[lfs@lfs-cent7 gcc-build]$ pwd
/mnt/lfs/sources/gcc-build

../gcc-4.8.2/configure                               \
    --target=$LFS_TGT                                \
    --prefix=/tools                                  \
    --with-sysroot=$LFS                              \
    --with-newlib                                    \
    --without-headers                                \
    --with-local-prefix=/tools                       \
    --with-native-system-header-dir=/tools/include   \
    --disable-nls                                    \
    --disable-shared                                 \
    --disable-multilib                               \
    --disable-decimal-float                          \
    --disable-threads                                \
    --disable-libatomic                              \
    --disable-libgomp                                \
    --disable-libitm                                 \
    --disable-libmudflap                             \
    --disable-libquadmath                            \
    --disable-libsanitizer                           \
    --disable-libssp                                 \
    --disable-libstdc++-v3                           \
    --enable-languages=c,c++                         \
    --with-mpfr-include=../gcc-4.8.2/mpfr/src \
    --with-mpfr-lib=../gcc-4.8.2/mpfr/src/.libs \
    --with-gmp=../gcc-4.8.2/gmp

======================================================

checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-lfs-linux-gnu
checking for a BSD-compatible install... /bin/install -c
checking whether ln works... yes
checking whether ln -s works... yes
checking for a sed that does not truncate output... /bin/sed
checking for gawk... gawk
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking whether g++ accepts -static-libstdc++ -static-libgcc... no
checking for gnatbind... no
checking for gnatmake... no
checking whether compiler driver understands Ada... no
checking how to compare bootstrapped objects... cmp --ignore-initial=16 $$f1 $$f2
checking for objdir... .libs
checking for version 0.10 of ISL... no
checking for version 0.11 of ISL... no
checking for version 0.12 of ISL... no
*** This configuration is not supported in the following subdirectories:
     target-libquadmath gnattools target-libada target-libgfortran target-libgo target-libffi target-libbacktrace target-zlib target-libjava target-libobjc target-libgomp target-libatomic target-libitm target-libstdc++-v3 target-libmudflap target-libsanitizer target-libssp target-boehm-gc
    (Any other directories should still work fine.)
checking for default BUILD_CONFIG...
checking for bison... bison -y
checking for bison... bison
checking for gm4... no
checking for gnum4... no
checking for m4... m4
checking for flex... flex
checking for flex... flex
checking for makeinfo... no
checking for expect... no
checking for runtest... no
checking for ar... ar
checking for as... as
checking for dlltool... no
checking for ld... ld
checking for lipo... no
checking for nm... nm
checking for ranlib... ranlib
checking for strip... strip
checking for windres... no
checking for windmc... no
checking for objcopy... objcopy
checking for objdump... objdump
checking for readelf... readelf
checking for x86_64-lfs-linux-gnu-cc... no
checking for x86_64-lfs-linux-gnu-gcc... no
checking for x86_64-lfs-linux-gnu-c++... no
checking for x86_64-lfs-linux-gnu-g++... no
checking for x86_64-lfs-linux-gnu-cxx... no
checking for x86_64-lfs-linux-gnu-gxx... no
checking for x86_64-lfs-linux-gnu-gcc... no
checking for x86_64-lfs-linux-gnu-gcj... no
checking for x86_64-lfs-linux-gnu-gfortran... no
checking for x86_64-lfs-linux-gnu-gccgo... no
checking for ar... /tools/x86_64-lfs-linux-gnu/bin/ar
checking for as... no
checking for x86_64-lfs-linux-gnu-as... no
checking for dlltool... no
checking for x86_64-lfs-linux-gnu-dlltool... no
checking for ld... no
checking for x86_64-lfs-linux-gnu-ld... no
checking for lipo... no
checking for x86_64-lfs-linux-gnu-lipo... no
checking for nm... /tools/x86_64-lfs-linux-gnu/bin/nm
checking for objdump... /tools/x86_64-lfs-linux-gnu/bin/objdump
checking for ranlib... /tools/x86_64-lfs-linux-gnu/bin/ranlib
checking for readelf... no
checking for x86_64-lfs-linux-gnu-readelf... x86_64-lfs-linux-gnu-readelf
checking for strip... /tools/x86_64-lfs-linux-gnu/bin/strip
checking for windres... no
checking for x86_64-lfs-linux-gnu-windres... no
checking for windmc... no
checking for x86_64-lfs-linux-gnu-windmc... no
checking where to find the target ar... pre-installed in /tools/x86_64-lfs-linux-gnu/bin
checking where to find the target as... pre-installed
checking where to find the target cc... just compiled
checking where to find the target c++... just compiled
checking where to find the target c++ for libstdc++... just compiled
checking where to find the target dlltool... pre-installed
checking where to find the target gcc... just compiled
checking where to find the target gcj... pre-installed
checking where to find the target gfortran... pre-installed
checking where to find the target gccgo... pre-installed
checking where to find the target ld... pre-installed
checking where to find the target lipo... pre-installed
checking where to find the target nm... pre-installed in /tools/x86_64-lfs-linux-gnu/bin
checking where to find the target objdump... pre-installed in /tools/x86_64-lfs-linux-gnu/bin
checking where to find the target ranlib... pre-installed in /tools/x86_64-lfs-linux-gnu/bin
checking where to find the target readelf... pre-installed
checking where to find the target strip... pre-installed in /tools/x86_64-lfs-linux-gnu/bin
checking where to find the target windres... pre-installed
checking where to find the target windmc... pre-installed
checking whether to enable maintainer-specific portions of Makefiles... no
configure: creating ./config.status
config.status: creating Makefile