Looking at the the gcc-4.2.1 patches for uClibc, I found that the

200-uclibc-locale and 205-uclibc-locale-update patches uses a not 
existing macro
__UCLIBC_HAS_XCLOCALE__ while they should refer to __UCLIBC_HAS_XLOCALE__

Find attached the patches to fix the above mentioned patches

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>