I came across this post and thought it should be noted, (somewhat attempted by yourself Thibaud F.), along with what seems like many other people out there struggling with the building of GCC-4.x.x in chapter 6.1.6 of Linux from Scratch.
If you run into the problem noted on this mailing list; checking for gmp internal files... configure: error: header files gmp-impl.h and longlong.h not found As well as another common problem on the lists where you GCC build fails with; configure: error: C preprocessor "/lib/cpp" fails sanity check See `config.log' for more details. make[1]: *** [configure-target-libgcc] Error 1 make[1]: Leaving directory `/gcc-build' make: *** [all] Error 2 Then it is most likely because you have failed to remove your GCC-4.x.x source directory after your initial build of GCC in Chapter 5.5. This is noted in the LFS Documentation but somewhat ignored because following the documentation step by step does not reiterate removing the source folder for every package installed, and it shouldn’t have to. To resolve the above make fails you must; 1.) Remove the gcc-4.x.x folder in /mnt/$LFS/sources/ 2.) Remove the gcc-build folder in /mnt/$LFS/sources/ 3.) Extract the gcc-4.x.x archive in /mnt/$LFS/sources/ 4.) Continue to follow the steps outlined in Chapter 6.1.6 of the LFS Documentation. Regards, Dyllan -- http://linuxfromscratch.org/mailman/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
