Hi Elena, John, Ward, Allen, Michael
> Support for /MT(d) was removed from CMake because we do not have resources to
> support it with the HDF software (including HDF5).
> If this is a desired feature, we will need someone to test it on a regular
> basis (daily with development and release HDF5 branches).
> I had set up 4 nightly builds of hdf5, static and dynamic, with and
> without fortran, and unfortunately, all goes wrong when you start
> using ifort on windows because of the way the supplied fortran libs
> are linked (once you link the intel fortran libraries your link errors
> multiply and you have no control of those libraries so having an
> option to change static/dynamic is no help!)
> I would concur that
> 1) Adding a version stamp to the dll/lib names is desirable (and easy to
> do)
> 2) Adding a simple static/dynamic run time link option (and easy to do)
OK, so, why not just add now the simplest configurations that are already
working, and that Ward has already done for netCDF?
The only minimal configuration that I think is certainly needed for everyone is
item 2), the static/dynamic run time link option, the equivalent of GNU
automake --enable-static/shared
One of the things that I am interested in is to build a Cmake build system for
NCO also, so what do you all think of a common CMake system for HDF, netCDF and
NCO?
I mean, things like
1) common syntax options like netCDF's
-DBUILD_SHARED_LIBS=OFF
2) use of environment variables, with the same name for libraries and header
files names;
for example, I use on my projects for the location of the curl library, the name
LIB_CURL
and netCDF uses
CURL_LIBRARY
this would make things simpler for anyone that needs to build HDF, netCDF and
NCO.
Elena,
if you need to discuss in detail, call me (same number still), or we can set
Skype video/audio joint conference calls if needed.
Pedro
------
Pedro Vicente, Earth System Science
University of California, Irvine
http://www.ess.uci.edu/
----- Original Message -----
From: Biddiscombe, John A.
To: HDF Users Discussion List
Cc: help@xxxxxxxxxxxx ; netcdfgroup@xxxxxxxxxxxxxxxx
Sent: Friday, June 07, 2013 1:05 AM
Subject: Re: [netcdfgroup] [Hdf-forum] Make the Cmake Windows build
staticplease !
I'd just like to second Elena's comment below. As one of the people
responsible for the cmake implementation of hdf5, I had a really hard time with
this static/dynamic CRT link issue.
I had set up 4 nightly builds of hdf5, static and dynamic, with and without
fortran, and unfortunately, all goes wrong when you start using ifort on
windows because of the way the supplied fortran libs are linked (once you link
the intel fortran libraries your link errors multiply and you have no control
of those libraries so having an option to change static/dynamic is no help!)
So there was not a simple combination that was easy for all setups and we
basically opted to remove most of the options to get a combination that worked
- It took up so much of my time that I didn't 'finish the job cleanly' and
allow the user to decide for all cases.
I would concur that
1) Adding a version stamp to the dll/lib names is desirable (and easy to
do)
2) Adding a simple static/dynamic run time link option (and easy to do)
I'm happy to test patches if people create them, but all my stuff works fine,
so I'm not volunteering!
JB
[I would also personally favour dynamic linking in 99% of cases. When you
have plugin based architectures where objects are created and destroyed in
different modules, static linking is a no go. I do not suffer from DLL hell and
actually find it much much much easier to distribute binaries to people on
windows than linux]
--
John Biddiscombe, email:biddisco @.at.@ cscs.ch
http://www.cscs.ch/
CSCS, Swiss National Supercomputing Centre | Tel: +41 (91) 610.82.07
Via Trevano 131, 6900 Lugano, Switzerland | Fax: +41 (91) 610.82.82
From: Hdf-forum [mailto:hdf-forum-bounces@xxxxxxxxxxxxxxxxxx] On Behalf Of
Elena Pourmal
Sent: 06 June 2013 17:01
To: HDF Users Discussion List
Cc: help@xxxxxxxxxxxx; netcdfgroup@xxxxxxxxxxxxxxxx
Subject: Re: [Hdf-forum] Make the Cmake Windows build static please !
All,
Support for /MT(d) was removed from CMake because we do not have resources to
support it with the HDF software (including HDF5).
If this is a desired feature, we will need someone to test it on a regular
basis (daily with development and release HDF5 branches). If there are
volunteers, please contact Allen. We will go from there.
Thank you!
Elena
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Elena Pourmal
Director of Technical Services and Operations
The HDF Group
1800 So. Oak St., Suite 203,
Champaign, IL 61820
www.hdfgroup.org
(217)531-6112 (office)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
On Jun 6, 2013, at 3:42 AM, Pedro Vicente wrote:
Hey , Allen & Ward, next time I send an email to *both* of your group lists,
can you just do a "reply-all" ? :-) ... otherwise , we get half of the answers.
>>Building NetCDF statically is already an option, by passing
-DBUILD_SHARED_LIBS=OFF during configuration.
>>This will build the netcdf libraries and utilities statically, avoiding the
direct dependency on MSVCR100.dll.
>>They will, however, still inherit any downstream .dll dependencies from the
curl, hdf and zlib libraries.
Exactly, Ward, netCDF inherits HDF, that 's why I am bugging Allen here :-)
And, yes, the solution is to build *all* downstream code in the *same* way,
either all static or all dynamic;
mixing both will get you linking errors.
>>> You might be able to work around this by downloading (or building) static
versions of these libraries.
Yes, Ward, this can be done by editing the HDF Cmake generated VS projects,
and changing all of them to static, which I just did.
In the curl case, you can do this by editing the file MakefileBuild.vc and
change all /MD (dynamic) to /MT (static)
Runtime library configuration
!IF "$(RTLIBCFG)"=="static"
#RTLIB = /MT
RTLIB = /MTd
RTLIB_DEBUG = /MTd
!ELSE
#RTLIB = /MD
#RTLIB_DEBUG = /MDd
>>Our binaries redistribute the MS CRT dlls that are used to build the
binaries.
Hey, Allen, I was not asking for the *binaries* !
I was asking for an *option* in your CMake system that allows
anyone who wants to generate the Visual Studio projects have them *already*
"static ready" if they wish...
So that, next time I need to generate everything from scratch I don't have to
go each to each one of them (50 + projects ) and click the static button 50
times ...
>>Because of the danger of using different CRTs (HDF lib uses one and user
>>program uses different one) and the possible memory corruption with
>>allocations, we build with /MD and provide the CRT with our binary.
I don't pretend to know everything, but when I don't (often :-) ) I search
read this
http://stackoverflow.com/questions/14749662/microsoft-visual-studio-c-c-runtime-library-static-dynamic-linking
quote
" i personally prefer statically linked. i hate scrambling around looking for
the right redist/dll/etc."
that's what I do, I set to all static , and then move on to do more
interesting things, like writing software, than dealing with DLL idiosyncracies.
quote
"Using /MT is risky if you create DLLs as well as an EXE. You'll end up with
multiple copies of the CRT in your program.
This was especially a problem with earlier versions of VS where each CRT
would get its own heap, "
Was this the problem you meant ?
This might be true if you are distributing *binaries* with both the EXE and
DLL. Or if you are linking your code against a 3rd party library *without* the
code,
someone gave you a LIB and a DLL only.
In the HDF, netCDF and NCO worlds none of this is true: all sources are
available , no secrets here :-)
And you are lucky, Allen , because you only have the downstream ZLIB, and
netCDF only has curl
Here's a list of all NCO dependencies
zlib ,
HDF5,
curl,
netCDF, including OpenDAP, thank you for that :-)
ANTLR, a parser generator for ncap2
GSL, the GNU scientific library
UDUnits, Unidata units (Not yet available for Windows)
Regular Expressions (Not yet available for Windows, tough one this one )
I have Visual Studio projects for all these (except UDUnits and Regular
Expressions)
, because I need to build the *source* , as you can see many projects to
change to static/dynamic/32/64bit/debug/release combinations :-)
Pedro
------
Pedro Vicente, Earth System Science
University of California, Irvine
http://www.ess.uci.edu/
----- Original Message -----
From: "Allen Byrne" <byrn@xxxxxxxxxxxx>
To: <hdf-forum@xxxxxxxxxxxxxxxxxx>
Sent: Wednesday, June 05, 2013 6:18 AM
Subject: Re: [Hdf-forum] Make the Cmake Windows build static please !
