# $Id: configure.in,v 1.2 2005-09-22 20:23:20 hww3 Exp $
AC_INIT(usb_config.h.in)

AC_MODULE_INIT()
AC_CONFIG_HEADERS(usb_config.h)

# Check for libusb-1.0 using pkg-config
AC_MSG_CHECKING([for libusb-1.0])
if pkg-config --exists libusb-1.0; then
  AC_MSG_RESULT([yes])
  LIBUSB_CFLAGS=`pkg-config --cflags libusb-1.0`
  LIBUSB_LIBS=`pkg-config --libs libusb-1.0`
  AC_DEFINE([HAVE_LIBUSB_1_0], [1], [Define to 1 if you have libusb-1.0])
  have_libusb=yes
else
  AC_MSG_RESULT([no])
  AC_MSG_WARN([libusb-1.0 not found via pkg-config. USB functionality will not be available.])
  LIBUSB_CFLAGS=""
  LIBUSB_LIBS=""
  have_libusb=no
fi

# Get GMP flags if available (required by Pike headers)
if pkg-config --exists gmp; then
  GMP_CFLAGS=`pkg-config --cflags gmp`
else
  GMP_CFLAGS=""
fi

# Set compiler and linker flags for the module
CMOD_CFLAGS="${GMP_CFLAGS} ${LIBUSB_CFLAGS}"
CMOD_LIBS="${LIBUSB_LIBS}"

# Also add to CPPFLAGS so Pike's build system picks it up
CPPFLAGS="${CPPFLAGS} ${CMOD_CFLAGS}"
LDFLAGS="${LDFLAGS} ${CMOD_LIBS}"

# Check for the libusb header if pkg-config succeeded
if test "$have_libusb" = "yes"; then
  AC_CHECK_HEADERS([libusb.h])
fi 

AC_SUBST(CMOD_CFLAGS) 
AC_SUBST(CMOD_LIBS)

AC_OUTPUT(Makefile)