Convert affinity control from the deprecated PLPA to HWLOC

hwloc-1.2.1/Makefile.in

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+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) ctags-recursive \
+	install-am install-strip tags-recursive
+
+.PHONY: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) CTAGS GTAGS \
+	all all-am check check-am clean clean-generic clean-libtool \
+	ctags ctags-recursive distclean distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-recursive \
+	uninstall uninstall-am
+
+
+#
+# Build the top-level README file
+#
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:

hwloc-1.2.1/NEWS

+Copyright © 2009 CNRS
+Copyright © 2009-2011 INRIA.  All rights reserved.
+Copyright © 2009-2011 Université Bordeaux 1
+Copyright © 2009-2011 Cisco Systems, Inc.  All rights reserved.
+
+$COPYRIGHT$
+
+Additional copyrights may follow
+
+$HEADER$
+
+===========================================================================
+
+This file contains the main features as well as overviews of specific
+bug fixes (and other actions) for each version of hwloc since version
+0.9 (as initially released as "libtopology", then re-branded to "hwloc"
+in v0.9.1).
+
+
+Version 1.2.1
+-------------
+* Improve support of AMD Bulldozer "Compute-Unit" modules by detecting
+  logical processors with different core IDs on Linux.
+* Fix hwloc-ps crash when listing processes from another Linux cpuset.
+  Thanks to Carl Smith for reporting the problem.
+* Fix build on AIX and Solaris. Thanks to Carl Smith and Andreas Kupries
+  for reporting the problems.
+* Fix cache size detection on Darwin. Thanks to Erkcan Özcan for reporting
+  the problem.
+* Make configure fail if --enable-xml or --enable-cairo is given and
+  proper support cannot be found. Thanks to Andreas Kupries for reporting
+  the XML problem.
+* Fix spurious L1 cache detection on AIX. Thanks to Hendryk Bockelmann
+  for reporting the problem.
+* Fix hwloc_get_last_cpu_location(THREAD) on Linux. Thanks to Gabriele
+  Fatigati for reporting the problem.
+* Fix object distance detection on Solaris.
+* Add pthread_self weak symbol to ease static linking.
+* Minor documentation fixes.
+
+
+Version 1.2.0
+-------------
+* Major features
+  + Expose latency matrices in the API as an array of distance structures
+    within objects. Add several helpers to find distances.
+  + Add hwloc_topology_set_distance_matrix() and environment variables
+    to provide a matrix of distances between a given set of objects.
+  + Add hwloc_get_last_cpu_location() and hwloc_get_proc_last_cpu_location()
+    to retrieve the processors where a process or thread recently ran.
+    - Add the corresponding --get-last-cpu-location option to hwloc-bind.
+  + Add hwloc_topology_restrict() to restrict an existing topology to a
+    given cpuset.
+    - Add the corresponding --restrict option to lstopo.
+* Minor API updates
+  + Add hwloc_bitmap_list_sscanf/snprintf/asprintf to convert between bitmaps
+    and strings such as 4-5,7-9,12,15-
+  + hwloc_bitmap_set/clr_range() now support infinite ranges.
+  + Clarify the difference between inserting Misc objects by cpuset or by
+    parent.
+  + hwloc_insert_misc_object_by_cpuset() now returns NULL in case of error.
+* Discovery improvements
+  + x86 backend (for freebsd): add x2APIC support
+  + Support standard device-tree phandle, to get better support on e.g. ARM
+    systems providing it.
+  + Detect cache size on AIX. Thanks Christopher and IBM.
+  + Improve grouping to support asymmetric topologies.
+* Tools
+  + Command-line tools now support "all" and "root" special locations
+    consisting in the entire topology, as well as type names with depth
+    attributes such as L2 or Group4.
+  + hwloc-calc improvements:
+    - Add --number-of/-N option to report the number of objects of a given
+      type or depth.
+    - -I is now equivalent to --intersect for listing the indexes of
+      objects of a given type or depth that intersects the input.
+    - Add -H to report the output as a hierarchical combination of types
+      and depths.
+  + Add --thissystem to lstopo.
+  + Add lstopo-win, a console-less lstopo variant on Windows.
