[ant-contrib - Help] RE: cc calls cl twice when used from msvc

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https://sourceforge.net/forum/message.php?msg_id=4877854
By: carnold

The preliminary calls to cl and link are to determine what version of cl and
link are being used so it can be compared against the version info that is stored
in the history.  Unfortunately, the Microsoft tools do not (or at least did
not) have a command switch to output the version info and then exit.  "cl /?"
will not generate an error, but it will paginate the output which will cause
cpptasks to stall, so the workaround was to use "cl /bogus" which causes the
version to be output before the unrecognized option caused the compiler to exit.

When cpptasks was written it was very common to have multiple versions of a
single compiler around and you did not want to end up with a build directory
with a object files from a mix of compilers.  If you switch what compiler was
on the path between invocations.

If you are willing to hack cpptasks, the easiest way to suppress the version
check is to modify AbstractProcessor.getIndentifer(String[], String) so that
it just returns the fallback parameter instead of invoking the command.






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