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Problem Linking Gcc : A new wxwidget project
cyberkoa:
I am new to wxwidget and development on framework and gcc.
I try to create a new project under code block using the Menu > Project New Project , I select wxwidget program with static library and separate app and frame source code.
I try to compile without touching any code , it failed. I add it the wxwidget's include path in the compiler , and it successfully compiled.
But , the linking process fail.
The error msg is
mingw32-g++.exe -L"C:\\MinGW\\lib" -o "C:\\gui\\wxWindows.exe" -L"C:\\MinGW\\lib" ".objs\\main.o" ".objs\\app.o" -lstdc++ -lgcc -lgdi32 -lcomdlg32 -lodbc32 -lwsock32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lctl3d32 -ladvapi32 -lopengl32 -lglu32 -lole32 -loleaut32 -luuid -lwxmsw242 -mwindows
C:\MinGW\bin\..\lib\gcc-lib\mingw32\3.2.3\..\..\..\..\mingw32\bin\ld.exe: cannot find -lwxmsw242
Process terminated with status 1 (0 minutes, 0 seconds)
0 errors, 0 warnings
and later I found the wxmsw242.dll under CodeBlock's program path , I added the CodeBlock's program path in the Link path , but now it give me another error.
Project : wxWindows application
Compiler : GNU GCC Compiler (called directly)
Directory : C:\gui\
--------------------------------------------------------------------------------
mingw32-g++.exe -L"C:\\MinGW\\lib" -L"C:\\Program Files\\CodeBlocks" -o "C:\\gui\\wxWindows.exe" -L"C:\\MinGW\\lib" -L"C:\\Program Files\\CodeBlocks" ".objs\\main.o" ".objs\\app.o" -lstdc++ -lgcc -lgdi32 -lcomdlg32 -lodbc32 -lwsock32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lctl3d32 -ladvapi32 -lopengl32 -lglu32 -lole32 -loleaut32 -luuid -lwxmsw242 -mwindows
Info: resolving _wxFrameNameStr by linking to __imp__wxFrameNameStr (auto-import)
C:\\MinGW\\lib/libmingw32.a(main.o)(.text+0x97):main.c: undefined reference to `WinMain@16'
Info: resolving _wxDefaultSize by linking to __imp__wxDefaultSize (auto-import)
Info: resolving _wxDefaultPosition by linking to __imp__wxDefaultPosition (auto-import)
Info: resolving _wxEVT_COMMAND_MENU_SELECTED by linking to __imp__wxEVT_COMMAND_MENU_SELECTED (auto-import)
Info: resolving _wxEVT_NULL by linking to __imp__wxEVT_NULL (auto-import)
Info: resolving __ZN7wxFrame15sm_classwxFrameE by linking to __imp___ZN7wxFrame15sm_classwxFrameE (auto-import)
Info: resolving __ZN6wxMenu14sm_classwxMenuE by linking to __imp___ZN6wxMenu14sm_classwxMenuE (auto-import)
Info: resolving _wxEmptyString by linking to __imp__wxEmptyString (auto-import)
Info: resolving __ZN12wxEvtHandler20sm_classwxEvtHandlerE by linking to __imp___ZN12wxEvtHandler20sm_classwxEvtHandlerE (auto-import)
Info: resolving __ZN8wxObject16sm_classwxObjectE by linking to __imp___ZN8wxObject16sm_classwxObjectE (auto-import)
Info: resolving _wxTheApp by linking to __imp__wxTheApp (auto-import)
Info: resolving _wxTopLevelWindows by linking to __imp__wxTopLevelWindows (auto-import)
Info: resolving _wxNullIcon by linking to __imp__wxNullIcon (auto-import)
Info: resolving __ZN5wxApp13sm_classwxAppE by linking to __imp___ZN5wxApp13sm_classwxAppE (auto-import)
Info: resolving __ZN9wxAppBase11m_appInitFnE by linking to __imp___ZN9wxAppBase11m_appInitFnE (auto-import)
Info: resolving __ZN6wxIcon14sm_classwxIconE by linking to __imp___ZN6wxIcon14sm_classwxIconE (auto-import)
Info: resolving __ZN11wxGDIObject19sm_classwxGDIObjectE by linking to __imp___ZN11wxGDIObject19sm_classwxGDIObjectE (auto-import)
Process terminated with status 1 (0 minutes, 1 seconds)
1 errors, 0 warnings
This time I don't know what had happened .
