[Interest] [Development] Qt installation prefix path issue

[Christian Gagneraud]

On 26/10/2017 11:21 AM, Thiago Macieira wrote:
> On Wednesday, 25 October 2017 14:47:43 PDT Christian Gagneraud wrote:
>>> Considering the contents of that website change very frequently, I'd
>>> assume
>>> that the reason is either that there's no point indexing something that
>>> becomes stale quickly or that they want to reduce the workload on the
>>> server caused by the indexing (remember: everything is generated).
>>
>> I do understand that they want to reduce the server load, but it would
>> be nice to be able to search from google et al ('git grep' is one thing,
>> 'google grep' is another).
>>
>> When I answered your email, i would have liked to give a link, because i
>> find these sort of things very interesting indeed. Unfortunately a quick
>> googling didn't return anything, and i couldn't remember where exactly i
>> saw the "relocation by patching the binaries", i'm pretty sure it was a
>> python script in Boot2Qt.
> 
> Sorry, nothing replaces having a local copy if you don't know for sure what
> you're looking for. Today, I spent half an hour figuring out where the
> different /dev/random implementations are on FreeBSD, OpenBSD, NetBSD and
> macOS. They're all indexed in fxr.watson.org, but the macOS copy there is
> stale. So I went to opensource.apple.com and GitHub. Even knowing the exact
> function name I'm looking for (read_random), I can't find it online.
> 
> And note how GitHub isn't indexed either:
> https://www.google.com/search?q=read_random+site%3Agithub.com%2Fopensource-apple%2Fxnu

Interesting "read_random site:github.com/apple/darwin-xnu" returns 6 
results. One of them points to bsd/sys/random.h, is this your missing 
include? ;P

Maybe the forked repo is too new (created on the 1st of october), or 
maybe google indexes only "big orgs".

Chris

> 
>> github content is indexed, and they even have their own search engine
>> with REST API, and a new GraphQL API it seems
> 
> Doesn't appear to be the case for everything, as shown above.
> 
>> The query "qabstractitemmodel site:github.com" on google return 1870
>> results for example.
>> You can even try "qabstractitemmodel site:github.com/qt"
>>
>> Having said that, yes the content changes all the time, so (google)
>> results are somehow volatile, still they tend to point you in the right
>> direction. I sometimes found interesting git repos this way, that I then
>> clone, grep, study, and sometimes end up contributing back.
> 
> And I found out that read_random() is now a system call on FreeBSD, bypassing
> the ARC4 algorithm, and that getentropy() does exist on macOS and on Solaris,
> and that Qt check is just missing an #include.
> 
>> PS: I don't get what you mean by "everything is generated", do you mean
>> that HTML is generated on the fly w/o caching?
> 
> Yes.
>