Building shared library with static components

blackdiamond

I have two algorithms that i am developing into dlls. They use some common code and so I am building a static library that both dll can use. When I compile the algorithm I get a bunch of LNK2019: unresolved external symbol errors. Also get some LNK2001: unresolved external symbol errors as well.

My pro files are set up in such a way that they use pri files to allow certain settings.

the static shared or common pro file is:

@include(../options.pri)
TEMPLATE = lib
CONFIG += static

INCLUDEPATH += .
DEPENDPATH += $$INCLUDEPATH

SOURCES +=
*.cpp files\

HEADERS +=
*.h files...@

My algorithm code pro files is :

@include(../options.pri)

QT -= gui

TARGET = StaticAlgorithm
TEMPLATE = lib
CONFIG += shared

include(../common/includeme.pri)

INCLUDEPATH += .

DEPENDPATH += $$INCLUDEPATH

DEFINES += STATICALGORITHM_LIBRARY

SOURCES += *.cpp files\

HEADERS += *.h files\

unix:!symbian {
maemo5 {
target.path = /opt/usr/lib
} else {
target.path = /usr/lib
}
INSTALLS += target
}@

My 3 pri files are the following:
options.pri
@CONFIG -= debug
CONFIG += release

CONFIG += silent

DEFINES += USING_QT

UI_DIR = .ui
MOC_DIR = .moc

win32 {

QMAKE_CXXFLAGS += /MP

QMAKE_CXXFLAGS += -D_SCL_SECURE_NO_WARNINGS

} else {

}

exists( $$PWD/options.user ) {
include( $$PWD/options.user )
}

OBJECTS_DIR = .obj/release
debug { OBJECTS_DIR = .obj/debug }

exists($$QMAKE_LIBDIR_QT/libQtGui.a) {
DEFINES += QT_STATIC_LIB
} else {
DEFINES += QT_SHARED_LIB
}
@

includeme.pri
@LIB_NAME=common
LIB_DIR=$$PWD

include($$PWD/../PriFiles/includeme.template.pri)@

template
@INCLUDEPATH += $$LIB_DIR
DEPENDPATH += $$LIB_DIR

If an app is including this file (versus another lib),

add the lib path for them:

contains(TEMPLATE, app) {

LIB_BUILD_DIR=
win32 {
    LIB_BUILD_DIR=/release
    debug {
        LIB_BUILD_DIR=/debug
    }
}

QMAKE_LIBDIR += $$LIB_DIR$$LIB_BUILD_DIR

win32 {
    PRE_TARGETDEPS += $$LIB_DIR$$LIB_BUILD_DIR/$${LIB_NAME}.lib
    LIBS           += $$LIB_DIR$$LIB_BUILD_DIR/$${LIB_NAME}.lib
} else {
    PRE_TARGETDEPS += $$LIB_DIR$$LIB_BUILD_DIR/lib$${LIB_NAME}.a
    LIBS += -l$${LIB_NAME}
}

}@

When I build the algorithm as a static library it compiles fine, but as soon as I try to make it a shared library I get the errors.