Add support for the OpenBSD for Bitrig.

Patch by David Hill.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161344 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/autoconf/config.guess b/autoconf/config.guess
index f7dd69e..dd6dcb3 100755
--- a/autoconf/config.guess
+++ b/autoconf/config.guess
@@ -206,6 +206,10 @@
 	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
 	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
 	exit ;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE}
+	exit ;;
     *:ekkoBSD:*:*)
 	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
 	exit ;;
diff --git a/autoconf/ltmain.sh b/autoconf/ltmain.sh
index 2455278..21ace01 100644
--- a/autoconf/ltmain.sh
+++ b/autoconf/ltmain.sh
@@ -1560,7 +1560,7 @@
 	    # These systems don't actually have a C library (as such)
 	    test "X$arg" = "X-lc" && continue
 	    ;;
-	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*)
 	    # Do not include libc due to us having libc/libc_r.
 	    test "X$arg" = "X-lc" && continue
 	    ;;
@@ -1580,7 +1580,7 @@
 	  esac
 	elif test "X$arg" = "X-lc_r"; then
 	 case $host in
-	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | -*-*-bitrig*)
 	   # Do not include libc_r directly, use -pthread flag.
 	   continue
 	   ;;
@@ -3464,7 +3464,7 @@
 	  *-*-netbsd*)
 	    # Don't link with libc until the a.out ld.so is fixed.
 	    ;;
-	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*)
 	    # Do not include libc due to us having libc/libc_r.
 	    ;;
 	  *-*-sco3.2v5* | *-*-sco5v6*)
diff --git a/autoconf/m4/libtool.m4 b/autoconf/m4/libtool.m4
index 36ac3d1..05af7a2 100644
--- a/autoconf/m4/libtool.m4
+++ b/autoconf/m4/libtool.m4
@@ -176,7 +176,7 @@
 
 if test -n "$RANLIB"; then
   case $host_os in
-  openbsd*)
+  openbsd* | bitrig*)
     old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
     ;;
   *)
@@ -729,7 +729,7 @@
     lt_cv_sys_max_cmd_len=8192;
     ;;
 
-  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly* | bitrig*)
     # This has been around since 386BSD, at least.  Likely further.
     if test -x /sbin/sysctl; then
       lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
@@ -1631,7 +1631,7 @@
   shlibpath_overrides_runpath=yes
   ;;
 
-openbsd*)
+openbsd* | bitrig*)
   version_type=sunos
   sys_lib_dlsearch_path_spec="/usr/lib"
   need_lib_prefix=no
@@ -3382,7 +3382,7 @@
     # C++ shared libraries are fairly broken
     _LT_AC_TAGVAR(ld_shlibs, $1)=no
     ;;
-  openbsd*)
+  openbsd* | bitrig*)
     _LT_AC_TAGVAR(hardcode_direct, $1)=yes
     _LT_AC_TAGVAR(hardcode_shlibpath_var, $1)=no
     _LT_AC_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
@@ -6003,7 +6003,7 @@
       _LT_AC_TAGVAR(hardcode_shlibpath_var, $1)=no
       ;;
 
-    openbsd*)
+    openbsd* | bitrig*)
       _LT_AC_TAGVAR(hardcode_direct, $1)=yes
       _LT_AC_TAGVAR(hardcode_shlibpath_var, $1)=no
       if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then