nut-debian/m4/nut_check_libnetsnmp.m4

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dnl Check for LIBNETSNMP compiler flags. On success, set
dnl nut_have_libnetsnmp="yes" and set LIBNETSNMP_CFLAGS and
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dnl LIBNETSNMP_LIBS. On failure, set nut_have_libnetsnmp="no".
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dnl This macro can be run multiple times, but will do the
dnl checking only once.
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AC_DEFUN([NUT_CHECK_LIBNETSNMP],
[
if test -z "${nut_have_libnetsnmp_seen}"; then
nut_have_libnetsnmp_seen=yes
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NUT_CHECK_PKGCONFIG
AC_LANG_PUSH([C])
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dnl save CFLAGS and LIBS
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CFLAGS_ORIG="${CFLAGS}"
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LIBS_ORIG="${LIBS}"
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dnl We prefer to get info from pkg-config (for suitable arch/bitness as
dnl specified in args for that mechanism), unless (legacy) a particular
dnl --with-net-snmp-config=... was requested. If there is no pkg-config
dnl info, we fall back to detecting and running a NET_SNMP_CONFIG as well.
dnl By default seek in PATH, but which variant (if several are provided)?
AC_CHECK_SIZEOF([void *])
NET_SNMP_CONFIG="none"
AS_CASE(["${ac_cv_sizeof_void_p}"],
[4],[AC_PATH_PROGS([NET_SNMP_CONFIG], [net-snmp-config-32 net-snmp-config], [none])],
[8],[AC_PATH_PROGS([NET_SNMP_CONFIG], [net-snmp-config-64 net-snmp-config], [none])],
[AC_PATH_PROGS([NET_SNMP_CONFIG], [net-snmp-config], [none])]
)
prefer_NET_SNMP_CONFIG=false
AC_ARG_WITH(net-snmp-config,
AS_HELP_STRING([@<:@--with-net-snmp-config=/path/to/net-snmp-config@:>@],
[path to program that reports Net-SNMP configuration]),
[
case "${withval}" in
""|yes) prefer_NET_SNMP_CONFIG=true ;;
no)
dnl AC_MSG_ERROR(invalid option --with(out)-net-snmp-config - see docs/configure.txt)
prefer_NET_SNMP_CONFIG=false
;;
*)
NET_SNMP_CONFIG="${withval}"
prefer_NET_SNMP_CONFIG=true
;;
esac
])
if test x"$have_PKG_CONFIG" = xyes && ! "${prefer_NET_SNMP_CONFIG}" ; then
AC_MSG_CHECKING(for Net-SNMP version via pkg-config)
dnl TODO? Loop over possible/historic pkg names, like
dnl netsnmp, net-snmp, ucd-snmp, libsnmp, snmp...
SNMP_VERSION="`$PKG_CONFIG --silence-errors --modversion netsnmp 2>/dev/null`"
if test "$?" = "0" -a -n "${SNMP_VERSION}" ; then
AC_MSG_RESULT(${SNMP_VERSION} found)
else
AC_MSG_RESULT(none found)
prefer_NET_SNMP_CONFIG=true
fi
fi
if test "$NET_SNMP_CONFIG" = none ; then
prefer_NET_SNMP_CONFIG=false
fi
if "${prefer_NET_SNMP_CONFIG}" ; then
dnl See which version of the Net-SNMP library (if any) is installed
AC_MSG_CHECKING(for Net-SNMP version via ${NET_SNMP_CONFIG})
SNMP_VERSION="`${NET_SNMP_CONFIG} --version 2>/dev/null`"
if test "$?" != "0" -o -z "${SNMP_VERSION}"; then
SNMP_VERSION="none"
prefer_NET_SNMP_CONFIG=false
fi
AC_MSG_RESULT(${SNMP_VERSION} found)
fi
if test x"$have_PKG_CONFIG" != xyes && ! "${prefer_NET_SNMP_CONFIG}" ; then
AC_MSG_WARN([did not find either net-snmp-config or pkg-config for net-snmp])
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fi
AC_MSG_CHECKING(for Net-SNMP cflags)
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AC_ARG_WITH(snmp-includes,
AS_HELP_STRING([@<:@--with-snmp-includes=CFLAGS@:>@], [include flags for the Net-SNMP library]),
[
case "${withval}" in
yes|no)
AC_MSG_ERROR(invalid option --with(out)-snmp-includes - see docs/configure.txt)
;;
*)
CFLAGS="${withval}"
;;
esac
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], [AS_IF(["${prefer_NET_SNMP_CONFIG}"],
[CFLAGS="`${NET_SNMP_CONFIG} --base-cflags 2>/dev/null`"],
[AS_IF([test x"$have_PKG_CONFIG" = xyes],
[CFLAGS="`$PKG_CONFIG --silence-errors --cflags netsnmp 2>/dev/null`"]
)]
)]
)
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AC_MSG_RESULT([${CFLAGS}])
AC_MSG_CHECKING(for Net-SNMP libs)
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AC_ARG_WITH(snmp-libs,
AS_HELP_STRING([@<:@--with-snmp-libs=LIBS@:>@], [linker flags for the Net-SNMP library]),
[
case "${withval}" in
yes|no)
AC_MSG_ERROR(invalid option --with(out)-snmp-libs - see docs/configure.txt)
;;
*)
LIBS="${withval}"
;;
esac
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], [AS_IF(["${prefer_NET_SNMP_CONFIG}"],
[LIBS="`${NET_SNMP_CONFIG} --libs 2>/dev/null`"],
[AS_IF([test x"$have_PKG_CONFIG" = xyes],
[LIBS="`$PKG_CONFIG --silence-errors --libs netsnmp 2>/dev/null`"],
[LIBS="-lnetsnmp"])]
)]
)
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AC_MSG_RESULT([${LIBS}])
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dnl Check if the Net-SNMP library is usable
AC_CHECK_HEADERS(net-snmp/net-snmp-config.h, [nut_have_libnetsnmp=yes], [nut_have_libnetsnmp=no], [AC_INCLUDES_DEFAULT])
AC_CHECK_FUNCS(init_snmp, [], [nut_have_libnetsnmp=no])
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AS_IF([test "${nut_have_libnetsnmp}" = "yes"], [
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LIBNETSNMP_CFLAGS="${CFLAGS}"
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LIBNETSNMP_LIBS="${LIBS}"
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AC_MSG_CHECKING([for defined usmAESPrivProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmAESPrivProtocol;
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAESPrivProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAESPrivProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmAES128PrivProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmAES128PrivProtocol;
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAES128PrivProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAES128PrivProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmDESPrivProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmDESPrivProtocol;
#ifdef NETSNMP_DISABLE_DES
#error "NETSNMP_DISABLE_DES is defined"
#endif
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmDESPrivProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmDESPrivProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmHMAC256SHA384AuthProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmHMAC256SHA384AuthProtocol;
#ifndef HAVE_EVP_SHA384
#error "HAVE_EVP_SHA384 is NOT defined"
#endif
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMAC256SHA384AuthProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMAC256SHA384AuthProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmHMAC384SHA512AuthProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmHMAC384SHA512AuthProtocol;
#ifndef HAVE_EVP_SHA384
#error "HAVE_EVP_SHA384 is NOT defined"
#endif
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMAC384SHA512AuthProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMAC384SHA512AuthProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmHMAC192SHA256AuthProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmHMAC192SHA256AuthProtocol;
#ifndef HAVE_EVP_SHA224
#error "HAVE_EVP_SHA224 is NOT defined"
#endif
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMAC192SHA256AuthProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMAC192SHA256AuthProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmAES192PrivProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmAES192PrivProtocol;
#ifndef NETSNMP_DRAFT_BLUMENTHAL_AES_04
#error "NETSNMP_DRAFT_BLUMENTHAL_AES_04 is NOT defined"
#endif
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAES192PrivProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAES192PrivProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmAES256PrivProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmAES256PrivProtocol;
#ifndef NETSNMP_DRAFT_BLUMENTHAL_AES_04
#error "NETSNMP_DRAFT_BLUMENTHAL_AES_04 is NOT defined"
#endif
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAES256PrivProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmAES256PrivProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmHMACMD5AuthProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmHMACMD5AuthProtocol;
#ifdef NETSNMP_DISABLE_MD5
#error "NETSNMP_DISABLE_MD5 is defined"
#endif
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMACMD5AuthProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMACMD5AuthProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined usmHMACSHA1AuthProtocol])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
oid * pProto = usmHMACSHA1AuthProtocol;
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMACSHA1AuthProtocol, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_usmHMACSHA1AuthProtocol, 0, [Variable or macro by this name is not resolvable])
])
AC_MSG_CHECKING([for defined NETSNMP_DRAFT_BLUMENTHAL_AES_04])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
int num = NETSNMP_DRAFT_BLUMENTHAL_AES_04 + 1; /* if defined, NETSNMP_DRAFT_BLUMENTHAL_AES_04 is 1 */
],
[]
)],
[AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_DRAFT_BLUMENTHAL_AES_04, 1, [Variable or macro by this name is resolvable])
],
[AC_MSG_RESULT([no])
AC_DEFINE_UNQUOTED(NUT_HAVE_LIBNETSNMP_DRAFT_BLUMENTHAL_AES_04, 0, [Variable or macro by this name is not resolvable])
])
])
AC_LANG_POP([C])
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dnl restore original CFLAGS and LIBS
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CFLAGS="${CFLAGS_ORIG}"
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LIBS="${LIBS_ORIG}"
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fi
])