If you run into troubles, it is always a good habit to report the following information:

the way build.mrcc was invoked
the output of build.mrcc
compiler version (for example: ifort -V, gfortran -v)
blas/lapack versions
as well as gcc and glibc versions

as well as the value of the relevant environmental variables, such OMP_NUM_THREADS, etc.

This information helps us a lot when figuring out what is going on with your compilation

Compiling on MacOS Sequoia 15.7.1

LEININGER
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1 week 4 days ago #1585 by LEININGER

Compiling on MacOS Sequoia 15.7.1 was created by LEININGER

Dear all,
I tried to compile the latest mrcc on my Macbook and get following error at the linking step.

Undefined symbols for architecture arm64:
"_sched_getcpu", referenced from:
_getcpu_ in cfunc.o

I used build.mrcc GNU and the compilation uses, for instance for ldfzvec

Compiling ldfzvec with options -x f95-cpp-input -ffree-line-length-none -fallow-argument-mismatch -Dgfortran -fdefault-integer-8 -DGNU -DINT64

Googling results in following for the sched_getcpu which seems to be the problem:

13.60.4

Code:

sched_getcpu

Documentation:
man sched_getcpu Gnulib module: —Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

This function exists only on Linux and Cygwin and is therefore missing on most non-glibc platforms: glibc 2.5, macOS 14, FreeBSD 13.0, NetBSD 10.0, OpenBSD 7.5, Minix 3.1.8, AIX 7.1, HP-UX 11.31, Solaris 11.4, Cygwin 2.10.x, mingw, MSVC 14.

Any help appreciated.

Best wishes
Thierry

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i.s.ger
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3 days 19 hours ago #1586 by i.s.ger

Replied by i.s.ger on topic Compiling on MacOS Sequoia 15.7.1

Just delete it. It is not used in MRCC source code.

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Compiling on MacOS Sequoia 15.7.1

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