#!/usr/bin/env bash
#
# This is the script we use to   build  SWI-Prolog and all its packages.
# Copy the script to  `build',  edit   to  suit  the  local installation
# requirements and run it. Once correct, upgrading   to a new release is
# now limited to getting the new sources and run ./build.

# [EDIT] Prefix location of the installation. It is _not_ adviced to use
# a    versioned    prefix.    The    system      will     install    in
# $PREFIX/lib/swipl-<version> and create symlinks   from $PREFIX/bin for
# the main programs. Users can  always   use  older  versions by running
# $PREFIX/lib/swipl-<version>/bin/<arch>/pl
#
# If you change PREFIX such that the system  is installed in a place for
# which you have no write access, set  SUDO   to  the command to run the
# remainder of the commandline as privilaged   user. E.g., if you change
# PREFIX to /usr/local you typically must change SUDO to "sudo"

PREFIX=$HOME
SUDO=
#SUDO="sudo"

# [EDIT] Version of make to use.  This   must  be GNU-make. On many Unix
# systems this is installed as 'gmake'. On most GNU-based systems (e.g.,
# linux), the default make is GNU-make.  You can use 'make --jobs=<max>'
# to build the system faster using  all   your  cores. The optimal value
# depends a lot on your hardware.   Unfortunately,  not all dependencies
# are covered by the Makefiles. If your build   fails on what might be a
# missing dependency, try  re-running  without   --jobs  and  report the
# issue.

# MAKE=make
MAKE='make --jobs=4'

# [EDIT] Compiler and options.
#
#	CC:	 Which C-compiler to use
#	COFLAGS: Flags for the optimizer such as "-O3" or "-g"
#	CMFLAGS: Machine flags such as "-m64" (64-bits on gcc)
#	CIFLAGS: Include-path such as "-I/opt/include"
#	LDFLAGS: Link flags such as "-L/opt/lib"
#
# Leaving an option blank leaves the  choice to configure. The commented
# values below enable much better C-level debugging with almost the same
# performance on GCC based systems (the default is to compile using -O3)
# For optiomal performance, see also --enable-useprofile below.

# export CC=
# export COFLAGS="-O2 -fno-strict-aliasing -gdwarf-2 -g3"
# export CMFLAGS=
# export CIFLAGS=
# export LDFLAGS="-O2 -g"

# On MacOS you need this to get  some libraries from Macports. There are
# three commonly used C compilers on the   Mac:  gcc (based on llvm) and
# clang that come with XCode and (native) gcc from Macports. The current
# SWI-Prolog sources compile and work with all these alternatives. There
# are a few gotchas:
#
#   - The ssl package uses the Apple security API that can only be
#     compiled using the XCode compilers.  Compiled with native
#     gcc SSL has no access to the OS root certificates and can only
#     be used without certificate validation or with certificates
#     explicitly provided by the user.
#   - If you want the last bit of performance and don't mind some extra
#     work, get a recent native GCC, set CC below and enable
#     --enable-useprofile (see below).  You could compile SSL using
#     the XCode compiler.
#
# Recent versions of Quartz  (X11)  seem   to  install  the headers into
# /opt/X11/include. We put this  after   /opt/local/include,  to use the
# Macport version of X11 if this is installed.
#
# As of MacOS 10.9, Apple's  Java  does   not  include  the  headers for
# linking to C. Therefore you  need  to   install  Oracle's  JDK and set
# $JAVAPREFIX to the bin directory holding =java=.  We try to find it at
# the most likely places below.

# If you use HomeBrew as your Mac OS package manager, uncomment the
# following line to use the default installation locations for shared
# libraries and header files.

# USE_HOMEBREW=yes

if [ "`uname`" = Darwin ]; then
  if [ "x$USE_HOMEBREW" = xyes ]; then
      export LIBRARY_PATH=/usr/local/lib:/usr/lib
      export CPATH=/usr/local/include:/usr/include:/opt/X11/include
  else
      export LIBRARY_PATH=/usr/lib:/opt/local/lib:/opt/local/lib/db60
      export CPATH=/usr/include:/opt/local/include:/opt/local/include/db60:/opt/X11/include
  fi

  export PKG_CONFIG_PATH=/usr/X11R6/lib/pkgconfig:/opt/local/lib/pkgconfig:/opt/X11/lib/pkgconfig
  if [ -f "$JAVA_HOME/bin/java" ]; then
    export JAVAPREFIX="$JAVA_HOME/bin"
  elif [ -f /usr/libexec/java_home ]; then
    export JAVAPREFIX=$(/usr/libexec/java_home)/bin
  elif [ -f /Library/Java/Home/bin/java ]; then
    export JAVAPREFIX=/Library/Java/Home/bin
  elif [ -d /Library/Java/JavaVirtualMachines/*/Contents/Home/bin ]; then
    export JAVAPREFIX="`echo /Library/Java/JavaVirtualMachines/*/Contents/Home/bin`"
  fi
  # export CC="gcc-4.2"
  # export CXX="g++-4.2"
  # export CXXCPP="g++-4.2 -E"
fi

# [EDIT] On Solaris also puts there stuff everywhere ...
# export CIFLAGS=-I/opt/csw/include/ncurses
# export LDFLAGS=-L/opt/csw/lib

