Solved: Error when compiling Zeos on Delphi 12

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Prometeus
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Solved: Error when compiling Zeos on Delphi 12

Post by Prometeus »

Hello,

According to the attached picture, I am getting an error when compiling the 'Delphi 12' package from subversion '8051'. I think it's related to some compiling version issue, but I could not find the 'inc' file that probably needs fixing. Any tip on this?

Thanks!
2023-11-12_130021.jpg
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Last edited by Prometeus on 06.12.2023, 05:20, edited 1 time in total.
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aehimself
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Re: Error when compiling Zeos on Delphi 12

Post by aehimself »

Hello,

Known issue, a hotfix is already on it's way.

More info here.
Delphi 12.1, Zeos 8 from latest GIT snapshot
Using:
- MySQL server 8.0.18; libmariadb.dll 3.3.8
- Oracle server 11.2.0, 12.1.0, 19.0.0; oci.dll 21.13
- MSSQL 2012, 2019; sybdb.dll FreeTDS_2435
- SQLite 3.45.2
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Prometeus
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Re: Error when compiling Zeos on Delphi 12

Post by Prometeus »

Hello aehimself,

Thanks for the info!

For some reason I received this message when I tried to read your link: "You are not authorised to read this forum."
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aehimself
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Re: Error when compiling Zeos on Delphi 12

Post by aehimself »

Long story short, the issue is caused by the weak NativeInt alias introduced in Delphi 12 and the proposed solution is available as a pull request on GitHub :)
Delphi 12.1, Zeos 8 from latest GIT snapshot
Using:
- MySQL server 8.0.18; libmariadb.dll 3.3.8
- Oracle server 11.2.0, 12.1.0, 19.0.0; oci.dll 21.13
- MSSQL 2012, 2019; sybdb.dll FreeTDS_2435
- SQLite 3.45.2
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Prometeus
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Re: Error when compiling Zeos on Delphi 12

Post by Prometeus »

With the current fixes the first errors were gone but it failed with this error:

[dcc32 Error] ZDbcODBCStatement.pas(1961): E2251 Ambiguous overloaded call to 'Max'
ZCompatibility.pas(841): Related method: function Max(const NativeUInt; const NativeUInt): NativeUInt;
System.Math.pas(5172): Related method: function Max(const Cardinal; const Cardinal): Cardinal;

When I changed the call on line '1961' from 'Max' to 'System.Math.Max' or 'ZCompatibility.Max' it compiled without errors and installed correctly.
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aehimself
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Re: Error when compiling Zeos on Delphi 12

Post by aehimself »

That modification is in the pull request as well. The "ZCompatibility." prefix mefore Max is included if NATIVEINT_WEAK_REFERENCE is defined.
Same had to be done in ZDbcOracleUtils : 1433, ZDbcInterbaseFirebirdMetaData : 2000 and ZAbstractRODataSet : 9417 as well.
Delphi 12.1, Zeos 8 from latest GIT snapshot
Using:
- MySQL server 8.0.18; libmariadb.dll 3.3.8
- Oracle server 11.2.0, 12.1.0, 19.0.0; oci.dll 21.13
- MSSQL 2012, 2019; sybdb.dll FreeTDS_2435
- SQLite 3.45.2
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