The Libffi library provides a portable, high level programming interface to various calling conventions. This allows a programmer to call any function specified by a call interface description at run time.
Similar to GMP, libffi builds with optimizations specific to the
processor in use. If building for another system, change the
value of the --with-gcc-arch=
parameter in the
following command to an architecture name fully implemented by
the CPU on that system. If this is not done, all applications
that link to libffi will trigger Illegal Operation Errors.
Prepare libffi for compilation:
./configure --prefix=/usr \ --disable-static \ --with-gcc-arch=native \ --disable-exec-static-tramp
The meaning of the configure option:
--with-gcc-arch=native
Ensure GCC optimizes for the current system. If this is not specified, the system is guessed and the code generated may not be correct for some systems. If the generated code will be copied from the native system to a less capable system, use the less capable system as a parameter. For details about alternative system types, see the x86 options in the GCC manual.
--disable-exec-static-tramp
Disable static trampoline support. It's a new security feature in libffi, but some BLFS packages (notably GJS) have not been adapted for it.
Compile the package:
make
To test the results, issue:
make check
Install the package:
make install