# [EDIT] On FreeBSD, java is installed under /usr/local/jdk<version>,
# and the executables are _copied_ to /usr/local/bin. Unfortunately, the
# copy leaves the headers out, so the original files must be used.
# export JAVAC=/usr/local/jdk1.6.0/bin/javac

# [EDIT] On FreeBSD, the following is needed to fetch the headers for
# GMP.
# export CIFLAGS='-I/usr/local/include'

# [EDIT] Open OpenBSD, the following are needed to fetch the required
# non-default dependencies.  Using "CC=cc" the preferred clang compiler
# is used.  SWI-Prolog compiles both with clang and gcc.
# export CC=cc
# export CIFLAGS="-I/usr/local/include"
# export LDFLAGS="-O2 -g -L/usr/local/lib"

export CFLAGS="$COFLAGS $CMFLAGS $CIFLAGS"

################################################################
# Package (add-ons) selection
################################################################

# [EDIT] Packages to configure. Leaving it   blank  compiles all default
# packages. The final set of packages is
#
#	${PKG-<default>} + $EXTRA_PKGS - $DISABLE_PKGS

# export PKG=

# [EDIT] Packages to skip.  Leaving it blank compiles all default packages.
# export DISABLE_PKGS="jpl ssl odbc utf8proc"

# [EDIT] Packages to add.
# export EXTRA_PKGS="bdb ltx2htm space"

# [EDIT] Where to find the jar for Junit 3.8.  Needed to test jpl
# export JUNIT=/opt/local/share/java/junit.jar

################################################################
# Misc stuff
################################################################

# [EDIT] Extra options to pass to the toplevel configure.

# --link
# Using --link, the system is installed using symbolic links. This means
# you cannot remove or clean  the   sources,  but  it largely simplifies
# editing the system Prolog files during development.
#
# --enable-useprofile
# The config --enable-useprofile exploits GCC  -fprofile-use option. The
# system  is  compiled,  profiled   and    re-compiled   to  get  better
# branch-prediction. This makes the system approx.   10%  faster. Do not
# use this for developing the kernel because it complicates maintenance.
#
# --disable-libdirversion
# By default, the system is  installed in $libdir/swipl-<version>. Using
# this option drops <version>. Using versions,  you can install multiple
# versions side-by-site and run old  versions   at  any time by starting
# $libdir/swipl-<version>/bin/$arch/swipl. Without, the system is always
# at a nice stable place, so external foreign objects linked against the
# binary need not be updated with a Prolog update.
#
# --enable-shared
# Use this to create a shared object  for the Prolog kernel. The default
# depends on the platform. Creating a shared   object  is the default on
# most platforms, either because it is  needed   or  because  it does no
# harm. The only exception to this rule  is Linux on x86 (Intel 32-bit).
# It is not needed on this platform  and Linux shared object model costs
# a CPU register. Given the limited number   of CPU registers on the x86
# platform, this results in a performance degradation of about 10%.

# EXTRACFG+=" --link"
# EXTRACFG+=" --enable-useprofile"
# EXTRACFG+=" --disable-libdirversion"
# EXTRACFG+=" --enable-shared"
export EXTRACFG

# One possiblity to make relocatable executables   on  Linux is by using
# the RPATH mechanism. See  ld.so(1)   and  chrpath(1). However, chrpath
# cannot enlarge the path. Uncommenting the   line below adds :xxx... to
# the RPATH, where the given count is the number of x-s.
#
# export RPATH_RESERVE=70

################################################################
# No edit should be needed below this line
################################################################

V=`cat VERSION`
config=true
make=true
install=true
done=false
setvars=false

while test "$done" = false; do
case "$1" in
   --config)	make=false
		install=false
		shift
		;;
   --make)	config=false
		install=false
		shift
		;;
   --install)	config=false
		make=false
		shift
		;;
   --prefix=*)  PREFIX=`echo "$1" | sed 's/--prefix=//'`
		shift
		;;
   --setvars)	setvars=true
		shift
		;;
   *)		done=true
		;;
esac
done

if [ "$setvars" = "false" ]; then
  rm -f packages/.failed.*

  if [ "$config" = "true" ]; then
    ./configure --prefix=$PREFIX --with-world $EXTRACFG $@ 2>&1 | tee configure.out
    if [ "${PIPESTATUS[0]}" != 0 ]; then exit 1; fi
  fi

  if [ "$make" = "true" ]; then
    $MAKE $@ 2>&1 | tee make.out
    if [ "${PIPESTATUS[0]}" != 0 ]; then exit 1; fi
  fi

  if [ "$install" = "true" ]; then
    $SUDO $MAKE install $@ 2>&1 | tee make-install.out
    if [ "${PIPESTATUS[0]}" != 0 ]; then exit 1; fi
  fi

  if [ -z "$DESTDIR" ]; then
    $MAKE check-installation
  fi

  # Parse build log for warnings that may indicate serious runtime issues
  if [ "$make" = "true" ]; then
    [ -f make.out ] && bash scripts/check_build_log.sh make.out
  fi

  # See whether any package failed to build
  bash packages/report-failed || exit 1
fi # setvars