%general-entities; ]> gcc &gcc-version;

&gcc-url;

GCC tools, pass 1 The GCC documentation recommends building GCC outside of the source directory in a dedicated build directory: mkdir -v ../gcc-build cd ../gcc-build Prepare GCC for compilation: CC="gcc -B/usr/bin/" ../gcc-&gcc-version;/configure --prefix=/tools \ --with-local-prefix=/tools --disable-nls --enable-shared \ --enable-languages=c CC="gcc -B/usr/bin/" This forces gcc to prefer the linker from the host in /usr/bin. This is necessary on some hosts where the new ld built in the previous section is not compatible with the host's gcc. --with-local-prefix=/tools The purpose of this switch is to remove /usr/local/include from gcc's include search path. This is not absolutely essential, however, it helps to minimize the influence of the host system. --enable-shared This switch allows the building of libgcc_s.so.1 and libgcc_eh.a. Having libgcc_eh.a available ensures that the configure script for Glibc (the next package we compile) produces the proper results. --enable-languages=c This option ensures that only the C compiler is built. The following command will compile GCC not once, but several times. It uses the programs compiled in a first round to compile itself a second time, and then again a third time. It then compares these second and third compiles to make sure it can reproduce itself flawlessly. This is called bootstrapping. Building GCC in this way ensures that it was compiled correctly and is now the default configuration for the released package. Continue with compiling by running: make Compilation is now complete. At this point, the test suite would normally be run, but, as mentioned before, the test suite framework is not in place yet. The benefits of running the tests at this point are minimal since the programs from this first pass will soon be replaced. Install the package: make install As a finishing touch, create a symlink. Many programs and scripts run cc instead of gcc, which is used to keep programs generic and therefore usable on all kinds of UNIX systems where the GNU C compiler is not always installed. Running cc leaves the system administrator free to decide which C compiler to install: ln -vs gcc /tools/bin/cc