Linux From Scratch (w/Pacman) - Version r12.3-6-wip

Chapter 7. Entering Chroot and Building Additional Temporary Tools

7.23. GMP-6.3.0

The GMP package contains math libraries. These have useful functions for arbitrary precision arithmetic.

Approximate build time: 0.3 SBU
Required disk space: 54 MB

7.23.1. Installation of GMP

[Note]

Note

If you are building for 32-bit x86, but you have a CPU which is capable of running 64-bit code and you have specified CFLAGS in the environment, the configure script will attempt to configure for 64-bits and fail. Avoid this by invoking the configure command below with 

ABI=32 ./configure ...

The default settings of GMP produce libraries optimized for the host processor. Build generic libraries, suitable for package managment by running the following: 

cp -v configfsf.guess config.guess
cp -v configfsf.sub   config.sub

Prepare GMP for compilation: 

./configure --prefix=/usr               \
            --enable-cxx                \
            --disable-static            \
            --build=x86_64-pc-linux-gnu \
            --docdir=/usr/share/doc/gmp-6.3.0

The meaning of the new configure options:

--enable-cxx

This parameter enables C++ support

--docdir=/usr/share/doc/gmp-6.3.0

This variable specifies the correct place for the documentation.

Compile the package and generate the HTML documentation: 

sed -i -e 's/ -shared / -Wl,-O1,--as-needed\0/g' libtool
make
make html

Install the package and its documentation: 

make install
make install-html