AC_INIT([libndpi], [@NDPI_VERSION_SHORT@])

AC_CONFIG_AUX_DIR([.])
AC_CONFIG_MACRO_DIR([m4])

AM_INIT_AUTOMAKE([foreign subdir-objects])

AC_PREFIX_DEFAULT(/usr)

EXTRA_TARGETS="example tests tests/unit tests/dga"
AC_ARG_WITH(only-libndpi,  AS_HELP_STRING([--with-only-libndpi], [Build only libndpi (no examples, tests etc)]))
AS_IF([test "${with_only_libndpi+set}" = set],[
  EXTRA_TARGETS=""
])

GNU_PREFIX=""

AC_ARG_WITH(mipsel,  AS_HELP_STRING([--with-mipsel], [Build only libndpi (no examples, tests etc) for mipsel]))
AS_IF([test "${with_mipsel+set}" = set],[
  EXTRA_TARGETS=""
  GNU_PREFIX="mipsel-linux-gnu-"
])

AC_ARG_WITH(sanitizer,     AS_HELP_STRING([--with-sanitizer], [Build with support for address, undefined and leak sanitizer]))
AC_ARG_ENABLE(fuzztargets, AS_HELP_STRING([--enable-fuzztargets], [Enable fuzz targets]),[enable_fuzztargets=$enableval],[enable_fuzztargets=no])
AM_CONDITIONAL([BUILD_FUZZTARGETS], [test "x$enable_fuzztargets" = "xyes"])

AS_IF([test "${with_sanitizer+set}" = set],[
  CFLAGS="${CFLAGS} -g3 -O0 -Wno-unused-value -fsanitize=address -fsanitize=undefined -fno-sanitize=alignment -fsanitize=leak -fno-omit-frame-pointer"
  LDFLAGS="${LDFLAGS} -fsanitize=address -fsanitize=undefined -fno-sanitize=alignment -fsanitize=leak"
])

LT_INIT

SYSTEM=`uname -s`
if test $SYSTEM = "Darwin"; then
dnl>  AC_PROG_CC(clang gcc)
  AM_PROG_CC_C_O(clang gcc)
  AC_PROG_CXX(clang++ g++)
  AC_PROG_CC_STDC(clang gcc)
else
dnl>  AC_PROG_CC
  AM_PROG_CC_C_O
  AC_PROG_CXX
  AC_PROG_CC_STDC
fi
AC_LANG_WERROR
AX_PTHREAD

NDPI_VERSION_SHORT="@NDPI_VERSION_SHORT@"
NDPI_MAJOR="@NDPI_MAJOR@"
NDPI_MINOR="@NDPI_MINOR@"
NDPI_PATCH="@NDPI_PATCH@"

AC_DEFINE_UNQUOTED(NDPI_MAJOR_RELEASE, "${NDPI_MAJOR}", [nDPI major release])
AC_DEFINE_UNQUOTED(NDPI_MINOR_RELEASE, "${NDPI_MINOR}", [nDPI minor release])
AC_DEFINE_UNQUOTED(NDPI_PATCH_LEVEL,   "${NDPI_PATCH}", [nDPI patch level])

# .git as directory in a cloned repo
# .git as file in submodule based integration
if test -d ".git" || test -f ".git" ; then :
     GIT_TAG=`git log -1 --format=%h`
     GIT_DATE=`git log -1 --format=%cd`
     #
     # On CentOS 6 `git rev-list HEAD --count` does not work
     #
     #
     GIT_NUM=`git log --pretty=oneline | wc -l | tr -d '[[:space:]]'`
     GIT_RELEASE="${PACKAGE_VERSION}-${GIT_NUM}-${GIT_TAG}"

     A=`git log src/include/ndpi_typedefs.h|wc -l`
     B=`git log src/include/ndpi_protocol_ids.h|wc -l`
     C=`git log src/include/ndpi_api.h.in|wc -l`
     NDPI_API_VERSION=$((A+B+C))
else
     GIT_RELEASE="${PACKAGE_VERSION}"
     GIT_DATE=`date -u -r CHANGELOG.md`
     NDPI_API_VERSION=`date +%s | cut -c7-10`
fi

NDPI_API_VERSION=`echo $NDPI_API_VERSION | sed 's/^0*//'`

AC_DEFINE_UNQUOTED(NDPI_GIT_RELEASE, "${GIT_RELEASE}", [GIT Release])
AC_DEFINE_UNQUOTED(NDPI_GIT_DATE, "${GIT_DATE}", [Last GIT change])

if ! test "${with_mipsel+set}" = set; then :
   dnl> used by json-c for unit tests
   PKG_CHECK_MODULES([JSONC], [json-c], [JSONC_LIBS=`pkg-config --libs json-c` JSONC_CFLAGS=`pkg-config --cflags json-c`])
fi

