%general-entities; ]> EGLIBC-&eglibc-version; EGLIBC cross tools Installation of EGLIBC It should be noted that compiling EGLIBC in any way other than the method suggested in this book puts the stability of the system at risk. Disable linking to libgcc_eh: cp -v Makeconfig{,.orig} sed -e 's/-lgcc_eh//g' Makeconfig.orig > Makeconfig The following lines need to be added to config.cache for EGLIBC to support NPTL: cat > config.cache << "EOF" libc_cv_forced_unwind=yes libc_cv_c_cleanup=yes libc_cv_gnu89_inline=yes EOF BUILD_CC="gcc" CC="${CLFS_TARGET}-gcc" \ AR="${CLFS_TARGET}-ar" RANLIB="${CLFS_TARGET}-ranlib" \ ../eglibc-&eglibc-version;/configure --prefix=/tools \ --host=${CLFS_TARGET} --build=${CLFS_HOST} \ --disable-profile --enable-add-ons \ --with-tls --enable-kernel=2.6.0 --with-__thread \ --with-binutils=/cross-tools/bin --with-headers=/tools/include \ --cache-file=config.cache The meaning of the new configure options: BUILD_CC="gcc" This sets EGLIBC to use the current compiler on our system. This is used to create the tools EGLIBC uses during its build. CC="${CLFS_TARGET}-gcc" This forces EGLIBC to use the GCC compiler that we made for our target architecture. AR="${CLFS_TARGET}-ar" This forces EGLIBC to use the ar utility we made for our target architecture. RANLIB="${CLFS_TARGET}-ranlib" This forces EGLIBC to use the ranlib utility we made for our target architecture. --disable-profile This builds the libraries without profiling information. Omit this option if profiling on the temporary tools is necessary. --enable-add-ons This tells EGLIBC to utilize all add-ons that are available. --with-tls This tells EGLIBC to use Thread Local Storage. --enable-kernel=2.6.0 This tells EGLIBC to compile the library with support for 2.6.x Linux kernels. --with-__thread This tells EGLIBC to use use the __thread for libc and libpthread builds. --with-binutils=/cross-tools/bin This tells EGLIBC to use the Binutils that are specific to our target architecture. --with-headers=/tools/include This tells EGLIBC to compile itself against the headers recently installed to the /tools directory, so that it knows exactly what features the kernel has and can optimize itself accordingly. --cache-file=config.cache This tells EGLIBC to utilize a premade cache file. During this stage the following warning might appear:
configure: WARNING: *** These auxiliary programs are missing or *** incompatible versions: msgfmt *** some features will be disabled. *** Check the INSTALL file for required versions.
The missing or incompatible msgfmt program is generally harmless. This msgfmt program is part of the Gettext package which the host distribution should provide. Compile the package: make Install the package: make install <para>Details on this package are located in <xref linkend="contents-eglibc" role="."/></para> </sect2> </sect1>