py38-mkl @2019.0: changing install names or rpaths can't be redone ... because larger updated load commands do not fit

[nasyxx (Nasy)]

I'm not sure if it's a whl problem or a ports problem. But I tested directly pip install mkl without problems.

Executing:  cd "/Users/Nasy/.macports/var/macports/build/_Users_Nasy_.macports_macports-ports_python_py-mkl/py38-mkl/work/mkl-2019.0-py2.py3-none-macosx_10_12_intel.macosx_10_12_x86_64" && pip-3.8 install --no-cache-dir --no-dependencies --root /Users/Nasy/.macports/var/macports/build/_Users_Nasy_.macports_macports-ports_python_py-mkl/py38-mkl/work/destroot /Users/Nasy/.macports/var/macports/distfiles/py-mkl/mkl-2019.0-py2.py3-none-macosx_10_12_intel.macosx_10_12_x86_64.whl
dbus[18195]: Dynamic session lookup supported but failed: launchd did not provide a socket path, verify that org.freedesktop.dbus-session.plist is loaded!
dbus[18195]: Dynamic session lookup supported but failed: launchd did not provide a socket path, verify that org.freedesktop.dbus-session.plist is loaded!
Processing /Users/Nasy/.macports/var/macports/distfiles/py-mkl/mkl-2019.0-py2.py3-none-macosx_10_12_intel.macosx_10_12_x86_64.whl
Installing collected packages: mkl
Successfully installed mkl-2019.0
error: /Library/Developer/CommandLineTools/usr/bin/install_name_tool: changing install names or rpaths can't be redone for: /Users/Nasy/.macports/var/macports/build/_Users_Nasy_.macports_macports-ports_python_py-mkl/py38-mkl/work/destroot/Users/Nasy/.macports/Library/Frameworks/Python.framework/Versions/3.8/lib/libmkl_intel_ilp64.dylib (for architecture x86_64) because larger updated load commands do not fit (the program must be relinked, and you may need to use -headerpad or -headerpad_max_install_names)
Command failed: install_name_tool -add_rpath /Users/Nasy/.macports/lib/libomp /Users/Nasy/.macports/var/macports/build/_Users_Nasy_.macports_macports-ports_python_py-mkl/py38-mkl/work/destroot/Users/Nasy/.macports/Library/Frameworks/Python.framework/Versions/3.8/lib/libmkl_intel_ilp64.dylib
Exit code: 1
Error: Failed to destroot py38-mkl: command execution failed

[ryandesign (Ryan Carsten Schmidt)]

changing install names or rpaths can't be redone ... because larger updated load commands do not fit (the program must be relinked, and you may need to use -headerpad or -headerpad_max_install_names

MacPorts puts -headerpad_max_install_names into configure.ldflags automatically specifically so that install_name_tool can be used in this way, but this build isn't making use of MacPorts configure.ldflags (and it probably should be).

I'm not entirely sure where the problem is. I see that the port is disabling the build phase and doing its building and installing together in the destroot phase, which is weird; ports should usually build in the build phase and install in the destroot phase. If fixing that doesn't fix the problem, then I would examine the python 1.0 portgroup. It's possible this problem affects all python modules. I don't see the string configure.ldflags anywhere in the python portgroup, which surprises me. For comparison, I do see configure.cflags and configure.cxxflags used there.

This problem may be affecting you especially, and might not be apparent when we build it, because you're using a custom MacPorts prefix (/Users/Nasy/.macports) that is longer than the default prefix (/opt/local).

[nasyxx (Nasy)]

How about just ignore line 77?

system "install_name_tool -add_rpath ${prefix}/lib ${dlib}"

Since it will only link for libomp, I guess this line is useless. But I'm not sure if it will influence other things or not.