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- 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=<some path> 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.
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