Armadillo QT Editor Windows 7

[helpPls]

Hi everyone,

I keep getting the following error, among others:

C:\Users\Phil\Desktop\TITO\Armadillo\armadillo-9.400.3\include\armadillo_bits\wrapper_blas.hpp:189: error: undefined reference to `ddot'

I have my pro file as follows:

TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt

SOURCES +=
main.cpp

#INCLUDEPATH += C:\armadillo-9.400.3\include \

#LIBS += \

-LC:\armadillo-9.400.3\lib_win64\

-llibblas32 \

-lliblapack32

INCLUDEPATH += C:\Users\Phil\Desktop\TITO\Armadillo\armadillo-9.400.3\include \

LIBS +=
-LC:\Users\Phil\Desktop\TITO\Armadillo\armadillo-9.400.3\examples\lib_win64
-llapack_win64_MT
-lblas_win64_MT

How do I fix this error? Thank you so much!

[aha_1980]

@helpPls

I'm not sure this is the actual problem, but I had such a problem before:

-LC:\armadillo-9.400.3\lib_win64\

1. prefer forward slash / over backslash \ (also in C++ source code)
2. Remove the trailing slash. It can be interpreted as line continuation

To further debug your problem, please find out which library is defining your missing symbol.

Regards

[helpPls]

@aha_1980

Hi! This is the error message I'm getting...

C:\Users\Phil\Desktop\TITO\build-armadilllo_test-Desktop_Qt_5_12_3_MinGW_32_bit-Debug\debug\main.o:-1: In function `ZN4arma4blas3dotIdEET_jPKS2_S4_':

[wrosecrans]

@helpPls What's the whole error message? That just looks like the first line of one.

[helpPls]

@wrosecrans

This isn't the whole thing...

C:\Users\Phil\Desktop\TITO\build-armadilllo_test-Desktop_Qt_5_12_3_MinGW_32_bit-Debug\debug\main.o:-1: In function ZN4arma4blas3dotIdEET_jPKS2_S4_': C:\Users\Phil\Desktop\TITO\Armadillo\armadillo-9.400.3\include\armadillo_bits\wrapper_blas.hpp:189: error: undefined reference to ddot'
C:\Users\Phil\Desktop\TITO\build-armadilllo_test-Desktop_Qt_5_12_3_MinGW_32_bit-Debug\debug\main.o:-1: In function ZN4arma6lapack5getrfIdEEvPiS2_PT_S2_S2_S2_': C:\Users\Phil\Desktop\TITO\Armadillo\armadillo-9.400.3\include\armadillo_bits\wrapper_lapack.hpp:42: error: undefined reference to dgetrf'
C:\Users\Phil\Desktop\TITO\build-armadilllo_test-Desktop_Qt_5_12_3_MinGW_32_bit-Debug\debug\main.o:-1: In function `ZN4arma4blas4gemvIdEEvPKcPKiS5_PKT_S8_S5_S8_S5_S8_PS6_S5_':

[jsulm]

@helpPls Did you do what @aha_1980 suggested?

[helpPls]

@jsulm

You mean, change / to ? Um...So comments are \ now? That didn't seem like a solution so I didn't try it. Should I?

[jsulm]

@helpPls You should use / instead of \ in paths:

INCLUDEPATH += C:/armadillo-9.400.3/include

"So comments are \ now?" - which comments do you mean? \ is an escape character and at the end of a line in pro files it means that the line continues in the next line:

LIBS += -LC:/Users/Phil/Desktop/TITO/Armadillo/armadillo-9.400.3/examples/lib_win64 \
-llapack_win64_MT \
-lblas_win64_MT

[helpPls]

@jsulm

Hi..so my pro file looks like this now. The new error message is at the bottom.

TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt

SOURCES += /
main.cpp

#INCLUDEPATH += C:/armadillo-9.400.3/include

#LIBS += /

-LC:/armadillo-9.400.3/lib_win64/

-llibblas32 /

-lliblapack32

INCLUDEPATH += C:/Users/Phil/Desktop/TITO/Armadillo/armadillo-9.400.3/include

LIBS +=
-LC:/Users/Phil/Desktop/TITO/Armadillo/armadillo-9.400.3/examples/lib_win64
-llapack_win64_MT
-lblas_win64_MT

:-1: error: fatal error: no input files

[jsulm]

@helpPls

TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt

SOURCES += main.cpp

INCLUDEPATH += C:/Users/Phil/Desktop/TITO/Armadillo/armadillo-9.400.3/include

LIBS += -LC:/Users/Phil/Desktop/TITO/Armadillo/armadillo-9.400.3/examples/lib_win64 \
-llapack_win64_MT \
-lblas_win64_MT

[aha_1980]

Hi @helpPls

please adopt your pro file to what @jsulm suggested.

Further:

1. C:/Users/Phil/Desktop/TITO/Armadillo/armadillo-9.400.3/examples/lib_win64 - is it really examples/lib?

2. You are using a MinGW-32-Bit Kit, but give the linker a lib_win64 directory - is that correct?

[helpPls]

@aha_1980

Hi..thank you for trying to help me. I adopted @jsulm's pro file and get the exact same errors. For 1., yes, that's where my files are. For 2., I tried it with MinGW-64 and it doesn't matter. It's all the same. Extremely frustrating. Wow, I just don't know what else to do.

[jsulm]

@helpPls Please post you current pro file and please use the </> tags to encode it as code.
You can also check generated Makefile.
And post the complete compiler/linker output.

[aha_1980]

Hi @helpPls,

and just to add to @jsulm, which files are actually located in the lib_win64 directory? Under Windows, you have linker include files for MSVC and MinGW compiler, and they are not compatible. Also, as already said, 32-bit and 64-bit libraries are also impossible to mix.

Regards