+* Miscellaneous
+  + Remove C99 usage from code base.
+  + Rename hwloc-gather-topology.sh into hwloc-gather-topology
+  + Fix AMD cache discovery on freebsd when there is no L3 cache, thanks
+    Andriy Gapon for the fix.
+
+
+Version 1.1.2
+-------------
+* Fix a segfault in the distance-based grouping code when some objects
+  are not placed in any group. Thanks to Bernd Kallies for reporting
+  the problem and providing a patch.
+* Fix the command-line parsing of hwloc-bind --mempolicy interleave.
+  Thanks to Guy Streeter for reporting the problem.
+* Stop truncating the output in hwloc_obj_attr_snprintf() and in the
+  corresponding lstopo output. Thanks to Guy Streeter for reporting the
+  problem.
+* Fix object levels ordering in synthetic topologies.
+* Fix potential incoherency between device tree and kernel information,
+  when SMT is disabled on Power machines.
+* Fix and document the behavior of hwloc_topology_set_synthetic() in case
+  of invalid argument. Thanks to Guy Streeter for reporting the problem.
+* Add some verbose error message reporting when it looks like the OS
+  gives erroneous information.
+* Do not include unistd.h and stdint.h in public headers on Windows.
+* Move config.h files into their own subdirectories to avoid name
+  conflicts when AC_CONFIG_HEADERS adds -I's for them.
+* Remove the use of declaring variables inside "for" loops.
+* Some other minor fixes.
+* Many minor documentation fixes.
+
+
+Version 1.1.1
+-------------
+* Add hwloc_get_api_version() which returns the version of hwloc used
+  at runtime. Thanks to Guy Streeter for the suggestion.
+* Fix the number of hugepages reported for NUMA nodes on Linux.
+* Fix hwloc_bitmap_to_ulong() right after allocating the bitmap.
+  Thanks to Bernd Kallies for reporting the problem.
+* Fix hwloc_bitmap_from_ith_ulong() to properly zero the first ulong.
+  Thanks to Guy Streeter for reporting the problem.
+* Fix hwloc_get_membind_nodeset() on Linux.
+  Thanks to Bernd Kallies for reporting the problem and providing a patch.
+* Fix some file descriptor leaks in the Linux discovery.
+* Fix the minimum width of NUMA nodes, caches and the legend in the graphical
+  lstopo output. Thanks to Jirka Hladky for reporting the problem.
+* Various fixes to bitmap conversion from/to taskset-strings.
+* Fix and document snprintf functions behavior when the buffer size is too
+  small or zero. Thanks to Guy Streeter for reporting the problem.
+* Fix configure to avoid spurious enabling of the cpuid backend.
+  Thanks to Tim Anderson for reporting the problem.
+* Cleanup error management in hwloc-gather-topology.sh.
+  Thanks to Jirka Hladky for reporting the problem and providing a patch.
+* Add a manpage and usage for hwloc-gather-topology.sh on Linux.
+  Thanks to Jirka Hladky for providing a patch.
+* Memory binding documentation enhancements.
+
+
+Version 1.1.0
+-------------
+
+* API
+  + Increase HWLOC_API_VERSION to 0x00010100 so that API changes may be
+    detected at build-time.
+  + Add a memory binding interface.
+  + The cpuset API (hwloc/cpuset.h) is now deprecated. It is replaced by
+    the bitmap API (hwloc/bitmap.h) which offers the same features with more
+    generic names since it applies to CPU sets, node sets and more.
+    Backward compatibility with the cpuset API and ABI is still provided but
+    it will be removed in a future release.
+    Old types (hwloc_cpuset_t, ...) are still available as a way to clarify
+    what kind of hwloc_bitmap_t each API function manipulates.
+    Upgrading to the new API only requires to replace hwloc_cpuset_ function
+    calls with the corresponding hwloc_bitmap_ calls, with the following
+    renaming exceptions:
+    - hwloc_cpuset_cpu -> hwloc_bitmap_only
+    - hwloc_cpuset_all_but_cpu -> hwloc_bitmap_allbut
+    - hwloc_cpuset_from_string -> hwloc_bitmap_sscanf
+  + Add an `infos' array in each object to store couples of info names and
+    values. It enables generic storage of things like the old dmi board infos
+    that were previously stored in machine specific attributes.
+  + Add linesize cache attribute.
+* Features
