configure

#! /bin/sh

# If shipping a production release, these two variables should be changed
# to e.g.:
#
#   converge_version=0.7
#   converge_date=2006/01/04

converge_version=2.1
converge_date=2014-02-25

abs_top_srcdir=`pwd`

prefix=""
rpython_opt="jit"
while [ $# -ge 1 ]; do
    case $1 in
        --prefix=*  ) prefix=`echo $1 | sed "s/--prefix=//g"`; shift;;
        --opt=*     ) rpython_opt=`echo $1 | sed "s/--opt=//g"`; shift;;
        -h | --help ) echo "./configure [--opt=<optimisation level>] [--prefix=<install path>]" 1>&2;
                      exit 0;;
        *           ) echo "Unknown switch $1"; exit 1;;
    esac
done

if [ "X$prefix" = "X" ]; then
    prefix="/usr/local/"
fi

echo "Checking for prefix... $prefix"

echo -n "Checking for Python interpreter... "

which pypy 2> /dev/null > /dev/null
if [ $? -eq 0 ]; then
    PYTHON=`which pypy`
elif [ $? -ne 0 ]; then
    which python2 2> /dev/null > /dev/null
    if [ $? -eq 0 ]; then
        PYTHON=`which python2`
    else
        echo "not found."
        exit 1
    fi
fi
echo $PYTHON

echo -n "Checking for RPython... "
if [ "X$PYPY_SRC" != "X" ]; then
    RPYTHON=$PYPY_SRC/rpython/bin/rpython
    if [ ! -f $RPYTHON ]; then
        RPYTHON=""
    fi
fi

if [ "X$RPYTHON" = "X" ]; then
    echo "not found (try setting \$PYPY_SRC to the root of the PyPy source distribution)."
    exit 1
fi
echo $RPYTHON

operating_system=`uname -s`
machine_type=`uname -m`
if [ "$operating_system" = "Darwin" -a "$machine_type" = "i386" ]; then
	# On modern Darwin machine it now seems that it's easier to build 64 bit
    # binaries than 32 bit. Why? I don't know.
	machine_type=x86_64
fi
case $operating_system in
    CYGWIN_NT* | MINGW* )
        EXEC_EXT=".exe"
        DIR_SEP="\\";;
    * )
        DIR_SEP="/";;
esac

case $machine_type in
	i386 | i686 )
        bootstrap_dir="bootstrap/32bit_little_endian";;
	amd64 | x86_64 )
        bootstrap_dir="bootstrap/64bit_little_endian";;
	*) echo Unknown machine type "$machine_type"; exit 1;;
esac

#
# install
#

echo -n "Checking for install... "
which install 2> /dev/null > /dev/null
if [ $? -eq 0 ]; then
    INSTALL="`which install`"
else
    INSTALL=$abs_top_srcdir/install-sh
fi
echo $INSTALL

#
# Find libpcre.a
#

echo -n "Checking for pcre-config... "
which pcre-config > /dev/null 2> /dev/null
if [ $? -ne 0 ]; then
    echo "not found."
    exit 1
fi
which pcre-config

echo -n "Checking for libpcre.a... "
libpcre_a=""
cnds=`pcre-config --libs | tr " " "\n" | grep "^-L" | sort -u | sed "s/^-L//"`
pcre_configp=`which pcre-config 2> /dev/null`
pcre_configd=`dirname $pcre_configp`
cnds="$cnds `dirname $pcre_configd`/lib"
if [ $operating_system = "Linux" ]; then
    cnds="$cnds `ldconfig -v 2>/dev/null | grep -v ^$'\t'|sed s/://g`"
fi
for dir in $cnds; do
	cnd=$dir/libpcre.a
	if [ -f $cnd ]; then
		libpcre_a=$cnd
		break
	fi
done
if [ "X$libpcre_a" = "X" ]; then
	echo "not found."
    exit 1
fi
echo $libpcre_a
libpcre_include_dirs=`pcre-config --cflags | tr " " "\n"  | grep "^-I" | sed "s/-I//g" | tr "\n" " " | sed "s/ *$//g"`
libpcre_library_dirs=`pcre-config --libs | tr " " "\n"  | grep "^-L" | sed "s/-L//g" | tr "\n" " " | sed "s/ *$//g"`
libpcre_libraries=`pcre-config --libs | tr " " "\n"  | grep "^-l" | sed "s/-l//g" | tr "\n" " "`
libpcre_link_flags=`pcre-config --libs | tr " " "\n"  | grep -v "^-[lL]" | tr "\n" " "`

#
# Find libxml2.a
#

echo -n "Checking for xml2-config... "
which xml2-config > /dev/null 2> /dev/null
if [ $? -ne 0 ]; then
    echo "not found."
    exit 1
fi
which xml2-config

echo -n "Checking for libxml2.a... "
libxml2_a=""
cnds=`xml2-config --libs | tr " " "\n" | grep "^-L" | sort -u | sed "s/^-L//"`
xml2_configp=`which xml2-config 2> /dev/null`
xml2_configd=`dirname $xml2_configp`
cnds="$cnds `dirname $xml2_configd`/lib"
if [ $operating_system = "Linux" ]; then
    cnds="$cnds `ldconfig -v 2>/dev/null | grep -v ^$'\t'|sed s/://g`"
fi
for dir in $cnds ; do
	cnd=$dir/libxml2.a
	if [ -f $cnd ]; then
		libxml2_a=$cnd
		break
	fi
done
if [ "X$libxml2_a" = "X" ]; then
	echo "not found."
    exit 1
fi
echo $libxml2_a
libxml2_include_dirs=`xml2-config --cflags | tr " " "\n"  | grep "^-I" | sed "s/-I//g" | tr "\n" " " | sed "s/ *$//g"`
libxml2_library_dirs=`xml2-config --libs | tr " " "\n"  | grep "^-L" | sed "s/-L//g" | tr "\n" " " | sed "s/ *$//g"`
libxml2_libraries=`xml2-config --libs | tr " " "\n"  | grep "^-l" | sed "s/-l//g" | tr "\n" " "`
libxml2_link_flags=`xml2-config --libs | tr " " "\n"  | grep -v "^-[lL]" | tr "\n" " "`

# Some Linux installations of libxml2 don't include -lz in --libs output, even
# when they should. As a gross hack around this problem, we add -lz to the list
# of libraries needed; sometimes this might not be necessary (depending on how
# libxml2 was compiled), but it generally won't do any harm.

echo $libxml2_libraries | tr " " "\n" | grep "^z$" 2> /dev/null > /dev/null
if [ $? -ne 0 ]; then
    libxml2_libraries="$libxml2_libraries z"
fi

# Hack around the fact that --opt=jit on Linux currently uses
# --gcrootfinder=asmgcc which causes a crash with libXML2. Hopefully this hack
# can be removed sooner rather than later.

echo -n "Checking gcrootfinder... "
no_asmgcc_hack=""
case $operating_system in
    Linux* )
        if [ $rpython_opt = "jit" ]; then
            no_asmgcc_hack="--gcrootfinder=shadowstack"
        fi
esac
if [ "X$no_asmgcc_hack" = "X" ]; then
    echo "using default"
else
    echo $no_asmgcc_hack
fi

#
# Bootstrap compiler
#

echo -n "Copying bootstrap compiler... "

cp -p $bootstrap_dir/convergec.bootstrap compiler/convergec
cp -p $bootstrap_dir/convergel.bootstrap compiler/convergel

echo "done."

echo -n "Rewriting .in files... "

rewriter=`mktemp XXXXXXXXXX`
cat << EOF > $rewriter
import os, sys
sys.stdout.write(sys.argv[2] + " ")
sys.stdout.flush()
fin=file(sys.argv[1], "r")
d=fin.read(-1)
fin.close()
i = 3
while i < len(sys.argv):
    d=d.replace(sys.argv[i], sys.argv[i + 1])
    i+=2
rewrite=True
if os.path.exists(sys.argv[2]):
    fout=file(sys.argv[2], "r")
    dout=fout.read(-1)
    fout.close()
    if d==dout:
        rewrite=False
if rewrite:
    fout=file(sys.argv[2], "w")
    fout.write(d)
    fout.close()
EOF
for p_in in `find . -name "*.in"`; do
    p=`echo $p_in | sed "s/.in$//g"`
    $PYTHON $rewriter $p_in $p "@abs_top_srcdir@" "$abs_top_srcdir" "@PYTHON@" "$PYTHON" "@RPYTHON@" "$RPYTHON" "@RPYTHON_OPT@" "$rpython_opt" "@INSTALL@" "$INSTALL" "@prefix@" "$prefix" "@bindir@" "$prefix/bin" "@datadir@" "$prefix/share" "@libdir@" "$prefix/lib" "@INSTALL@" "$abs_top_srcdir/install.sh" "@CONVERGE_VERSION@" "$converge_version" "@CONVERGE_DATE@"  "$converge_date" "@PLATFORM@" "$operating_system" "@EXEC_EXT@" "$exec_ext" "@DIR_SEP@" "$DIR_SEP" "@LIBPCRE_INCLUDE_DIRS@" "$libpcre_include_dirs" "@LIBPCRE_LIBRARY_DIRS@" "$libpcre_library_dirs" "@LIBPCRE_LIBRARIES@" "$libpcre_libraries" "@LIBPCRE_LINK_FLAGS@" "$libpcre_link_flags" "@LIBPCRE_A@" "$libpcre_a" "@LIBXML2_INCLUDE_DIRS@" "$libxml2_include_dirs" "@LIBXML2_LIBRARY_DIRS@" "$libxml2_library_dirs" "@LIBXML2_LIBRARIES@" "$libxml2_libraries" "@LIBXML2_LINK_FLAGS@" "$libxml2_link_flags" "@LIBXML2_A@" "$libxml2_a" "@NO_ASMGCC_HACK@" "$no_asmgcc_hack"
done
echo
rm -f $rewriter