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meson: add linker checks
Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Neal Gompa <ngompa13@gmail.com>
This commit is contained in:
Pavel Hrdina
parent
c9d0ef07ed
commit
30b301c6ea
41
configure.ac
41
configure.ac
@ -64,43 +64,6 @@ m4_ifndef([LT_INIT], [
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AM_PROG_CC_C_O
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AM_PROG_LD
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AC_MSG_CHECKING([for how to mark DSO non-deletable at runtime])
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LIBVIRT_NODELETE=
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`$LD --help 2>&1 | grep -- "-z nodelete" >/dev/null` && \
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LIBVIRT_NODELETE="-Wl,-z -Wl,nodelete"
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AC_MSG_RESULT([$LIBVIRT_NODELETE])
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AC_SUBST([LIBVIRT_NODELETE])
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AC_MSG_CHECKING([for how to set DSO symbol versions])
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case "$host" in
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*-*-mingw* | *-*-msvc* )
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# mingw's ld has the --version-script parameter, but it requires a .def file
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# instead to work properly, therefore clear --version-script here and use
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# -Wl, to pass the .def file to the linker
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VERSION_SCRIPT_FLAGS="-Wl,"
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;;
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* )
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VERSION_SCRIPT_FLAGS=-Wl,--version-script=
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`$LD --help 2>&1 | grep -- --version-script >/dev/null` || \
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VERSION_SCRIPT_FLAGS="-Wl,-M -Wl,"
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;;
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esac
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AC_MSG_RESULT([$VERSION_SCRIPT_FLAGS])
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AC_SUBST([VERSION_SCRIPT_FLAGS])
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dnl macOS has two-level namespaces by default.
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dnl Override it to allow symbol replacement with DYLD_INSERT_LIBRARIES
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case "$host" in
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*-*-darwin*)
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FLAT_NAMESPACE_FLAGS=-Wl,-flat_namespace
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;;
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* )
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FLAT_NAMESPACE_FLAGS=""
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;;
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esac
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AC_MSG_RESULT([$FLAT_NAMESPACE_FLAGS])
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AC_SUBST([FLAT_NAMESPACE_FLAGS])
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dnl Specify if we rely on ifconfig instead of iproute2 (e.g. in case
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dnl we're working on BSD)
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want_ifconfig=no
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@ -161,10 +124,6 @@ fi
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# Check for compiler and library settings.
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LIBVIRT_LINKER_RELRO
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LIBVIRT_LINKER_NO_INDIRECT
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LIBVIRT_LINKER_NO_UNDEFINED
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LIBVIRT_ARG_APPARMOR
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LIBVIRT_ARG_ATTR
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LIBVIRT_ARG_AUDIT
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@ -1,32 +0,0 @@
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dnl
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dnl Check for --no-copy-dt-needed-entries
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dnl
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dnl Copyright (C) 2013 Guido Günther <agx@sigxcpu.org>
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dnl
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dnl This library is free software; you can redistribute it and/or
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dnl modify it under the terms of the GNU Lesser General Public
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dnl License as published by the Free Software Foundation; either
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dnl version 2.1 of the License, or (at your option) any later version.
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dnl
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dnl This library is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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dnl Lesser General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU Lesser General Public
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dnl License along with this library. If not, see
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dnl <http://www.gnu.org/licenses/>.
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dnl
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AC_DEFUN([LIBVIRT_LINKER_NO_INDIRECT],[
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AC_MSG_CHECKING([for how to avoid indirect lib deps])
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NO_INDIRECT_LDFLAGS=
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case `$LD --help 2>&1` in
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*"--no-copy-dt-needed-entries"*)
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NO_INDIRECT_LDFLAGS="-Wl,--no-copy-dt-needed-entries" ;;
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esac
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AC_SUBST([NO_INDIRECT_LDFLAGS])
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AC_MSG_RESULT([$NO_INDIRECT_LDFLAGS])
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])
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@ -1,32 +0,0 @@
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dnl
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dnl Check for -z defs linker flag
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dnl
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dnl Copyright (C) 2013-2018 Red Hat, Inc.
