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Use pkgconfig. Increment libtool CURRENT version.

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2008-02-14 15:01:41 +00:00
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libffi/README
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@@ -1,40 +1,35 @@
This directory contains the libffi package, which is not part of GCC but
shipped with GCC as convenience.
Status
======
libffi-2.00 has not been released yet! This is a development snapshot!
libffi-1.20 was released on October 5, 1998. Check the libffi web
page for updates: <URL:http://sources.redhat.com/libffi/>.
libffi-3.00 was released on February xx, 2008. Check the libffi web
page for updates: <URL:http://sourceware.org/libffi/>.
What is libffi?
===============
Compilers for high level languages generate code that follow certain
conventions. These conventions are necessary, in part, for separate
compilation to work. One such convention is the "calling
convention". The "calling convention" is essentially a set of
assumptions made by the compiler about where function arguments will
be found on entry to a function. A "calling convention" also specifies
where the return value for a function is found.
conventions. These conventions are necessary, in part, for separate
compilation to work. One such convention is the "calling convention".
The "calling convention" is a set of assumptions made by the compiler
about where function arguments will be found on entry to a function.
A "calling convention" also specifies where the return value for a
function is found.
Some programs may not know at the time of compilation what arguments
are to be passed to a function. For instance, an interpreter may be
are to be passed to a function. For instance, an interpreter may be
told at run-time about the number and types of arguments used to call
a given function. Libffi can be used in such programs to provide a
a given function. Libffi can be used in such programs to provide a
bridge from the interpreter program to compiled code.
The libffi library provides a portable, high level programming
interface to various calling conventions. This allows a programmer to
interface to various calling conventions. This allows a programmer to
call any function specified by a call interface description at run
time.
time.
Ffi stands for Foreign Function Interface. A foreign function
FFI stands for Foreign Function Interface. A foreign function
interface is the popular name for the interface that allows code
written in one language to call code written in another language. The
written in one language to call code written in another language. The
libffi library really only provides the lowest, machine dependent
layer of a fully featured foreign function interface. A layer must
exist above libffi that handles type conversions for values passed
@@ -120,7 +115,7 @@ call and that you know the number and types of arguments to pass it,
as well as the return type of the function.
The first thing you must do is create an ffi_cif object that matches
the signature of the function you wish to call. The cif in ffi_cif
the signature of the function you wish to call. The `cif' in ffi_cif
stands for Call InterFace. To prepare a call interface object, use the
following function:
@@ -375,6 +370,9 @@ arguments' test).
History
=======
3.00 Feb-XX-08
Many changes, mostly thanks to the GCC project.
1.20 Oct-5-98
Raffaele Sena produces ARM port.