Hi,

It seems I'm having an issue with running qwt under Qt Creator on a MAC. It works fine on Windows and CentOS.

I installed and built qwt on my MAC as per the instructions on the qwt website.

The library is installed in /usr/local/qwt-6.1.5/plugins/designer an the library name is libqwt_designer_plugin.dylib

in the project file I reference this library as I do with any other but for some reason I keep getting the error: library not found -llibrary_designer_plugin, linker command failed with exit code 1 (use -v to see invocation). Here are parts of the project file which references the qwt library.

---------------
QT += core gui
CONFIG += qwt

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = MyAppName
TEMPLATE = app

Sources += \
whole bunch of sources

HEADERS += \
whole bunch of .h files

FORMS += \
mainwindow.ui

QWT_LIB_PATH = /usr/local/qwt-6.1.5/plugins/designer
QWT_SRC_PATH = /Users/Myname/Qt/qwt-6.1.5
PLATFORM = macos1014-clang100
QWT_LIB = libqwt_designer_plugin


INCLUDEPATH += Bunch of sources \
$${QWT_SRC_PATH}/src

LIBS += -L$$(bunch of other libs path} \
-lsomeLibs \
-L$${QWT_LIB_PATH} \
-l$${QWT_LIB}


---------------------------
Not sure what I can be doing wrong, this should be straight forward. Any help would be appreciated.
I'm running on Catalina 10.15.7

Thanks in advance!