Thanks again Joel.

If there were a contest to see how many erogenous warning and errors that could be generated from developing on an old platform, we might be in the running. From missing declarations from the most basic such as WIN32 to others that have much more of an obscure nature to them. To problems occurring from subsystems like PDSK and LDAP that happen to be insufficient in their library versions, to completely missing libraries and header files. One can sit watching the compiler and or linker scroll volumes of errors for what seems like an eternity.
Then comes the order in which products must be installed as when attempting to correct issue with say the MS SDK and it’s inability to load while the C redistributable is installed. And don’t even want to get into the OS, and development tool service packs which at times appear to have a desire be loaded and then reloaded as other products are added. After a while you start to feel like a dog that’s chasing his own tail.

While it did mean leavening all of this behind, thank goodness, moving to the new version was definitely the way to go, thanks for getting us headed in the right direction.

This is neither here nor there, but I’ve noticed when checking file sizes for Curl dll’s and library files, they seem to be all over the place. Up for some and down in others, which is to be expected as the product grows, but it seems unusual for later releases to be smaller then previous ones. Is this possibly coming from the particular features the Curl version was built with?

Thanks

  ----- Original Message -----
  From: Joel Winarske
  To: libcurl development
  Sent: Thursday, May 17, 2018 12:48 PM
  Subject: Re: Old Curl Project

  Either should work fine. I just used the most current release for my CMake file.

  Whichever VS version you do use, ensure you have the proper tool chain installed to support XP prior to using CMake.

  On Thu, May 17, 2018 at 9:16 AM, Don Landsom <Don.Landsom_at_verizon.net> wrote:

    Thanks for the help and links. We have no problem going after a build with the latest and greatest. We already have 7.59, but noticed that 7.60 was just recently released. Should we go ahead and grab 60 and work with it instead of 59?

      ----- Original Message -----
      From: Joel Winarske
      To: libcurl development
      Sent: Thursday, May 17, 2018 11:31 AM
      Subject: Re: Old Curl Project

      I just tested the follow work via CMake and VS2015:
      https://gist.github.com/INRIX-joel-winarske/beb8a4a1192d5737fd789f05b22590ca

      Copy CMakeLists.txt to a folder, create a subfolder called build. cd into that, and issue the solution generator command:

          cmake -G"Visual Studio 14 2015" ..

      This does need to be run on the build machine, and note it will have hard coded paths to the build machine.

      Swap out the below string depending on which VS variant you want:
        Visual Studio 14 2015

        Visual Studio 12 2013
        Visual Studio 11 2012
        Visual Studio 10 2010
        Visual Studio 9 2008
        Visual Studio 8 2005

      After that open your selected VS as admin (to allow installation), and open the solution.
      Ensure your target for each project is as you want, then build "BUILD_ALL".

      You may need to right-click solution, and select retarget picking the proper sdk/toolchain for XP.

      Note I am running the generator cmd in a generic windows cmd prompt. Just ensure CMake is in your path.

      Joel

      On Thu, May 17, 2018 at 6:09 AM, Don Landsom <Don.Landsom_at_verizon.net> wrote:

        Joel, Thanks for the XP and VS2015 link, much appreciated.

        As for any preferences towards OpenSSL or any other libraries, we have none with our primary goal being to simply get our interim fix up and running. If Mbedtls makes for an easy drop in replacement for OpenSSL then there would be no objection.
          ----- Original Message -----
          From: Joel Winarske
          To: libcurl development
          Sent: Thursday, May 17, 2018 8:48 AM
          Subject: Re: Old Curl Project

          Hi Don,

          You can Target XP with visual studio 2015. Clues found here: https://msdn.microsoft.com/en-us/library/jj851139.aspx

          CMake has supported VS2015 solution generation for a while. I would avoid OpenSSL hair pulling and use Mbedtls with the latest curl release, unless there is something particular you're using in OpenSSL, that Mbedtls doesn't have.

          Joel

          On Thu, May 17, 2018, 5:19 AM Don Landsom <Don.Landsom_at_verizon.net> wrote:

            Thanks for the message and guidance provided, and yes trying to build apps
            on old systems has it’s challenges, and more times then not proves to be
            more work then it’s worth. However being under time constraints paints a
            different picture pushing us down the path of adopting this interim step.

            Initially looked at taking the leap to the latest curl version only to
            realize how many subsystems wouldn’t be easily adapted to the old XP
            platform and it’s development tools. Parallel efforts are underway, slapping
            a Band-Aid on the old, and creating the new through the migration of the
            legacy systems to a current development environment.

            The version of libcurl being used appears to be linked with openssl-0.9.7e,
            c-ares-1.2.1 and zlib-1.2.1. The interface calls made from VB6 through the
            wrapper makes use of the Curl ‘easy’ interface.

            The hopes were that the Band-Aid approach could mimic the build above,
            substituting Curl-7.13 with Curl-7.20 just long enough to bridge the gap
            between now and when the migration to the new system is complete.

            A preliminary test showed that the basic Curl-7.20 version builds
            successfully on XP, however it would seem that this build is void of the
            required libraries: openssl, c-ares or zlib.

            If we can incorporate these additional libraries into our successful test
            build of 7-20, we could have our Band-Aid.

            ----- Original Message -----
            From: "Daniel Stenberg" <daniel_at_haxx.se>
            To: "libcurl development" <curl-library_at_cool.haxx.se>
            Sent: Thursday, May 17, 2018 4:26 AM
            Subject: Re: Old Curl Project

> On Thu, 17 May 2018, Don Landsom wrote:
>
>> I'm new here and was hoping to learn more about Curl in the attempts to
>> breath some life into an old project until it can be brought up to date
>> through a complete overhaul.
>
> You're most welcome!
>
>> Not looking to take too big of a leap hear as everything is to be
>> replaced so I searched to find the closest possible Curl release support
>> SMPT which appears to be Curl-7.20.0.
>
> SMTP support was initially added in 7.20.0, yes. But it has also been
> polished and bugfixed over the years so I would not recommend using the
> first public version supporting it. I think it had a few rough edges still
> for some releases.
>
> In general you won't gain much by doing a small upgrade compared to a big
> upgrade. If you instead jump to the head of the line at 7.60.0, you'll get
> our attention and support if you have problems or questions. Not so much
> for 7.20.0, which is over 8 years old by now.
>
> The API and behavior *should* still be the same as it was back in the
> 7.13.0 days!
>
> Also note that 7.20.0 has a few known security vulnerabilities:
>
> https://curl.haxx.se/docs/vuln-7.20.0.html
>
>> The current application is running VB6 using the dll wrapper VBLibCurl
>> 1.0, so the big question is whether this wrapper can be interfaced with
>> Curl-7.20.0.
>
> I would imagine that building stuff on such old legacy systems is a pain
> in general.
>
> --
>
> / daniel.haxx.se
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Received on 2018-05-18