+  + Bitmaps (and thus CPU sets and node sets) are dynamically (re-)allocated,
+    the maximal number of CPUs (HWLOC_NBMAXCPUS) has been removed.
+  + Improve the distance-based grouping code to better support irregular
+    distance matrices.
+  + Add support for device-tree to get cache information (useful on Power
+    architectures).
+* Helpers
+  + Add NVIDIA CUDA helpers in cuda.h and cudart.h to ease interoperability
+    with CUDA Runtime and Driver APIs.
+  + Add Myrinet Express helper in myriexpress.h to ease interoperability.
+* Tools
+  + lstopo now displays physical/OS indexes by default in graphical mode
+    (use -l to switch back to logical indexes). The textual output still uses
+    logical by default (use -p to switch to physical indexes).
+  + lstopo prefixes logical indexes with `L#' and physical indexes with `P#'.
+    Physical indexes are also printed as `P#N' instead of `phys=N' within
+    object attributes (in parentheses).
+  + Add a legend at the bottom of the lstopo graphical output, use --no-legend
+    to remove it.
+  + Add hwloc-ps to list process' bindings.
+  + Add --membind and --mempolicy options to hwloc-bind.
+  + Improve tools command-line options by adding a generic --input option
+    (and more) which replaces the old --xml, --synthetic and --fsys-root.
+  + Cleanup lstopo output configuration by adding --output-format.
+  + Add --intersect in hwloc-calc, and replace --objects with --largest.
+  + Add the ability to work on standard input in hwloc-calc.
+  + Add --from, --to and --at in hwloc-distrib.
+  + Add taskset-specific functions and command-line tools options to
+    manipulate CPU set strings in the format of the taskset program.
+  + Install hwloc-gather-topology.sh on Linux.
+
+
+Version 1.0.3
+-------------
+
+* Fix support for Linux cpuset when emulated by a cgroup mount point.
+* Remove unneeded runtime dependency on libibverbs.so in the library and
+  all utils programs.
+* Fix hwloc_cpuset_to_linux_libnuma_ulongs in case of non-linear OS-indexes
+  for NUMA nodes.
+* lstopo now displays physical/OS indexes by default in graphical mode
+  (use -l to switch back to logical indexes). The textual output still uses
+  logical by default (use -p to switch to physical indexes).
+
+
+Version 1.0.2
+-------------
+
+* Public headers can now be included directly from C++ programs.
+* Solaris fix for non-contiguous cpu numbers.  Thanks to Rolf vandeVaart for
+  reporting the issue.
+* Darwin 10.4 fix.  Thanks to Olivier Cessenat for reporting the issue.
+* Revert 1.0.1 patch that ignored sockets with unknown ID values since it
+  only slightly helped POWER7 machines with old Linux kernels while it
+  prevents recent kernels from getting the complete POWER7 topology.
+* Fix hwloc_get_common_ancestor_obj().
+* Remove arch-specific bits in public headers.
+* Some fixes in the lstopo graphical output.
+* Various man page clarifications and minor updates.
+
+
+Version 1.0.1
+-------------
+
+* Various Solaris fixes.  Thanks to Yannick Martin for reporting the issue.
+* Fix "non-native" builds on x86 platforms (e.g., when building 32
+  bit executables with compilers that natively build 64 bit).
+* Ignore sockets with unknown ID values (which fixes issues on POWER7
+  machines).  Thanks to Greg Bauer for reporting the issue.
+* Various man page clarifications and minor updates.
+* Fixed memory leaks in hwloc_setup_group_from_min_distance_clique().
+* Fix cache type filtering on MS Windows 7.  Thanks to Αλέξανδρος
+  Παπαδογιαννάκ for reporting the issue.
+* Fixed warnings when compiling with -DNDEBUG.
+
+
+Version 1.0.0
+-------------
+
+* The ABI of the library has changed.
+* Backend updates
+  + Add FreeBSD support.
+  + Add x86 cpuid based backend.
+  + Add Linux cgroup support to the Linux cpuset code.
+  + Support binding of entire multithreaded process on Linux.
+  + Fix and enable Group support in Windows.
+  + Cleanup XML export/import.
+* Objects
+  + HWLOC_OBJ_PROC is renamed into HWLOC_OBJ_PU for "Processing Unit",
+    its stringified type name is now "PU".
+  + Use new HWLOC_OBJ_GROUP objects instead of MISC when grouping
+    objects according to NUMA distances or arbitrary OS aggregation.
