#!/bin/bash
#  Copyright (C) 2009, 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=1.8.3
ARCH=${ARCH:-i486}
B=2

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-O2 -march=i486 -mtune=i686}

PKG=${TMP}/package-gdbm

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

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

cd ${TMP}/gdbm-${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 {} +

# Apply patches.
#
# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=208927
zcat ${CWD}/patches/gdbm-1.8.3-zeroheaders.patch.gz | patch -p1 -b --verbose

# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=274417
zcat ${CWD}/patches/gdbm-1.8.3-shortread.patch.gz | patch -p1 -b --verbose

# dbm_open compatibility function will not lock the database if
# NDBM_LOCK environment variable is set to false. This is useful:
# * old applications handle locks themselves (POSIX man page says that
#   ndbm did not use to lock files, see dbm_clearerr(3p))
# * locks are degrading performance a lot on NFS shares
zcat ${CWD}/patches/gdbm-1.8.3-ndbmlock.patch.gz | patch -p1 -b --verbose

# Prevent compilation of c++ files that use gdbm from warnings.
# g++ compilator complained about the use of anonymous class
zcat ${CWD}/patches/gdbm-1.8.3-filestruct.patch.gz | patch -p1 -b --verbose

CFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --localstatedir=/var \
 --infodir=/usr/info \
 --mandir=/usr/man \
 --build=${ARCH}-dragora-linux-gnu

make
make install INSTALL_ROOT=$PKG

strip --strip-unneeded ${PKG}/usr/lib/*.so*
strip --strip-debug ${PKG}/usr/lib/*.a

# This breaks with the support of DBM in Python,
# mod_ssl and others; don't use it:
#make install-compat INSTALL_ROOT=$PKG

# Fix ownerships (bin:bin):
chown -R 0:0 $PKG

# Compress info/man pages:
gzip -9N \
 ${PKG}/usr/info/gdbm.info \
 ${PKG}/usr/man/man3/gdbm.3

# Add the documentation:
mkdir -p ${PKG}/usr/doc/gdbm-${V}
cp -a \
 COPYING ChangeLog NEWS README \
 ${PKG}/usr/doc/gdbm-${V}

# Copy the description files:
mkdir -p ${PKG}/description
cp ${CWD}/description/* ${PKG}/description

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