LIBS="$LIBS $JSONC_LIBS"
CFLAGS="$CFLAGS $JSONC_CFLAGS"

AC_CHECK_HEADERS([netinet/in.h stdint.h stdlib.h string.h unistd.h json.h])

ADDITIONAL_LIBS=
PCAP_HOME=$HOME/PF_RING/userland

DPDK_TARGET=
AC_MSG_CHECKING([DPDK (used by ndpiReader)])
if test -d $HOME/DPDK; then :
      AC_MSG_RESULT(yes)
     DPDK_TARGET=dpdk
else
     AC_MSG_RESULT([no (missing $HOME/DPDK)])
fi

if ! test -d $PCAP_HOME; then :
     PCAP_HOME=`pwd`/../../PF_RING/userland
fi
SHORT_MACHINE=`uname -m | cut -b1-3`
if test $SHORT_MACHINE = "arm"; then
     LIBNUMA=""
else
     AC_CHECK_LIB([numa], [numa_available], [LIBNUMA="-lnuma"])
fi

MACHINE=`uname -m`

CUSTOM_NDPI=

if test -d ../nDPI-custom; then :
   CUSTOM_NDPI="-DCUSTOM_NDPI_PROTOCOLS"
   AC_MSG_RESULT([Compiling with custom nDPI protocols])
fi

case "$host" in
   *-*-mingw32*|*-*-msys)
      CFLAGS="${CFLAGS} -DOS_WIN32"
      LDFLAGS="${LDFLAGS} -lws2_32 -lucrtbase"
      BUILD_MINGW=1
      ;;
   *)
      if test -f $PCAP_HOME/libpcap/libpcap.a; then :
         echo "Using libpcap from $PCAP_HOME"
         PCAP_INC="-I $PCAP_HOME/libpcap"
         PCAP_LIB="$PCAP_HOME/libpcap/libpcap.a $PCAP_HOME/lib/libpfring.a $LIBNUMA `$PCAP_HOME/lib/pfring_config --libs`"
	 AC_CHECK_LIB([rt], [clock_gettime],   [PCAP_LIB="$PCAP_LIB -lrt"])
         AC_CHECK_LIB([nl], [nl_handle_alloc], [PCAP_LIB="$PCAP_LIB -lnl"])
         # The dlopen() function is in libdl on GLIBC-based systems
         # and in the C library for *BSD systems
         AC_CHECK_LIB([dl], [dlopen, dlsym],   [DL_LIB="-ldl"],[AC_CHECK_LIB([c], [dlopen, dlsym], [DL_LIB="-lc"],[AC_MSG_ERROR([unable to find the dlopen(), dlsym() functions]) ]) ])
      else
         AC_CHECK_LIB([pcap], [pcap_open_live], [PCAP_LIB="-lpcap"])
	 if test $ac_cv_lib_pcap_pcap_open_live = "no"; then :
            echo ""
            echo "ERROR: Missing libpcap(-dev) library required to compile the example application"
            echo "ERROR: Please install it and try again"
            exit
	 fi
      fi
      ;;
esac

AC_ARG_ENABLE([debug-messages],
    AS_HELP_STRING([--enable-debug-messages], [Define NDPI_ENABLE_DEBUG_MESSAGES=1]), [
	AC_DEFINE(NDPI_ENABLE_DEBUG_MESSAGES, 1, [Enable ndpi_debug_messages]) ])

@FUZZY@ AS_IF([test "x$enable_fuzztargets" = "xyes"], [
@FUZZY@     AC_PROG_CXX
@FUZZY@     AC_LANG_PUSH(C++)
@FUZZY@     tmp_saved_flags=$[]_AC_LANG_PREFIX[]FLAGS
@FUZZY@     AX_CHECK_COMPILE_FLAG([-fsanitize=fuzzer],,
@FUZZY@         [AC_MSG_ERROR([--enable-fuzztargets requires -fsanitize=fuzzer which is only supported by LLVM])],
@FUZZY@         [-Werror])
@FUZZY@     AS_IF([test "x$LIB_FUZZING_ENGINE" = "x"], [
@FUZZY@         LIB_FUZZING_ENGINE=-fsanitize=fuzzer
@FUZZY@         AC_SUBST(LIB_FUZZING_ENGINE)
@FUZZY@     ])
@FUZZY@     _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $LIB_FUZZING_ENGINE"
@FUZZY@     AC_MSG_CHECKING([whether $CXX accepts $LIB_FUZZING_ENGINE])
@FUZZY@     AC_LINK_IFELSE([AC_LANG_SOURCE([[
@FUZZY@ #include <sys/types.h>
@FUZZY@ extern "C" int LLVMFuzzerTestOneInput(const unsigned char *Data, size_t Size);
@FUZZY@ extern "C" int LLVMFuzzerTestOneInput(const unsigned char *Data, size_t Size) {
@FUZZY@ (void)Data;
@FUZZY@ (void)Size;
@FUZZY@ return 0;
@FUZZY@ }
@FUZZY@         ]])],
@FUZZY@         [ AC_MSG_RESULT(yes)
@FUZZY@           has_sanitizefuzzer=yes],
@FUZZY@         [ AC_MSG_RESULT(no) ]
@FUZZY@     )
@FUZZY@     _AC_LANG_PREFIX[]FLAGS=$tmp_saved_flags
@FUZZY@     AC_LANG_POP()
@FUZZY@ ])
AM_CONDITIONAL([HAS_FUZZLDFLAGS], [test "x$has_sanitizefuzzer" = "xyes"])

