[libvirt] [PATCH v4 2/3] Check for --no-copy-dt-needed linker flag
and use it when available
---
configure.ac | 1 +
daemon/Makefile.am | 1 +
m4/virt-linker-no-indirect.m4 | 32 ++++++++++++++++++++++++++++++++
src/Makefile.am | 1 +
tests/Makefile.am | 1 +
tools/Makefile.am | 1 +
6 files changed, 37 insertions(+)
create mode 100644 m4/virt-linker-no-indirect.m4
diff --git a/configure.ac b/configure.ac
index ac8cfa1..25d91ce 100644
--- a/configure.ac
+++ b/configure.ac
@@ -160,6 +160,7 @@ AC_MSG_RESULT([$VERSION_SCRIPT_FLAGS])
LIBVIRT_COMPILE_WARNINGS
LIBVIRT_COMPILE_PIE
LIBVIRT_LINKER_RELRO
+LIBVIRT_LINKER_NO_INDIRECT
LIBVIRT_CHECK_APPARMOR
LIBVIRT_CHECK_ATTR
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 5cd95aa..e34868b 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -129,6 +129,7 @@ libvirtd_LDFLAGS = \
$(PIE_LDFLAGS) \
$(RELRO_LDFLAGS) \
$(COVERAGE_LDFLAGS) \
+ $(NO_INDIRECT_LDFLAGS) \
$(NULL)
libvirtd_LDADD = \
diff --git a/m4/virt-linker-no-indirect.m4 b/m4/virt-linker-no-indirect.m4
new file mode 100644
index 0000000..b344f70
--- /dev/null
+++ b/m4/virt-linker-no-indirect.m4
@@ -0,0 +1,32 @@
+dnl
+dnl Check for --no-copy-dt-needed-entries
+dnl
+dnl Copyright (C) 2013 Guido Günther <agx(a)sigxcpu.org>
+dnl
+dnl This library is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU Lesser General Public
+dnl License as published by the Free Software Foundation; either
+dnl version 2.1 of the License, or (at your option) any later version.
+dnl
+dnl This library is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl Lesser General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU Lesser General Public
+dnl License along with this library. If not, see
+dnl <http://www.gnu.org/licenses/>;.
+dnl
+
+AC_DEFUN([LIBVIRT_LINKER_NO_INDIRECT],[
+ AC_MSG_CHECKING([for how to avoid indirect lib deps])
+
+ NO_INDIRECT_LDFLAGS=
+ case `$LD --help 2>&1` in
+ *"--no-copy-dt-needed-entries"*)
+ NO_INDIRECT_LDFLAGS="-Wl,--no-copy-dt-needed-entries" ;;
+ esac
+ AC_SUBST([NO_INDIRECT_LDFLAGS])
+
+ AC_MSG_RESULT([$NO_INDIRECT_LDFLAGS])
+])
diff --git a/src/Makefile.am b/src/Makefile.am
index 7c3d8a1..faa2cd6 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -35,6 +35,7 @@ AM_CFLAGS = $(LIBXML_CFLAGS) \
AM_LDFLAGS = $(DRIVER_MODULE_LDFLAGS) \
$(COVERAGE_LDFLAGS) \
$(RELRO_LDFLAGS) \
+ $(NO_INDIRECT_LDFLAGS) \
$(NULL)
EXTRA_DIST = $(conf_DATA) util/keymaps.csv
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 9098dec..86c3e11 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -50,6 +50,7 @@ endif
LDADDS = \
$(WARN_CFLAGS) \
+ $(NO_INDIRECT_LDFLAGS) \
$(PROBES_O) \
../src/libvirt.la \
../gnulib/lib/libgnu.la
diff --git a/tools/Makefile.am b/tools/Makefile.am
index be7ed23..c5bd5bb 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -24,6 +24,7 @@ INCLUDES = \
AM_LDFLAGS = \
$(RELRO_LDFLAGS) \
+ $(NO_INDIRECT_LDFLAGS) \
$(NULL)
POD2MAN = pod2man -c "Virtualization Support" -r
"$(PACKAGE)-$(VERSION)"
--
1.8.4.rc3