[libvirt] [PATCH v2] Check for --no-copy-dt-needed linker flag

[Guido Günther]

and use it when available
---
 configure.ac                  |  1 +
 m4/virt-linker-no-indirect.m4 | 30 ++++++++++++++++++++++++++++++
 src/Makefile.am               |  9 +++++++++
 tests/Makefile.am             |  1 +
 4 files changed, 41 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/m4/virt-linker-no-indirect.m4 b/m4/virt-linker-no-indirect.m4
new file mode 100644
index 0000000..2ccd960
--- /dev/null
+++ b/m4/virt-linker-no-indirect.m4
@@ -0,0 +1,30 @@
+dnl
+dnl Check for --no-copy-dt-needed-entries
+dnl
+dnl Copyright (C) 2013 Guido Günther <agx at 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=
+    `$LD --help 2>&1 | grep -- "--no-copy-dt-needed-entries" >/dev/null` && \
+        NO_INDIRECT_LDFLAGS="-Wl,--no-copy-dt-needed-entries"
+    AC_SUBST([NO_INDIRECT_LDFLAGS])
+
+    AC_MSG_RESULT([$NO_INDIRECT_LDFLAGS])
+])
diff --git a/src/Makefile.am b/src/Makefile.am
index 4702cde..adef55a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1813,6 +1813,7 @@ libvirt_la_LDFLAGS = \
 		$(LIBVIRT_NODELETE) \
 		$(AM_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(CYGWIN_EXTRA_LDFLAGS) \
 		$(MINGW_EXTRA_LDFLAGS) \
 		$(NULL)
@@ -1897,6 +1898,7 @@ libvirt_qemu_la_LDFLAGS = \
 		-version-info $(LIBVIRT_VERSION_INFO) \
 		$(AM_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(CYGWIN_EXTRA_LDFLAGS) \
 		$(MINGW_EXTRA_LDFLAGS) \
 		$(NULL)
@@ -1909,6 +1911,7 @@ libvirt_lxc_la_LDFLAGS = \
 		-version-info $(LIBVIRT_VERSION_INFO) \
 		$(AM_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(CYGWIN_EXTRA_LDFLAGS) \
 		$(MINGW_EXTRA_LDFLAGS) \
 		$(NULL)
@@ -1965,6 +1968,7 @@ virtlockd_LDFLAGS = \
 		$(AM_LDFLAGS) \
 		$(PIE_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(CYGWIN_EXTRA_LDFLAGS) \
 		$(MINGW_EXTRA_LDFLAGS) \
 		$(NULL)
@@ -2244,6 +2248,7 @@ libvirt_iohelper_LDFLAGS = \
 		$(AM_LDFLAGS) \
 		$(PIE_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(NULL)
 libvirt_iohelper_LDADD =		\
 		libvirt_util.la		\
@@ -2267,6 +2272,7 @@ libvirt_parthelper_LDFLAGS = \
 		$(AM_LDFLAGS) \
 		$(PIE_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(NULL)
 libvirt_parthelper_LDADD =		\
 		$(LIBPARTED_LIBS)	\
@@ -2299,6 +2305,7 @@ libvirt_sanlock_helper_LDFLAGS = \
 		$(AM_LDFLAGS) \
 		$(PIE_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(NULL)
 libvirt_sanlock_helper_LDADD = libvirt.la
 endif
@@ -2315,6 +2322,7 @@ libvirt_lxc_LDFLAGS = \
 		$(AM_LDFLAGS) \
 		$(PIE_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(NULL)
 libvirt_lxc_LDADD =			\
 		$(FUSE_LIBS) \
@@ -2359,6 +2367,7 @@ virt_aa_helper_LDFLAGS = \
 		$(AM_LDFLAGS) \
 		$(PIE_LDFLAGS) \
 		$(RELRO_LDFLAGS) \
+		$(NO_INDIRECT_LDFLAGS) \
 		$(NULL)
 virt_aa_helper_LDADD =						\
 		libvirt_conf.la					\
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
-- 
1.8.4.rc3