Developer forums (C::B DEVELOPMENT STRICTLY!) > Plugins development

HelloWorld Plugin on Ubuntu 11.04

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oBFusCATed:
Yes, the last g++ command (the one with -shared flag) is calling the linker for you.

hibbity:
Now linking against wxsmithlib and adding linker option '-z defs', result is much more manageable.
Build log:

-------------- Build: default in CustomButton ---------------
g++  -g -I/usr/include/codeblocks -I/usr/include/codeblocks/tinyxml -I/usr/include/codeblocks/scripting/include -I/usr/include/codeblocks/scripting/bindings -I/usr/include/codeblocks/scripting/sqplus -I/usr/include/codeblocks/wxscintilla/include    -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread   -march=i586   -I/usr/local/include/wx-2.8 -I/usr/include/wxsmith/contrib/include -Iwxthings/include -I/usr/local/include/wx-2.8 -I/usr/include/wxsmith/contrib/include -Iwxthings/include  -c /home/guest/custom_widgets/wxlinux/wxthings/custombutton.cpp -o .objs/custombutton.o
g++  -g -I/usr/include/codeblocks -I/usr/include/codeblocks/tinyxml -I/usr/include/codeblocks/scripting/include -I/usr/include/codeblocks/scripting/bindings -I/usr/include/codeblocks/scripting/sqplus -I/usr/include/codeblocks/wxscintilla/include    -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread   -march=i586   -I/usr/local/include/wx-2.8 -I/usr/include/wxsmith/contrib/include -Iwxthings/include -I/usr/local/include/wx-2.8 -I/usr/include/wxsmith/contrib/include -Iwxthings/include  -c /home/guest/custom_widgets/wxlinux/wxthings/wxscustombutton.cpp -o .objs/wxscustombutton.o
g++ -shared  .objs/custombutton.o .objs/wxscustombutton.o   -o custombutton.so -z defs -lcodeblocks    -pthread -Wl,-Bsymbolic-functions  -lwx_gtk2u_richtext-2.8 -lwx_gtk2u_aui-2.8 -lwx_gtk2u_xrc-2.8 -lwx_gtk2u_qa-2.8 -lwx_gtk2u_html-2.8 -lwx_gtk2u_adv-2.8 -lwx_gtk2u_core-2.8 -lwx_baseu_xml-2.8 -lwx_baseu_net-2.8 -lwx_baseu-2.8   -z defs  -lwxsmithlib -lwxsmithlib
.objs/wxscustombutton.o: In function `wxsCustomButton::OnBuildPreview(wxWindow*, long)':
/home/guest/custom_widgets/wxlinux/wxthings/wxscustombutton.cpp:202: undefined reference to `wxCustomButton::CreateBitmapDisabled(wxBitmap const&) const'
/home/guest/custom_widgets/wxlinux/wxthings/wxscustombutton.cpp:207: undefined reference to `wxCustomButton::SetMargins(wxSize const&, bool)'
/home/guest/custom_widgets/wxlinux/wxthings/wxscustombutton.cpp:212: undefined reference to `wxCustomButton::SetLabelMargin(wxSize const&, bool)'
/home/guest/custom_widgets/wxlinux/wxthings/wxscustombutton.cpp:217: undefined reference to `wxCustomButton::SetBitmapMargin(wxSize const&, bool)'
.objs/wxscustombutton.o: In function `wxCustomButton':
/home/guest/custom_widgets/wxlinux/wxthings/wxthings/include/wx/things/toggle.h:143: undefined reference to `vtable for wxCustomButton'
/home/guest/custom_widgets/wxlinux/wxthings/wxthings/include/wx/things/toggle.h:145: undefined reference to `wxCustomButton::Init()'
/home/guest/custom_widgets/wxlinux/wxthings/wxthings/include/wx/things/toggle.h:146: undefined reference to `wxCustomButton::Create(wxWindow*, int, wxString const&, wxBitmap const&, wxPoint const&, wxSize const&, long, wxValidator const&, wxString const&)'
collect2: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 2 seconds)
7 errors, 0 warnings

It seems that ../wxthings/wxthings/.libs/libwxcustombutton.so is not being linked in.
 

hibbity:
Cool, now it compiles, links and installs.

For the final steps, I added  wxthings/.libs to the Search directories -->Linker
and added libwxcustombutton to the Linker settings-->Link libraries.

Thanks for the help, much appreciated.   :)

hibbity:
Discovered that placing a CustomButton widget into a project, and linking against libwxscustombutton causes problems -- the app does not exit properly, and when it does, a return code of "-1" is given.

Too bad, because now I'm back where I started -- trying to find a widget plugin that is simple, and "just works".

hibbity:
Custom control widgets are made available in wxSmith as shared library plugins. 

Why shared?  Is it not possible to static link a plugin into a GUI application?  It would make debugging easier, for one.

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