+  + Rework memory attributes.
+  + Add different cpusets in each object to specify processors that
+    are offline, unavailable, ...
+  + Cleanup the storage of object names and DMI infos.
+* Features
+  + Add support for looking up specific PID topology information.
+  + Add hwloc_topology_export_xml() to export the topology in a XML file.
+  + Add hwloc_topology_get_support() to retrieve the supported features
+    for the current topology context.
+  + Support non-SYSTEM object as the root of the tree, use MACHINE in
+    most common cases.
+  + Add hwloc_get_*cpubind() routines to retrieve the current binding
+    of processes and threads.
+* API
+  + Add HWLOC_API_VERSION to help detect the currently used API version.
+  + Add missing ending "e" to *compare* functions.
+  + Add several routines to emulate PLPA functions.
+  + Rename and rework the cpuset and/or/xor/not/clear operators to output
+    their result in a dedicated argument instead of modifying one input.
+  + Deprecate hwloc_obj_snprintf() in favor of hwloc_obj_type/attr_snprintf().
+  + Clarify the use of parent and ancestor in the API, do not use father.
+  + Replace hwloc_get_system_obj() with hwloc_get_root_obj().
+  + Return -1 instead of HWLOC_OBJ_TYPE_MAX in the API since the latter
+    isn't public.
+  + Relax constraints in hwloc_obj_type_of_string().
+  + Improve displaying of memory sizes.
+  + Add 0x prefix to cpuset strings.
+* Tools
+  + lstopo now displays logical indexes by default, use --physical to
+    revert back to OS/physical indexes.
+  + Add colors in the lstopo graphical outputs to distinguish between online,
+    offline, reserved, ... objects.
+  + Extend lstopo to show cpusets, filter objects by type, ...
+  + Renamed hwloc-mask into hwloc-calc which supports many new options.
+* Documentation
+  + Add a hwloc(7) manpage containing general information.
+  + Add documentation about how to switch from PLPA to hwloc.
+  + Cleanup the distributed documentation files.
+* Miscellaneous
+  + Many compilers warning fixes.
+  + Cleanup the ABI by using the visibility attribute.
+  + Add project embedding support.
+
+
+Version 0.9.4 (unreleased)
+--------------------------
+
+* Fix reseting colors to normal in lstopo -.txt output.
+* Fix Linux pthread_t binding error report.
+
+
+Version 0.9.3
+-------------
+
+* Fix autogen.sh to work with Autoconf 2.63.
+* Fix various crashes in particular conditions:
+  - xml files with root attributes
+  - offline CPUs
+  - partial sysfs support
+  - unparseable /proc/cpuinfo
+  - ignoring NUMA level while Misc level have been generated
+* Tweak documentation a bit
+* Do not require the pthread library for binding the current thread on Linux
+* Do not erroneously consider the sched_setaffinity prototype is the old version
+  when there is actually none.
+* Fix _syscall3 compilation on archs for which we do not have the
+  sched_setaffinity system call number.
+* Fix AIX binding.
+* Fix libraries dependencies: now only lstopo depends on libtermcap, fix
+  binutils-gold link
+* Have make check always build and run hwloc-hello.c
+* Do not limit size of a cpuset.
+
+
+Version 0.9.2
+-------------
+
+* Trivial documentation changes.
+
+
+Version 0.9.1
+-------------
+
+* Re-branded to "hwloc" and moved to the Open MPI project, relicensed under the
+  BSD license.
+* The prefix of all functions and tools is now hwloc, and some public
+  functions were also renamed for real.
+* Group NUMA nodes into Misc objects according to their physical distance
+  that may be reported by the OS/BIOS.
+  May be ignored by setting HWLOC_IGNORE_DISTANCES=1 in the environment.
+* Ignore offline CPUs on Solaris.
+* Improved binding support on AIX.
+* Add HP-UX support.
+* CPU sets are now allocated/freed dynamically.
+* Add command line options to tune the lstopo graphical output, add
+  semi-graphical textual output
+* Extend topobind to support multiple cpusets or objects on the command
+  line as topomask does.
+* Add an Infiniband-specific helper hwloc/openfabrics-verbs.h to retrieve
+  the physical location of IB devices.
+
+
+Version 0.9 (libtopology)
+-------------------------
+
+* First release.

