[PATCH v2] Fix Xdmx and Xephyr build when DTrace support is enabled

[Nicolas Peninguy]

This fixes the following build errors when DTrace is enabled
(--with-dtrace):

  CCLD   Xdmx
/usr/bin/ld: ../../os/os.O: undefined reference to symbol 'dladdr@@GLIBC_2.2.5'
/usr/bin/ld: note: 'dladdr@@GLIBC_2.2.5' is defined in DSO /lib64/libdl.so.2 so try adding it to the linker command line

  CCLD   Xephyr
../../../os/os.O: In function `TimerForce':
/home/nico/work/xserver/os/WaitFor.c:481: multiple definition of `TimerForce'
../../../os/os.O:/home/nico/work/xserver/os/WaitFor.c:481: first defined here

Signed-off-by: Nicolas Peninguy <nico at lostgeeks.org>
---
 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index bd027cd..4b1e686 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1335,7 +1335,7 @@ AC_DEFINE(BIGREQS, 1, [Support BigRequests extension])
 
 if test "x$SPECIAL_DTRACE_OBJECTS" = "xyes" ; then
   DIX_LIB='$(top_builddir)/dix/dix.O'
-  OS_LIB='$(top_builddir)/os/os.O $(SHA1_LIBS)'
+  OS_LIB='$(top_builddir)/os/os.O $(SHA1_LIBS) $(DLOPEN_LIBS)'
 else
   DIX_LIB='$(top_builddir)/dix/libdix.la'
   OS_LIB='$(top_builddir)/os/libos.la'
@@ -2122,7 +2122,7 @@ if test "$KDRIVE" = yes; then
     KDRIVE_STUB_LIB='$(top_builddir)/hw/kdrive/src/libkdrivestubs.la'
     KDRIVE_LOCAL_LIBS="$MAIN_LIB $DIX_LIB $KDRIVE_LIB $KDRIVE_STUB_LIB"
     KDRIVE_LOCAL_LIBS="$KDRIVE_LOCAL_LIBS $FB_LIB $MI_LIB $KDRIVE_PURE_LIBS"
-    KDRIVE_LOCAL_LIBS="$KDRIVE_LOCAL_LIBS $KDRIVE_OS_LIB $OS_LIB"
+    KDRIVE_LOCAL_LIBS="$KDRIVE_LOCAL_LIBS $KDRIVE_OS_LIB"
     KDRIVE_LIBS="$KDRIVE_LOCAL_LIBS $XSERVER_SYS_LIBS $GLX_SYS_LIBS $DLOPEN_LIBS $TSLIB_LIBS"
 
     AC_SUBST([XEPHYR_LIBS])
-- 
1.7.3.2