[fix] devel/llvm/22: misc fixes

Fix for llvm-config --libs
Add missing wantlib for execinfo
Fix build on aarch64

ok?

Index: Makefile
===================================================================
RCS file: /cvs/ports/devel/llvm/22/Makefile,v
diff -u -p -u -r1.2 Makefile
--- Makefile 11 Mar 2026 07:59:25 -0000 1.2
+++ Makefile 24 Mar 2026 16:04:24 -0000
@@ -14,6 +14,8 @@ SHARED_LIBS += LLVM 0.0 \
ec++abi 0.0 \
lldb 0.0

+WANTLIB-lldb += execinfo
+
# Apache License v2.0 with LLVM Exceptions
PERMIT_PACKAGE = Yes

Index: patches/patch-libunwind_src_Registers_hpp
===================================================================
RCS file: patches/patch-libunwind_src_Registers_hpp
diff -N patches/patch-libunwind_src_Registers_hpp
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-libunwind_src_Registers_hpp 24 Mar 2026 16:04:24 -0000
@@ -0,0 +1,19 @@
+HAVE_SYS_AUXV_H check should be changed to HAVE_GETAUXVAL and
+HAVE_ELF_AUX_INFO. For now this works.
+
+Index: libunwind/src/Registers.hpp
+--- libunwind/src/Registers.hpp.orig
++++ libunwind/src/Registers.hpp
+@@ -1944,7 +1944,12 @@ class _LIBUNWIND_HIDDEN Registers_arm64 { (private)
+ static bool checkHasSME() {
+ #if defined(HAVE_SYS_AUXV_H)
+ constexpr int hwcap2_sme = (1 << 23);
++#if defined(__OpenBSD__)
++ unsigned long hwcap2 = 0;
++ elf_aux_info(AT_HWCAP2, &hwcap2, sizeof(hwcap2));
++#else
+ unsigned long hwcap2 = getauxval(AT_HWCAP2);
++