[Lazarus] Strange problem compiling IDE

[Werner Pamler]

Am 27.03.2017 um 21:37 schrieb C Western via Lazarus:
>> But nevertheless, as mentioned in the beginning, I don't think that
>> these files are the reason of the compilation issues that you mention.
>> If that were true then anybody would have them - at least I don't.
>
> I can't claim to be an expert on the way the search path works, but 
> the issue might only surface when spe is used in a component which is 
> compiled as part of the IDE. Can I suggest a short term fix is to 
> rename the local copies of the units (spe -> spe_fixed)? This will 
> definitely remove the clash.

I understand. A package using the original spe and TAChart using a 
modified spe with the same name cannot coexist. You had not written this 
in the previous posts.

At the moment TAChart has these modified numlib files in its 
numlib_fixes folder: ipf (fitting, splines), mdt, sle. I am writing a 
patch to remove the hard-coded array length in the numlib unit typ which 
lead to the addition of ipf to TAChart. But this will only be a longterm 
solution because fpc has a slow version cycle time and Lazarus wants to 
support older fpc versions as well.

Luckily, no other units of numlib depend on ipf, and therefore, I could 
rename the modified ipf to ipf_fix. mdt and sle seem to contain minor 
modifications, a diff shows me that they were modified only to silence 
the compiler, and so I deleted them. In total, now TAChart does no 
longer contain any modified equally named units from other packages.