Hello,

After installing the DMD2.063.2 rpm on openSUSE-12.2 and openSUSE-12.3 (both 32bits) I had some trouble with building dub (~master). Linkage failed with:
dmd -ofbin/dub -g -debug -w -property -Isource  -L-lphobos2 -L-lcurl   @build-files.txt ....
/opt/dmd2/linux/bin32/../lib32/libphobos2.so: undefined reference to `curl_global_cleanup@CURL_OPENSSL_3'
/opt/dmd2/linux/bin32/../lib32/libphobos2.so: undefined reference to `curl_easy_cleanup@CURL_OPENSSL_3'...

The same issues occurred with the zip.
Building a sample c/c++ program using libcurl linked without problems...

After some dissection this was revealed:
ldd on libphobos2.so shows:
ldd /opt/dmd2/linux/lib32/libphobos2.so
ldd: warning: you do not have execution permission for `/opt/dmd2/linux/lib32/libphobos2.so'
/opt/dmd2/linux/lib32/libphobos2.so: /usr/lib/libcurl.so.4: no version information available (required by /opt/dmd2/linux/lib32/libphobos2.so)
        linux-gate.so.1 (0xb77bf000)
        libcurl.so.4 => /usr/lib/libcurl.so.4 (0xb748d000)

Turns out the supplied libphobos2.so in the zip/rpm is linked against a newer version of libcurl than available on openSUSE-12.x. I can imagine this does not only affect openSUSE-12 users.

After a git clone and checkout of dmd/druntime/phobos, the host-build dmd could compile-and-link dub without problems.

So, would it be possible for the next release of the zip and rpms to link libphobos against a older (oldest possible) libcurl to alleviate/resolve this problem?

Thanks.
Arjan

On Monday, 15 July 2013 at 13:13:53 UTC, Arjan wrote:
> ...

Shared library support is only semi-official so packaging/toolchain issues are expected within a reasonable limit. Thanks for your report, that is definitely worth paying attention to in next release.

P.S. IMHO a typical example why providing packages on dlang.org instead of delegating maintenance to actual platform users is not a good idea ;)

On 15/07/13 15:13, Arjan wrote:
> Hello,
> 
> After installing the DMD2.063.2 rpm on openSUSE-12.2 and openSUSE-12.3 (both 32bits) I had some trouble with building dub (~master). Linkage failed with:
> dmd -ofbin/dub -g -debug -w -property -Isource  -L-lphobos2 -L-lcurl   @build-files.txt ....
> /opt/dmd2/linux/bin32/../lib32/libphobos2.so: undefined reference to `curl_global_cleanup@CURL_OPENSSL_3'
> /opt/dmd2/linux/bin32/../lib32/libphobos2.so: undefined reference to `curl_easy_cleanup@CURL_OPENSSL_3'...
> 
> The same issues occurred with the zip.
> Building a sample c/c++ program using libcurl linked without problems...
> 
> After some dissection this was revealed:
> ldd on libphobos2.so shows:
> ldd /opt/dmd2/linux/lib32/libphobos2.so
> ldd: warning: you do not have execution permission for `/opt/dmd2/linux/lib32/libphobos2.so'
> /opt/dmd2/linux/lib32/libphobos2.so: /usr/lib/libcurl.so.4: no version information available (required by /opt/dmd2/linux/lib32/libphobos2.so)
>         linux-gate.so.1 (0xb77bf000)
>         libcurl.so.4 => /usr/lib/libcurl.so.4 (0xb748d000)
> 
> Turns out the supplied libphobos2.so in the zip/rpm is linked against a newer version of libcurl than available on openSUSE-12.x. I can imagine this does not only affect openSUSE-12 users.
> 
> After a git clone and checkout of dmd/druntime/phobos, the host-build dmd could compile-and-link dub without problems.
> 
> So, would it be possible for the next release of the zip and rpms to link libphobos against a older (oldest possible) libcurl to alleviate/resolve this problem?
> 

This is a known problem and will be fixed on the next release.
Current phobos shared library has "libcurl versioned symbols" (@CURL_OPENSSL_3) and they are only usable on systems like Debian, Ubuntu, Linux Mint, etc. This problem is not related to the libcurl version.

Regards,
-- 
Jordi Sayol