[Crash-utility] compiling statically?

Thu Aug 25 17:41:37 UTC 2016

----- Original Message -----
> On Thu, 2016-08-25 at 09:45 -0700, J Freyensee wrote:
> > On Wed, 2016-08-24 at 20:30 -0400, Dave Anderson wrote:
> > > 
> > > > 
> > > > 
> > > > > 
> > > > > 
> > > > > On Wed, 2016-08-24 at 15:00 -0400, Dave Anderson wrote:
> > > > 
> > > > That's not a problem -- crash just needs to be compiled with
> > > > "make
> > > > lzo",
> > > > which will add these lines to the CFLAGS.extra and LDFLAGS.extra
> > > > files:
> > > > 
> > > >   -DLZO     in the CFLAGS.extra file
> > > >   -llzo2    in the LDFLAGS.extra file
> > > > 
> > > > and will delete diskdump.o.  The subsequent rebuild will
> > > > recompile
> > > > diskdump.c with lzo compression support.  You only have to enter
> > > > "make lzo" once, as it's effect is sticky.
> > 
> > Thanks, this helped.
> > 
> > > 
> > > > 
> > > > 
> > > > This also requires the lzo, lzo-minilzo and lzo-devel packages to
> > > > be installed so that the lzo compression library can get compiled
> > > > in.
> > > > But in your case, you would need to have the static versions of
> > > > the
> > > > lzo and lzo-minilzo packages.
> > > 
> > > Although -- unlike the zlib package which has a zlib-static rpm --
> > > the
> > > Red Hat lzo package set does not include static versions of the lzo
> > > and
> > > lzo-minilzo libraries.  So I don't know how you can get around
> > > that.
> > > 
> > 
> > I got around the liblzo2.a issue by just building from the sources:
> > 
> > mkdir lzo2_temp
> > cd lzo2_temp/
> > yumdownloader --source lzo-devel
> > pm2cpio lzo-2.08-8.fc24.src.rpm | cpio -idv
> > tar xf lzo-2.08.tar.gz
> > cd lzo-2.08/
> > run ./configure if need-be
> > make liblzo2.a
> > 
> > Looks like all I need is liblzo2.a.  Seems like a simple thing for
> > the
> > .rpm package to include since it's already been designed into the
> > Makefile in the src.rpm.
> > 
> > Anyways, I think I may have it working now, despite the same compiler
> > warnings I mentioned at the beginning??:
> > 
> > [~]$ ./crash src/linux/vmlinux crash.dump
> > 
> > crash 7.1.5
> > Copyright (C) 2002-2016  Red Hat, Inc.
> > Copyright (C) 2004, 2005, 2006, 2010  IBM Corporation
> > Copyright (C) 1999-2006  Hewlett-Packard Co
> > Copyright (C) 2005, 2006, 2011, 2012  Fujitsu Limited
> > Copyright (C) 2006, 2007  VA Linux Systems Japan K.K.
> > Copyright (C) 2005, 2011  NEC Corporation
> > Copyright (C) 1999, 2002, 2007  Silicon Graphics, Inc.
> > Copyright (C) 1999, 2000, 2001, 2002  Mission Critical Linux, Inc.
> > This program is free software, covered by the GNU General Public
> > License,
> > and you are welcome to change it and/or distribute copies of it under
> > certain conditions.  Enter "help copying" to see the conditions.
> > This program has absolutely no warranty.  Enter "help warranty" for
> > details.
> >  
> > GNU gdb (GDB) 7.6
> > Copyright (C) 2013 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/g
> > pl
> > .html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law.  Type "show
> > copying"
> > and "show warranty" for details.
> > This GDB was configured as "x86_64-unknown-linux-gnu"...
> > 
> > crash: failed to read pageflag_names entry
> >       KERNEL: src/linux/vmlinux
> >     DUMPFILE: crash.dump  [PARTIAL DUMP]
> >         CPUS: 8
> >         DATE: Tue Aug 23 15:12:26 2016
> >       UPTIME: 00:04:26
> > LOAD AVERAGE: 0.20, 0.29, 0.13
> >        TASKS: 300
> >     NODENAME: nvmf-host03.jf.intel.com
> >      RELEASE: 4.8.0-rc3
> >      VERSION: #1 SMP Tue Aug 23 12:22:39 PDT 2016
> >      MACHINE: x86_64  (3600 Mhz)
> >       MEMORY: 7.8 GB
> >        PANIC: "sysrq: SysRq : Trigger a crash"
> >          PID: 10568
> >      COMMAND: "bash"
> >         TASK: ffff880282a58080  [THREAD_INFO: ffff88026c5e8000]
> >          CPU: 3
> >        STATE: TASK_RUNNING (SYSRQ)
> > crash>
> > 
> > 
> 
> If this looks right/reasonable, I captured all the steps here.  If I
> captured that correctly, i could submit a patch to README on how to do
> this statically?:

To be honest, I really don't want to publish it in the package because
then I would be on the hook for supporting it, which I am definitely not
interested in.  (Not to mention that I couldn't even get it to build).  
And I don't recall anyone ever asking for it until you did.  I'm curious
as to why you can't easily run the crash session on a host where you
could build it normally?

That being the case, there will always be this discussion that I could
point to for anybody in the future who might be interested.

Dave

> 
> -----------------
> 
> Building 'crash' statically (w/lzo2 support)
> ============================================
> 
> To attempt to build 'crash' statically with pretty common lzo2 support
> (used by 'makedumpfile'), the static library liblzo2.a is
> needed.  However, this is not available in Fedora 24 .rpm packages :-(.
> 
> To build it yourself, try:
> 
> mkdir lzo2_temp
> cd lzo2_temp/
> yumdownloader --source lzo-devel
> pm2cpio lzo-2.08-8.fc24.src.rpm | cpio -idv
> tar xf lzo-2.08.tar.gz
> cd lzo-2.08/
> run ./configure if need-be
> make liblzo2.a
> 
> Then after downloading the crash repo:
> https://github.com/crash-utility/crash.git
> 
> Specify to build it statically in the crash/ directory by creating a
> file called LDFLAGS.extra with a couple of static flags:
> 
> $ cat LDFLAGS.extra
>   -static -static-libgcc
> 
> and in crash/gdb-X.Y/Makefile at TOPLEVEL_CONFIGURE_ARGUMENTS variable
> add:
> 
> --enable-static=yes
> 
> (example:
> # The gcc driver likes to know the arguments it was configured with.
> TOPLEVEL_CONFIGURE_ARGUMENTS=./configure --with-separate-debug-
> dir=/usr/lib/debug --with-bugurl= --with-expat=no --with-python=no --
> disable-sim --enable-static=yes)
> 
> and back in the top crash/ directory build
> the whole thing with the lzo2 library:
> 
> $ make lzo
> 
> (adds to LDFLAGS.extra and creates CFLAGS.extra)
> 
> 
> > > 
> > > Dave
> > > 
> > > --
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> > > https://www.redhat.com/mailman/listinfo/crash-utility
> > 
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