I cannot build fetchmail 5.8.14 with NLS on a Linux box (running
Red Hat Linux 6.2).
It seems that the cause is the file "intl/libintl.h" (which is a
symlink to ".././intl/libgettext.h") in the tarball.
This file should not be in the tarball. It should only be created
when and if the included gettext library is used, i.e. on systems
which does not have gettext functions.
When it exists it will be used instead of the system's native
"/usr/include/libintl.h" causing mismatch between the header file
and the gettext function in glibc.
Fetchmail builds fine if I delete "intl/libintl.h" before
compiling.