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diff --git a/sci/mathematics/scilab/scilab.SlackBuild b/sci/mathematics/scilab/scilab.SlackBuild
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+++ b/sci/mathematics/scilab/scilab.SlackBuild
@@ -0,0 +1,252 @@
+#!/bin/bash
+#
+# slackbuild for lame, by Rudson R. Alves
+# requires: none
+# tested: scilab-4.0
+
+CWD=`pwd`
+
+if [ -e "/root/.slackbuildrc" ]; then
+  source /root/.slackbuildrc
+elif [ -e "/etc/slackbuildrc" ]; then
+  source /etc/slackbuildrc
+fi
+
+# --------  Variáveis de controle de versão  --------------
+# Nome da fonte para a qual o slackbuild foi construído e
+# o seu md5sum
+SRC_ORIG="scilab-4.0-src.tar.gz"
+MD5_ORIG="26e1c1480453bb1021bcea3ac412ad19"
+PACKAGE_ORIG=`echo $SRC_ORIG | sed -r 's/(.*)-(.*)-src\.(.*\..*)$/\1/'`
+VERSION_ORIG=`echo $SRC_ORIG | sed -r 's/(.*)-(.*)-src\.(.*\..*)$/\2/'`
+   EXTENSION=`echo $SRC_ORIG | sed -r 's/(.*)-(.*)-src\.(.*\..*)$/\3/'`
+
+# -------  Códigos de erro para o createpkg  --------------
+ERROR_WGET=31;      ERROR_MAKE=32;      ERROR_INSTALL=33
+ERROR_MD5=34;       ERROR_CONF=35;      ERROR_HELP=36
+ERROR_TAR=37;       ERROR_MKPKG=38;     ERROR_GPG=39
+ERROR_PATCH=40;     ERROR_VCS=41
+
+# ---------  Inicializa variáveis de entrada  -------------
+PACKAGE=$PACKAGE_ORIG
+ARCH=${ARCH:=i468}
+SRC_DIR=${SRC:=$CWD}
+VERSION=${VERSION:=$VERSION_ORIG}
+SRC=$PACKAGE-$VERSION-src.$EXTENSION
+BUILD=${BUILD:=1rud}
+TMP=${TMP:=/tmp}
+REPOS=${REPOS:=$TMP}
+PREFIX=${PREFIX:=/usr}
+OPTCONF=${OPTCONF:=""}
+MD5=${MD5:=$MD5_ORIG}
+URL=${URL:="http://www.scilab.org/download/stable/$SRC"}
+
+# ----------------  SlackBuild Help  ----------------------
+if [ "$1" = "--help" -o "$1" = "help" ]; then
+    echo -e "\033[01;32m
+Use: var1=\"value 1\" var2=\"value 2\" ... <package>.SlackBuild
+where:
+    ARCH=machine arch (i386, i486, i686, ...)
+    VERSION=package version
+    BUILD=package build version (default 1rud)
+    SRC=source name of package
+    SRC_DIR=source directory (default $PWD)
+    TMP=temporary directory (default /tmp)
+    REPOS=repository directory
+    PREFIX=prefix from install package
+    OPTCONF=options to pass from ./configure. To configure
+            help, use OPTCONF=\"--help\"
+    MD5=md5sum from package source
+    URL=url from package source
+\033[m"
+    exit $ERROR_HELP
+fi
+
+# ----------------  Download fontes  ----------------------
+# Fonte a ser compilada, com o path
+SOURCE=$SRC_DIR/$PACKAGE/$SRC
+# Verifica existência do pacote em $SRC em $SRC_DIR
+if [ ! -e $SOURCE ]; then
+    echo -e "\n\n\033[01;32m Download $PACKAGE \n\033[m"
+    wget "$URL" -P "$SRC_DIR/$PACKAGE/"
+    # Verifica se o
+    if [ $? -ne 0 ]; then
+        echo -e "\n\n\033[01;31m No such source file in $URL\n\033[m"
+        exit $ERROR_WGET
+    fi
+fi
+
+# ------------------  Checa md5sum  -----------------------
+if [ "$SRC_ORIG" = "$SRC" -o "$MD5" != "$MD5_ORIG" -a "$MD5" != "no" ]; then
+    SUM=`md5sum $SOURCE | awk '{print $1}'`
+    if [ "$SUM" != "$MD5" ]; then
