On 2020-01-02 14:12, David Sugar wrote:
[...] busybox provides core tools. This leads to very small boot images [...]
Re. the size of core tools, i.e., busybox vs. GNU coreutils: You can decrease the size of a GNU coreutils installation by: - removing documentation (questionable): 276K /usr/share/doc/packages/coreutils 224K /usr/share/info/coreutils.info.gz 424K /usr/share/man/man1/* - building without NLS support (via 'configure --disable-nls'): $ du -shx cu-regular/inst* 45M cu-regular/inst 36M cu-regular/inst-no-nls - by building as a single 'coreutils' binary (like busybox) with the 'configure' option "--enable-single-binary=shebangs|symlinks": $ ./configure --help ... --enable-single-binary=shebangs|symlinks Compile all the tools in a single binary, reducing the overall size. When compiled this way, shebangs (default when enabled) or symlinks are installed for each tool that points to the single binary. That option reduces the size of a GNU coreutils installation (including all documentation, no RPM package info) from 45M to 18M: # Regular GNU coreutils installation: du -hs cu-regular/inst 45M cu-regular/inst # GNU coreutils installation built with '--enable-single-binary=shebangs': du -hs cu-shebang/inst 18M cu-shebang/inst # GNU coreutils installation built with '--enable-single-binary=symlinks': du -hs cu-symlink/inst 18M cu-symlink/inst Combined with the above --disable-nls, this makes tiny ~8M (still including the man pages and the info page!): $ du -hs cu-symlink/inst-no-nls cu-shebang/inst-no-nls 7.9M cu-symlink/inst-no-nls 8.3M cu-shebang/inst-no-nls The single-binary 'coreutils' executable takes 6.5M of that. Of course, this still includes the full GNU coreutils functionality we're used to. ;-) Have a nice day, Berny -- To unsubscribe, e-mail: opensuse-buildservice+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-buildservice+owner@opensuse.org