Cross-Compiled Linux From Scratch - Embedded - Version SVN-0.0.1-20090726-x86

Chapter 6. Constructing Cross-Compile Tools

6.9. Cross GCC-4.3.3 - Static

The GCC package contains the GNU compiler collection, which includes the C and C++ compilers.

6.9.1. Installation of Cross GCC Compiler with Static libgcc and no Threads

The following patch contains a number of updates to the 4.3.3 branch by the GCC developers:

patch -Np1 -i ../gcc-4.3.3-branch_update-5.patch

To make sure that a couple of tools use the proper syntax, apply the following patch:

patch -Np1 -i ../gcc-4.3.3-posix-1.patch

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:

AR=ar LDFLAGS="-Wl,-rpath,/cross-tools/lib" \
  ../gcc-4.3.3/configure --prefix=${CLFS}/cross-tools \
  --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \
  --with-sysroot=${CLFS} --disable-nls  --disable-shared \
  --with-mpfr=/cross-tools --with-gmp=/cross-tools \
  --without-headers --with-newlib --disable-decimal-float \
  --disable-libgomp --disable-libmudflap --disable-libssp \
  --disable-threads --enable-languages=c

The meaning of the configure options:

--disable-shared

Disables the creation of the shared libraries.

--disable-threads

This will prevent GCC from looking for the multi-thread include files, since they haven't been created for this architecture yet. GCC will be able to find the multi-thread information after the Glibc headers are created.

--enable-languages=c

This option ensures that only the C compiler is built.

Continue with compiling the package:

make

Install the package:

make install

Details on this package are located in Section 6.11.2, “Contents of GCC.”