Hello, This is an update on my previous email about the compilation of LLVM on Mingw/Cygwin (i.e. compiling in a Cygwin environment a version of LLVM that does not depend on the Cygwin DLL). Thanks to recent changes in the svn, such a build is now as simple as: ./configure --build=i686-pc-mingw32 CC="gcc -mno-cygwin" CXX="g++ -mno-cygwin" ac_cv_lib_dl_dlopen=no (and then, just "make" as usual) Alain