Does wx code auto-include .libs?

JohnD · Post by **JohnD** » Wed Feb 09, 2011 7:48 pm

In a new project I am getting a linker error "cannot open file 'wxbase28ud_net.lib'" but I haven't got this particular LIB in my project settings. Does wx automatically try to include libs through imports in the source?

JohnD · Post by **JohnD** » Wed Feb 09, 2011 8:34 pm

Also why do I need so many libs? I added this line:

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#include <wx/app.h>

And so far I'm up to 12 .libs I have had to add. If they're all essential, why not just one big lib? Or is this a sign I should have some preprocessor #define set up?

evstevemd · Post by **evstevemd** » Wed Feb 09, 2011 8:51 pm

JohnD wrote:Also why do I need so many libs? I added this line:
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#include <wx/app.h>
And so far I'm up to 12 .libs I have had to add. If they're all essential, why not just one big lib? Or is this a sign I should have some preprocessor #define set up?

If you need few libs then build a monolithic build
http://wiki.wxwidgets.org/Microsoft_Vis ... B%2B_Guide

JohnD · Post by **JohnD** » Wed Feb 09, 2011 8:59 pm

Well I am not doing ANY wx code yet, but every time I add one .lib and build, I get an error another one is missing - even the jpeg libs are being wanted but I have no idea why. Where are all the imports for those libs coming from?

evstevemd · Post by **evstevemd** » Wed Feb 09, 2011 9:04 pm

JohnD wrote:Well I am not doing ANY wx code yet, but every time I add one .lib and build, I get an error another one is missing - even the jpeg libs are being wanted but I have no idea why. Where are all the imports for those libs coming from?

What is your platform? Which IDE do you use?
I would recommend CodeLite

JohnD · Post by **JohnD** » Wed Feb 09, 2011 9:18 pm

Win7, VS2008. Used wx in several projects nicely, for some reason it's going a bit loopy.

Are there #defines I should be putting in any wx project to control it?

evstevemd · Post by **evstevemd** » Wed Feb 09, 2011 9:24 pm

JohnD wrote:Win7, VS2008. Used wx in several projects nicely, for some reason it's going a bit loopy.

Are there #defines I should be putting in any wx project to control it?

and how do you build your wxWidgets?
If you build non monolithic you will have to add a lot of library and some library must come before another, in order. I would advice to make a monolithic build or you will have to learn which library comes first.

I had such problem years ago when I was learning C::B and few months ago when I forgot --enable-monolithic

JohnD · Post by **JohnD** » Wed Feb 09, 2011 9:34 pm

The link you posted doesn't talk about monolithic builds, I've never heard of this. Not run into problems before, I can't see what my current project does differently to an old one.

evstevemd · Post by **evstevemd** » Wed Feb 09, 2011 9:42 pm

from wxWiki (the same link above)

Building Single Configurations

Build all libraries you need one by one, in the following order:

wxjpeg,
wxpng,
wxtiff,
wxzlib,
wxregex,
wxexpat,
base,
net,
odbc,
core,
gl,
html,
xml,
media,
qa,
adv,
dbgrid,
xrc,
aui,
richtext

Check your file : "wxWidgets-X.Y.Z\INSTALL-MSW.txt"

I have never used VC++ and so I cannot be of great help. I will try to help anyway. Here are links that I guess might be helpful
http://wiki.codeblocks.org/index.php?ti ... olkit_2003

http://wiki.wxwidgets.org/Troubleshooti ... crosoft_VC

http://wiki.wxwidgets.org/Compiling_WxW ... _with_MSVC

JohnD · Post by **JohnD** » Wed Feb 09, 2011 9:59 pm

I still can't figure out, how is building my app throwing "can't find wxXXX.lib"? If I don't include the .lib I should just get unresolved symbol errors, how does the compiler even know the library names I need? I searched the wx codebase for ".lib" and didn't find much, it must be in there somewhere.

evstevemd · Post by **evstevemd** » Wed Feb 09, 2011 10:04 pm

JohnD wrote:I still can't figure out, how is building my app throwing "can't find wxXXX.lib"? If I don't include the .lib I should just get unresolved symbol errors, how does the compiler even know the library names I need? I searched the wx codebase for ".lib" and didn't find much, it must be in there somewhere.

It seems your build is non monolithic and there is a library that depends on another which is not included. Compile a monolithic build! Assuming VC++ compiler is in your enviroment path then use:

cd wx_dir/build/msw
nmake -f makefile.vc SHARED=1 MONOLITHIC=1 BUILD=release

JohnD · Post by **JohnD** » Wed Feb 09, 2011 10:26 pm

I'll try although, what's the output of a monolithic build supposed to be?

I have now added all the .libs to my project and now it complains:

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Error	2	error LNK2019: unresolved external symbol "public: void __thiscall wxStringData::Free(void)" (?Free@wxStringData@@QAEXXZ) referenced in function "public: void __thiscall wxStringData::Unlock(void)" (?Unlock@wxStringData@@QAEXXZ)	MPL1.obj

But this seems wrong, this is in the core/base library. Something is fundamentally screwed up - monolithic build was not needed on any other project and they don't force me to have all the .libs.
Which is the correct file(s) to include in a .cpp, to use wx? Maybe I have that wrong or something.

evstevemd · Post by **evstevemd** » Wed Feb 09, 2011 10:29 pm

JohnD wrote: Which is the correct file(s) to include in a .cpp, to use wx? Maybe I have that wrong or something.

How much competent are you with wxWidgets? Each widgets have its include file like

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#include <wx/string.h>

wx header have the basic stuff

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#include <wx/wx.h>

JohnD · Post by **JohnD** » Wed Feb 09, 2011 10:38 pm

I just want to test my app compiles with wx... I'm checking because in Windows API for instance if you naively include individual files it can screw up.

I just include <wx/wx.h> right now, and everything is totally broken. Every other wx project I've done, I just add a few core libs and it works.

evstevemd · Post by **evstevemd** » Wed Feb 09, 2011 10:42 pm

JohnD wrote:I just want to test my app compiles with wx... I'm checking because in Windows API for instance if you naively include individual files it can screw up.

I just include <wx/wx.h> right now, and everything is totally broken. Every other wx project I've done, I just add a few core libs and it works.

Try codes in tutorial below and see if it works
http://zetcode.com/tutorials/wxwidgetstutorial/