Synapse and Catalina SSL causing crash

[Thaddy]

While trying to put together a working example, my iMac mini's disk has just died. It is pushing up daisies, gone to meet its maker, it is an ex-mini.
Will try to get a new one (second hand, any offers?)
It was only seven years old.... It had already a long history of illness...

[trev]

While trying to put together a working example, my iMac mini's disk has just died. It is pushing up daisies, gone to meet its maker, it is an ex-mini.
Will try to get a new one (second hand, any offers?)
It was only seven years old.... It had already a long history of illness...

I've replaced disk drives in Mac minis from 2009, 2010, 2011 and 2012 - it's relatively easy, and even easier once you can dispense with the putty knife models. No need to buy another mini. Plenty of DIY videos online.

My 2009 Mac mini finally died after 11 years of 24x7 service earlier this year - spontaneous reboots several times a day. Not a bad innings though

[VTwin]

This is what I use - it works on macos Mojave and Catalina, FreeBSD, Ubuntu Linux and Windows.

Many thanks. I have been using Synapse, which seemed to work fine, but was unaware of the Catalina issue, and the potential Windows issue. This gets rid of the Synapse dependence as well.

Your code is working fine for me on Linux, Mac, and Windows. I do not currently have Catalina installed.

[trev]

Good to hear VTwin.

[Arvur]

For those who need Synapse to work with LibreSSL on Catalina and BigSur. Call this routine from initialization section of ssl_openssl_lib:

{$IFDEF DARWIN}
procedure CheckOpenSSLFixNeeded;
const
  fixDarwinRelease = 19; // Catalina
var
  KernelInfo: UtsName;
begin
  if (fpUName(KernelInfo) = 0) then
    if (StrToIntDef(Copy(KernelInfo.Release, 1, 2), 0) >= fixDarwinRelease) then begin
      DLLSSLName  := '/usr/lib/libssl.46.dylib';
      DLLUtilName := '/usr/lib/libcrypto.44.dylib';
    end; 
end;
{$ENDIF DARWIN}

Use IFDEF to call this on Darwin only.

P.S. Catalina blocked using libssl.dylib and libcrypto.dylib wrappers and BigSur stopped us from listing dylib's in /usr/lib/ to find last version. So we just stick on existing LibreSSL version.