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