plpa-1.3.2/VERSION → hwloc-1.2.1/VERSION

-# This is the VERSION file for PLPA, describing the precise version of
-# PLPA in this distribution.  The various components of the version
+# This is the VERSION file for hwloc, describing the precise version
+# of hwloc in this distribution.  The various components of the version
 # number below are combined to form a single version number string.
 
 # major, minor, and release are generally combined in the form
 # <major>.<minor>.<release>.  If release is zero, then it is omitted.
 
 major=1
-minor=3
-release=2
+minor=2
+release=1
 
 # greek is used for alpha or beta release tags.  If it is non-empty,
 # it will be appended to the version number.  It does not have to be
@@ -18,35 +18,44 @@ release=2
 
 greek=
 
-# If want_svn=1, then the SVN r number will be included in the overall
-# PLPA version number in some form.
+# If want_repo_rev=1, then the SVN r number will be included in the overall
+# hwloc version number in some form.
 
-want_svn=0
+want_repo_rev=0
 
-# If svn_r=-1, then the SVN r numbere will be obtained dynamically at
-# run time, either 1) via the "svnversion" command (if this is a
-# Subversion checkout) in the form "r<svn_r>", or b) with the date (if
-# this is not a Subversion checkout, and the svnversion command cannot
-# be used) in the form of "svn<date>".  Alternatively, if svn_r is not
-# -1, the value of svn_r will be directly appended to the version
-# string.  This happens during "make dist", for example: if the
-# distribution tarball is being made from an SVN checkout, the value
-# of svn_r in this file is replaced with the output of "svnversion".
+# If repo_rev=-1, then the repository version number will be obtained
+# dynamically at run time, either: 
+#
+# 1) via the "svnversion" command (if this is a Subversion checkout)
+#    in the form "r<svn_r>", or 
+# 2) via the "hg -v -R tip" command (if this is a Mercurial clone)
+#    in the form of "hg<hash>", using the hash tag at the tip
+# 3) via the "git log -1" command (if this is a Git clone) in the form
+#    of "git<hash>", using the hash tag at the HEAD
+# 4) with the date (if none of the above work) in the form of
+#    "date<date>".
+#
+# Alternatively, if repo_rev is not -1, the value of repo_rev_r will
+# be directly appended to the version string.  This happens during
+# "make dist", for example: if the distribution tarball is being made
+# from an SVN checkout, if repo_rev=-1, then its value is replaced
+# with the output of "svnversion".
 
-svn_r=r264
+repo_rev=r3619
 
-# The shared library version of PLPA's public library.  This version
+# The date when this release was created
+
+date="Aug 16, 2011"
+
+# The shared library version of hwloc's public library.  This version
 # is maintained in accordance with the "Library Interface Versions"
-# chapter from the GNU Libtool documentation.  PLPA v<=1.3 reported
-# version 0:0:0; the next release after v1.3 will explicitly set its
-# .so version numbers according to the rules in the Libtool
-# documentation.  Notes:
+# chapter from the GNU Libtool documentation.  Notes:
 
 # 1. Since version numbers are associated with *releases*, the version
-# number maintained on the PLPA SVN trunk (and developer branches) is
+# number maintained on the hwloc SVN trunk (and developer branches) is
 # always 0:0:0.
 
 # 2. Version numbers are described in the Libtool current:revision:age
 # format.
 
-libplpa_so_version=0:1:0
+libhwloc_so_version=3:1:3

hwloc-1.2.1/config/compile

+#! /bin/sh
+# Wrapper for compilers which do not understand `-c -o'.
+
+scriptversion=2009-10-06.20; # UTC
+
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2009  Free Software
+# Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+case $1 in
+  '')
+     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand `-c -o'.
+Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file `INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+esac
+
+ofile=
+cfile=
+eat=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as `compile cc -o foo foo.c'.
+	# So we strip `-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no `-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # `.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use `[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End: