configure

#!/bin/sh
#########################################################################
#
# spill - segregated package install logical linker
#
# Copyright (C) Richard P. Curnow  2003, 2004
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
# 
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
#
# =======================================================================

if [ "x${CC}" = "x" ]; then
  MYCC="gcc"
else
  MYCC="${CC}"
fi

if [ "x${CFLAGS}" = "x" ]; then
  MYCFLAGS="-O2 -Wall -g"
else
  MYCFLAGS="${CFLAGS}"
fi

# =======================================================================
# Functions
#{{{ test_cc : basic compiler sanity check
test_cc () {
  printf "Testing whether your compiler works : "
  cat >docheck.c <<EOF;
#include <stdio.h>
int main (int argc, char **argv)
{
  return 0;
}
EOF
  ${MYCC} ${MYCFLAGS} -o docheck docheck.c >/dev/null 2>&1
  if [ $? -eq 0 ]
  then
    printf "it works\n"
  else
    printf "it doesn't work\n"
    rm -f docheck.c docheck
    exit 1
  fi
  rm -f docheck.c docheck
}
#}}}
#{{{ usage
usage () {
  cat <<EOF;
\`configure' configures spill to adapt to many kinds of systems.

Usage: ./configure [OPTION]...

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [/usr/local]

By default, \`make install' will install all the files in
\`/usr/local/bin', \`/usr/local/lib' etc.  You can specify
an installation prefix other than \`/usr/local' using \`--prefix',
for instance \`--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR           user executables [EPREFIX/bin]
  --sbindir=DIR          system admin executables [EPREFIX/sbin]
  --libdir=DIR           object code libraries [EPREFIX/lib]
  --includedir=DIR       C header files [PREFIX/include]
  --infodir=DIR          info documentation [PREFIX/info]
  --mandir=DIR           man documentation [PREFIX/man]

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>

Use these variables to override the choices made by \`configure' or to help
it to find libraries and programs with nonstandard names/locations.

Report bugs to <rc@rc0.org.uk>.
EOF
}
#}}}
# =======================================================================

# Defaults for variables
PREFIX=/usr/local

# Parse options to configure
for option
do
	case "$option" in

  --prefix=* | --install-prefix=* )
    PREFIX=`echo $option | sed -e 's/[^=]*=//;'`
    ;;
  --bindir=* )
    BINDIR=`echo $option | sed -e 's/[^=]*=//;'`
    ;;
  --sbindir=* )
    SBINDIR=`echo $option | sed -e 's/[^=]*=//;'`
    ;;
  --libdir=* )
    LIBDIR=`echo $option | sed -e 's/[^=]*=//;'`
    ;;
  --mandir=* )
    MANDIR=`echo $option | sed -e 's/[^=]*=//;'`
    ;;
  -h | --help )
    usage
    exit 1
    ;;
  esac
done

test_cc

if [ "x" = "x${BINDIR}" ]; then BINDIR=${PREFIX}/bin ; fi
if [ "x" = "x${SBINDIR}" ]; then SBINDIR=${PREFIX}/sbin ; fi
if [ "x" = "x${LIBDIR}" ]; then LIBDIR=${PREFIX}/lib ; fi
if [ "x" = "x${MANDIR}" ]; then MANDIR=${PREFIX}/man ; fi

echo "Generating Makefile"

rm -f Makefile
sed -e "s%@cc@%${MYCC}%; \
        s%@cflags@%${MYCFLAGS}%; \
        s%@prefix@%${PREFIX}%; \
        s%@bindir@%${BINDIR}%; \
        s%@sbindir@%${SBINDIR}%; \
        s%@libdir@%${LIBDIR}%; \
        s%@mandir@%${MANDIR}%; \
       " < Makefile.in > Makefile

# =======================================================================
# vim:et:sw=2:ht=2:sts=2:fdm=marker:cms=#%s