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Kir Kolyshkin 5502b5b568 Makefile.install: cure LIBDIR guessing logic 
Commit 6a51c7e ("make: Allow to install in custom dirs") replaced
all := assignments with ?=, effectively disabling the LIBDIR guessing
logic (as once a variable is assigned, further ?= make no sense).

That commit description says that setting PREFIX from make command line
didn't work. I can't find the original bug report but according to
GNU make documentation (see [1], [2]) as well as to my best knowledge,
any variable set in Makefile can be overridden from the command line,
unless "override VAR = value" is used in the Makefile.

The result of this patch is LIBDIR is correctly set for distros such as
Fedora and Debian, so "make install" works more correct. Surely, any
variable can still be overriden from the command line.

I have also checked the build of Fedora package from criu.spec with this
change -- it works fine.

Now, I am not sure why it was not working for the original bug reporter.
The only hypothesis I have is he tried to do something like

	PREFIX=/usr make

instead of

	make PREFIX=/usr

If this was the case, it was not a bug but wrong usage.

While at it, fix LIBDIR description in INSTALL.md.

[1] https://www.gnu.org/software/make/manual/html_node/Overriding.html
[2] https://www.gnu.org/software/make/manual/html_node/Override-Directive.html

travis-ci: success for Makefile.install fixes
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
2017-02-06 13:48:49 +03:00
contrib scripts/install-debian-packages: add libnet-dev 2017-01-16 11:04:49 +03:00
coredump coredump: Rename dir to coredump 2016-06-28 13:04:58 +03:00
crit crit/decode: set default opts['nopl'] to False 2016-05-30 13:47:54 +03:00
criu headers: Move lock.h into include/common/ 2017-02-06 13:48:47 +03:00
Documentation crtools: close a signal descriptor after passing a preparation stage 2017-02-03 16:55:07 +03:00
images protobuf: regenerate images on Makefile changes 2017-02-03 18:04:23 +03:00
include/common common: lock -- Sync function proto with syscalls 2017-02-06 13:48:49 +03:00
lib py: Fix resp.errno access 2016-12-21 11:23:02 +03:00
scripts Drop prefix from own memcpy/memset/memcmp 2017-02-06 13:29:54 +03:00
soccr soccr: add one more test to check libsoccr_save/libsoccr_restore 2017-02-01 18:41:29 +03:00
test test: check exit codes for criu page-server 2017-02-03 18:04:17 +03:00
.gitignore soccr: Generate config.h dynamically 2017-01-16 11:03:42 +03:00
.mailmap repo: Add mailmap file 2012-03-25 23:31:20 +04:00
.travis.yml travis: enable arm/arm64/ppc builds with clang 2016-12-05 11:49:19 +03:00
COPYING COPYING: fix a typo in a preamble 2016-08-11 16:18:43 +03:00
CREDITS Add the CREDITS file 2012-07-30 13:52:37 +04:00
INSTALL.md Makefile.install: cure LIBDIR guessing logic 2017-02-06 13:48:49 +03:00
Makefile build: only generate soccr config.h if necessary 2017-01-16 11:03:42 +03:00
Makefile.config make: Add .config file processing (v3) 2016-11-03 20:49:13 +03:00
Makefile.install Makefile.install: cure LIBDIR guessing logic 2017-02-06 13:48:49 +03:00
Makefile.versions criu: Version 2.10 2017-01-16 12:06:01 +03:00
README.md Add ascciinema tour on basic criu features. 2016-06-16 16:37:06 +03:00

README.md

CRIU (Checkpoint and Restore in Userspace)

An utility to checkpoint/restore tasks. Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at. The distinctive feature of the CRIU project is that it is mainly implemented in user space.

The project home is at http://criu.org.

Pages worth starting with are:

A video tour on basic CRIU features

CRIU introduction

How to contribute