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Dum_spiro_spero2016-03-29 23:42:02
Fortran
Dum_spiro_spero, 2016-03-29 23:42:02

How to connect the LAPACK library to Fortran on MacOS X?

Good day!
There is a Fortran 90 program that uses the LAPACK linear algebra library. The program compiles and runs normally in Ubuntu. Now you need to run it on Mac OS X (version 10.11.4). I'm using the gfortran compiler installed via homebrew, the lapack library is in the /usr/local/lib/ directory. When I try to compile the code, I get the following error:
gfortran my_prog.f90 -L/usr/local/lib/ -llapack
Undefined symbols for architecture x86_64:
"_daxpy_", referenced from:
_zggbal_ in liblapack.a(zggbal.o)
.. .
"_ztrmv_", referenced from:
_zlarft_ in liblapack.a(zlarft.o)
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status An
internet search suggests that the error is due to a library reference. When I compile the program without writing the path to the library, the error disappears. Also, the error does not appear if you use framework accelerate.
x86-64 library architecture
lipo -info *.a
input file libfftw3.a is not a fat file
input file liblapack.a is not a fat file
Non-fat file: libfftw3.a is architecture: x86_64
Non-fat file: liblapack. a is architecture: x86_64
The error occurs not only when using LAPACK, but also when trying to connect the FFTW library.
Please, give me some idea to solve the problem.

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