%general-entities; ]> Glibc ../glibc-&glibc-version;/configure \ --prefix=/usr \ --disable-profile \ --enable-kernel=&glibc-kernel-version; \ --libexecdir=/usr/lib/glibc \ --enable-obsolete-rpc The nptl/tst-clock2, nptl/tst-attr3, tst/tst-cputimer1, and rt/tst-cpuclock2 tests have been known to fail. The reason is not completely understood, but indications are that minor timing issues can trigger these failures. The math tests, at least on i686, fail in the test-double and test-idouble tests with gcc-&gcc-version; . These two failures in the math tests appear to be harmless. The math tests may also fail on systems where the CPU is not a relatively new genuine Intel or authentic AMD. Certain optimization settings are also known to be a factor here. If you have mounted the CLFS partition with the noatime option, the atime test will fail. As mentioned in , do not use the noatime option while building CLFS. When running on older and slower hardware, some tests can fail because of test timeouts being exceeded. Modifying the make check command to set a TIMEOUTFACTOR is reported to help eliminate these errors (e.g. TIMEOUTFACTOR=16 make -k check). posix/tst-getaddrinfo4 will always fail due to not having a network connection when the test is run.