Anybody can help me ?
My platform : Windows 2000 Professinal
wx-widgets2.4.2
Anonymous:
Later I have tried to create a new wx-widget again , but this time I use wxwinget DLL instead of static library.
I manage to compile and link the program but when I run , it shows me that DLL not found. I then copied the wxmsw242.dll to the program path.
and run the program . But this time , a windows error shows (like those messege shown whenever a program goes hair-wire).
I have tried my best , please help me , thanks.
I do not want to see my adventure to wxwidget stops here ...
mandrav:
Hi,
you need to have the wxWidgets development libraries and header files. I assume you don't, because you try to link with the dll. You have to link with a static library (in this case libwxmsw242.a).
You should download and build wxWidgets yourself. This will create the necessary files needed to build wxWidgets applications.
Maybe I 'll write a small article in the wiki about this process...
Don't give up :)
Yiannis.
Anonymous:
Thanks mandrav. I won't give up so easy :D
I have the wxWidgets development libraries and header files, they are under c:\wxWindows-2.4.2 . However, I do not build them myself , I downloaded the setup files and install , it should ok right ?
I try to link with DLL because from the following error message
C:\MinGW\bin\..\lib\gcc-lib\mingw32\3.2.3\..\..\..\..\mingw32\bin\ld.exe: cannot find -lwxmsw242
I try to Find file with named "wxmsw242" and I can only get wxmsw242.dll .
The file you mentioned "libwxmsw242.a" is not exist , but I found that it there are 2 files named "libwxmsw.a" under c:\wxWindows-2.4.2\lib\release and c:\wxWindows-2.4.2\lib\debug respectively.
I believe this is the static library you mentioned. Therefore, I have tried a series of effort.
1. I try to add c:\wxWindows-2.4.2\lib\release in my Link Dirs .
I try to link again , but the same message prompt.
2. I renamed the libwxmsw.a to wxmsw242.a , and try to link again.
Same problem.
3. I renamed the libwxmsw.a to wxmsw242 , and try to link again.
Same problem.
4. I renamed the libwxmsw.a to libwxmsw242.a , and try to link again.
Same problem.
5. I copy the libwxmsw.a to C:\WINNT , and repeat the rename and link steps , still cannot solve the problem.
Now , I cannot think of other way .
My compiler Dirs setting is
C:\MinGW\include
c:\wxWindows-2.4.2\include
My Linker dirs setting is
C:\MinGW\lib
C:\wxWindows-2.4.2\lib\release
Any settings I have left out ?
I have tested a few IDE for wx-widget and finally I choose Code::Block , because it is fast , stable and configurable . I believe after solving this problem , I will start to step into the open source development environment that I have dreamt for a few years.
--- Quote ---You should download and build wxWidgets yourself. This will create the necessary files needed to build wxWidgets applications.
Maybe I 'll write a small article in the wiki about this process...
--- End quote ---
After I solved this problem , I shall help to write a small article to help those who cannot make a new wxwidget project also :D
mandrav:
--- Quote ---The file you mentioned "libwxmsw242.a" is not exist , but I found that it there are 2 files named "libwxmsw.a" under c:\wxWindows-2.4.2\lib\release and c:\wxWindows-2.4.2\lib\debug respectively.
--- End quote ---
Add "c:\wxWindows-2.4.2\lib\release" to your linker dirs (or the debug version, whichever you prefer). Then, in the link libraries, edit the "wxmsw242" library and change it to "wxmsw".
That's all that's needed.
HTH,
Yiannis.
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