[fpc-pascal] CThreads problem when cross-compiling to ARM/RPi.

[Bruce Tulloch]

Okay, I understand the reason for the two file locations, thanks.

The problem occurs ONLY when cross-compiling to ARM. Native (and cross to
i386) is fine.

The files I referred to are on the crossroot not the host despite
appearances; the crossroot is at /usr/local/opt/chroot/raspbian/rootfs but
I reported these files in my previous email from within a qemu enabled
chroot (so they looked like they were native). The machine name "beria" is
the chroot and "fermi" is the host.

My apologies for the confusion.

-b


On Thu, May 23, 2013 at 11:19 PM, Jonas Maebe <jonas.maebe at elis.ugent.be>wrote:

>
> On 23 May 2013, at 15:03, Bruce Tulloch wrote:
>
>  On Thu, May 23, 2013 at 10:50 PM, Jonas Maebe <jonas.maebe at elis.ugent.be>
>> **wrote:
>>
>>
>>> On 23 May 2013, at 14:32, Bruce Tulloch wrote:
>>>
>>> On Thu, May 23, 2013 at 10:28 PM, Jonas Maebe <jonas.maebe at elis.ugent.be
>>> >
>>>
>>>> **wrote:
>>>>
>>>>
>>>>
>>>>  On 23 May 2013, at 14:25, Bruce Tulloch wrote:
>>>>>
>>>>> Do you have a libdl.so in your library search path? And what kind of
>>>>> reference to libdl does link.res contain?
>>>>>
>>>>> Yes, it's in the search path as:
>>>>>
>>>>
>>>> root at beria:/lib/arm-linux-**gnueabihf# ls -l libdl*
>>>> -rw-r--r-- 1 root root 9812 Feb 23 00:37 libdl-2.13.so
>>>> lrwxrwxrwx 1 root root   13 Feb 23 00:37 libdl.so.2 -> libdl-2.13.so
>>>>
>>>>
>>> You don't have libdl.so, only libdl.so.2. The latter is for use at run
>>> time, the former for use at link/compile time. Install the libc-dev or
>>> similar package in your crossroot to get it along with other missing
>>> symlinks. Do not start creating those manually, it will only lead to
>>> errors
>>> and confusion down the line.
>>>
>>>  Okay, but it is installed:
>>
>> root at beria:~# apt-file search libdl.so
>> libc6: /lib/arm-linux-gnueabihf/**libdl.so.2
>> libc6-dev: /usr/lib/arm-linux-gnueabihf/**libdl.so
>>
>
> The topic of this thread is about cross-compiling, but those are the files
> on the native system. Are you getting this error while cross-compiling or
> while compiling natively? If you are compiling natively, try compiling
> something with "gcc -### x.c -ldl" to see what parameters gcc passes to
> linker (create an empty x.c file first).
>
>
>  root at beria:~# apt-show-versions libc6-dev
>> libc6-dev/wheezy uptodate 2.13-38+rpi2
>>
>> but I noticed that:
>>
>> root at beria:/usr/lib/arm-linux-**gnueabihf# ls -l libdl*
>> -rw-r--r-- 1 root root 9042 Feb 23 00:38 libdl.a
>> lrwxrwxrwx 1 root root   35 Feb 23 00:38 libdl.so ->
>> /lib/arm-linux-gnueabihf/**libdl.so.2
>>
>> which means they're the same file.
>>
>
> Yes, they are the same file. Why that is the case and why nevertheless
> need both is what I tried to explain in my previous message.
>
>
>
> Jonas
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