configure

#!/bin/bash
#  Copyright 2013 Jesse 'Jeaye' Wilkerson
#  See licensing in LICENSE file, or at:
#      http://www.opensource.org/licenses/BSD-3-Clause
#
#  File: configure
#  Author: Jesse 'Jeaye' Wilkerson
#  Description:
#    Submodule and configuration manager.
#

# Re-invoke the configure script
# and keep the output at bay.
if [ $# -ne 1 -o "$1" != "quiet" ];
then
  $0 "quiet" > /dev/null
  exit $?
fi

# Exit on errors
set -o errexit
# Exit if we try to use an unbound variable
set -o nounset

# Determine system
UNAME_LINUX=0
UNAME_CYGWIN=0
UNAME_OSX=0
UNAME=$(uname)
if [ "$UNAME" = "Linux" ];
then
  UNAME_LINUX=1
elif [ "$UNAME" = "Darwin" ];
then
  UNAME_OSX=1
elif [ "$(uname -o)" = "Cygwin" ];
then
  UNAME_CYGWIN=1
else
  echo "Invalid uname ($UNAME): Unsuppported platform" 1>&2
  exit 1
fi

# Colors
COLOR_OFF=$(tput sgr0)
COLOR_RED=$(tput setaf 1)
COLOR_YELLOW=$(tput setaf 3)
COLOR_GREEN=$(tput setaf 2)

# Output colorizing
ECHO_PREFIX=$COLOR_GREEN"»»»"$COLOR_OFF
if [ "$UNAME" = "Linux" ];
then
	ECHO="echo -e $ECHO_PREFIX"
else
	ECHO="echo $ECHO_PREFIX"
fi

log() { $ECHO "$@" 1>&2; }

log "Configuring Q³"
log "WARNING: This project is not actively under development"
log "WARNING: This script will build an old Rust version to run Q³"

if [ "1" -eq "$UNAME_LINUX" ];
then
  log "Platform: Linux"
elif [ "1" -eq "$UNAME_OSX" ];
then
  log "Platform: OSX"
elif [ "1" -eq "$UNAME_CYGWIN" ];
then
  log "Platform: Cygwin"
fi

# BWD is the build directory
BWD=$PWD/build 
log "Build directory: $BWD"

# SWD is the source directory
SWD=$(cd $(dirname $0) && pwd) 
log "Source directory: $SWD"

function readlink() {
  DIR=$(echo "${1%/*}")
  cd "$DIR"
  link_res=$(pwd -P)
}

# Update submodules
log "Updating submodules"
pushd $SWD
  git submodule update --recursive --init
popd

# Clean up any previous build data
rm -rf build
mkdir -p build
cd build

## Rust
log "Building rust (will be a while)"
mkdir -p rust
pushd rust
  sh $SWD/lib/rust/configure --prefix=$SWD
  make -j8 && make install
popd
PATH=$SWD/bin:$PATH

## Build GLFW3 (doesn't support out of source builds)
mkdir -p glfw_static glfw_shared

# Static
log "Building glfw_static"
pushd glfw_static
  cmake $SWD/lib/glfw/CMakeLists.txt -DBUILD_SHARED_LIBS=OFF
  pushd $SWD/lib/glfw
    make clean
    make glfw
    cp src/libglfw3.a $BWD/glfw_static
    ln -sf $BWD/glfw_static/libglfw3.a $BWD/glfw_static/libglfw.a
  popd
popd

# Dynamic
log "Building glfw_shared"
pushd glfw_shared
  cmake $SWD/lib/glfw/CMakeLists.txt -DBUILD_SHARED_LIBS=ON
  pushd $SWD/lib/glfw
    make clean
    make glfw

    if [ "1" -eq "$UNAME_LINUX" -o "1" -eq "$UNAME_CYGWIN" ];
    then
      # Linux
      cp src/libglfw.so $BWD/../
      ln -sf $BWD/../libglfw.so $BWD/../libglfw.so.3
      ln -sf $BWD/../libglfw.so $BWD/../libglfw.so.3.0
    elif [ "1" -eq "$UNAME_OSX" ];
    then
      # Mac
      cp src/libglfw.3.0.dylib $BWD/../
      ln -sf $BWD/../libglfw.3.0.dylib $BWD/../libglfw.3.dylib
      ln -sf $BWD/../libglfw.3.0.dylib $BWD/../libglfw.dylib
    fi
  popd
popd

## GLFW3 Rust
log "Building glfw-rs"
mkdir -p glfw-rs
pushd glfw-rs
  pushd $SWD/lib/glfw-rs
    ln -sf $BWD/glfw_static/libglfw* ./
    ln -sf $SWD/lib/glfw/src/libglfw* ./
    touch src/glfw/lib.rs
    $SWD/bin/rustpkg clean glfw
    $SWD/bin/rustpkg build glfw

    if [ "0" -eq "$UNAME_LINUX" -o "0" -eq "$UNAME_CYGWIN" ];
    then
      # Linux
      rm -f $BWD/../libglfw-*.so
      for file in `find build -name '*.so'`; do
        cp $file $BWD/../
      done
    elif [ "0" -eq "$UNAME_OSX" ];
    then
      # Mac
      rm -f $BWD/../libglfw-*.dylib
      for file in `find build -name '*.dylib'`; do
        cp $file $BWD/../
      done
    fi
  popd
popd

## OpenGL ES
log "Building rust-opengles"
mkdir -p rust-opengles
pushd rust-opengles
  sh $SWD/lib/rust-opengles/configure
  make clean
  make -B
popd

## Rust OpenGL
log "Building gl-rs"
mkdir -p gl-rs
pushd $SWD/lib/gl-rs
  rustpkg clean gl
  rustpkg build --opt-level=3 gl
  if [ "0" -eq "$UNAME_LINUX" -o "0" -eq "$UNAME_CYGWIN" ];
  then
    # Linux
    rm -f $BWD/../libgl-*.so
    for file in `find build -name '*.so'`; do
      cp $file $BWD/../
    done
  elif [ "0" -eq "$UNAME_OSX" ];
  then
    # Mac
    rm -f $BWD/../libgl-*.dylib
    for file in `find build -name '*.dylib'`; do
      cp $file $BWD/../
    done
  fi
popd

## STB-Image
log "Building stb-image"
mkdir -p stb-image
pushd stb-image
  sh $SWD/lib/stb-image/configure
  make clean
  make -B
popd

## STB-Image
log "Building ncurses-rs"
mkdir -p ncurses-rs
pushd ncurses-rs
  pushd $SWD/lib/ncurses-rs
    make clean
    make -B
    mv lib/libncurses* $BWD/ncurses-rs/
  popd
popd

## Q³
cd .. # Back to the original invoking directory

# Move over the make file
sed "s#%PROJ_DIR%#${SWD}#" $SWD/Makefile.stub > Makefile 

readlink $SWD/build
swd_link=$link_res
readlink $BWD
bwd_link=$link_res
if [ "$swd_link" != "$bwd_link" ];
then
  # Link the data directory, since this is an out of source build
  ln -sf $SWD/data data
fi

# Require a clean build
find . -maxdepth 1 -type f -name '.build_*' | grep -v git | xargs rm -f || true

log "Done configuring Q³."