CI: remove obsolete exporting of SHELLOPTS = "igncr" in windows-cygwin-cmake-build
This is no longer necessary since crlf is now replaced with lf in all
text files in the repository before Cygwin starts.
Exporting SHELLOPTS has the negative side effect that other flags such
as -e, -u and -x are inherited by child processes which could cause
invoked bash scripts to fail (because of -u) and abort (because of -e)
unintentionally. While this does not happen in the current Cygwin
CMake build, this has been observed in Cygwin autotools builds that
will be introduced in an upcoming MR. This commit ensures that this
can not occur in the future for CMake builds either.
The -x option is more or less harmless, but causes excessive logging
in invoked scripts. This can be seen in
e.g. https://gitlab.com/graphviz/graphviz/-/jobs/
1593005342.
projects / graphviz / commit