can't not build at aarch64 #121

z2665 · 2019-04-24T07:44:42Z

I have project need to build for aarch64 Architecture.
when build rust-rdkafka-0.20. I got some error.

 --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/client.rs:120:76
    |
120 |         unsafe { rdsys::rd_kafka_conf_set_log_cb(native_config.ptr(), Some(native_log_cb::<C>)) };
    |                                                                            ^^^^^^^^^^^^^^^^^^ expected u8, found i8
    |
    = note: expected type `unsafe extern "C" fn(*const rdsys::rd_kafka_s, i32, *const u8, *const u8)`
               found type `unsafe extern "C" fn(*const rdsys::rd_kafka_s, i32, *const i8, *const i8) {client::native_log_cb::<C>}`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/client.rs:121:78
    |
121 |         unsafe { rdsys::rd_kafka_conf_set_stats_cb(native_config.ptr(), Some(native_stats_cb::<C>)) };
    |                                                                              ^^^^^^^^^^^^^^^^^^^^ expected u8, found i8
    |
    = note: expected type `unsafe extern "C" fn(*mut rdsys::rd_kafka_s, *mut u8, usize, *mut std::ffi::c_void) -> i32`
               found type `unsafe extern "C" fn(*mut rdsys::rd_kafka_s, *mut i8, usize, *mut std::ffi::c_void) -> i32 {client::native_stats_cb::<C>}`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/client.rs:122:78
    |
122 |         unsafe { rdsys::rd_kafka_conf_set_error_cb(native_config.ptr(), Some(native_error_cb::<C>)) };
    |                                                                              ^^^^^^^^^^^^^^^^^^^^ expected u8, found i8
    |
    = note: expected type `unsafe extern "C" fn(*mut rdsys::rd_kafka_s, i32, *const u8, *mut std::ffi::c_void)`
               found type `unsafe extern "C" fn(*mut rdsys::rd_kafka_s, i32, *const i8, *mut std::ffi::c_void) {client::native_error_cb::<C>}`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/client.rs:125:74
    |
125 |             rdsys::rd_kafka_new(rd_kafka_type, native_config.ptr_move(), errstr.as_ptr() as *mut i8, errstr.len())
    |                                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected u8, found i8
    |
    = note: expected type `*mut u8`
               found type `*mut i8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/client.rs:274:30
    |
274 |     let fac = CStr::from_ptr(fac).to_string_lossy();
    |                              ^^^ expected u8, found i8
    |
    = note: expected type `*const u8`
               found type `*const i8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/client.rs:275:38
    |
275 |     let log_message = CStr::from_ptr(buf).to_string_lossy();
    |                                      ^^^ expected u8, found i8
    |
    = note: expected type `*const u8`
               found type `*const i8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/client.rs:309:33
    |
309 |     let reason = CStr::from_ptr(reason).to_string_lossy();
    |                                 ^^^^^^ expected u8, found i8
    |
    = note: expected type `*const u8`
               found type `*const i8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/config.rs:154:44
    |
154 |                                            errstr.as_ptr() as *mut i8, errstr.len())
    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected u8, found i8
    |
    = note: expected type `*mut u8`
               found type `*mut i8`

error[E0308]: mismatched types
  --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/consumer/mod.rs:54:52
   |
54 |                 let error = unsafe { cstr_to_owned(rdsys::rd_kafka_err2str(err)) };
   |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected i8, found u8
   |
   = note: expected type `*const i8`
              found type `*const u8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/consumer/base_consumer.rs:179:48
    |
179 |             let error = unsafe { cstr_to_owned(rdsys::rd_kafka_err2str(ret_code)) };
    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected i8, found u8
    |
    = note: expected type `*const i8`
               found type `*const u8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/consumer/base_consumer.rs:192:48
    |
192 |             let error = unsafe { cstr_to_owned(rdsys::rd_kafka_err2str(ret_code)) };
    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected i8, found u8
    |
    = note: expected type `*const i8`
               found type `*const u8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/util.rs:106:20
    |
106 |     CStr::from_ptr(bytes_cstr.as_ptr()).to_string_lossy().into_owned()
    |                    ^^^^^^^^^^^^^^^^^^^ expected u8, found i8
    |
    = note: expected type `*const u8`
               found type `*const i8`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/mirrors.ustc.edu.cn-b63e9dae659fc205/rdkafka-0.20.0/src/util.rs:111:20
    |
111 |     CStr::from_ptr(cstr).to_string_lossy().into_owned()
    |                    ^^^^ expected u8, found i8
    |
    = note: expected type `*const u8`
               found type `*const i8`

error: aborting due to 13 previous errors

The text was updated successfully, but these errors were encountered:

flavray · 2019-04-25T08:52:00Z

I've done some digging. It seems to come from the definition of c_char.
For most architectures, it's mapped to be i8. For some architectures however (like aarch64), it's mapped to u8.

It may just be a matter of casting all of these with as ::std::os::raw::c_char. I'll try to get this fixed asap!

z2665 · 2019-07-09T07:26:38Z

@flavray I try to solve this problem. use the as ::std::os::raw::c_char.
my way may not the best. but it can build in aarch64 Architecture now.

AlexanderThaller · 2019-07-17T10:52:28Z

I have the same problem for armv7. The pull request seems to fix it.

When I built on arm (aarch64), I got this compiler error: ``` Compiling sudo-rs v0.2.0-dev.20230703 (/sudo-rs) error[E0308]: mismatched types --> src/pam/mod.rs:217:44 | 217 | let cstr = unsafe { CStr::from_ptr(data as *const i8) }; | -------------- ^^^^^^^^^^^^^^^^^ expected `*const u8`, found `*const i8` | | | arguments to this function are incorrect | = note: expected raw pointer `*const u8` found raw pointer `*const i8` note: associated function defined here --> /home/build/rustc-1.70.0-src/library/core/src/ffi/c_str.rs:260:25 For more information about this error, try `rustc --explain E0308`. ``` After some research, I learned that this is an architecture issue - on many platforms char is mapped to i8, but not on aarch64. Here's a source: fede1024/rust-rdkafka#121 With this change it now builds successfully on arm! Signed-off-by: Dan Lorenc <dlorenc@chainguard.dev>

z2665 mentioned this issue Jul 9, 2019

Fix arm build #134

Merged

benesch mentioned this issue Oct 22, 2019

Fix ARM build, and test it in CI #162

Merged

benesch closed this as completed in #162 Oct 22, 2019

adarshp mentioned this issue May 1, 2023

Fixing Docker builds on aarch64 memgraph/rsmgclient#44

Merged

matschaffer-roblox mentioned this issue May 10, 2023

Arm compatibility issues keeperofdakeys/dns-lookup#28

Closed

plicease mentioned this issue Jun 14, 2023

use u8 for string examples instead of i8 PerlFFI/FFI-Platypus-Lang-Rust#41

Closed

dlorenc mentioned this issue Jul 5, 2023

Fix builds on arm by changing from i8 to c_char. trifectatechfoundation/sudo-rs#653

Merged

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can't not build at aarch64 #121

can't not build at aarch64 #121

z2665 commented Apr 24, 2019

flavray commented Apr 25, 2019

z2665 commented Jul 9, 2019

AlexanderThaller commented Jul 17, 2019

can't not build at aarch64 #121

can't not build at aarch64 #121

Comments

z2665 commented Apr 24, 2019

flavray commented Apr 25, 2019

z2665 commented Jul 9, 2019

AlexanderThaller commented Jul 17, 2019