> Our binaries redistribute the MS CRT dlls that are used to build the
binaries.
> Because of the danger of using different CRTs (HDF lib uses one and user
> program uses different one) and the possible memory corruption with
> allocations, we build with /MD and provide the CRT with our binary.
>
> Hopefully, as more people use CMake and build a common knowledge of using
> CMake, those wishing to build alternative versions of HDF will share their
> code changes.
>
> Allen
>
> On Wednesday, June 05, 2013 09:34:37 AM Michael Jackson wrote:
>> Funny, I actually _prefer_ the DLL builds because I distribute the runtime
>> C/C++ libraries as allowed by MS. Depending on how one is using the HDF5
>> executables/libraries having each library linked statically against their
>> own C/C++ libraries can also lead to problems because of how memory is
>> allocated/deallocated in each library version. There are 2 evils here and
>> the idea is to pick the least of them. If anything I would petition the
>> HDFGroup to provide BOTH a dynamically linked AND a statically linked
>> runtime version.
>>
>> Just my 2 cents. Then again, I build my own HDF5 for our project precisely
>> because of issues like this.
>> ___________________________________________________________
>> Mike Jackson Principal Software Engineer
>> BlueQuartz Software Dayton, Ohio
>> mike.jackson@xxxxxxxxxxxxxx www.bluequartz.net
>>
>> On Jun 5, 2013, at 8:24 AM, Pedro Vicente <pvicente@xxxxxxx> wrote:
>> > Hi Allen, Ward
>> >
>> > I have a request regarding your new CMake Windows build system, could you
>> > add an option to make the build static regarding the Microsoft libraries
>> > (MSVCR100D.dll) ?
>> >
>> > Starting with version 4.3.1, NCO
>> >
>> > http://nco.sourceforge.net/
>> >
>> > uses the HDF5 and netCDF Windows libraries made with your CMake system,
>> > and this is causing problems for NCO users, as explained here
>> >
>> > https://sourceforge.net/projects/nco/forums/forum/9830/topic/8345151
>> >
>> > and here
>> >
>> > https://sourceforge.net/projects/nco/forums/forum/9829/topic/8417103
>> >
>> >
>> > This is just a matter of changing the compiler flag to /MT(d)
>> >
>> > http://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx
>> >
>> > Using a dynamic build is just a bad idea, because of these DLL issues.
>> >
>> > I have some Windows executables from code I did in the early 90's , that
>> > unfortunately I cannot run today, just because I linked them with DLLs,
>> > with the DLLs from the Visual Studio from that time, that do not exist
>> > anymore (it seems every new version they change the Visual Studio Dlls).
>> >
>> > Because of this I do not use Dlls, I know that eventually something will
>> > go wrong :-)
>> >
>> > Pedro
>> >
>> > ------
>> > Pedro Vicente, Earth System Science
>> > University of California, Irvine
>> > http://www.ess.uci.edu/
>> >
>> >
>> > _______________________________________________
>> > Hdf-forum is for HDF software users discussion.
>> > Hdf-forum@xxxxxxxxxxxxxxxxxx
>> > http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
>>
>> _______________________________________________
>> Hdf-forum is for HDF software users discussion.
>> Hdf-forum@xxxxxxxxxxxxxxxxxx
>> http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
>
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> Hdf-forum@xxxxxxxxxxxxxxxxxx
> http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
>
> _______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@xxxxxxxxxxxxxxxxxx
http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
------------------------------------------------------------------------------
_______________________________________________
netcdfgroup mailing list
netcdfgroup@xxxxxxxxxxxxxxxx
For list information or to unsubscribe, visit:
http://www.unidata.ucar.edu/mailing_lists/