AC_CHECK_LIB(pthread, pthread_setaffinity_np, AC_DEFINE_UNQUOTED(HAVE_PTHREAD_SETAFFINITY_NP, 1, [libc has pthread_setaffinity_np]))

dnl> GCRYPT
GCRYPT_ENABLED=1
AC_ARG_ENABLE([gcrypt],
  [AS_HELP_STRING([--disable-gcrypt], [Avoid compiling with libgcrypt/libgpg-error, even if they are present. QUIC sub-classification may be missing])],
  [GCRYPT_ENABLED=0],
  [AC_CHECK_LIB(gcrypt, gcry_cipher_checktag)])
AS_IF([test "x$enable_gcrypt" = "xyes"], [
  if test "x$ac_cv_lib_gcrypt_gcry_cipher_checktag" = xyes; then :
    ADDITIONAL_LIBS="${ADDITIONAL_LIBS} -lgcrypt"
  else
    $as_unset ac_cv_lib_gcrypt_gcry_cipher_checktag
    AC_CHECK_LIB(gpg-error, gpg_strerror_r)
    AC_CHECK_LIB(gcrypt, gcry_cipher_checktag)
    if test "x$ac_cv_lib_gcrypt_gcry_cipher_checktag" = xyes -a "x$ac_cv_lib_gpg_error_gpg_strerror_r" = xyes; then :
      ADDITIONAL_LIBS="${ADDITIONAL_LIBS} -lgcrypt -lgpg-error"
    fi
  fi
])

dnl> PCRE
AC_ARG_WITH(pcre,          [  --with-pcre        Enable nDPI build with libpcre])
if test "${with_pcre+set}" = set; then :
  AC_CHECK_LIB(pcre, pcre_compile, AC_DEFINE_UNQUOTED(HAVE_PCRE, 1, [libpcre(-dev) is present]))
  if test "x$ac_cv_lib_pcre_pcre_compile" = xyes; then :
    ADDITIONAL_LIBS="${ADDITIONAL_LIBS} -lpcre"
  fi
fi


AC_CONFIG_FILES([Makefile example/Makefile example/Makefile.dpdk tests/Makefile tests/unit/Makefile tests/dga/Makefile libndpi.pc src/include/ndpi_define.h src/lib/Makefile python/Makefile fuzz/Makefile src/include/ndpi_api.h])
AC_CONFIG_FILES([tests/do.sh], [chmod +x tests/do.sh])
AC_CONFIG_FILES([tests/do_valgrind.sh], [chmod +x tests/do_valgrind.sh])
AC_CONFIG_HEADERS(src/include/ndpi_config.h)
AC_SUBST(GIT_RELEASE)
AC_SUBST(NDPI_MAJOR)
AC_SUBST(NDPI_MINOR)
AC_SUBST(NDPI_PATCH)
AC_SUBST(NDPI_VERSION_SHORT)
AC_SUBST(PCAP_INC)
AC_SUBST(PCAP_LIB)
AC_SUBST(ADDITIONAL_LIBS)
AC_SUBST(DL_LIB)
AC_SUBST(DPDK_TARGET)
AC_SUBST(HAVE_PTHREAD_SETAFFINITY_NP)
AC_SUBST(CUSTOM_NDPI)
AC_SUBST(NDPI_API_VERSION)
AC_SUBST(EXTRA_TARGETS)
AC_SUBST(BUILD_MINGW)
AC_SUBST(JSONC_CFLAGS)
AC_SUBST(JSONC_LIBS)
AC_SUBST(GCRYPT_ENABLED)
AC_SUBST(GNU_PREFIX)
AC_OUTPUT