%general-entities; ]> Binutils cross tools It is important that Binutils be the first package compiled because both Glibc and GCC perform various tests on the available linker and assembler to determine which of their own features to enable. To make sure that the proper syntax is used for a couple of tools, apply the following patch: patch -Np1 -i ../&binutils-posix-patch; The Binutils documentation recommends building Binutils outside of the source directory in a dedicated build directory: mkdir -v ../binutils-build cd ../binutils-build Prepare Binutils for compilation: ../binutils-&binutils-version;/configure --prefix=${CLFS}/cross-tools \ --host=${CLFS_HOST} --target=${CLFS_TARGET} --with-sysroot=${CLFS} \ --disable-nls --enable-shared --disable-multilib --prefix=${CLFS}/cross-tools This tells the configure script to prepare to install the package in the ${CLFS}/cross-tools directory. --host=${CLFS_HOST} When used with --target, this creates a cross-architecture executable that creates files for ${CLFS_TARGET} but runs on ${CLFS_HOST}. --target=${CLFS_TARGET} When used with --host, this creates a cross-architecture executable that creates files for ${CLFS_TARGET} but runs on ${CLFS_HOST}. --with-sysroot=${CLFS} This tells configure that ${CLFS} is going to be the root of our system. It will now use the specified sysroot, ${CLFS}, as a prefix of the default search paths. --disable-nls This disables internationalization as i18n is not needed for the cross-compile tools. --enable-shared Enable the creation of the shared libraries. --disable-multilib This option disables the building of a multilib capable binutils. Compile the package: make configure-host make configure-host This checks the host environment and makes sure all the necessary tools are available to compile Binutils. Install the package: make install Copy the libiberty.h file to ${CLFS}/usr/include directory: cp -v ../binutils-&binutils-version;/include/libiberty.h ${CLFS}/usr/include Installed programs Installed libraries addr2line, ar, as, c++filt, gprof, ld, nm, objcopy, objdump, ranlib, readelf, size, strings, and strip libiberty.a, libbfd.[a,so], and libopcodes.[a,so] Short Descriptions addr2line Translates program addresses to file names and line numbers; given an address and the name of an executable, it uses the debugging information in the executable to determine which source file and line number are associated with the address addr2line ar Creates, modifies, and extracts from archives ar as An assembler that assembles the output of gcc into object files as c++filt Used by the linker to de-mangle C++ and Java symbols and to keep overloaded functions from clashing c++filt gprof Displays call graph profile data gprof ld A linker that combines a number of object and archive files into a single file, relocating their data and tying up symbol references ld nm Lists the symbols occurring in a given object file nm objdump Displays information about the given object file, with options controlling the particular information to display; the information shown is useful to programmers who are working on the compilation tools objdump ranlib Generates an index of the contents of an archive and stores it in the archive; the index lists all of the symbols defined by archive members that are relocatable object files ranlib readelf Displays information about ELF type binaries readelf size Lists the section sizes and the total size for the given object files size strings Outputs, for each given file, the sequences of printable characters that are of at least the specified length (defaulting to four); for object files, it prints, by default, only the strings from the initializing and loading sections while for other types of files, it scans the entire file strings strip Discards symbols from object files strip libiberty Contains routines used by various GNU programs, including getopt, obstack, strerror, strtol, and strtoul libiberty libbfd The Binary File Descriptor library libbfd libopcodes A library for dealing with opcodes—the readable text versions of instructions for the processor; it is used for building utilities like objdump. libopcodes