dnl Process this file with autoconf to produce a configure script.
AC_INIT(dna.c)

dnl Set $host_os, which is needed by javac detection.
AC_CANONICAL_SYSTEM

dnl Check for programs.
AC_PROG_CC

dnl Check for a working Java compiler, keep going if unsuccessful.
pushdef([AC_MSG_ERROR], defn([AC_MSG_WARN]))
AC_PROG_JAVAC
popdef([AC_MSG_ERROR])

dnl Check for JNI includes, keep going if not present.
pushdef([AC_MSG_ERROR], defn([AC_MSG_WARN]))
AC_JNI_INCLUDE_DIR
for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS; do
  CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
done
popdef([AC_MSG_ERROR])

AC_CHECK_LIB(c,srandomdev)

AC_CHECK_HEADERS(stdio.h errno.h stdlib.h strings.h unistd.h string.h arpa/inet.h sys/socket.h sys/mman.h sys/time.h poll.h netdb.h linux/if.h linux/netlink.h linux/rtnetlink.h net/if.h netinet/in.h ifaddrs.h net/route.h signal.h jni.h)

echo "Fetching and building NaCl if required."
echo "(this can take HOURS to build depending on your architecture,"
echo " but fortunately it only needs to happen once.)"
cd nacl
./nacl-gcc-prep
cd ..
CFLAGS="$CFLAGS -Inacl/"`cat nacl/naclinc.txt`
LDFLAGS="$LDFLAGS nacl/"`cat nacl/nacllib.txt`

AC_CHECK_LIB(m,sqrtf,[LDFLAGS="$LDFLAGS -lm"])
AC_CHECK_LIB(nsl,callrpc,[LDFLAGS="$LDFLAGS -lnsl"])
AC_CHECK_LIB(socket,socket,[LDFLAGS="$LDFLAGS -lsocket"])
AC_CHECK_LIB(dl,dlopen,[LDFLAGS="$LDFLAGS -ldl"])
AC_CHECK_LIB(pthread,pthread_create,[LDFLAGS="$LDFLAGS -lpthread"])
AC_CHECK_LIB(portaudio,Pa_Terminate,[LDFLAGS="$LDFLAGS -lportaudio"; CFLAGS="$CFLAGS -DWITH_PORTAUDIO"])

AC_OUTPUT(Makefile)