LINK1140 error with the vcpkg UMFPACK

husseinahazime

Hello friends,

I'm trying to add an external library a desktop QT project I'm working on. I installed the UMFPACK package using the cmd after pulling the vcpkg from git. I added the library via the library manager the following code was added to the .pro file

win32:CONFIG(release, debug|release): LIBS += -LC:/vcpkg-master/installed/x64-windows/lib/ -llibumfpack
else:win32:CONFIG(debug, debug|release): LIBS += -LC:/vcpkg-master/installed/x64-windows/lib/ -llibumfpackd
else:unix: LIBS += -LC:/vcpkg-master/installed/x64-windows/lib/ -llibumfpack

INCLUDEPATH += C:/vcpkg-master/installed/x64-windows/include/suitesparse
DEPENDPATH += C:/vcpkg-master/installed/x64-windows/include/suitesparse

After cleaning the project and run qmake and then build the following error is displayed :

:-1: error: LNK1104: cannot open file 'libumfpackd.lib'

I'm using the following compiler settings Image settings - follow link

what would be causing this error ?

Charlie_Hdz

Can you display the whole .pro?

Had you tried with LIBS?

husseinahazime

This is the whole .pro file , no i didn't try LIBS? what do you mean with LIBS? trying to simulate the libraries outside QT ?

#-------------------------------------------------
#
# Project created by QtCreator 2017-09-17T12:47:31
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets printsupport

TARGET = GUIv1-1
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0


SOURCES += \
        main.cpp \
        mainwindow.cpp \
        qcustomplot.cpp \
    savesettings.cpp \
    functions_solver.cpp \
    mesh.cpp \
    util.cpp \
    borderlayout.cpp


HEADERS += \
        mainwindow.h \
    qcustomplot.h \
    savesettings.h \
    functions_solver.h \
    mesh.h \
    util.h \
    borderlayout.h


FORMS += \
        mainwindow.ui \
    temp.ui




win32:CONFIG(release, debug|release): LIBS += -LC:/vcpkg-master/installed/x64-windows/lib/ -llibumfpack
else:win32:CONFIG(debug, debug|release): LIBS += -LC:/vcpkg-master/installed/x64-windows/lib/ -llibumfpackd
else:unix: LIBS += -LC:/vcpkg-master/installed/x64-windows/lib/ -llibumfpack

INCLUDEPATH += C:/vcpkg-master/installed/x64-windows/include/suitesparse
DEPENDPATH += C:/vcpkg-master/installed/x64-windows/include/suitesparse

Charlie_Hdz

Which one is your platform?

SGaist

Hi and welcome to devnet,

Do you really have a file named libumfpack.lib in the folder you are indicating ?

husseinahazime

@SGaist Hello , yes i'm sure that the file exist in the directory i pointed to.

husseinahazime

@Charlie_Hdz I have a 64bit machine, however, I was checking now on the QT version installed and I noticed that my qt creator is "Based on Qt 5.9.1 (MSVC 2015, 32 bit)" based on 32bot MSVC and the library I was trying to link to was built for 64bit. however, inside QT I had MSVC2015 64bit compiler. can this be the problem ? should QT be 64bit also?

jsulm

@husseinahazime It doesn't matter whether QtCreator is 32bit or 64bit. What matters is whether you're building a 32bit or 64bit application. What exact Qt version did you install? Also remove lib prefix from

-llibumfpack

should be

-lumfpack

husseinahazime

@jsulm I am using Qt 5.9.1 (MSVC 2015, 32 bit).

i reviewed the library name and it says libumfpack.lib therefore I used
-llibumfpack.

do you have any idea why I'm facing such a problem?

SGaist

The lib prefix should be dropped like @jsulm suggested.