Latest 2.4.0 version does not build in arm64

Hi,

I understand arm is not officially supported, but would be great if this project would consider supporting it officially since it became a more prevalent platform among developers in the last few years.

In any case, last time it was easy enough to fix so I'm hoping for the same this time around 🙂

The latest 2.4.0 version does not build in arm and produces the following errors:

#44 117.6 error[E0308]: mismatched types
#44 117.6      --> src/compat.rs:101:9
#44 117.6       |
#44 117.6    99 |     pg_sys::parse_analyze_varparams(
#44 117.6       |     ------------------------------- arguments to this function are incorrect
#44 117.6   100 |         arg_parseTree,
#44 117.6   101 |         arg_sourceText,
#44 117.6       |         ^^^^^^^^^^^^^^ expected `*const u8`, found `*const i8`
#44 117.6       |
#44 117.6       = note: expected raw pointer `*const u8`
#44 117.6                  found raw pointer `*const i8`
#44 117.6 note: function defined here
#44 117.6      --> /src/target/release/build/pgrx-pg-sys-ff29425c12ed4740/out/pg16.rs:43843:12
#44 117.6       |
#44 117.6 43843 |     pub fn parse_analyze_varparams(
#44 117.6       |            ^^^^^^^^^^^^^^^^^^^^^^^
#44 117.6 
#44 117.6 error[E0308]: mismatched types
#44 117.6    --> src/fixture.rs:355:13
#44 117.6     |
#44 117.6 353 |         compat::parse_analyze_varparams(
#44 117.6     |         ------------------------------- arguments to this function are incorrect
#44 117.6 354 |             raw_stmt.as_ptr(),
#44 117.6 355 |             query_cstr.as_ptr(),
#44 117.6     |             ^^^^^^^^^^^^^^^^^^^ expected `*const i8`, found `*const u8`
#44 117.6     |
#44 117.6     = note: expected raw pointer `*const i8`
#44 117.6                found raw pointer `*const u8`
#44 117.6 note: function defined here
#44 117.6    --> src/compat.rs:92:15
#44 117.6     |
#44 117.6  92 | pub unsafe fn parse_analyze_varparams(
#44 117.6     |               ^^^^^^^^^^^^^^^^^^^^^^^
#44 117.6  93 |     arg_parseTree: *mut pg_sys::RawStmt,
#44 117.6  94 |     arg_sourceText: *const i8,
#44 117.6     |     -------------------------
#44 117.6 
#44 117.6 error[E0308]: mismatched types
#44 117.6   --> src/hooks.rs:77:40
#44 117.6    |
#44 117.6 77 |     pg_sys::ProcessUtility_hook = Some(process_utility_hook);
#44 117.6    |                                   ---- ^^^^^^^^^^^^^^^^^^^^ expected fn pointer, found fn item
#44 117.6    |                                   |
#44 117.6    |                                   arguments to this enum variant are incorrect
#44 117.6    |
#44 117.6    = note: expected fn pointer `unsafe extern "C-unwind" fn(_, *const u8, _, _, _, _, _, _)`
#44 117.6                  found fn item `unsafe extern "C-unwind" fn(_, *const i8, _, _, _, _, _, _) {process_utility_hook}`
#44 117.6 help: the type constructed contains `unsafe extern "C-unwind" fn(*mut PlannedStmt, *const i8, bool, u32, *mut ParamListInfoData, *mut QueryEnvironment, *mut _DestReceiver, *mut QueryCompletion) {process_utility_hook}` due to the type of the argument passed
#44 117.6   --> src/hooks.rs:77:35
#44 117.6    |
#44 117.6 77 |     pg_sys::ProcessUtility_hook = Some(process_utility_hook);
#44 117.6    |                                   ^^^^^--------------------^
#44 117.6    |                                        |
#44 117.6    |                                        this argument influences the type of `Some`
#44 117.6 note: tuple variant defined here
#44 117.6   --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/option.rs:601:5
#44 117.6 
#44 117.6 error[E0308]: mismatched types
#44 117.6    --> src/hooks.rs:140:21
#44 117.6     |
#44 117.6 138 |                 prev_hook(
#44 117.6     |                 --------- arguments to this function are incorrect
#44 117.6 139 |                     pstmt,
#44 117.6 140 |                     query_string,
#44 117.6     |                     ^^^^^^^^^^^^ expected `*const u8`, found `*const i8`
#44 117.6     |
#44 117.6     = note: expected raw pointer `*const u8`
#44 117.6                found raw pointer `*const i8`
#44 117.6 
#44 117.6 error[E0308]: mismatched types
#44 117.6      --> src/hooks.rs:152:17
#44 117.6       |
#44 117.6   150 |             pg_sys::standard_ProcessUtility(
#44 117.6       |             ------------------------------- arguments to this function are incorrect
#44 117.6   151 |                 pstmt,
#44 117.6   152 |                 query_string,
#44 117.6       |                 ^^^^^^^^^^^^ expected `*const u8`, found `*const i8`
#44 117.6       |
#44 117.6       = note: expected raw pointer `*const u8`
#44 117.6                  found raw pointer `*const i8`
#44 117.6 note: function defined here
#44 117.6      --> /src/target/release/build/pgrx-pg-sys-ff29425c12ed4740/out/pg16.rs:45918:12
#44 117.6       |
#44 117.6 45918 |     pub fn standard_ProcessUtility(
#44 117.6       |            ^^^^^^^^^^^^^^^^^^^^^^^
#44 117.6 
#44 118.5 For more information about this error, try `rustc --explain E0308`.
#44 118.5 error: could not compile `anon` (lib) due to 5 previous errors
#44 118.5 make: *** [Makefile:147: extension] Error 1
#44 ERROR: process "sh -eux -c make PGVER=\"pg${PG_MAJOR_VERSION}\"" did not complete successfully: exit code: 2

Many thanks