page started by [TV] Recently trying out the latest [CVS] version of tcl 8.5, I found the standard distr. doesn't allow a [cygwin] build. That in itself is not disastrous, but I at least would like to use my installed [cygwin] env to build. That should be possible with [mingw], which however is already present in the cygwin distr., usually. The main trick was suggested by [GPS], to make cygwin not use its normal gcc, but in fact the 9as ''(what?)'' I used before: -mno-cygwin option (under bash): export CC="gcc -mno-cygwin" ./configure make A comment on the outcome: I wanted to use the resulting tclsh without installing, which is problematic because it looks for a valid init.tcl . It appears that a '''make shell''' or '''make runtest''' is possible. make test works normally.