I wrote a C file (template.c) that uses the MKL Intel library (which I've already installed). I'm using this shell script to compile my code (template.c). Assume the C file is minimal - it imports the MKL library and has a main function - that's it.
source /opt/intel/compilers_and_libraries_2019.5.281/mac/mkl/bin/mklvars.sh intel64
gcc-9 -fopenmp -m64 -I${MKLROOT}/include -c template.c
gcc-9 -L${MKLROOT}/lib -Wl,--no-as-needed -lmkl_intel_lp64 -lmkl_gnu_thread -lmkl_core -lgomp -lpthread -lm -ldl template.o -o template
./template
However, I'm getting the following error on Mac (Intel 64-bit processor):
ld: unknown option: --no-as-needed
Any hints on why this may be happening? I'm using Homebrew's latest GCC version.
The first line of the script sources the environmental variables such as $MKLROOT which are used by the script. After that, it should create an object file and eventually run the executable called template.
Please be sure that you have used the recommended compiler options for the selected interface layer.
Caution: linking Intel(R) MKL libraries with your objects compiled for different interface layer may lead to run-time errors.
For reference go through the below link:
Intel MKL Link Line Advisor https://software.intel.com/en-us/articles/intel-mkl-link-line-advisor