[fpc-devel]Library linking with C explanation

[Sergey Korshunoff]

>> Reply-To: core at freepascal.org
>> Date: Sun, 3 Jun 2001 15:12:42 +0200 (CEST)
>> From: Peter Vreman <pfv at cooldown.demon.nl>
>> X-Sender: pfv at dell
>> To: core at freepascal.org
>> Subject: Library linking with C working !
>>
>>
>> It was more easy than i first thought. No need for .ctor and .dtor
>> stuff. Just pass "-init <Symbolname>" to the linker and the symbol to
>> run at load of the library is set. The same for -fini.
>>
>> The 1.0.5 compiler works correctly.

Congratulation!
We speak about last variant of 1.0.5 -- that is right?
FPC 1.0.5 from 14 march 2001 do not works correctly.

>>  The 1.1 compiler crashes at exit
>> when the pas1 function is called from p.c. If the function call is
>> left away then the progrma shuts down correctly.
>>
>> 1. Compile p1.pp normally
>> 2. Move libp1.so to /usr/lib or any other path searched by ldconfig
>> 3. Run ldconfig
>> 4. Compile p.c with: 'gcc -o p p.c -lp1'
>> 5. Run the program.

This can be done simpler (comands are for DCC from Kylix):
1) dcc p1.pp
2) gcc -o p p.c libp1.so
3) LD_LIBRARY_PATH=`pwd` p

Regards,
    Sergey Korshunoff