commit 367c247f30d9e6658f2308bc09c8418fc096dce2
Author: Simon Howard <fraggle@soulsphere.org>
Date:   Tue Feb 16 23:00:20 2016 -0500

    Add initial chocpkg scripts.

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1bc3b65
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+build
+install
+packages
diff --git a/chocpkg/chocpkg b/chocpkg/chocpkg
new file mode 100755
index 0000000..9d2dd2a
--- /dev/null
+++ b/chocpkg/chocpkg
@@ -0,0 +1,187 @@
+#!/bin/bash
+
+set -eu
+
+basic_setup() {
+    if [ "${CHOCPKG_ROOT:-}" = "" ]; then
+        echo "CHOCPKG_ROOT not configured - please source setup.sh." \
+            >> /dev/stderr
+        exit -1
+    fi
+    INSTALL_DIR="$CHOCPKG_ROOT/install"
+    PACKAGES_DIR="$CHOCPKG_ROOT/packages"
+    BUILD_DIR="$CHOCPKG_ROOT/build"
+    mkdir -p "$INSTALL_DIR" "$PACKAGES_DIR" "$BUILD_DIR"
+}
+
+basic_setup
+
+. chocpkg_functions.sh
+
+# Function that returns true if the package is installed.
+check_installed() {
+    if [ "${PACKAGE_INSTALLED_TOOL:-}" != "" ]; then
+        have_tool "$PACKAGE_INSTALLED_TOOL"
+    elif [ "${PKGCONFIG_NAME:-}" != "" ]; then
+        if ! have_tool pkg-config; then
+            error_exit "pkg-config not installed; please run:" \
+                       "    chocpkg install pkg-config"
+        fi
+        pkg-config --exists "$PKGCONFIG_NAME"
+    else
+        false
+    fi
+}
+
+# Function invoked before a package is built to set up the build environment,
+# if necessary. Can be overridden by pkgdef files.
+prebuild_setup() {
+    true
+}
+
+# Given a package name, find the pkgdef file associated with it, source
+# the contents of the file and set various variables.
+configure_for_package() {
+    local package=$1
+    local pkg_file="$CHOCPKG_ROOT/pkgdef/$package.sh"
+    if [ ! -e "$pkg_file" ]; then
+        error_exit "Package file $package.sh not found."
+    fi
+    # Defaults for package unless overridden:
+    PACKAGE_NAME=$package
+    PACKAGE_TYPE=fetch
+    PACKAGE_CONFIGURE_OPTS=""
+    DEPENDENCIES=""
+    GIT_BRANCH=master
+    . "$pkg_file"
+
+    # After reading the package file, configure a few more variables:
+    case "$PACKAGE_TYPE" in
+        fetch)
+            PACKAGE_FILENAME="$PACKAGE_NAME-$PACKAGE_VERSION.tar.gz"
+            PACKAGE_BUILD_DIR="$BUILD_DIR/$PACKAGE_NAME-$PACKAGE_VERSION"
+            ;;
+        git)
+            PACKAGE_BUILD_DIR="$BUILD_DIR/$PACKAGE_NAME"
+            ;;
+        *)
+            error_exit "Unknown package type $PACKAGE_TYPE"
+            ;;
+    esac
+}
+
+download_package_file() {
+    local dlfile="$PACKAGES_DIR/$PACKAGE_FILENAME"
+    if [ ! -e "$dlfile" ]; then
+        local tmpfile="$dlfile.part"
+        if ! chocurl "$PACKAGE_URL" > $tmpfile; then
+            error_exit "Failed to download $PACKAGE_URL"
+        fi
+        mv "$tmpfile" "$dlfile"
+    fi
+}
+
+extract_package_file() {
+    local dlfile="$PACKAGES_DIR/$PACKAGE_FILENAME"
+    (cd "$BUILD_DIR"; gunzip < "$dlfile" | tar -x) || (
+        mv "$dlfile" "$dlfile.bad"
+        error_exit "Failed to extract $PACKAGE_FILENAME: bad download?"
+    )
+}
+
+fetch_package() {
+    case "$PACKAGE_TYPE" in
+        fetch)
+            download_package_file
+            extract_package_file
+            ;;
+        git)
+            if [ ! -e "$PACKAGE_BUILD_DIR" ]; then
+                git clone -b "$GIT_BRANCH" "$GIT_URL" "$PACKAGE_BUILD_DIR"
+            fi
+            ;;
+    esac
+}
+
+setup_build_environment() {
+    CPPFLAGS="-I$INSTALL_DIR/include -I$INSTALL_DIR/include/SDL"
+    LDFLAGS="-L$INSTALL_DIR/lib $LDFLAGS"
+    ACLOCAL_PATH="$INSTALL_DIR/share/aclocal:$ACLOCAL_PATH"
+    export CPPFLAGS LDFLAGS ACLOCAL_PATH
+
+    if [ $(uname) = "Darwin" ]; then
+        CC="gcc -m32"
+        CXX="g++ -m32"
+        LDFLAGS="-lobjc $LDFLAGS"
+        MACOSX_DEPLOYMENT_TARGET=10.5
+        export CC CXX MACOSX_DEPLOYMENT_TARGET
+    else
+        LDFLAGS="-Wl,-rpath -Wl,$INSTALL_DIR/lib $LDFLAGS"
+    fi
+}
+
+build_package() {
+    if [ "$PACKAGE_NAME" != "pkg-config" ]; then
+        chocpkg install pkg-config
+    fi
+    for dep in $DEPENDENCIES; do
+        chocpkg install "$dep"
+    done
+    fetch_package "$PACKAGE_NAME"
+
+    echo =======================================================
+    echo "Building $PACKAGE_NAME..."
+    echo =======================================================
+    echo
+    cd "$PACKAGE_BUILD_DIR"
+
+    if ! prebuild_setup; then
+        error_exit "Failed pre-build setup step for $PACKAGE_NAME."
+    fi
+
+    ./configure --prefix="$INSTALL_DIR" $PACKAGE_CONFIGURE_OPTS || (
+        error_exit "Failed to configure package $PACKAGE_NAME for build."
+    )
+
+    make || (
+        error_exit "Failed to build package $PACKAGE_NAME."
+    )
+}
+
+install_package() {
+    # Already installed?
+    if check_installed; then
+        return
+    fi
+
+    build_package "$PACKAGE_NAME"
+
+    cd "$PACKAGE_BUILD_DIR"
+    make install || (
+         error_exit "Failed to install package $PACKAGE_NAME."
+    )
+}
+
+if [ $# -lt 2 ]; then
+    echo "Usage: $0 [fetch|build|install|installed] <package name>"
+    exit -1
+fi
+
+cmd=$1; package=$2
+configure_for_package "$package"
+
+case "$cmd" in
+    fetch)
+        fetch_package
+        ;;
+    build)
+        build_package
+        ;;
+    install)
+        install_package
+        ;;
+    installed)
+        check_installed
+        ;;
+esac
+
diff --git a/chocpkg/chocpkg_functions.sh b/chocpkg/chocpkg_functions.sh
new file mode 100644
index 0000000..20b8525
--- /dev/null
+++ b/chocpkg/chocpkg_functions.sh
@@ -0,0 +1,44 @@
+
+# Check if the specified string matches the glob pattern.
+pattern_match() {
+    pattern="$1"
+
+    case "$2" in
+        $pattern)
+            true
+            ;;
+        *)
+            false
+            ;;
+    esac
+}
+
+# Determine if a given program is in the PATH.
+have_tool() {
+    tool=$1
+
+    result=1
+    SAVE_IFS=$IFS
+    IFS=:
+
+    for dir in $PATH; do
+        if [ -e $dir/$tool ]; then
+            #echo $dir/$tool
+            result=0
+            break
+        fi
+    done
+
+    IFS=$SAVE_IFS
+
+    return $result
+}
+
+error_exit() {
+    (echo
+     for line in "$@"; do
+         echo "$line"
+     done) >&2
+    exit 1
+}
+
diff --git a/chocpkg/chocurl b/chocpkg/chocurl
new file mode 100755
index 0000000..a94b247
--- /dev/null
+++ b/chocpkg/chocurl
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+. chocpkg_functions.sh
+
+url=$1
+
+if have_tool curl; then
+    exec curl $url
+fi
+
+if have_tool wget; then
+    exec wget $url -O -
+fi
+
+# Desperate?
+
+for l in lynx links elinks; do
+    if have_tool $l; then
+        echo "Using $l to download $url..." >&2
+        exec $l -source $url
+    fi
+done
+
+error_exit "No tool available to retrieve URLs. Please install curl or wget."
+
diff --git a/pkgdef/SDL2.sh b/pkgdef/SDL2.sh
new file mode 100644
index 0000000..8fd3d83
--- /dev/null
+++ b/pkgdef/SDL2.sh
@@ -0,0 +1,10 @@
+PACKAGE_VERSION=2.0.3
+PACKAGE_URL=http://www.libsdl.org/release/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=sdl2
+
+# Many OS X systems have the Quartz X11 server installed, but
+# we probably don't want to use it.
+if [ $(uname) = "Darwin" ]; then
+    PACKAGE_CONFIGURE_OPTS=--disable-video-x11
+fi
+
diff --git a/pkgdef/SDL2_mixer.sh b/pkgdef/SDL2_mixer.sh
new file mode 100644
index 0000000..87f29e7
--- /dev/null
+++ b/pkgdef/SDL2_mixer.sh
@@ -0,0 +1,18 @@
+PACKAGE_VERSION=2.0.1
+PACKAGE_URL=http://www.libsdl.org/projects/SDL_mixer/release/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=SDL2_mixer
+
+# Disable dependencies on external libraries for sound file formats:
+PACKAGE_CONFIGURE_OPTS="
+    --disable-music-mod --disable-music-mp3
+    --disable-music-flac-shared --disable-music-ogg-shared
+"
+
+# ...except ones we have installed:
+if ! chocpkg installed flac; then
+    PACKAGE_CONFIGURE_OPTS="$PACKAGE_CONFIGURE_OPTS --disable-music-flac"
+fi
+if ! chocpkg installed libogg; then
+    PACKAGE_CONFIGURE_OPTS="$PACKAGE_CONFIGURE_OPTS --disable-music-ogg"
+fi
+
diff --git a/pkgdef/SDL2_net.sh b/pkgdef/SDL2_net.sh
new file mode 100644
index 0000000..2acbb59
--- /dev/null
+++ b/pkgdef/SDL2_net.sh
@@ -0,0 +1,4 @@
+PACKAGE_VERSION=2.0.1
+PACKAGE_URL=http://www.libsdl.org/projects/SDL_net/release/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=SDL2_net
+
diff --git a/pkgdef/chocolate-doom-git.sh b/pkgdef/chocolate-doom-git.sh
new file mode 100644
index 0000000..f8d115a
--- /dev/null
+++ b/pkgdef/chocolate-doom-git.sh
@@ -0,0 +1,14 @@
+PACKAGE_TYPE=git
+GIT_URL=https://github.com/fragglet/chocolate-doom.git
+GIT_BRANCH=sdl2-branch
+DEPENDENCIES="SDL2 SDL2_mixer SDL2_net"
+
+prebuild_setup() {
+    mkdir -p autotools
+    aclocal -I "$INSTALL_DIR/share/aclocal"
+    autoheader
+    automake -a -c
+    autoconf
+    automake
+}
+
diff --git a/pkgdef/flac.sh b/pkgdef/flac.sh
new file mode 100644
index 0000000..412cad4
--- /dev/null
+++ b/pkgdef/flac.sh
@@ -0,0 +1,4 @@
+PACKAGE_VERSION=1.2.1
+PACKAGE_URL=http://www.chocolate-doom.org/depends/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=flac
+
diff --git a/pkgdef/libogg.sh b/pkgdef/libogg.sh
new file mode 100644
index 0000000..95e5c71
--- /dev/null
+++ b/pkgdef/libogg.sh
@@ -0,0 +1,4 @@
+PACKAGE_VERSION=1.3.1
+PACKAGE_URL=http://www.chocolate-doom.org/depends/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=ogg
+
diff --git a/pkgdef/libpng.sh b/pkgdef/libpng.sh
new file mode 100644
index 0000000..92aff60
--- /dev/null
+++ b/pkgdef/libpng.sh
@@ -0,0 +1,4 @@
+PACKAGE_VERSION=1.6.10
+PACKAGE_URL=http://www.chocolate-doom.org/depends/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=libpng
+
diff --git a/pkgdef/libsamplerate.sh b/pkgdef/libsamplerate.sh
new file mode 100644
index 0000000..23cca8a
--- /dev/null
+++ b/pkgdef/libsamplerate.sh
@@ -0,0 +1,4 @@
+PACKAGE_VERSION=0.1.8
+PACKAGE_URL=http://www.chocolate-doom.org/depends/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=samplerate
+
diff --git a/pkgdef/libvorbis.sh b/pkgdef/libvorbis.sh
new file mode 100644
index 0000000..4438706
--- /dev/null
+++ b/pkgdef/libvorbis.sh
@@ -0,0 +1,5 @@
+PACKAGE_VERSION=1.3.4
+PACKAGE_URL=http://www.chocolate-doom.org/depends/${PACKAGE_NAME}-${PACKAGE_VERSION}.tar.gz
+PKGCONFIG_NAME=vorbis
+DEPENDENCIES="libogg"
+
diff --git a/pkgdef/pkg-config.sh b/pkgdef/pkg-config.sh
new file mode 100644
index 0000000..54f9868
--- /dev/null
+++ b/pkgdef/pkg-config.sh
@@ -0,0 +1,5 @@
+PACKAGE_VERSION=0.28
+PACKAGE_URL=https://pkgconfig.freedesktop.org/releases/pkg-config-${PACKAGE_VERSION}.tar.gz
+PACKAGE_INSTALLED_TOOL=pkg-config
+PACKAGE_CONFIGURE_OPTS="--with-internal-glib"
+
diff --git a/setup.sh b/setup.sh
new file mode 100644
index 0000000..e3fb2ca
--- /dev/null
+++ b/setup.sh
@@ -0,0 +1,24 @@
+
+CHOCPKG_ROOT=$HOME/chocolate-doom-build
+export CHOCPKG_ROOT
+
+# Build directory must not contain a space, or bad things happen:
+case "$CHOCPKG_ROOT" in
+*\ *)
+cat <<END
+The path to your home directory contains a space:
+
+    HOME=$HOME
+
+This script will probably fail to build - reset HOME to point
+somewhere else. For example, type:
+
+    mkdir /home/user
+    HOME=/home/user
+END
+exit -1
+esac
+
+# Set up various environment variables:
+PATH="$CHOCPKG_ROOT/chocpkg:$CHOCPKG_ROOT/install/bin:$PATH"
+