![Julien Floret](/assets/img/avatar_default.png)
libnl3 include path was hardcoded in the configure script, causing the following gcc warning: WARNING: unsafe header/library path used in cross-compilation: '/usr/include/libnl3' Let's apply an upstream patch that addresses the issue: now pkg-config is used to detect libnl include path. Also: - add optional libnl build dependency; - enable libnl support only when libnl package is selected. Signed-off-by: Julien Floret <julien.floret@6wind.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
301 lines
11 KiB
Diff
301 lines
11 KiB
Diff
From 57d6c3d36045aab8957ffeb7324728bf17faf8bd Mon Sep 17 00:00:00 2001
|
|
From: Bart Van Assche <bvanassche@acm.org>
|
|
Date: Mon, 2 Feb 2015 20:31:29 +0100
|
|
Subject: [PATCH] configure: Eliminate the hard-coded libnl-3 include path
|
|
|
|
See also commit 3dde41998625fe0e24119a2e1f4509ba3ba2fd9a.
|
|
|
|
(cherry picked from commit 852dcd644cfe4cfc7177649eaec163d6221f2be1)
|
|
|
|
Original commit included modifications to configure script.
|
|
Do not keep these modifications, since they caused lots of conflicts, and
|
|
configure script is meant to be automatically generated.
|
|
|
|
Signed-off-by: Julien Floret <julien.floret@6wind.com>
|
|
|
|
Conflicts:
|
|
configure
|
|
---
|
|
aclocal.m4 | 1 +
|
|
configure.d/config_os_libs2 | 30 ++++++-
|
|
m4/pkg.m4 | 214 ++++++++++++++++++++++++++++++++++++++++++++
|
|
3 files changed, 243 insertions(+), 2 deletions(-)
|
|
create mode 100644 m4/pkg.m4
|
|
|
|
diff --git a/aclocal.m4 b/aclocal.m4
|
|
index cd80c7486f2f..45e3608ed480 100644
|
|
--- a/aclocal.m4
|
|
+++ b/aclocal.m4
|
|
@@ -22,3 +22,4 @@ m4_include([m4/ltversion.m4])
|
|
m4_include([m4/lt~obsolete.m4])
|
|
m4_include([m4/netsnmp_arg.m4])
|
|
m4_include([m4/netsnmp_search_libs.m4])
|
|
+m4_include([m4/pkg.m4])
|
|
diff --git a/configure.d/config_os_libs2 b/configure.d/config_os_libs2
|
|
index 47491e24ce0a..10bd414b879e 100644
|
|
--- a/configure.d/config_os_libs2
|
|
+++ b/configure.d/config_os_libs2
|
|
@@ -225,11 +225,37 @@ fi
|
|
if test "x$with_nl" != "xno"; then
|
|
case $target_os in
|
|
linux*) # Check for libnl (linux)
|
|
+ # The test below verifies whether the libnl-3 package been installed.
|
|
+ # This test works as follows:
|
|
+ # - If pkg-config was not installed at the time autogen.sh was run,
|
|
+ # the definition of the PKG_CHECK_EXISTS() macro will not be found by
|
|
+ # autogen.sh. Augogen.sh will generate a configure script that prints
|
|
+ # a warning about pkg-config and proceeds as if libnl-3 has not been
|
|
+ # installed.
|
|
+ # - If pkg-config was installed at the time autogen.sh was run,
|
|
+ # the generated configure script will try to detect the presence of
|
|
+ # the libnl-3 library by looking up compile and linker flags in the
|
|
+ # file called libnl-3.pc.
|
|
+ # - pkg-config settings can be overridden via the configure variables
|
|
+ # LIBNL3_CFLAGS and LIBNL3_LIBS (added by the pkg-config m4 macro's to
|
|
+ # the configure script -- see also ./configure --help).
|
|
+ # - The LIBNL3_CFLAGS and LIBNL3_LIBS configure variables can be used
|
|
+ # even if the pkg-config executable is not present on the system on
|
|
+ # which the configure script is run.
|
|
+ ifdef(
|
|
+ [PKG_CHECK_EXISTS],
|
|
+ [PKG_CHECK_EXISTS([libnl-3.0],
|
|
+ [PKG_CHECK_MODULES([LIBNL3], [libnl-3.0])])
|
|
+ ],
|
|
+ AC_MSG_WARN([pkg-config has not been installed or is too old.])
|
|
+ AC_MSG_WARN([Detection of libnl-3.0 will be skipped.])
|
|
+ )
|
|
+
|
|
netsnmp_save_CPPFLAGS="$CPPFLAGS"
|
|
- CPPFLAGS="-I/usr/include/libnl3 $CPPFLAGS"
|
|
+ CPPFLAGS="${LIBNL3_CFLAGS} $CPPFLAGS"
|
|
NETSNMP_SEARCH_LIBS(nl_connect, nl-3,
|
|
[AC_CHECK_HEADERS(netlink/netlink.h)
|
|
- EXTERNAL_MIBGROUP_INCLUDES="$EXTERNAL_MIBGROUP_INCLUDES -I/usr/include/libnl3"],
|
|
+ EXTERNAL_MIBGROUP_INCLUDES="$EXTERNAL_MIBGROUP_INCLUDES ${LIBNL3_CFLAGS}"],
|
|
[CPPFLAGS="$netsnmp_save_CPPFLAGS"], [], [], [LMIBLIBS])
|
|
if test "x$ac_cv_header_netlink_netlink_h" != xyes; then
|
|
NETSNMP_SEARCH_LIBS(nl_connect, nl, [
|
|
diff --git a/m4/pkg.m4 b/m4/pkg.m4
|
|
new file mode 100644
|
|
index 000000000000..c5b26b52e6cd
|
|
--- /dev/null
|
|
+++ b/m4/pkg.m4
|
|
@@ -0,0 +1,214 @@
|
|
+# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
|
|
+# serial 1 (pkg-config-0.24)
|
|
+#
|
|
+# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
|
|
+#
|
|
+# This program is free software; you can redistribute it and/or modify
|
|
+# it under the terms of the GNU General Public License as published by
|
|
+# the Free Software Foundation; either version 2 of the License, or
|
|
+# (at your option) any later version.
|
|
+#
|
|
+# This program is distributed in the hope that it will be useful, but
|
|
+# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+# General Public License for more details.
|
|
+#
|
|
+# You should have received a copy of the GNU General Public License
|
|
+# along with this program; if not, write to the Free Software
|
|
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
+#
|
|
+# As a special exception to the GNU General Public License, if you
|
|
+# distribute this file as part of a program that contains a
|
|
+# configuration script generated by Autoconf, you may include it under
|
|
+# the same distribution terms that you use for the rest of that program.
|
|
+
|
|
+# PKG_PROG_PKG_CONFIG([MIN-VERSION])
|
|
+# ----------------------------------
|
|
+AC_DEFUN([PKG_PROG_PKG_CONFIG],
|
|
+[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
|
|
+m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
|
|
+m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
|
|
+AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
|
|
+AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
|
|
+AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
|
|
+
|
|
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
|
|
+ AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
|
|
+fi
|
|
+if test -n "$PKG_CONFIG"; then
|
|
+ _pkg_min_version=m4_default([$1], [0.9.0])
|
|
+ AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
|
|
+ if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
|
|
+ AC_MSG_RESULT([yes])
|
|
+ else
|
|
+ AC_MSG_RESULT([no])
|
|
+ PKG_CONFIG=""
|
|
+ fi
|
|
+fi[]dnl
|
|
+])# PKG_PROG_PKG_CONFIG
|
|
+
|
|
+# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
|
|
+#
|
|
+# Check to see whether a particular set of modules exists. Similar
|
|
+# to PKG_CHECK_MODULES(), but does not set variables or print errors.
|
|
+#
|
|
+# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
|
|
+# only at the first occurence in configure.ac, so if the first place
|
|
+# it's called might be skipped (such as if it is within an "if", you
|
|
+# have to call PKG_CHECK_EXISTS manually
|
|
+# --------------------------------------------------------------
|
|
+AC_DEFUN([PKG_CHECK_EXISTS],
|
|
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
|
|
+if test -n "$PKG_CONFIG" && \
|
|
+ AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
|
|
+ m4_default([$2], [:])
|
|
+m4_ifvaln([$3], [else
|
|
+ $3])dnl
|
|
+fi])
|
|
+
|
|
+# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
|
|
+# ---------------------------------------------
|
|
+m4_define([_PKG_CONFIG],
|
|
+[if test -n "$$1"; then
|
|
+ pkg_cv_[]$1="$$1"
|
|
+ elif test -n "$PKG_CONFIG"; then
|
|
+ PKG_CHECK_EXISTS([$3],
|
|
+ [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
|
|
+ test "x$?" != "x0" && pkg_failed=yes ],
|
|
+ [pkg_failed=yes])
|
|
+ else
|
|
+ pkg_failed=untried
|
|
+fi[]dnl
|
|
+])# _PKG_CONFIG
|
|
+
|
|
+# _PKG_SHORT_ERRORS_SUPPORTED
|
|
+# -----------------------------
|
|
+AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
|
|
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
|
|
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
|
|
+ _pkg_short_errors_supported=yes
|
|
+else
|
|
+ _pkg_short_errors_supported=no
|
|
+fi[]dnl
|
|
+])# _PKG_SHORT_ERRORS_SUPPORTED
|
|
+
|
|
+
|
|
+# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
|
|
+# [ACTION-IF-NOT-FOUND])
|
|
+#
|
|
+#
|
|
+# Note that if there is a possibility the first call to
|
|
+# PKG_CHECK_MODULES might not happen, you should be sure to include an
|
|
+# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
|
|
+#
|
|
+#
|
|
+# --------------------------------------------------------------
|
|
+AC_DEFUN([PKG_CHECK_MODULES],
|
|
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
|
|
+AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
|
|
+AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
|
|
+
|
|
+pkg_failed=no
|
|
+AC_MSG_CHECKING([for $1])
|
|
+
|
|
+_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
|
|
+_PKG_CONFIG([$1][_LIBS], [libs], [$2])
|
|
+
|
|
+m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
|
|
+and $1[]_LIBS to avoid the need to call pkg-config.
|
|
+See the pkg-config man page for more details.])
|
|
+
|
|
+if test $pkg_failed = yes; then
|
|
+ AC_MSG_RESULT([no])
|
|
+ _PKG_SHORT_ERRORS_SUPPORTED
|
|
+ if test $_pkg_short_errors_supported = yes; then
|
|
+ $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
|
|
+ else
|
|
+ $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
|
|
+ fi
|
|
+ # Put the nasty error message in config.log where it belongs
|
|
+ echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
|
|
+
|
|
+ m4_default([$4], [AC_MSG_ERROR(
|
|
+[Package requirements ($2) were not met:
|
|
+
|
|
+$$1_PKG_ERRORS
|
|
+
|
|
+Consider adjusting the PKG_CONFIG_PATH environment variable if you
|
|
+installed software in a non-standard prefix.
|
|
+
|
|
+_PKG_TEXT])[]dnl
|
|
+ ])
|
|
+elif test $pkg_failed = untried; then
|
|
+ AC_MSG_RESULT([no])
|
|
+ m4_default([$4], [AC_MSG_FAILURE(
|
|
+[The pkg-config script could not be found or is too old. Make sure it
|
|
+is in your PATH or set the PKG_CONFIG environment variable to the full
|
|
+path to pkg-config.
|
|
+
|
|
+_PKG_TEXT
|
|
+
|
|
+To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
|
|
+ ])
|
|
+else
|
|
+ $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
|
|
+ $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
|
|
+ AC_MSG_RESULT([yes])
|
|
+ $3
|
|
+fi[]dnl
|
|
+])# PKG_CHECK_MODULES
|
|
+
|
|
+
|
|
+# PKG_INSTALLDIR(DIRECTORY)
|
|
+# -------------------------
|
|
+# Substitutes the variable pkgconfigdir as the location where a module
|
|
+# should install pkg-config .pc files. By default the directory is
|
|
+# $libdir/pkgconfig, but the default can be changed by passing
|
|
+# DIRECTORY. The user can override through the --with-pkgconfigdir
|
|
+# parameter.
|
|
+AC_DEFUN([PKG_INSTALLDIR],
|
|
+[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
|
|
+m4_pushdef([pkg_description],
|
|
+ [pkg-config installation directory @<:@]pkg_default[@:>@])
|
|
+AC_ARG_WITH([pkgconfigdir],
|
|
+ [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
|
|
+ [with_pkgconfigdir=]pkg_default)
|
|
+AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
|
|
+m4_popdef([pkg_default])
|
|
+m4_popdef([pkg_description])
|
|
+]) dnl PKG_INSTALLDIR
|
|
+
|
|
+
|
|
+# PKG_NOARCH_INSTALLDIR(DIRECTORY)
|
|
+# -------------------------
|
|
+# Substitutes the variable noarch_pkgconfigdir as the location where a
|
|
+# module should install arch-independent pkg-config .pc files. By
|
|
+# default the directory is $datadir/pkgconfig, but the default can be
|
|
+# changed by passing DIRECTORY. The user can override through the
|
|
+# --with-noarch-pkgconfigdir parameter.
|
|
+AC_DEFUN([PKG_NOARCH_INSTALLDIR],
|
|
+[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
|
|
+m4_pushdef([pkg_description],
|
|
+ [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
|
|
+AC_ARG_WITH([noarch-pkgconfigdir],
|
|
+ [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
|
|
+ [with_noarch_pkgconfigdir=]pkg_default)
|
|
+AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
|
|
+m4_popdef([pkg_default])
|
|
+m4_popdef([pkg_description])
|
|
+]) dnl PKG_NOARCH_INSTALLDIR
|
|
+
|
|
+
|
|
+# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
|
|
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
|
|
+# -------------------------------------------
|
|
+# Retrieves the value of the pkg-config variable for the given module.
|
|
+AC_DEFUN([PKG_CHECK_VAR],
|
|
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
|
|
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
|
|
+
|
|
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
|
|
+AS_VAR_COPY([$1], [pkg_cv_][$1])
|
|
+
|
|
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
|
|
+])# PKG_CHECK_VAR
|
|
--
|
|
2.1.0
|
|
|