configure.in

AC_INIT(src/packet.c)
AC_CONFIG_AUX_DIR(build)
AM_INIT_AUTOMAKE(dssl, 2.1.1)

AC_PROG_INSTALL

AC_PROG_CC
AC_LANG_C

AC_HEADER_STDC

AC_DISABLE_SHARED
AC_PROG_LIBTOOL

# Define CXXFLAGS before AC_PROG_CXX to suppress the default autoconf
# compiler options
# _SYS_MD5_H is required to avoid conflict between OpenSSL and sys/md5.h MD5_CTX
CFLAGS="${CFLAGS} -DDSSL -D_SYS_MD5_H"

AC_ARG_ENABLE(
	examples-build,
	AS_HELP_STRING(
	  [--enable-examples-build],
	  [enable build of examples @<:@enabled@:>@]
	),
	,
	enable_examples_build="yes"
)

# introduce the optional configure parameter for OpenSSL library location
AC_ARG_WITH(openssl,
	AC_HELP_STRING(
	    [--with-openssl=prefix],
	    [Specify OpenSSL  installation directory. If not set, /usr/local/ssl is used by default]
	  ),
	  OPENSSL_PATHSET=1,
	  OPENSSL_PATHSET=0
)

# add OpenSSL to include path
if test  $OPENSSL_PATHSET = 1 ; then
   	 OPENSSL_PATH=$with_openssl
else
	OPENSSL_PATH="/usr/local/ssl"
fi

CFLAGS="$CFLAGS -I$OPENSSL_PATH/include"
LDFLAGS="$LDFLAGS -L$OPENSSL_PATH/lib"

AC_CHECK_HEADERS([arpa/inet.h inttypes.h netinet/in.h stdlib.h string.h sys/time.h])

AC_CHECK_HEADER([pcap.h],,[AC_MSG_ERROR([libpcap header file not found. Install libpcap from http://www.tcpdump.org])])
AC_CHECK_HEADER([zlib.h],,[AC_MSG_ERROR([zlib header file not found. Install zlib from http://www.zlib.net])])

AC_CHECK_HEADER([openssl/ssl.h],,[AC_MSG_ERROR([OpenSSL library header not found. Install OpenSSL from http://www.openssl.org])])


AC_ARG_ENABLE(debug,
[  --enable-debug           Build a debug version of DSSL library ],
                [ if test -n "$GCC"; then
                    CFLAGS="$CFLAGS -O0 -D_DEBUG -ggdb"
                  else
                    CFLAGS="$CFLAGS -D_DEBUG"
                  fi
                ], [CFLAGS="$CFLAGS -O2 -DNDEBUG"] )

AC_CHECK_LIB([dl],[dlopen],[DL_LIBS="-ldl"])
LIBS="-lz -lssl -lcrypto $DL_LIBS $LIBS"

AM_CONDITIONAL([ENABLE_EXAMPLES_BUILD], [test "${enable_examples_build}" != "no"])

AC_CONFIG_FILES([Makefile src/Makefile samples/Makefile tests/Makefile])
AC_OUTPUT