Need help installing IPOPT with Intel MKL

[maddielynklein]

Hello, I'm trying to configure and install IPOPT to use Intel MKL on mac OS X. I have Intel MKL installed in the usual /opt/intel/oneapi/mkl and $MKLROOT is set to /opt/intel/oneapi/mkl/latest. When I run the IPOPT configure script it is successful and it looks like it found the MKL libraries based on these lines of output
configure: pkg-config path is "/usr/local/lib/pkgconfig:/opt/intel/oneapi/mkl/latest/bin/pkgconfig"
checking for function dsyev_ in -lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lm ... yes

However when I run sudo make install it fails at this point claiming it can not find the MKL library
Making install in src/Interfaces
/Library/Developer/CommandLineTools/usr/bin/make install-am
CXXLD libipopt.la
ld: library not found for -lmkl_intel_lp64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [libipopt.la] Error 1
make[1]: *** [install] Error 2
make: *** [install-recursive] Error 1

Any help is greatly appreciated, thanks!

[svigerske]

Probably the library search path in the sudo environment was different from the one of configure, and then it didn't find the MKL lib anymore.
Normally there should be no need to link the Ipopt lib in the make install step, since that should have happened in the make step, but something I see libtool saying that it relinks the lib. Maybe try sudo -E.

[maddielynklein]

That made it work, thanks so much!!