%general-entities; ]> Glibc cross tools, headers echo "libc_cv_forced_unwind=yes" > config.cache echo "libc_cv_c_cleanup=yes" >> config.cache echo "libc_cv_mlong_double_128=yes" >> config.cache echo "libc_cv_powerpc64_tls=yes" >> config.cache We need to persuade configure that the host's compiler has all the necessary modern powerpc64 extensions. It will still pass flags such as -mnew-abi which are likely to trigger error messages on a non-ppc host, but the headers can be built. We do this by adding the following lines to config.cache. Note that one of these has three consecutive underscores. echo "libc_cv_mlong_double_128ibm=yes" >> config.cache echo "libc_cv_initfini_array=yes" >>config.cache echo "libc_cv_gcc___thread=yes" >>config.cache