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- From: Jo-Philipp Wich <jo@mein.io>
- Date: Fri, 6 Jan 2017 13:41:00 +0100
- Subject: [PATCH] configure: allow overriding hardcoded /usr/include/libnl3
- In a cross-compile setting we do not want to probe the host systems
- /usr/include path, therfore allow to disable this include path by passing
- ac_cv_header_netlink_netlink_h=yes to configure.
- Also disable the testing for libraries providing nl_connect when
- netsnmp_cv_func_nl_connect_LIBS is predefined since the proprietary
- NETSNMP_SEARCH_LIBS() macro will clobber the internal link flags upon
- encountering predefined cache variables, causing all subsequent configure
- link tests to fail due to a stray "no" word getting passed to the linker.
- Signed-off-by: Jo-Philipp Wich <jo@mein.io>
- --- a/configure.d/config_os_libs2
- +++ b/configure.d/config_os_libs2
- @@ -226,14 +226,22 @@ if test "x$with_nl" != "xno"; then
- case $target_os in
- linux*) # Check for libnl (linux)
- netsnmp_save_CPPFLAGS="$CPPFLAGS"
- - CPPFLAGS="-I/usr/include/libnl3 $CPPFLAGS"
- - NETSNMP_SEARCH_LIBS(nl_connect, nl-3,
- - [AC_CHECK_HEADERS(netlink/netlink.h)
- - EXTERNAL_MIBGROUP_INCLUDES="$EXTERNAL_MIBGROUP_INCLUDES -I/usr/include/libnl3"],
- - [CPPFLAGS="$netsnmp_save_CPPFLAGS"], [], [], [LMIBLIBS])
- + netsnmp_netlink_include_flags=""
- if test "x$ac_cv_header_netlink_netlink_h" != xyes; then
- - NETSNMP_SEARCH_LIBS(nl_connect, nl, [
- - AC_CHECK_HEADERS(netlink/netlink.h)], [], [], LMIBLIBS)
- + netsnmp_netlink_include_flags="-I/usr/include/libnl3"
- + fi
- + CPPFLAGS="$netsnmp_netlink_include_flags $CPPFLAGS"
- + if test "x$netsnmp_cv_func_nl_connect_LIBS" = x; then
- + NETSNMP_SEARCH_LIBS(nl_connect, nl-3,
- + [AC_CHECK_HEADERS(netlink/netlink.h)
- + EXTERNAL_MIBGROUP_INCLUDES="$EXTERNAL_MIBGROUP_INCLUDES $netsnmp_netlink_include_flags"],
- + [CPPFLAGS="$netsnmp_save_CPPFLAGS"], [], [], [LMIBLIBS])
- + if test "x$ac_cv_header_netlink_netlink_h" != xyes; then
- + NETSNMP_SEARCH_LIBS(nl_connect, nl, [
- + AC_CHECK_HEADERS(netlink/netlink.h)], [], [], LMIBLIBS)
- + fi
- + else
- + LMIBLIBS="$LMIBLIBS $netsnmp_cv_func_nl_connect_LIBS"
- fi
- if test "x$ac_cv_header_netlink_netlink_h" = xyes; then
- AC_EGREP_HEADER([nl_socket_free], [netlink/socket.h],
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