I can't build the port on an arm64 system.

The log shows

/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:966:62: error: function definition is not allowed here                                   [24/10617]
void os::print_tos_pc(outputStream *st, const void *context) {                                                                                                                                            
                                                             ^                                                                                                                                            
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:983:69: error: function definition is not allowed here                                             
void os::print_register_info(outputStream *st, const void *context) {                                                                                                                                     
                                                                    ^                                                                                                                                     
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:1010:22: error: function definition is not allowed here
void os::setup_fpu() {
                     ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:1019:36: error: function definition is not allowed here
int os::extra_bang_size_in_bytes() {
                                   ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:1024:8: error: expected unqualified-id
extern "C" {
       ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:1094:20: error: expected '}'
#endif // __APPLE__
                   ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:950:63: note: to match this '{'
void os::print_context(outputStream *st, const void *context) {
                                                              ^
6 errors generated.
gmake[4]: *** [lib/CompileJvm.gmk:160: /usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/build/bsd-aarch64-server-release/hotspot/variant-server/libjvm/objs/os_bsd_aarch64.o] Error 1
gmake[4]: *** Waiting for unfinished jobs....
gmake[4]: Leaving directory '/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/make/hotspot'
gmake[3]: *** [make/Main.gmk:252: hotspot-server-libs] Error 2
gmake[3]: Leaving directory '/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1'

ERROR: Build failed for target 'images' in configuration 'bsd-aarch64-server-release' (exit code 2) 
gmake[3]: Entering directory '/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1'

=== Output from failing command(s) repeated here ===
* For target hotspot_variant-server_libjvm_objs_os_bsd_aarch64.o:
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:966:62: error: function definition is not allowed here
void os::print_tos_pc(outputStream *st, const void *context) {
                                                             ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:983:69: error: function definition is not allowed here
void os::print_register_info(outputStream *st, const void *context) {
                                                                    ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:1010:22: error: function definition is not allowed here
void os::setup_fpu() {
                     ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:1019:36: error: function definition is not allowed here
int os::extra_bang_size_in_bytes() {
                                   ^
/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp:1024:8: error: expected unqualified-id
extern "C" {
       ^
   ... (rest of output omitted)

* All command lines available in /usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/build/bsd-aarch64-server-release/make-support/failure-logs.
=== End of repeated output ===

No indication of failed target found.
Hint: Try searching the build log for '] Error'.
Hint: See doc/building.html#troubleshooting for assistance.

gmake[3]: Leaving directory '/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1'
gmake[2]: *** [/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/make/Init.gmk:318: main] Error 2
gmake[2]: Leaving directory '/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1'
gmake[1]: *** [/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1/make/Init.gmk:189: images] Error 2
gmake[1]: Leaving directory '/usr/ports/java/openjdk17/work/jdk17u-jdk-17.0.9-9-1'
===> Compilation failed unexpectedly.