%general-entities; ]> uClibc cross tools Below we are just telling uClibc to use its default configuration. For those for more adventureous, you can use make menuconfig, and do a more custom build for your uClibc installation. The following patch creates a condition in a header so that the struct flock will not be redefined: patch -Np1 -i ../&uclibc-flock_fixes-patch; Create the default configuration: make defconfig ARCH=i386 We will need to edit the configuration file, to make sure everything gets compiled and put into its proper location: cp .config{,.orig} sed -e "/^CROSS_COMPILER_PREFIX/s:=.*:=\"${CLFS_TARGET}-\":" \ -e "/^KERNEL_HEADERS/s:=.*:=\"${CLFS}/usr/include\":" \ -e "/^SHARED_LIB_LOADER_PREFIX/s:=.*:=\"/lib\":" \ -e "/^DEVEL_PREFIX/s:=.*:=\"/usr\":" \ -e "/^RUNTIME_PREFIX/s:=.*:=\"/\":" \ .config.orig > .config We will need to make sure that some settings in uClibc are set so we can utilize all the features of BusyBox: UCLIBC_OPTIONS="DO_C99_MATH UCLIBC_HAS_RPC UCLIBC_HAS_CTYPE_CHECKED UCLIBC_HAS_WCHAR UCLIBC_HAS_HEXADECIMAL_FLOATS LDSO_PRELOAD_FILE_SUPPORT UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE UCLIBC_HAS_PRINTF_M_SPEC UCLIBC_HAS_IPV6 UCLIBC_HAS_GLIBC_CUSTOM_PRINTF UCLIBC_USE_NETLINK UCLIBC_HAS_FTW" for config in $UCLIBC_OPTIONS; do cp .config{,.orig} sed -e "s:# ${config} is not set:${config}=y:" .config.orig > .config done UCLIBC_OPTIONS="UCLIBC_HAS_CTYPE_UNSAFE" for config in $UCLIBC_OPTIONS; do cp .config{,.orig} sed -e "s:${config}=y:# ${config} is not set:" .config.orig > .config done echo "UCLIBC_HAS_FULL_RPC=y" >> .config echo "UCLIBC_HAS_REENTRANT_RPC=y" >> .config We have made some changes to our config, let's make sure that we didn't miss and dependencies: make oldconfig Compile the package: make CC="${CLFS_TARGET}-gcc ${BUILD}" Install the package: make PREFIX=${CLFS} install Installed uClibc To Be Written