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add shell script for stale dependency hack

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It's rather awkward to debug issues with the dependency cleanup hacks
when implemented via make.  Add a cleanup shell script and move the
libomp hack there as an initial example.

Reviewed by:	brooks
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D24228
This commit is contained in:
Ed Maste 2020-03-30 20:20:15 +00:00
parent 86cfa7e70b
commit 4dad87a498
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=359461
2 changed files with 37 additions and 10 deletions
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11
Makefile.inc1
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@ -924,17 +924,8 @@ _sanity_check: .PHONY .MAKE
# replacing generated files. Handle these cases here in an ad-hoc fashion.
_cleanobj_fast_depend_hack: .PHONY
@echo ">>> Deleting stale dependencies...";
sh ${.CURDIR}/tools/build/depend-cleanup.sh ${OBJTOP}
# Date SVN Rev Syscalls/Changes
# 20200310 r358851 rename of openmp's ittnotify_static.c to .cpp
.for f in ittnotify_static
@if [ -e "${OBJTOP}/lib/libomp/.depend.${f}.pico" ] && \
egrep -qw '${f}\.c' ${OBJTOP}/lib/libomp/.depend.${f}.pico; then \
echo "Removing stale dependencies for ${f}"; \
rm -f ${OBJTOP}/lib/libomp/.depend.${f}.* \
${OBJTOP}/obj-lib32/lib/libomp/.depend.${f}.* \
${LIBCOMPAT:D${LIBCOMPAT_OBJTOP}/lib/libomp/.depend.${f}.*}; \
fi
.endfor
# Syscall stubs rewritten in C and obsolete MD assembly implementations
# 20191009 r353340 removal of opensolaris_atomic.S (also r353381)
.if ${MACHINE} != i386

36
tools/build/depend-cleanup.sh Executable file
View file

@ -0,0 +1,36 @@
#!/bin/sh
#
# $FreeBSD$
#
# Our current make(1)-based approach to dependency tracking cannot cope with
# certain source tree changes, including:
# - removing source files
# - replacing generated files with files committed to the tree
# - changing file extensions (e.g. a C source file rewritten in C++)
#
# We handle those cases here in an ad-hoc fashion by looking for the known-
# bad case in the main .depend file, and if found deleting all of the related
# .depend files (including for example the lib32 version).
OBJTOP=$1
if [ ! -d "$OBJTOP" ]; then
echo "usage: $(basename $0) objtop" >&2
exit 1
fi
# $1 directory
# $2 source filename w/o extension
# $3 source extension
clean_dep()
{
if [ -e "$OBJTOP"/$1/.depend.$2.pico ] && \
egrep -qw "$2\.$3" "$OBJTOP"/$1/.depend.$2.pico; then \
echo "Removing stale dependencies for $2.$3"; \
rm -f "$OBJTOP"/$1/.depend.$2.* \
"$OBJTOP"/obj-lib32/$1/.depend.$2.*
fi
}
# Date Rev Description
# 20200310 r358851 rename of openmp's ittnotify_static.c to .cpp
clean_dep lib/libomp ittnotify_static c