dnl Process this file with autoconf to produce a configure script.
AC_INIT(postal.cpp)
AC_CONFIG_HEADER(conf.h)
AC_SUBST(version)
version="0.73"

AC_ARG_ENABLE(stripping,
      [  --disable-stripping  disables stripping of installed binaries],
      STRIPPING=$strippingval, STRIPPING=no)
AC_SUBST(stripping)
if [[ ! "$STRIPPING" = "no" ]]; then
  stripping=""
else
  stripping="-s"
fi

AC_ARG_ENABLE(openssl,
      [  --disable-openssl  disables openssl support],
      DISABLEOPENSSL=$opensslval, DISABLEOPENSSL=no)
AC_ARG_ENABLE(gnutls,
      [  --disable-gnutls  disables gnutls support],
      DISABLEGNUTLS=$gnutlsval, DISABLEGNUTLS=no)

dnl Checks for programs.
AC_LANG_CPLUSPLUS
AC_PROG_CC
AC_PROG_CXX
AC_PROG_CXXCPP
AC_PROG_INSTALL

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_SIZE_T

AC_SUBST(semun)
AC_TRY_COMPILE(#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>
    , union semun sem; , semun="yes")
if [[ -n "$semun" ]]; then
   semun="#define SEMUN_IN_SEM_H"
fi

AC_SUBST(bool)
AC_TRY_COMPILE([], [bool var;] , , bool="typedef bool char;")
AC_SUBST(true_false)
AC_TRY_COMPILE(, [char c = true; char d = false;
] , true_false="0", true_false="1")
AC_SUBST(snprintf)
AC_TRY_LINK([#include <stdio.h>], char buf[[10]]; snprintf(buf, sizeof(buf), "abc");,,snprintf="no");
if [[ -n "$snprintf" ]]; then
   snprintf="#define NO_SNPRINTF"
fi

AC_SUBST(extra_ldflags)
extra_ldflags=
AC_ARG_WITH(extra-libs, [  --with-extra-libs=DIR   adds non standard library paths],
  use_extra_libs=$withval,
  use_extra_libs=NONE
)
if test -n "$use_extra_libs" && \
   test "$use_extra_libs" != "NONE"; then
 
   ac_save_ifs=$IFS
   IFS=':'
   for dir in $use_extra_libs; do
     extra_ldflags="$extra_ldflags -L$dir"
   done
   IFS=$ac_save_ifs
fi

extra_ldflags=`/usr/bin/uname -a | grep -q SunOS && echo -lrt`

dnl Checks for library -l socket.
AC_CHECK_LIB(socket, bind, extra_ldflags="$extra_ldflags -lsocket -lnsl")

dnl Checks for header files.
AC_SUBST(gnutls)
AC_SUBST(openssl)
AC_SUBST(extra_objs)
if [[ "$DISABLEGNUTLS" = "no" ]]; then
  AC_CHECK_HEADER(gnutls/gnutls.h, GNUTLS=yes, GNUTLS=no)
else
  GNUTLS=no
fi
if [[ "$GNUTLS" = "yes" ]]; then
  DISABLEOPENSSL=yes
fi
if [[ "$DISABLEOPENSSL" = "no" ]]; then
  AC_CHECK_HEADER(openssl/crypto.h, OPENSSL=yes, OPENSSL=no)
else
  OPENSSL=no
fi
if [[ "$OPENSSL" = "no" ]]; then
  extra_objs="md5.o"
fi

AC_SUBST(linux_pthread)
AC_TRY_COMPILE([#define _GNU_SOURCE
#include <pthread.h>
] , [pthread_mutexattr_t attr;
    pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);]
  , linux_pthread="yes")
if [[ -n "$linux_pthread" ]]; then
   linux_pthread="#define LINUX_PTHREAD"
fi

LDFLAGS=-lpthread
AC_TRY_LINK([#include <pthread.h>
void * thread_func(void * param) { return NULL; }
] , [pthread_t thread_info;
     pthread_attr_t attr;
     pthread_create(&thread_info, &attr, &thread_func, NULL);]
  , extra_ldflags="$extra_ldflags -lpthread"
  , extra_ldflags="$extra_ldflags -pthread")

AC_SUBST(crypt_ldflags)
crypt_ldflags="$extra_ldflags"
if [[ "$GNUTLS" = "no" ]]; then
  gnutls=""
else
  gnutls="#define USE_GNUTLS"
  crypt_ldflags="$extra_ldflags -lgnutls -lgcrypt"
fi
if [[ "$OPENSSL" = "no" ]]; then
  openssl=""
else
  openssl="#define USE_OPENSSL"
  crypt_ldflags="$extra_ldflags -lssl -lcrypto"
fi

AC_SUBST(large_file)
large_file=""

AC_SUBST(socklen_t)
AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>
] , [socklen_t * namelen;], , no_socklen_t="true")
if [[ -n "$no_socklen_t" ]]; then
  socklen_t="#define socklen_t int"
fi

AC_CHECK_HEADERS(vector ext/hash_map)

dnl Checks for library functions.

AC_OUTPUT(Makefile postal.h port.h postal.spec sun/pkginfo)