Attempting to Build a Module in RHEL Returns Error: "FATAL: modpost: GPL-incompatible module <module>.ko uses GPL-only symbol '<symbol_name>'"

Solution Verified - Updated -

Issue

  • Attempting to build a custom module against a RHEL kernel fails with the error:

    "FATAL: modpost: GPL-incompatible module <module>.ko uses GPL-only symbol '<symbol_name>'"

Environment

  • Red Hat Enterprise Linux, version 8
  • Red Hat Enterprise Linux, version 7
  • Red Hat Enterprise Linux, version 6
  • Red Hat Enterprise Linux, version 5
  • Red Hat Enterprise Linux, version 4

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