#! /bin/sh
# Heavily based on the Slackware 12.2 SlackBuild

NAME=cgdb
VERSION=${VERSION:-0.6.4}
URL=http://$NAME.sourceforge.net
# DEPENDENCIES: gdb ncurses

SRC_TAR=$NAME-$VERSION.tar.gz
SRC_URL=http://downloads.sourceforge.net/$NAME/$SRC_TAR

ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-_tmonjalo}

CWD=$(pwd)
TMP=${TMP:-/tmp/$NAME}
PKG=$TMP/package-$NAME-$VERSION
PKG_TAR=$NAME-$VERSION-$ARCH-$BUILD$TAG.tgz
OUT=${OUT:-$CWD}

PREFIX_DIR=/usr
CONF_DIR=/etc
STATE_DIR=/var
BIN_DIR=$PREFIX_DIR/bin
SBIN_DIR=$PREFIX_DIR/sbin
MAN_DIR=$PREFIX_DIR/man
INFO_DIR=$PREFIX_DIR/info
DOC_DIR=$PREFIX_DIR/doc/$NAME-$VERSION

set -e

# get source
if [ ! -r $CWD/$SRC_TAR ] ; then
	wget -P $CWD $SRC_URL
fi
mkdir -p $TMP
SRC=$TMP/$(tar tf $CWD/$SRC_TAR | head -n1 | sed 's%/*$%%')
rm -rf $SRC
tar x -C $TMP -f $CWD/$SRC_TAR

# set build options
case "$ARCH" in
	i?86 )
		SLKCFLAGS="-O2 -march=$ARCH -mtune=i686"
		SLKLDFLAGS="" ; LIBDIRSUFFIX=""
	;;
	s390 | powerpc )
		SLKCFLAGS="-O2"
		SLKLDFLAGS="" ; LIBDIRSUFFIX=""
	;;
	x86_64 )
		SLKCFLAGS="-O2 -fPIC"
		SLKLDFLAGS="-L/usr/lib64" ; LIBDIRSUFFIX="64"
	;;
esac

# configure
(
cd $SRC
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
$SRC/configure \
	--prefix=$PREFIX_DIR \
	--bindir=$BIN_DIR \
	--sbindir=$SBIN_DIR \
	--sysconfdir=$CONF_DIR \
	--localstatedir=$STATE_DIR \
	--datarootdir=$PREFIX_DIR \
	--mandir=$MAN_DIR \
	--infodir=$INFO_DIR \
	--docdir=$DOC_DIR \
	--build=$ARCH-slackware-linux
)

# build
make -C $SRC

# install
rm -rf $PKG
mkdir -p $PKG/install
make -C $SRC install DESTDIR=$PKG

# strip binaries
find $PKG -exec file '{}' \; |
grep 'ELF .* \(executable\|shared object\)' |
cut -d':' -f1 |
xargs strip --strip-unneeded 2>/dev/null || true

# gzip man pages
if [ -d $PKG$MAN_DIR ] ; then
	for MAN_LINK in $(find $PKG$MAN_DIR -type l) ; do
		MAN_LINK_TARGET=$(readlink $MAN_LINK)
		if ! file $MAN_LINK_TARGET | fgrep -q gzip ; then
			ln -s $MAN_LINK_TARGET.gz $MAN_LINK.gz
			rm $MAN_LINK
		fi
	done
	find $PKG$MAN_DIR -type f -exec gzip -9 '{}' \; 2>/dev/null
fi

# gzip info pages and remove dir file
if [ -d $PKG$INFO_DIR ] ; then
	rm -f $PKG$INFO_DIR/dir
	find $PKG$INFO_DIR -type f -exec gzip -9 '{}' \; 2>/dev/null
fi

# add docs
mkdir -p $PKG$DOC_DIR
mv $PKG$PREFIX_DIR/cgdb/cgdb.txt $PKG$DOC_DIR
rm -rf $PKG$PREFIX_DIR/cgdb
cp -p \
	$SRC/AUTHORS \
	$SRC/COPYING \
	$SRC/README \
	$SRC/NEWS \
	$SRC/ChangeLog \
	$PKG$DOC_DIR
cat $0 > $PKG$DOC_DIR/$NAME.SlackBuild
find $PKG$DOC_DIR -type f -exec chmod 0644 '{}' \;

# add slack-desc
cat > $PKG/install/slack-desc <<- EOF
	# 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------------------------------------------------------|
	$NAME: CGDB
	$NAME:
	$NAME: CGDB is a curses-based interface to the GNU Debugger (GDB). The goal
	$NAME: of CGDB is to be lightweight and responsive; not encumbered with
	$NAME: unnecessary features.
	$NAME: The splitted screen shows the familiar GDB text interface and the
	$NAME: source as it executes. The UI is modeled on the text editor vi.
	$NAME: Some features: syntax-highlighted source, visual breakpoint, keyboard
	$NAME: shortcuts, searching using regexp, tab completion.
	$NAME:
	$NAME: $URL
EOF

# package
(
cd $PKG
requiredbuilder -v -y -s $CWD $PKG
mkdir -p $OUT
PACKAGE_CMD=$(cat <<- EOF
	chown -R root:root .
	chmod -R u+w,go+r-w,a-s .
	/sbin/makepkg -c n -l y -p $OUT/$PKG_TAR
	chown -R $(id -u):$(id -g) . $OUT/$PKG_TAR
EOF)
if [ $(id -u) -eq 0 ] ; then
	eval "$PACKAGE_CMD"
elif type fakeroot >/dev/null ; then
	echo ROOT by fakeroot...
	echo "$PACKAGE_CMD" | fakeroot
else
	echo ROOT by su...
	su -c "$PACKAGE_CMD"
fi
)

# cleanup
rm -rf $PKG
rm -rf $SRC
rm -rf $TMP