+        echo -e "\n\n\033[01;31m MD5SUM error: run Slackbuild again \n\033[m"
+        echo -e "\033[01;31m Remove $PACKAGE from $SRC_DIR and start Slackbuild again or use MD5=\"no\" \n\033[m"
+        exit $ERROR_MD5
+    fi
+    echo -e "\n\n\033[01;32m Md5sum Ok \n\033[m"
+fi
+
+# -----------------  ARCH e LIBDIR  -----------------------
+# Libdir, para arch x86_64
+LIBDIR=$PREFIX/lib
+# Seleciona flags para o compilador
+if [ "$ARCH" = "i386" ]; then
+    SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
+elif [ "$ARCH" = "i486" ]; then
+    SLKCFLAGS="-O2 -march=i486 -mcpu=i686"
+elif [ "$ARCH" = "i686" ]; then
+    SLKCFLAGS="-O2 -march=i686"
+elif [ "$ARCH" = "s390" ]; then
+    SLKCFLAGS="-O2"
+elif [ "$ARCH" = "x86_64" ]; then
+    SLKCFLAGS="-O2"
+    LIBDIR="$PREFIX/lib64"
+fi
+
+# --------------  Desempacota fontes  ---------------------
+# Desempacota fontes em $TMP/$PACKAGE-source
+PKG_SRC=$TMP/$PACKAGE-source
+rm -rf $PKG_SRC 2>/dev/null
+mkdir -p $PKG_SRC
+# Desempacota $SOURCE em $TMP/$PACKAGE-source
+tar xvf $SOURCE -C $PKG_SRC
+if [ $? -ne 0 ]; then
+    echo -e "\n\n\033[01;31m $SOURCE file error \n\033[m"
+    exit $ERROR_TAR
+fi
+# Pega o nome do diretório das fontes independente de sua
+# estrutura (package-version...)
+PKG_DIR="$PKG_SRC/$( ls $PKG_SRC/ )"
+cd $PKG_DIR
+
+# --------------  Configura programa  ---------------------
+# Configura programa
+echo -e "\n\n\033[01;32m CFLAGS=\"$SLKCFLAGS\" ./configure --prefix=$PREFIX --libdir=$LIBDIR $OPTCONF \n\033[m"
+CFLAGS="$SLKCFLAGS" ./configure --prefix=$PREFIX --libdir=$LIBDIR $OPTCONF
+if [ $? -ne 0 -o "$OPTCONF" = "--help" ]; then
+    echo -e "\n\n\033[01;31m Configure error \n\033[m"
+    exit $ERROR_CONF
+fi
+
+# ----------------  Compila programa  ---------------------
+echo -e "\n\n\033[01;32m make all \n\033[m"
+make all
+if [ $? -ne 0 ]; then
+    echo -e "\n\n\033[01;31m Build error \n\033[m"
+    exit $ERROR_MAKE
+fi
+
+# -------------  Diretório Temporário  --------------------
+# Cria diretório temporário para construção do pacote
+PKG=$TMP/$PACKAGE
+rm -rf $PKG
+mkdir -p $PKG
+
+# ---------------  Instala programa  ----------------------
+# Instala programa em diretório temporário
+echo -e "\n\n\033[01;32m Install in $PKG \n\033[m"
+mkdir -p $PKG/$LIBDIR
+cp -pr $PKG_SRC/* $PKG/$LIBDIR/
+rm -rf $PKG/$LIBDIR/$PACKAGE-$VERSION/Perl
+rm -rf $PKG/$LIBDIR/$PACKAGE-$VERSION/Win-util
+rm -rf $PKG/$LIBDIR/$PACKAGE-$VERSION/intersci
+rm -rf $PKG/$LIBDIR/$PACKAGE-$VERSION/lcc
+rm -rf $PKG/$LIBDIR/$PACKAGE-$VERSION/libs
+rm -rf $PKG/$LIBDIR/$PACKAGE-$VERSION/m4
+rm -rf $PKG/$LIBDIR/$PACKAGE-$VERSION/ocaml
+
+if [ $? -ne 0 ]; then
+    echo -e "\n\n\033[01;31m Install error \n\033[m"
+    exit $ERROR_INSTALL
+fi
+
+# Refazendo links
+mkdir -p $PKG/$PREFIX/bin 2>/dev/null
+ln -s $LIBDIR/$PACKAGE-$VERSION/bin/intersci-n $PKG/$PREFIX/bin/intersci-n 2>/dev/null
+ln -s $LIBDIR/$PACKAGE-$VERSION/bin/scilab $PKG/$PREFIX/bin/scilab 2>/dev/null
+ln -s $LIBDIR/$PACKAGE-$VERSION/bin/intersci $PKG/$PREFIX/bin/intersci 2>/dev/null
+
+# Correção no index.html
