libraries/libffi: Added (Foreign Function Interface library)

Signed-off-by: Robby Workman <rworkman@slackbuilds.org>

libraries/libffi/README

@@ -0,0 +1,12 @@
+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.
+
+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 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 
+between the two languages. 

libraries/libffi/libffi.SlackBuild

@@ -0,0 +1,86 @@
+#!/bin/sh
+
+# Slackware build script for libffi
+# Written by Andrew Rowland, darowland@ieee.org
+
+PRGNAM=libffi
+VERSION=3.0.10
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i486 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+DOCS="MAPPING PKG-INFO ChangeLog INSTALL TODO AUTHORS COPYING NEWS README"
+
+if [ "$ARCH" = "i486" ]; then
+  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find . \
+ \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
+ -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
+ -exec chmod 644 {} \;
+
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --mandir=/usr/man \
+  --infodir=/usr/info \
+  --docdir=/usr/doc/$PRGNAM-$VERSION \
+  --build=$ARCH-slackware-linux
+
+make
+make install DESTDIR=$PKG
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | \
+  grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+
+rm -f $PKG/usr/info/dir
+gzip -9 $PKG/usr/info/*.info*
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a ChangeLog LICENSE README $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}

libraries/libffi/libffi.info

@@ -0,0 +1,10 @@
+PRGNAM="libffi"
+VERSION="3.0.10"
+HOMEPAGE="http://sourceware.org/libffi"
+DOWNLOAD="ftp://sourceware.org/pub/libffi/libffi-3.0.10.tar.gz"
+MD5SUM="79390673f5d07a8fb342bc09b5055b6f"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+MAINTAINER="Andrew Rowland"
+EMAIL="darowland@ieee.org"
+APPROVED="rworkman"

libraries/libffi/slack-desc

@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|'
+# on the right side marks the last column you can put a character in.  You must
+# make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':'.
+
+      |-----handy-ruler------------------------------------------------------|
+libffi: libffi (Foreign Function Interface library)
+libffi:
+libffi: The libffi library provides a portable, high level programming 
+libffi: interface to various calling conventions. This allows a programmer to 
+libffi: call any function specified by a call interface description at 
+libffi: run-time.
+libffi:
+libffi: http://sourceware.org/libffi/
+libffi:
+libffi:
+libffi: