Hi I installed both the file: //C:/cygwin/var/cache/setup/http%3a%2f%2fcygwin.mirror.constant.com%2f/x86/release/postgresql/postgresql-client/postgresql-client-9.6.2-1.tar.xz and the file file://C:/cygwin/var/cache/setup/http%3a%2f%2fcygwin.mirror.constant.com%2f/x86/release/postgresql/postgresql-devel/postgresql-devel-9.6.2-1.tar.xz but none of these installations provide the libpq-fe.h include. [FrancisANDRE@idefix ~ ]$find /usr/include -name "*libpq-*.*" /usr/include/postgresql/server/libpq/libpq-be.h /usr/include/postgresql/server/libpq/libpq-fs.h How can I get this include? Thank for any pointer. FA