#!/bin/bash

# Slackware build script for cc65

# Written by B. Watson (yalhcru@gmail.com)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# 20210317 bkw:
# - Update for 2.19 release. Script also tested with 2.18 and
#   2.17_20180906, in case someone needs one of those versions.
# - Use 'make html' to build the docs instead of pregenerating (tested
#   on -current too).
# - Add optional info docs to package.
# - Use USER_CFLAGS instead of sed to support SLKCFLAGS.
# - TODO: look at making good man pages for at least the executables.

# 20180907 bkw:
# - Update for 2.17_20180906, git commit b6ccd4d.
# - Rename git2targz.sh => git2tarxz.sh.
# - Add option to git2tarxz.sh to use a specific tag/commit.
# - Add README_SBo.txt documenting the use of git2tarxz.sh.

# 20180103 bkw:
# - Update for 2.16_20180102, git commit 040134e7.
# - "prefix" renamed to "PREFIX" in src/Makefile. For now, set both in
#   the make command, so this script can still build the previous version
#   if someone needs it.

# 20170703 bkw:
# - Update for 2.16_20170630. Upstream still hasn't done a release, but
#   again there's lots of development.
# - My self-hosted source tarball now includes the HTML documentation. This
#   script used to build it, but -current's linuxdoc-tools chokes on it,
#   and fixing it would require me a week or two probably. So, for now
#   anyway, the tarball includes docs that were built on 14.2.

# 20170129 bkw:
# - Update for v2.15_20170126, aka git 6878ede. Upstream hasn't done
#   a release since 2013 or so, but there's been lots of development.
#   Script modified enough that it can no longer build v2.13.3; use
#   the one from SBo's 14.1 repo if you need the old version for some
#   reason. Source is created from a git checkout, see git2targz.sh.

PRGNAM=cc65
VERSION=${VERSION:-2.19}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
else
  SLKCFLAGS="-O2"
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT $PKG/usr/doc/$PRGNAM-$VERSION
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.?z
cd $PRGNAM-$VERSION
chown -R root:root .
find . -type f -print0 | xargs -0 chmod 644
find . -type d -print0 | xargs -0 chmod 755

# v2.19 binaries report themselves as v2.18. upstream fixed this in
# git commit cffcbce60, I'll just sed it.
[ "$VERSION" = "2.19" ] && sed -i '/#define VER_MINOR/s,18U,19U,' src/common/version.c

# HTML docs are always created and installed. If the user really
# wants to, the same docs can be installed as .info files. They're not
# enabled by default because they include .info files with names like
# "index", "coding", "using-make" and even "lynx". It's not obvious
# they belong to cc65, when they're sitting in the same /usr/info
# dir as all the other .info files. Plus, the internal links between
# the documents don't work when converted to .info, whereas the HTML
# ones do.
INFO="${INFO:-no}"

PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
make all PREFIX=/usr prefix=/usr LDFLAGS=-Wl,-s USER_CFLAGS="$SLKCFLAGS"
make -C doc html
[ "$INFO" = "yes" ] && make -C doc html info
make install \
  PREFIX=$PKG/usr prefix=$PKG/usr \
  infodir=$PKG/usr/info htmldir=$PKGDOC \
  samplesdir=$PKGDOC/samples

# Binaries already stripped, no man pages, but there might be info
# pages that needs to be gzipped. Note that the the info files can be
# read with e.g. "info cc65", but won't show up in the info directory:
# the generated docs lack sections and descriptions, so using
# install-info in doinst.sh doesn't do anything. I also tried using
# "linuxdoc -B txt --manpage" on the SGML doc sources, but the results
# are ugly and have screwed-up formatting. If I want man pages, I'll
# probably have to make them manually (pun intended).
[ "$INFO" = "yes" ] && gzip $PKG/usr/info/*

mkdir -p $PKGDOC
cp -a README* LICENSE $PKGDOC

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:-tgz}