On 6/26/25 16:19, Zinovy Soltsov via curl-library wrote: > To whom it may concern, > > We have an old C++ application using the old Curl library, probably from year > 2007. We use it to communicate with one of our content provider's SFTP > servers. The content provider recently switched to sha256 key fingerprint and > it broke our application. This is not a surprise since this didn't exist so > long ago. > > I downloaded the latest Curl 18.14.1 binaries for Windows 32 bit applications > from https://curl.se/windows/ and tried to link it statically to the C++ > program. I got a number unresolved external symbol link errors. Most of them > (but not all of them) were about __memcpy_chk function. As far as I > understand this is a Linux function and Windows doesn't have such an API. > Also, although it is not a big deal, the library binaries have .a file name > Linux extension not the Windows .lib extension. It just makes me suspect that > the library binaries were compiled for Linux applications. > > I also tied to link the Curl library dynamically and didn't get any issues > with it but our executable started blowing up when I put it on one of our > servers along with libcurl.dll. > > This is pretty urgent for us since we use this application for clients like > WellsFargo and Bank of America. Your help would be greatly appreciated.
Given that this is urgent for your business, I recommend paying for commercial support rather than asking the developers of an open source project to help you for free. Commercial support for curl and libcurl is available from WolfSSL: https://www.wolfssl.com/commercial-curl-support/. I would not at all be surprised if the cost of the support is more than paid for by being able to resume business operations sooner. -- Sincerely, Demi Marie Obenour (she/her/hers)
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