Using std.net.curl

[Brad Anderson]

On Sun, Jul 1, 2012 at 10:59 AM, Gary Willoughby <dev at kalekold.net> wrote:

> I'm using the built-in curl library on Linux i'm getting linker errors.
> I've installed libcurl4-openssl-dev and it works fine as i can successfully
> compile a sample program. However when using the D lib i get these errors:
>
> [quote]
> :!rdmd api_test.d
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl.o):
> In function `_D3std3net4curl4Curl19_**sharedStaticCtor28FZv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl19_**sharedStaticCtor28FZv+0xf):
> undefined reference to `curl_global_init'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl.o):
> In function `_D3std3net4curl4Curl19_**sharedStaticDtor29FZv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl19_**sharedStaticDtor29FZv+0x5):
> undefined reference to `curl_global_cleanup'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fa_140.o):
> In function `_D3std3net4curl4HTTP4Impl6__**dtorMFZv':
> std/net/curl.d:(.text._**D3std3net4curl4HTTP4Impl6__**dtorMFZv+0x19):
> undefined reference to `curl_slist_free_all'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fa_140.o):
> In function `_**D3std3net4curl4HTTP3dupMFZS3st**d3net4curl4HTTP':
> std/net/curl.d:(.text._**D3std3net4curl4HTTP3dupMFZS3st**d3net4curl4HTTP+0x6b):
> undefined reference to `curl_slist_append'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fa_140.o):
> In function `_**D3std3net4curl4HTTP19clearRequ**estHeadersMFZv':
> std/net/curl.d:(.text._**D3std3net4curl4HTTP19clearRequ**estHeadersMFZv+0x22):
> undefined reference to `curl_slist_free_all'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fa_140.o):
> In function `_**D3std3net4curl4HTTP16addReques**tHeaderMFAxaAxaZv':
> std/net/curl.d:(.text._**D3std3net4curl4HTTP16addReques**tHeaderMFAxaAxaZv+0x5b):
> undefined reference to `curl_slist_append'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fb_ea.o):
> In function `_D3std3net4curl3FTP4Impl6__**dtorMFZv':
> std/net/curl.d:(.text._**D3std3net4curl3FTP4Impl6__**dtorMFZv+0x18):
> undefined reference to `curl_slist_free_all'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fb_ea.o):
> In function `_**D3std3net4curl3FTP3dupMFZS3std**3net4curl3FTP':
> std/net/curl.d:(.text._**D3std3net4curl3FTP3dupMFZS3std**3net4curl3FTP+0xa6):
> undefined reference to `curl_slist_append'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fb_ea.o):
> In function `_**D3std3net4curl3FTP13clearComma**ndsMFZv':
> std/net/curl.d:(.text._**D3std3net4curl3FTP13clearComma**ndsMFZv+0x20):
> undefined reference to `curl_slist_free_all'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_13fb_ea.o):
> In function `_**D3std3net4curl3FTP10addCommand**MFAxaZv':
> std/net/curl.d:(.text._**D3std3net4curl3FTP10addCommand**MFAxaZv+0x31):
> undefined reference to `curl_slist_append'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_1400_432.o):
> In function `_**D3std3net4curl4Curl10initializ**eMFZv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl10initializ**eMFZv+0x42):
> undefined reference to `curl_easy_init'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_1401_149.o):
> In function `_**D3std3net4curl4Curl3dupMFZS3st**d3net4curl4Curl':
> std/net/curl.d:(.text._**D3std3net4curl4Curl3dupMFZS3st**d3net4curl4Curl+0x28):
> undefined reference to `curl_easy_duphandle'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_1405_37c.o):
> In function `_**D3std3net4curl4Curl8shutdownMF**Zv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl8shutdownMF**Zv+0x1e):
> undefined reference to `curl_easy_cleanup'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_1407_14c.o):
> In function `_**D3std3net4curl4Curl3setMFE3etc**1c4curl10CurlOptionAxaZv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl3setMFE3etc**
> 1c4curl10CurlOptionAxaZv+0x35)**: undefined reference to
> `curl_easy_setopt'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_1408_14c.o):
> In function `_**D3std3net4curl4Curl3setMFE3etc**1c4curl10CurlOptionlZv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl3setMFE3etc**1c4curl10CurlOptionlZv+0x2e):
> undefined reference to `curl_easy_setopt'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_1409_14c.o):
> In function `_**D3std3net4curl4Curl3setMFE3etc**1c4curl10CurlOptionPvZv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl3setMFE3etc**1c4curl10CurlOptionPvZv+0x2e):
> undefined reference to `curl_easy_setopt'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_140a_207.o):
> In function `_**D3std3net4curl4Curl5clearMFE3e**tc1c4curl10CurlOptionZv':
> std/net/curl.d:(.text._**D3std3net4curl4Curl5clearMFE3e**tc1c4curl10CurlOptionZv+0x26):
> undefined reference to `curl_easy_setopt'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_140b_2fb.o):
> In function `_**D3std3net4curl4Curl7performMFb**Zi':
> std/net/curl.d:(.text._**D3std3net4curl4Curl7performMFb**Zi+0x23):
> undefined reference to `curl_easy_perform'
> /usr/lib/gcc/x86_64-linux-gnu/**4.6/../../../x86_64-linux-gnu/**libphobos2.a(curl_1403_4a1.o):
> In function `_**D3std3net4curl4Curl11errorStri**ngMFiZAya':
> std/net/curl.d:(.text._**D3std3net4curl4Curl11errorStri**ngMFiZAya+0x11):
> undefined reference to `curl_easy_strerror'
> collect2: ld returned 1 exit status
> --- errorlevel 1
>
> shell returned 1
> [/quote]
>
> I found this error which looks like what i'm getting posted on
> Stackoverflow:
>
> http://stackoverflow.com/**questions/10095150/std-net-**
> curl-linker-errors-in-linux<http://stackoverflow.com/questions/10095150/std-net-curl-linker-errors-in-linux>
>
> Is there a fix for this? It looks like the linker parameters are in the
> wrong order.
>

I just ended up specifying the link command manually (see my answer on the
Stack Overflow).  It's ugly but it works.  Leandro discusses a solution
here: <http://d.puremagic.com/issues/show_bug.cgi?id=7044#c1> It hasn't
been implemented yet though.

Regards,
Brad Anderson
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