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dnl
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dnl This library is free software; you can redistribute it and/or
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dnl modify it under the terms of the GNU Lesser General Public
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dnl License as published by the Free Software Foundation; either
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dnl version 2.1 of the License, or (at your option) any later version.
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dnl
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dnl This library is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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dnl Lesser General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU Lesser General Public
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dnl License along with this library. If not, see
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dnl <http://www.gnu.org/licenses/>.
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dnl
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AC_DEFUN([LIBVIRT_LINKER_NO_UNDEFINED],[
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AC_MSG_CHECKING([for how to stop undefined symbols at link time])
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NO_UNDEFINED_LDFLAGS=
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ld_help=`$LD --help 2>&1`
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case $ld_help in
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*"-z defs"*) NO_UNDEFINED_LDFLAGS="-Wl,-z -Wl,defs" ;;
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esac
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AC_SUBST([NO_UNDEFINED_LDFLAGS])
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AC_MSG_RESULT([$NO_UNDEFINED_LDFLAGS])
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])
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@ -1,35 +0,0 @@
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dnl
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dnl Check for -z now and -z relro linker flags
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dnl
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dnl Copyright (C) 2013 Red Hat, Inc.
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dnl
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dnl This library is free software; you can redistribute it and/or
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dnl modify it under the terms of the GNU Lesser General Public
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dnl License as published by the Free Software Foundation; either
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dnl version 2.1 of the License, or (at your option) any later version.
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dnl
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dnl This library is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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dnl Lesser General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU Lesser General Public
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dnl License along with this library. If not, see
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dnl <http://www.gnu.org/licenses/>.
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dnl
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AC_DEFUN([LIBVIRT_LINKER_RELRO],[
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AC_MSG_CHECKING([for how to force completely read-only GOT table])
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RELRO_LDFLAGS=
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ld_help=`$LD --help 2>&1`
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case $ld_help in
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*"-z relro"*) RELRO_LDFLAGS="-Wl,-z -Wl,relro" ;;
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esac
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case $ld_help in
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*"-z now"*) RELRO_LDFLAGS="$RELRO_LDFLAGS -Wl,-z -Wl,now" ;;
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esac
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AC_SUBST([RELRO_LDFLAGS])
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AC_MSG_RESULT([$RELRO_LDFLAGS])
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])
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43
meson.build
43
meson.build
@ -587,6 +587,49 @@ cc_flags_relaxed_frame_limit = [
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]
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# various linker checks
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libvirt_relro = cc.get_supported_link_arguments([
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'-Wl,-z,relro',
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'-Wl,-z,now',
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])
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libvirt_nodelete = cc.get_supported_link_arguments([
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'-Wl,-z,nodelete',
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])
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libvirt_no_undefined = cc.get_supported_link_arguments([
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'-Wl,-z,defs',
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])
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libvirt_no_indirect = cc.get_supported_link_arguments([
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'-Wl,--no-copy-dt-needed-entries',
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])
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if host_machine.system() == 'windows'
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version_script_flags = '-Wl,'
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else
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test_file = '@0@/src/libvirt_qemu.syms'.format(meson.source_root())
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if cc.has_link_argument('-Wl,--version-script=@0@'.format(test_file))
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version_script_flags = '-Wl,--version-script='
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elif cc.has_link_argument('-Wl,-M,')
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version_script_flags = '-Wl,-M,'
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else
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error('No supported version script link argument found.')
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endif
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endif
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libvirt_flat_namespace = []
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if host_machine.system() == 'darwin'
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libvirt_flat_namespace = '-Wl,-flat_namespace'
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endif
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libvirt_export_dynamic = cc.first_supported_link_argument([
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'-Wl,-export-dynamic',
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'-Wl,-export_dynamic',
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])
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# define top include directory
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top_inc_dir = include_directories('.')
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