#!/bin/sh

if [ $# -gt 0 ]; then
  if [ "$1" = "static" ]; then
    STATIC_LIBRARIES=1
  elif [ "$1" = "shared" ]; then
    STATIC_LIBRARIES=0
  else
    echo usage: "./configure <shared | static>"
    exit 1
  fi
fi

ERROR=0
if [ -z "$STATIC_LIBRARIES" ]; then
STATIC_LIBRARIES=0
fi

# test for nasm
OBJDIR=`uname -m`
TOPDIR=`pwd`

if [ $OBJDIR = i686 ]; then
  if [ ! -x /usr/bin/nasm -a ! -x /usr/local/bin/nasm ]; then
    echo " *** Nasm is required."; 
    exit 1
  fi

fi

if [ ! -x /usr/bin/yasm -a ! -x /usr/local/bin/yasm ]; then
  echo " *** Yasm is required."; 
  exit 1
fi


# test for videodev2.h

rm -f a.out
cat > conftest.c << EOF
#include <asm/types.h>
#include <sys/time.h>
#include <linux/videodev2.h>
int main()
{
  return 0;
}
EOF

gcc conftest.c > /dev/null 2>&1

if [ -x a.out ]; then HAVE_VIDEO4LINUX2=y; else HAVE_VIDEO4LINUX2=n; fi


# test for dvb

rm -f a.out
cat > conftest.c << EOF
#include <time.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
int main()
{
  return 0;
}
EOF

gcc conftest.c > /dev/null 2>&1

if [ -x a.out ]; then HAVE_DVB=y; else HAVE_DVB=n; fi

rm -f a.out conftest.c


# test for -msse support

rm -f a.out
cat > conftest.c << EOF
int main()
{
  return 0;
}
EOF

gcc -msse conftest.c > /dev/null 2>&1

if [ -x a.out ]; then HAVE_GCC=y; else HAVE_GCC=n; fi

rm -f a.out conftest.c

if [ $HAVE_GCC = n ]; then
  echo " *** GCC 3.2.2 or greater is required.  Download it from gcc.gnu.org"; 
  exit 1
fi


# test for OpenGL 2.0

rm -f a.out
cat > conftest.c << EOF
#include <GL/gl.h>
#include <GL/glext.h>
#include <GL/glu.h>
int main()
{
  glUseProgram(0);
  return 0;
}
EOF

gcc conftest.c -lGL -lGLU > /dev/null 2>&1

if [ -x a.out ]; then HAVE_GL=y; else HAVE_GL=n; fi

rm -f a.out conftest.c


# probe for libraries
if [ $STATIC_LIBRARIES = 0 ]; then
  sed -e "s/^STATIC_LIBRARIES := .*/STATIC_LIBRARIES := n/" -i global_config
  cd thirdparty && ./configure shared && cd ..
else
  sed -e "s/^STATIC_LIBRARIES := .*/STATIC_LIBRARIES := y/" -i global_config
  cd thirdparty && ./configure static && cd ..
fi
if [ $? -ne 0 ]; then
  echo "Error in thirdparty configuration."
  exit 1
fi

echo CONFIGURING LIBZMPEG3
cd libzmpeg3* && ./configure && cd ..
if [ $? -ne 0 ]; then
  echo "Error in libzmpeg3 configuration."
  exit 1
fi


# success
echo "Configured successfully."
echo "Type 'make' to build me."
echo "If all ok, 'make install'";