I have build GFortran under Cygwin configuring with:
./configure --prefix=${prefix_dir} \ --enable-languages=c,fortran \ --enable-bootstrap \ --enable-libgomp \ --enable-threads \ --enable-sjlj-exceptions \ --enable-version-specific-runtime-libs \ --enable-nls \ --enable-werror \ --enable-checking=release \ --disable-libmudflap \ --disable-shared \ --disable-win32-registry \ --with-system-zlib \ --without-included-gettext \ --without-x The build gives, a few times, this warning: --------------------------------------------------- ... checking for valgrind.h... no configure: WARNING: decimal float is not supported for this target ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ checking whether make sets $(MAKE)... yes ... --------------------------------------------------- A few months ago this did not happen (same building procedure). So, have you an idea about this ? TIA, Angelo.