libtool: remove bitrig support.

Bitrig has been defunct for 7 years.

* build-aux/ltmain.in (func_mode_link): Remove bitrig support.
* m4/libtool.m4 (_LT_CMD_OLD_ARCHIVE, LT_CMD_MAX_LEN)
(_LT_SYS_DYNAMIC_LINKER, _LT_CHECK_MAGIC_METHOD)
(_LT_LINKER_SHLIBS, _LT_LANG_CXX_CONFIG): Ditto.
* m4/ltdl.m4 (LT_SYS_DLOPEN_DEPLIBS): Ditto.
* NEWS: Updated.

NEWS

@@ -2,6 +2,9 @@ NEWS - list of user-visible changes between releases of GNU Libtool
 
 * Noteworthy changes in release ?.? (????-??-??) [?]
 
+** Changes in supported systems or compilers:
+
+  - Removed support for bitrig (*-*-bitrig*).
 
 * Noteworthy changes in release 2.4.7 (2022-03-16) [stable]
 

build-aux/ltmain.in

@@ -5134,7 +5134,7 @@ func_mode_link ()
 	    # These systems don't actually have a C library (as such)
 	    test X-lc = "X$arg" && continue
 	    ;;
-	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*)
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-midnightbsd*)
 	    # Do not include libc due to us having libc/libc_r.
 	    test X-lc = "X$arg" && continue
 	    ;;
@@ -5154,7 +5154,7 @@ func_mode_link ()
 	  esac
 	elif test X-lc_r = "X$arg"; then
 	 case $host in
-	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*)
+	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-midnightbsd*)
 	   # Do not include libc_r directly, use -pthread flag.
 	   continue
 	   ;;

m4/libtool.m4

@@ -1556,7 +1556,7 @@ old_postuninstall_cmds=
 
 if test -n "$RANLIB"; then
   case $host_os in
-  bitrig* | openbsd*)
+  openbsd*)
     old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
     ;;
   *)
@@ -1724,7 +1724,7 @@ AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
     lt_cv_sys_max_cmd_len=8192;
     ;;
 
-  bitrig* | darwin* | dragonfly* | freebsd* | midnightbsd* | netbsd* | openbsd*)
+  darwin* | dragonfly* | freebsd* | midnightbsd* | netbsd* | openbsd*)
     # 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`
@@ -2944,7 +2944,7 @@ newsos6)
   dynamic_linker='ldqnx.so'
   ;;
 
-openbsd* | bitrig*)
+openbsd*)
   version_type=sunos
   sys_lib_dlsearch_path_spec=/usr/lib
   need_lib_prefix=no
@@ -3584,7 +3584,7 @@ newos6*)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
-openbsd* | bitrig*)
+openbsd*)
   if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`"; then
     lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
   else
@@ -5021,7 +5021,7 @@ dnl Note also adjust exclude_expsyms for C++ above.
     # we just hope/assume this is gcc and not c89 (= MSVC++ or ICC)
     with_gnu_ld=yes
     ;;
-  openbsd* | bitrig*)
+  openbsd*)
     with_gnu_ld=no
     ;;
   esac
@@ -5843,7 +5843,7 @@ _LT_EOF
     *nto* | *qnx*)
       ;;
 
-    openbsd* | bitrig*)
+    openbsd*)
       if test -f /usr/libexec/ld.so; then
 	_LT_TAGVAR(hardcode_direct, $1)=yes
 	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
@@ -7137,7 +7137,7 @@ if test yes != "$_lt_caught_CXX_error"; then
         _LT_TAGVAR(ld_shlibs, $1)=yes
 	;;
 
-      openbsd* | bitrig*)
+      openbsd*)
 	if test -f /usr/libexec/ld.so; then
 	  _LT_TAGVAR(hardcode_direct, $1)=yes
 	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no

m4/ltdl.m4

@@ -466,9 +466,6 @@ AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
       ;;
     esac
     ;;
-  bitrig*)
-    lt_cv_sys_dlopen_deplibs=yes
-    ;;
   darwin*)
     # Assuming the user has installed a libdl from somewhere, this is true
     # If you are looking for one http://www.opendarwin.org/projects/dlcompat