I use curl in my application. If I link it with -lcurl - symbols are undefined (libcurl3 installed), if I link with -lphobos2 - it links. So curl is linked with libphobos2.so? But what to do if I need static linking? (ubuntu 12.04 x86_64, dmd 2.063.2)

On 28/09/13 10:28, Alexandr Druzhinin wrote:
> I use curl in my application. If I link it with -lcurl - symbols are undefined (libcurl3 installed), if I link with -lphobos2 - it links. So curl is linked with libphobos2.so? But what to do if I need static linking? (ubuntu 12.04 x86_64, dmd 2.063.2)
> 

To link against libcurl (-lcurl) you need to install libcurl development files. On Ubuntu, install one of these three packages: "libcurl4-openssl-dev", "libcurl4-gnutls-dev" or "libcurl4-nss-dev".

For libcurl static linking you should link against all libraries that libcurl depends on.

-- 
Jordi Sayol

28.09.2013 17:06, Jordi Sayol пишет:
> On 28/09/13 10:28, Alexandr Druzhinin wrote:
>> I use curl in my application. If I link it with -lcurl - symbols are undefined (libcurl3 installed), if I link with -lphobos2 - it links. So curl is linked with libphobos2.so? But what to do if I need static linking? (ubuntu 12.04 x86_64, dmd 2.063.2)
>>
>
> To link against libcurl (-lcurl) you need to install libcurl development files. On Ubuntu, install one of these three packages: "libcurl4-openssl-dev", "libcurl4-gnutls-dev" or "libcurl4-nss-dev".
>
> For libcurl static linking you should link against all libraries that libcurl depends on.
>
Thank you for info. I have installed "libcurl4-gnutls-dev" - the same happens, symbols are undefined. But with -lphobos2 it links... Why linker don't find these symbols if libs are installed? Should I pass to linker some additional info in this case?

On 28/09/13 14:41, Alexandr Druzhinin wrote:
> 28.09.2013 17:06, Jordi Sayol пишет:
>> On 28/09/13 10:28, Alexandr Druzhinin wrote:
>>> I use curl in my application. If I link it with -lcurl - symbols are undefined (libcurl3 installed), if I link with -lphobos2 - it links. So curl is linked with libphobos2.so? But what to do if I need static linking? (ubuntu 12.04 x86_64, dmd 2.063.2)
>>>
>>
>> To link against libcurl (-lcurl) you need to install libcurl development files. On Ubuntu, install one of these three packages: "libcurl4-openssl-dev", "libcurl4-gnutls-dev" or "libcurl4-nss-dev".
>>
>> For libcurl static linking you should link against all libraries that libcurl depends on.
>>
> Thank you for info. I have installed "libcurl4-gnutls-dev" - the same happens, symbols are undefined. But with -lphobos2 it links... Why linker don't find these symbols if libs are installed? Should I pass to linker some additional info in this case?
> 

Can I see your full command line please?
$ dmd -lcurl ....

-- 
Jordi Sayol

28.09.2013 20:14, Jordi Sayol пишет:
>
> Can I see your full command line please?
> $ dmd -lcurl ....
>
I use dub, but I did rdmd version:
rdmd --build-only -I/home/drug/.dub/packages/derelict-master/import -I/home/drug/.dub/packages/glamour-master -version=Derelict3 -version=gl3n -I/home/drug/.dub/packages/gl3n-master/ -I/home/drug/3rdparties/cairoD/src -I/home/drug/.dub/packages/arsd-master -version=CAIRO_HAS_PNG_FUNCTIONS -L-lphobos2 -L-L/home/drug/3rdparties/cairoD -L-lcairoD -L-lcairo -L-ldl -ofbin/geoviewer src/app.d

If I change -L-lphobos2 на -L-lcurl I get:
/usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In function `_D3std3net4curl4Curl19_sharedStaticCtor34FZv':
std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticCtor34FZv+0xf): undefined reference to `curl_global_init'
/usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In function `_D3std3net4curl4Curl19_sharedStaticDtor35FZv':
std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticDtor35FZv+0x5): undefined reference to `curl_global_cleanup'
/usr/lib/x86_64-linux-gnu/libphobos2.a(curl_144c_140.o): In function `_D3std3net4curl4HTTP4Impl6__dtorMFZv':
std/net/curl.d:(.text._D3std3net4curl4HTTP4Impl6__dtorMFZv+0x19): undefined reference to `curl_slist_free_all'
...

and so on. That is in this case I have static linking but curl symbols are not definded somehow.