odnl> Do not add anything above
AC_INIT([edge],@N2N_VERSION_SHORT@)
dnl> Do not add anything above

N2N_VERSION_SHORT=${PACKAGE_VERSION}

if test -d ".git"; then
# NOTE: keep in sync with the definitions for configure.in files under the packages folder
GIT_COMMITS=`git rev-list --count HEAD`
GIT_REVISION=`git rev-parse --short HEAD`
GIT_RELEASE="${N2N_VERSION_SHORT}_r${GIT_COMMITS}_${GIT_REVISION}"
else
GIT_RELEASE=${N2N_VERSION_SHORT}
fi

N2N_LIBS=

AC_PROG_CC
AC_CHECK_LIB([zstd], [ZSTD_compress])

if test "x$ac_cv_lib_zstd_ZSTD_compress" != xyes; then
  AC_MSG_RESULT(Building n2n without ZSTD support)
else
  AC_DEFINE([N2N_HAVE_ZSTD], [], [Have ZSTD support])
  N2N_LIBS="-lzstd ${N2N_LIBS}"
fi

AC_CHECK_LIB([crypto], [AES_cbc_encrypt])

if test "x$ac_cv_lib_crypto_AES_cbc_encrypt" != xyes; then
  AC_MSG_RESULT(Building n2n without AES support)
else
  AC_DEFINE([N2N_HAVE_AES], [], [Have AES support])
  N2N_LIBS="-lcrypto ${N2N_LIBS}"
fi

AC_CHECK_LIB([crypto], [EVP_CIPHER_CTX_reset])

if test "x$ac_cv_lib_crypto_EVP_CIPHER_CTX_reset" != xyes; then
  AC_MSG_RESULT(Building n2n without ChaCha20 support)
else
  AC_MSG_RESULT(checking for ChaCha20_encrypt in -lcrypto... yes)
  AC_DEFINE([N2N_HAVE_CC20], [], [Have ChaCha20 support])
  N2N_LIBS="-lcrypto ${N2N_LIBS}"
fi

OLD_CFLAGS="${CFLAGS}"
OLD_LDFLAGS="${LDFLAGS}"

CFLAGS="${CFLAGS} -I/usr/local/opt/openssl@1.1/include"
LDFLAGS="${LDFLAGS} -L/usr/local/opt/openssl@1.1/lib/"
#AC_CHECK_LIB([crypto], [EVP_CIPHER_CTX_reset])
if test "x$ac_cv_lib_crypto_EVP_CIPHER_CTX_reset" != xyes; then
   CFLAGS="${OLD_CFLAGS}"
   LDFLAGS="${OLD_LDFLAGS}"
else
   AC_DEFINE([HAVE_OPENSSL_1_1], [], [OpenSSL 1.1 is present])
fi

AC_CHECK_LIB([pcap], [pcap_open_live], pcap=true)

if test x$pcap != x; then
  AC_DEFINE([N2N_HAVE_PCAP], [], [Have PCAP library])
  ADDITIONAL_TOOLS="$ADDITIONAL_TOOLS n2n-decode"
fi

AC_CHECK_LIB([pcap], [pcap_set_immediate_mode], pcap_immediate_mode=true)

if test x$pcap_immediate_mode != x; then
  AC_DEFINE([HAVE_PCAP_IMMEDIATE_MODE], [], [Have pcap_immediate_mode])
fi

AC_CHECK_LIB([cap], [cap_get_proc], cap=true)
if test x$cap != x; then
  LDFLAGS="${LDFLAGS} -lcap"
  AC_DEFINE([HAVE_LIBCAP],[1],[Support for linux capabilities])
fi

MACHINE=`uname -m`
SYSTEM=`uname -s`

if test $SYSTEM = "Linux"; then
   if test -f /etc/debian_version; then
      DEBIAN_VERSION=`cat /etc/debian_version`
      OSNAME="Debian $DEBIAN_VERSION"
   else
      OSNAME=`./config.guess`
   fi
else
dnl> wget -O config.guess 'http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD'
   OSNAME=`./config.guess`
fi
AC_DEFINE_UNQUOTED(PACKAGE_OSNAME, "${OSNAME}", [OS name])
AC_DEFINE_UNQUOTED(GIT_RELEASE, "${GIT_RELEASE}", [GIT release])

if test $MACHINE = "x86_64"; then
   EXTN="amd64"
else
   if test $MACHINE = "i686"; then
     EXTN="i386"
   fi
fi

DATE=`date +"%Y-%m-%d"`

AC_SUBST(CC)
AC_SUBST(CFLAGS)
AC_SUBST(LDFLAGS)
AC_SUBST(N2N_MAJOR)
AC_SUBST(N2N_MINOR)
AC_SUBST(N2N_PATCH)
AC_SUBST(N2N_VERSION_SHORT)
AC_SUBST(GIT_COMMITS)
AC_SUBST(GIT_REVISION)
AC_SUBST(GIT_RELEASE)
AC_SUBST(N2N_DEFINES)
AC_SUBST(N2N_LIBS)
AC_SUBST(ADDITIONAL_TOOLS)
AC_CONFIG_HEADERS(include/config.h)
AC_CONFIG_FILES(Makefile)
AC_CONFIG_FILES(tools/Makefile)

AC_OUTPUT