libtool: Add support for SerenityOS

This hobbyist OS has already been added to `config.sub` (and
`config.guess` respectively) some time ago, but was still lacking
upstream support for building libraries using libtool.

Since it is a relatively up-to-date system with ports of modern
software, "adding support" mostly just means adding empty cases to avoid
falling though to the most basic behavior (that guarantees compatibility
at the expense of disabling everything that might be critical).

* m4/libtool.m4: Add support for SerenityOS.

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index a80c506dce6db1f2428b8f217cccb2c3755a4ee7..1a9bedc8c6b6e7ae60b8de5852f2c425c36e23e9 100644 (file)
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -3087,6 +3087,17 @@ rdos*)
   dynamic_linker=no
   ;;
 
+serenity*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext'
+  soname_spec='$libname$release$shared_ext$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  dynamic_linker='SerenityOS LibELF'
+  ;;
+
 solaris*)
   version_type=linux # correct to gnu/linux during the next big refactor
   need_lib_prefix=no
@@ -3686,6 +3697,10 @@ rdos*)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
+serenity*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
 solaris*)
   lt_cv_deplibs_check_method=pass_all
   ;;
@@ -4563,6 +4578,8 @@ m4_if([$1], [CXX], [
        ;;
       psos*)
        ;;
+      serenity*)
+        ;;
       solaris*)
        case $cc_basename in
          CC* | sunCC*)
@@ -4911,6 +4928,9 @@ m4_if([$1], [CXX], [
       _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
       ;;
 
+    serenity*)
+      ;;
+
     solaris*)
       _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
       _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
@@ -6025,6 +6045,9 @@ _LT_EOF
       _LT_TAGVAR(hardcode_libdir_separator, $1)=:
       ;;
 
+    serenity*)
+      ;;
+
     solaris*)
       _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
       if test yes = "$GCC"; then
@@ -7350,6 +7373,9 @@ if test yes != "$_lt_caught_CXX_error"; then
         _LT_TAGVAR(ld_shlibs, $1)=no
         ;;
 
+      serenity*)
+        ;;
+
       sunos4*)
         case $cc_basename in
           CC*)