/share/mk/bsd.dep.mk       Thu Oct 31 01:55:03 2013 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.dep.mk,v 1.78 2013/10/28 01:47:13 mrg Exp $
+#      $NetBSD: bsd.dep.mk,v 1.79 2013/10/31 01:55:03 mrg Exp $
 
 ##### Basic targets
 realdepend:    beforedepend .depend afterdepend
@@ -60,37 +60,41 @@
 
 .c.d:
        ${_MKTARGET_CREATE}
-       ${MKDEP} -f ${.TARGET} ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
+       ${MKDEP} -f ${.TARGET}.tmp ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
            ${CFLAGS:C/-([IDU])[  ]*/-\1/Wg:M-[IDU]*} \
            ${CPPFLAGS} ${COPTS.${.IMPSRC:T}} ${CPUFLAGS.${.IMPSRC:T}} \
-           ${CPPFLAGS.${.IMPSRC:T}} ${.IMPSRC}
+           ${CPPFLAGS.${.IMPSRC:T}} ${.IMPSRC} && \
+           mv ${.TARGET}.tmp ${.TARGET}
 
 .m.d:
        ${_MKTARGET_CREATE}
-       ${MKDEP} -f ${.TARGET} ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
+       ${MKDEP} -f ${.TARGET}.tmp ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
            ${OBJCFLAGS:C/-([IDU])[  ]*/-\1/Wg:M-[IDU]*} \
            ${CPPFLAGS} ${COPTS.${.IMPSRC:T}} ${CPUFLAGS.${.IMPSRC:T}} \
-           ${CPPFLAGS.${.IMPSRC:T}} ${.IMPSRC}
+           ${CPPFLAGS.${.IMPSRC:T}} ${.IMPSRC} && \
+           mv ${.TARGET}.tmp ${.TARGET}
 
 .s.d .S.d:
        ${_MKTARGET_CREATE}
-       ${MKDEP} -f ${.TARGET} ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
+       ${MKDEP} -f ${.TARGET}.tmp ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
            ${AFLAGS:C/-([IDU])[  ]*/-\1/Wg:M-[IDU]*} \
            ${CPPFLAGS} ${AFLAGS.${.IMPSRC:T}} ${CPPFLAGS.${.IMPSRC:T}} \
-           ${__acpp_flags} ${.IMPSRC}
+           ${__acpp_flags} ${.IMPSRC} && \
+           mv ${.TARGET}.tmp ${.TARGET}
 
 .C.d .cc.d .cpp.d .cxx.d:
        ${_MKTARGET_CREATE}
-       ${MKDEPCXX} -f ${.TARGET} ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
+       ${MKDEPCXX} -f ${.TARGET}.tmp ${_MKDEP_FILEFLAGS} -- ${MKDEPFLAGS} \
            ${CXXFLAGS:C/-([IDU])[  ]*/-\1/Wg:M-[IDU]*} \
            ${CPPFLAGS} ${COPTS.${.IMPSRC:T}} ${CPUFLAGS.${.IMPSRC:T}} \
-           ${CPPFLAGS.${.IMPSRC:T}} ${.IMPSRC}
+           ${CPPFLAGS.${.IMPSRC:T}} ${.IMPSRC} && \
+           mv ${.TARGET}.tmp ${.TARGET}
 
 .endif # defined(SRCS) && !empty(SRCS)                                 # }
 
 ##### Clean rules
 .if defined(SRCS) && !empty(SRCS)
-CLEANDIRFILES+= .depend ${__DPSRCS.d} ${.CURDIR}/tags ${CLEANDEPEND}
+CLEANDIRFILES+= .depend ${__DPSRCS.d} ${__DPSRCS.d:.d=.d.tmp} ${.CURDIR}/tags ${CLEANDEPEND}
 .endif
 
 ##### Custom rules