Hello everyone, I know this is an old post but I ran into a similar error using an Apple M1 Mac, in which Duneuro couldn't find the gmp libraries.
I was able to proceed after dowloading gmp with the -x86_64 version of brew (using the native Silicon version of brew did not work due to a different folder structure).
However, a different error ensued:
BST> Plugin duneuro already loaded: /Users/francesco/.brainstorm/plugins/duneuro
DUNEURO> Writing temporary files to: /Users/francesco/.brainstorm/tmp/duneuro_230404_212147
DUNEURO> System call: "/Users/francesco/.brainstorm/plugins/duneuro/bst_duneuro/bin/bst_duneuro_meeg_mac64.app" "/Users/francesco/.brainstorm/tmp/duneuro_230404_212147/duneuro_minifile.mini"
"/Users/francesco/.brainstorm/plugins/duneuro/bst_duneuro/bin/bst_duneuro_meeg_mac64.app" "/Users/francesco/.brainstorm/tmp/duneuro_230404_212147/duneuro_minifile.mini": Illegal instruction
status =
132
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** Error: Error during the DUNEuro computation, see logs in the command window.
***************************************************************************
Any idea about what could be the cause?