ExternalProject fails on Windows with strange errors:

Code
4

I found my problem:

The used execute_process() does’nt allow on windows multible commands like:

CONFIGURE_COMMAND
        cd <SOURCE_DIR> && ${PERL_PROGRAM} Configure ...

And for the build and install command, I have to use the BUILD_IN_SOURCE option to prevent:

cd <SOURCE_DIR> && ${MAKE_PROGRAM} ${INSTALL_SW}