+(
+    cd $PKG/$LIBDIR/$PACKAGE-$VERSION/man/eng/
+    eval "sed 's,${PKG_SRC},${PREFIX}/lib,g' index.htm > index.htm.new"
+    mv index.htm.new index.htm
+    cd ../fr
+    eval "sed 's,${PKG_SRC},${PREFIX}/lib,g' index.htm > index.htm.new"
+    mv index.htm.new index.htm
+)
+
+# Correção do script scilab
+(
+    pwd
+    cd $PKG/$LIBDIR/$PACKAGE-$VERSION/bin/
+    eval "sed 's,^SCI=\\\".*$,SCI=\\\"/usr/lib/$PACKAGE-$VERSION\\\",' scilab > scilab.new"
+    cp scilab.new scilab
+)
+
+# Cria Scilab.desktop
+mkdir -p $PKG/usr/share/applications/ 2>/dev/null
+cat << EOF_KDE > $PKG/usr/share/applications/Scilab.desktop
+[Desktop Entry]
+Encoding=UTF-8
+Categories=Education;Math;
+Exec=scilab
+Icon=/usr/lib/scilab-4.0/X11_defaults/scilab.xpm
+StartupNotify=true
+Terminal=false
+Type=Application
+Name=Scilab
+GenericName=Scilab
+Comment=
+EOF_KDE
+# ---------------------------------------------------------
+
+# -----------------  Stripa código  -----------------------
+cd $PKG
+echo -e "\n\n\033[01;32m Striping code \n\033[m"
+find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2>/dev/null
+find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2>/dev/null
+
+# ----------------  Cria slack-desc  ----------------------
+mkdir $PKG/install
+cat << EOF > $PKG/install/slack-desc
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|' on
+# the right side marks the last column you can put a character in.  You must make
+# exactly 11 lines for the formatting to be correct.  It's also customary to
+# leave one space after the ':'.
+
+     |--------handy-ruler-----------------------------------------------------|
+scilab: Scilab package by Rudson R. Alves <rudsonalves[a]yahoo.com.br>
+scilab:
+scilab:   Scilab is a scientific software package for numerical computations
+scilab: providing a powerful open computing enviroanment for engineering and
+scilab: scientific applications. Developed since 1990 by researchers from
+scilab: INRIA and ENPC, it is now maintained and developed by Scilab
+scilab: Consortium since its creation in May 2003.
+scilab:   Distributed freely and open source (see the license and the
+scilab: trademark license) via the Internet since 1994, Scilab is currently
+scilab: being used in educational and industrial environments around the
+scilab: world.
+EOF
+
+# -----------------  Documentações  -----------------------
+# Criar diretório de documentação
+PKG_DOC=usr/doc/$PACKAGE-$VERSION
+mkdir -p $PKG_DOC
+cp $PKG_DIR/{ACKNOWLEDGEMENTS,CHANGES,README_Unix,README_Windows.txt,RELEASE_NOTES,Readme_Visual.txt,licence.txt,release_notes.txt} $PKG_DOC
+
+# ---------------  Constroi o pacote  ---------------------
+echo -e "\n\n\033[01;32m makepkg -c y -l y $REPOS/$PACKAGE-$VERSION-$ARCH-$BUILD.tgz \n\033[m"
+makepkg -c y -l y $REPOS/$PACKAGE-$VERSION-$ARCH-$BUILD.tgz
+if [ $? -ne 0 ]; then
+    exit $ERROR_MKPKG
+fi
+
+# -----------  Remove arquivos temporários  ---------------
+if [ "$CLEANUP" == "yes" ]; then
+    echo -e "\n\n\033[01;32m Remove files... \n\033[m"
+    rm -rf $PKG $PKG_SRC
+fi