Also look in -lposix4 for sem_init. Fixes #618615.
diff --git a/configure b/configure
index ffdc0a2..e6c99dc 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
#! /bin/sh
-# From configure.in Revision: 1.350 .
+# From configure.in Revision: 1.351 .
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.53.
#
@@ -9219,14 +9219,13 @@
fi
# Dynamic linking for HP-UX
-
-echo "$as_me:$LINENO: checking for sem_init in -lrt" >&5
-echo $ECHO_N "checking for sem_init in -lrt... $ECHO_C" >&6
-if test "${ac_cv_lib_rt_sem_init+set}" = set; then
+echo "$as_me:$LINENO: checking for library containing sem_init" >&5
+echo $ECHO_N "checking for library containing sem_init... $ECHO_C" >&6
+if test "${ac_cv_search_sem_init+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
- ac_check_lib_save_LIBS=$LIBS
-LIBS="-lrt $LIBS"
+ ac_func_search_save_LIBS=$LIBS
+ac_cv_search_sem_init=no
cat >conftest.$ac_ext <<_ACEOF
#line $LINENO "configure"
#include "confdefs.h"
@@ -9264,26 +9263,71 @@
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
- ac_cv_lib_rt_sem_init=yes
+ ac_cv_search_sem_init="none required"
else
echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
-ac_cv_lib_rt_sem_init=no
fi
rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_rt_sem_init" >&5
-echo "${ECHO_T}$ac_cv_lib_rt_sem_init" >&6
-if test $ac_cv_lib_rt_sem_init = yes; then
- cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBRT 1
+if test "$ac_cv_search_sem_init" = no; then
+ for ac_lib in rt posix4; do
+ LIBS="-l$ac_lib $ac_func_search_save_LIBS"
+ cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+
+/* Override any gcc2 internal prototype to avoid an error. */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char sem_init ();
+#ifdef F77_DUMMY_MAIN
+# ifdef __cplusplus
+ extern "C"
+# endif
+ int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+sem_init ();
+ ;
+ return 0;
+}
_ACEOF
-
- LIBS="-lrt $LIBS"
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest$ac_exeext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_cv_search_sem_init="-l$ac_lib"
+break
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+ done
+fi
+LIBS=$ac_func_search_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_search_sem_init" >&5
+echo "${ECHO_T}$ac_cv_search_sem_init" >&6
+if test "$ac_cv_search_sem_init" != no; then
+ test "$ac_cv_search_sem_init" = "none required" || LIBS="$ac_cv_search_sem_init $LIBS"
fi
- # 'Real Time' functions on Solaris
+ # 'Real Time' functions on Solaris,
+ # posix4 on Solaris 2.6
# checks for system dependent C++ extensions support
case "$ac_sys_system" in