Autoconf: Better Unicode Python support in makedep #370
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The
open()
commands inmakedep
for reading Fortran source now includes anerrors=
argument for catching bytes outside of the file character set. Unknown characters are replaced with the "unknown" character (usually �) rather than raising an error.This avoids problems with Unicode characters and older Pythons which do not support them, as well as characters from legacy encodings which can cause errors in Unicode.
Substitution does not break any behavior, since Unicode is only permitted inside of comment blocks and strings.
This fixes several errors which were silent in
.testing
but were observed by some users which using autoconf to build their own executables.