SOFTWARE REQUIREMENTS Compiling uClibc requires Linux kernel header files. uClibc will be compiled to match the interfaces available in the provided version of the Linux kernel headers. Linux kernel version 2.0, version 2.2, version 2.4 and version 2.6 are known to work. Other kernel versions may work but haven't been tested. Its also helpful to have a working version of GNU binutils, and GNU gcc -- using excessively old versions of these packages can cause very strange errors that are difficult to find and fix. CONFIGURING uClibc: - Users must have a valid configuration file to compile uClibc. Do not skip this step. New configuration options are added in each release, and odd configuration options are sometimes removed. To configure uClibc, you can run: make menuconfig or make config If you have an existing .config file, you can update this file using the make oldconfig command, which will only ask you about new configuration options. Available configuration commands are: "make config" Text based configuration, no menus or colors. "make menuconfig" Text based color menus, radiolists & dialogs. "make oldconfig" Default all questions based on the contents of your existing ./.config file. "make defconfig" Use defaults for all options. "make randconfig" Use random values for all options. "make allyesconfig" Set all values to "yes" for all options. "make allnoconfig" Set all values to "no" for all options. COMPILING uClibc: - uClibc does not have proper dependancy checking (yet) so if you change your uClibc configuration, you must current rebuild the entire library, by first running make clean - Once you have a valid configuration file, just run make to compile uClibc. or if you are cross compiling, you would instead run something like: make CROSS=arm-linux- INSTALLING the uClibc development environment: - As root, if necessary, run something like: make PREFIX= install This will install the uClibc runtime and development system (i.e. all the header files, libraries, etc) into the directories defined within your .config file. USING uClibc: - To compile programs with uClibc you will need a complete toolchain (i.e. binutils, gcc, and uClibc) that was built expressly for use with uClibc. - Native and cross compiling toolchains, as well as makefiles for creating uClibc toolchains, are available from the uClibc website. You may want to check out "buildroot", which is available from the uClibc download area, which provides examples of how to build your own uClibc based system.