[Opalvoip-devel] Building Opal DLL

[Leonardo N. <leo...@gm...>]

Hello,

I wanted to test Opal to get familiar with how things work, but when I
tried to run the code I wrote, an error message popped up saying
"opald.dll" was not installed. Then I got confused, since I only wanted to
see things working, I only compiled the static libs, but it's requesting
for the .dlls anyway. So that's my first question:

1. Why is it asking for the dlls when I linked the project with opal and
ptlib's static libs?

To solve this problem, I decided to build the opal dll, but I'm getting an
unresolved external symbol error, that I think it's related to the VP8
plugin (which I don't want to use and it's not compiled) and one other
thing I'm not able to pinpoint the possible cause. Here is the build output:

1>------ Build started: Project: OPAL DLL, Configuration: Debug Win32 ------
1>Build started 09/03/2016 16:05:32.
1>InitializeBuildStatus:
1>  Touching "..\..\lib\Win32\Debug\OPAL DLL.unsuccessfulbuild".
1>CustomBuild:
1>  All outputs are up-to-date.
1>ClCompile:
1>  All outputs are up-to-date.
1>ResourceCompile:
1>  All outputs are up-to-date.
1>Link:
1>     Creating library C:\Users\Prav\Documents\opal\lib\opald.lib and
object C:\Users\Prav\Documents\opal\lib\opald.exp
1>opalsd.lib(mediafmt.obj) : error LNK2001: unresolved external symbol
"class OpalVideoFormat const & __cdecl GetOpalVP8(void)" (?GetOpalVP8@
@YAABVOpalVideoFormat@@XZ)
1>opalsd.lib(rtp_session.obj) : error LNK2019: unresolved external symbol
"public: __thiscall OpalICEMediaTransport::OpalICEMediaTransport(class
PString const &)" (??0OpalICEMediaTransport@@QAE@ABVPString@@@Z) referenced
in function "protected: virtual class OpalMediaTransport * __thiscall
OpalRTPSession::CreateMediaTransport(class PString const &)"
(?CreateMediaTransport@OpalRTPSession@@MAEPAVOpalMediaTransport@@ABVPString@
@@Z)
1>..\..\lib\opald.dll : fatal error LNK1120: 2 unresolved externals
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:02.59
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

2. How can I solve these build problems?

obs: I'm not disabling anything on the configurations.

Thanks, Nahra.