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[src/trunk]: src/tools/gcc add something to auto-detect when GCC has changed ...



details:   https://anonhg.NetBSD.org/src/rev/f001a892de53
branches:  trunk
changeset: 1004630:f001a892de53
user:      mrg <mrg%NetBSD.org@localhost>
date:      Wed Nov 06 07:26:31 2019 +0000

description:
add something to auto-detect when GCC has changed from gcc to gcc.old
or back and auto-cleandir tools/gcc.

based upon the code for PREVIOUSTOOLDIR in tools/Makefile.

diffstat:

 tools/gcc/Makefile |  23 ++++++++++++++++++++++-
 1 files changed, 22 insertions(+), 1 deletions(-)

diffs (37 lines):

diff -r 5640aa0dcc01 -r f001a892de53 tools/gcc/Makefile
--- a/tools/gcc/Makefile        Wed Nov 06 06:57:22 2019 +0000
+++ b/tools/gcc/Makefile        Wed Nov 06 07:26:31 2019 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile,v 1.96 2019/10/24 03:19:14 christos Exp $
+#      $NetBSD: Makefile,v 1.97 2019/11/06 07:26:31 mrg Exp $
 
 .include <bsd.hostinit.mk>
 
@@ -254,6 +254,27 @@
        true
        @touch $@
 
+.if !defined(PREV_GCC)
+.  if exists(PREV_GCC)
+PREV_GCC!=     cat PREV_GCC
+.  else
+PREV_GCC=
+.  endif
+.endif
+
+CLEANFILES+=   PREV_GCC
+
+realall realdepend: .MAKE
+.if !empty(PREV_GCC) && "${PREV_GCC}" != "${EXTERNAL_GCC_SUBDIR}-${HAVE_GCC}"
+       @echo "*** WARNING: GCC has changed version?"
+       @echo "*** PREV_GCC '${PREV_GCC}'"
+       @echo "***     !=  EXTERNAL_GCC_SUBDIR-HAVE_GCC '${EXTERNAL_GCC_SUBDIR}-${HAVE_GCC}'"
+       @echo "*** Cleaning mis-matched tools/gcc"
+       rm -f PREV_GCC
+       (cd ${.CURDIR} && ${MAKE} cleandir)
+.endif
+       echo ${EXTERNAL_GCC_SUBDIR}-${HAVE_GCC} >PREV_GCC
+
 clean: clean.native
 clean.native:
        -rm -r -f .native



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