10.9. GMP-5.0.2

GMP is a library for arithmetic on arbitrary precision integers, rational numbers, and floating-point numbers.

10.9.1. Installation of GMP



If you are compiling this package on a different CPU than you plan to run the CLFS system on, you must replace GMP's config.guess and config.sub wrappers with the originals. This will prevent GMP from optimizing for the wrong CPU. You can make this change with the following command:

mv -v config{fsf,}.guess
mv -v config{fsf,}.sub

Prepare GMP for compilation:

CPPFLAGS=-fexceptions CC="gcc -isystem /usr/include" \
CXX="g++ -isystem /usr/include" \
LDFLAGS="-Wl,-rpath-link,/usr/lib:/lib" \
  ./configure --prefix=/usr --enable-cxx --enable-mpbsd

Compile the package:



The test suite for GMP is considered critical. Do not skip it under any circumstance.

Test the results:

make check

Install the package:

make install

10.9.2. Contents of GMP

Installed libraries: libgmp.[a,so], libgmpxx.[a,so], libmp.[a,so]

Short Descriptions


Contains the definitions for GNU multiple precision functions.


Contains a C++ class wrapper for GMP types.


Contains the Berkeley MP compatibility library.