libraries/libspiro: Added (adaptation of Spiro formula).

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

libraries/libspiro/README

@@ -0,0 +1,7 @@
+Spiro is the creation of Raph Levien which simplifies the
+drawing of beautiful curves.Using Bezier splines a artist can
+easily draw curves with the same slope on either side of a curve
+point. This library will take an array of spiro control points and
+convert them into a series of bezier splines which can then be used
+in myriad of ways the world has come to use beziers.
+

libraries/libspiro/libspiro.SlackBuild

@@ -0,0 +1,118 @@
+#!/bin/bash
+
+# Slackware build script for libspiro
+
+# Copyright 2024 Vijay Marcel
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=libspiro
+VERSION=${VERSION:-20221101}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+SRCNAM=${SRCNAM:-libspiro-dist}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+  exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-march=i586 -mtune=i686 -pipe -O2 -fPIC"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-march=i686 -mtune=i686 -pipe -O2 -fPIC"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-march=x86-64 -mtune=generic -pipe -O2 -fPIC"
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+set -e
+trap 'echo "$0 FAILED at line $LINENO!" | tee -a $OUTPUT/error-${PRGNAM}.log' ERR
+
+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 -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+autoreconf -fiv 
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --mandir=/usr/man \
+  --docdir=/usr/doc/$PRGNAM-$VERSION \
+  --disable-static \
+  --with-gnu-ld \
+  --build=$ARCH-slackware-linux
+
+make
+make install DESTDIR=$PKG
+
+# Don't ship .la files:
+rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded --remove-section=.comment --remove-section=.note 2> /dev/null || true
+
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
+
+mkdir -pv $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a AUTHORS ChangeLog COPYING README README-GeorgeWilliams README-RaphLevien  $PKG/usr/doc/$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

libraries/libspiro/libspiro.info

@@ -0,0 +1,10 @@
+PRGNAM="libspiro"
+VERSION="20221101"
+HOMEPAGE="https://github.com/fontforge/libspiro"
+DOWNLOAD="https://github.com/fontforge/libspiro/archive/20221101/libspiro-20221101.tar.gz"
+MD5SUM="139c56bf560adf88df0f06c5795dc878"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Vijay Marcel"
+EMAIL="vijaymarcel@outlook.com"

libraries/libspiro/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 ':' except on otherwise blank lines.
+
+        |-----handy-ruler------------------------------------------------------|
+libspiro: libspiro (Draw Beautiful curves)
+libspiro:
+libspiro: Spiro is the creation of Raph Levien which simplifies the
+libspiro: drawing of beautiful curves.Using Bezier splines a artist can
+libspiro: easily draw curves with the same slope on either side of a curve
+libspiro: point. This library will take an array of spiro control points and
+libspiro: convert them into a series of bezier splines which can then be used
+libspiro: in myriad of ways the world has come to use beziers.
+libspiro:
+libspiro: Homepage:https://github.com/fontforge/libspiro
+libspiro: