Since libiptc does not reference any symbols in libip(4|6)tc, the linker may ignore the dependencies. Use --no-as-needed to explicitly force a DT_NEEDED entry. References: http://bugzilla.netfilter.org/show_bug.cgi?id=674 Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxx> --- Makefile.am | 4 +- configure.ac | 5 +++ m4/ax_check_linker_flags.m4 | 78 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 85 insertions(+), 2 deletions(-) create mode 100644 m4/ax_check_linker_flags.m4 diff --git a/Makefile.am b/Makefile.am index 2a63cc7..7f0eb2f 100644 --- a/Makefile.am +++ b/Makefile.am @@ -20,11 +20,11 @@ lib_LTLIBRARIES = lib_LTLIBRARIES += libiptc/libip4tc.la libiptc/libip6tc.la libiptc/libiptc.la libiptc_libiptc_la_SOURCES = libiptc_libiptc_la_LIBADD = libiptc/libip4tc.la libiptc/libip6tc.la -libiptc_libiptc_la_LDFLAGS = -version-info 0:0:0 +libiptc_libiptc_la_LDFLAGS = -version-info 0:0:0 ${libiptc_LDFLAGS2} libiptc_libip4tc_la_SOURCES = libiptc/libip4tc.c libiptc_libip4tc_la_LDFLAGS = -version-info 0:0:0 libiptc_libip6tc_la_SOURCES = libiptc/libip6tc.c -libiptc_libip6tc_la_LDFLAGS = -version-info 0:0:0 +libiptc_libip6tc_la_LDFLAGS = -version-info 0:0:0 ${libiptc_LDFLAGS2} lib_LTLIBRARIES += libxtables.la libxtables_la_SOURCES = xtables.c diff --git a/configure.ac b/configure.ac index 3b26f54..6010afd 100644 --- a/configure.ac +++ b/configure.ac @@ -52,6 +52,11 @@ AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=PATH], [Path to the pkgconfig directory [[LIBDIR/pkgconfig]]]), [pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig']) +libiptc_LDFLAGS2=""; +AX_CHECK_LINKER_FLAGS([-Wl,--no-as-needed], + [libiptc_LDFLAGS2="-Wl,--no-as-needed"]) +AC_SUBST([libiptc_LDFLAGS2]) + blacklist_modules=""; AC_CHECK_HEADER([linux/dccp.h]) diff --git a/m4/ax_check_linker_flags.m4 b/m4/ax_check_linker_flags.m4 new file mode 100644 index 0000000..ba7bf3c --- /dev/null +++ b/m4/ax_check_linker_flags.m4 @@ -0,0 +1,78 @@ +#http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=m4/ax_check_linker_flags.m4 +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_check_linker_flags.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_LINKER_FLAGS(FLAGS, [ACTION-SUCCESS], [ACTION-FAILURE]) +# +# DESCRIPTION +# +# Check whether the given linker FLAGS work with the current language's +# linker, or whether they give an error. +# +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +# success/failure. +# +# NOTE: Based on AX_CHECK_COMPILER_FLAGS. +# +# LICENSE +# +# Copyright (c) 2009 Mike Frysinger <vapier@xxxxxxxxxx> +# Copyright (c) 2009 Steven G. Johnson <stevenj@xxxxxxxxxxxx> +# Copyright (c) 2009 Matteo Frigo +# +# 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 3 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, see <http://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 6 + +AC_DEFUN([AX_CHECK_LINKER_FLAGS], +[AC_MSG_CHECKING([whether the linker accepts $1]) +dnl Some hackery here since AC_CACHE_VAL can't handle a non-literal varname: +AS_LITERAL_IF([$1], + [AC_CACHE_VAL(AS_TR_SH(ax_cv_linker_flags_[$1]), [ + ax_save_FLAGS=$LDFLAGS + LDFLAGS="$1" + AC_LINK_IFELSE([AC_LANG_PROGRAM()], + AS_TR_SH(ax_cv_linker_flags_[$1])=yes, + AS_TR_SH(ax_cv_linker_flags_[$1])=no) + LDFLAGS=$ax_save_FLAGS])], + [ax_save_FLAGS=$LDFLAGS + LDFLAGS="$1" + AC_LINK_IFELSE([AC_LANG_PROGRAM()], + eval AS_TR_SH(ax_cv_linker_flags_[$1])=yes, + eval AS_TR_SH(ax_cv_linker_flags_[$1])=no) + LDFLAGS=$ax_save_FLAGS]) +eval ax_check_linker_flags=$AS_TR_SH(ax_cv_linker_flags_[$1]) +AC_MSG_RESULT($ax_check_linker_flags) +if test "x$ax_check_linker_flags" = xyes; then + m4_default([$2], :) +else + m4_default([$3], :) +fi +])dnl AX_CHECK_LINKER_FLAGS -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
