#!/bin/bash
#  Copyright (C) 2010-2011  Matias A. Fonzo, <selk@dragora.org>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

CWD=$(pwd)

TMP=${TMP:-/tmp/sources}
OUT=${OUT:-/tmp/packages}

V=2.8.4
ARCH=${ARCH:-x86_64}
B=2

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-O2 -mtune=generic}

# Parallel jobs for the compiler:
JOBS=${JOBS:=-j5}

PKG=${TMP}/package-cmake

rm -rf $PKG
mkdir -p $PKG $OUT

echo "Uncompressing the tarball..."
rm -rf ${TMP}/cmake-${V}
lzip -cd ${CWD}/cmake-${V}.tar.lz | tar -xvf - -C $TMP

cd ${TMP}/cmake-${V}

# Set sane ownerships and permissions:
chown -R 0:0 .
find . \
 \( -perm 2777 -o \
    -perm 777  -o \
    -perm 775  -o \
    -perm 711  -o \
    -perm 555  -o \
    -perm 511     \
 \) -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="$DCFLAGS" \
CXXFLAGS="$DCFLAGS" \
./bootstrap \
 --prefix=/usr \
 --bindir=/bin \
 --mandir=/man \
 --docdir=/doc/cmake-${V} \
 --system-libs \
 --paralell=$JOBS \
 --verbose \
 --build=${ARCH}-dragora-linux-gnu

make
make install DESTDIR=$PKG

# Add the profile for the cmake environment:
mkdir -p ${PKG}/etc/profile.d
zcat ${CWD}/profile.d/cmake.gz > ${PKG}/etc/profile.d/cmake.new
chmod 755 ${PKG}/etc/profile.d/cmake.new

# Strip binaries & libraries:
( cd $PKG
  find . -type f | xargs file | awk '/ELF/ && /executable/ || /shared object/' | \
   cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

# Include extras:
( cd Docs
  install -D -m 644 cmake-indent.vim ${PKG}/usr/share/vim/indent/cmake-indent.vim
  install -D -m 644 cmake-syntax.vim ${PKG}/usr/share/vim/indent/cmake-syntax.vim
  install -D -m 644 cmake-mode.el ${PKG}/usr/share/emacs/site-lisp/cmake-mode.el
)

gzip -9N ${PKG}/usr/man/man?/*.?  # Compress man pages.

# Add extra documentation:
mkdir -p ${PKG}/usr/doc/cmake-${V}
cp -a \
 ChangeLog.txt Copyright.txt Readme.txt \
 ${PKG}/usr/doc/cmake-${V}

# Copy the description files:
mkdir -p ${PKG}/{description,install}
cp ${CWD}/description/* ${PKG}/description
zcat ${CWD}/post-install.gz > ${PKG}/install/post-install

cd $PKG
makepkg -l ${OUT}/cmake-${V}-${ARCH}-${B}.tlz