Details on this package are located in Section 6.20.2, “Contents of GCC.”
Libstdc++ is the standard C++ library. It is needed for the correct operation of the g++ compiler.
Libstdc++ is part of the GCC
sources. You should first unpack the GCC tarball and change to
the gcc-5.1.0
directory.
Create a directory for Libstdc++ and enter it:
mkdir -v ../gcc-build cd ../gcc-build
Prepare Libstdc++ for compilation:
../gcc-5.1.0/libstdc++-v3/configure \ --host=$LFS_TGT \ --prefix=/tools \ --disable-multilib \ --disable-nls \ --disable-libstdcxx-threads \ --disable-libstdcxx-pch \ --with-gxx-include-dir=/tools/$LFS_TGT/include/c++/5.1.0
The meaning of the configure options:
--host=...
Indicates to use the cross compiler we have just built
instead of the one in /usr/bin
.
--disable-libstdcxx-threads
Since we have not yet built the C threads library, the C++ one cannot be built either.
--disable-libstdcxx-pch
This switch prevents the installation of precompiled include files, which are not needed at this stage.
--with-gxx-include-dir=/tools/$LFS_TGT/include/c++/5.1.0
This is the location where the standard include files are searched by the C++ compiler. In a normal build, this information is automatically passed to the Libstdc++ configure options from the toplevel directory. In our case, this information must be explicitly given.
Compile libstdc++ by running:
make
Install the library to a temporary directory:
make install DESTDIR=$(pwd)/debian/tmp
Create the package archive:
buildpkg --package=libstdc++-pass1 --version=5.1.0
Install the package:
dpkg -i ../libstdc++-pass1_5.1.0_*.deb
Details on this package are located in Section 6.20.2, “Contents of GCC.”