Reputation: 2586
I'm getting undefined reference when I build an application in Windows witn mingw32 (it does not happen in Linux). The application is divided in two parts:
1- A set of designer plugins with the PRO like:
QT += core gui sql
CONFIG += designer plugin debug_and_release
TARGET = $$qtLibraryTarget(impwidgetsplugin)
TEMPLATE = lib
This generates the files: libimpwidgetsplugin.a and impwidgetsplugin.dll in c:\ilri\crossimpact\
2- A set of plugins in a library that requires impwidgetsplugin with the PRO like:
QT += core gui sql svg
TARGET = $$qtLibraryTarget(impmainmodules) TEMPLATE = lib CONFIG += plugin
win32:LIBS += -Lc:/ilri/crossimpact -limpwidgetsplugin
....
The problem is that I always get:
./release\plots.o:plots.cpp:(.text+0x13f5): undefined reference to `calcDialog::calcDialog(QWidget*)'
calcDialog is defined in impwidgetsplugin.
i can see the make parameters have that required library limpwidgetsplugin:
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-s -mthreads -Wl -shared -Wl,--out-implib,..\..\..\libimpmainmodules.a -o ..\..\..\impmainmodules.dll object_script.impmainmodules.Release -L"c:\Qt\2010.03\qt\lib" -Lc:/ilri/crossimpact -limpwidgetsplugin -lQtSvg4 -lQtSql4 -lQtGui4 -lQtCore4
Any idea how I need to configure the PRO so it properly links it?
Many thanks for any help. Carlos.
Upvotes: 1
Views: 983
Reputation: 29896
You can have almost the same behavior as linux, by using LIBS+=-Wl,-export-all-symbols
in the plugin .pro file.
But it looks like you didn't export the class properly with the macros Q_DECL_EXPORT
and Q_DECL_IMPORT
.
Upvotes: 1