Build error on Fedora 41

[vmiklos]

Hi,

I ran into a weird problem while using the rust_icu_ucol crate. Fedora 40 with rustc 1.82.0 compiles this just fine:

• Cargo.toml:

[package]
name = "test"
version = "0.1.0"
edition = "2021"
[dependencies]
rust_icu_ucol = "5.0.0"

• src/main.rs:

fn main() {
}

And then on Fedora 40 cargo run passes fine. (After dnf install libicu-devel and dnf install clang-devel.)

The same fails on Fedora 41 with:

# cargo run
   Compiling rust_icu_ustring v5.0.0
   Compiling rust_icu_uenum v5.0.0
error[E0425]: cannot find function `u_strFromUTF8_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:161:13
    |
161 |             versioned_function!(u_strFromUTF8)(
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `u_strFromUTF8_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:180:13
    |
180 |             versioned_function!(u_strFromUTF8)(
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `u_strToUTF8_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:210:13
    |
210 |             versioned_function!(u_strToUTF8)(
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `u_strToUTF8_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:235:13
    |
235 |             versioned_function!(u_strToUTF8)(
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `uenum_openCharStringsEnumeration_74` in crate `$crate`
  --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:67:13
   |
67 |             versioned_function!(uenum_openCharStringsEnumeration)(
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
   |
   = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `uenum_close_74` in crate `$crate`
  --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:89:18
   |
89 |         unsafe { versioned_function!(uenum_close)(self.rep) };
   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
   |
   = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `uenum_next_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:104:28
    |
104 |         let raw = unsafe { versioned_function!(uenum_next)(self.rep, &mut len, &mut status) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `ucal_openCountryTimeZones_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:156:9
    |
156 |         versioned_function!(ucal_openCountryTimeZones)(asciiz_country.as_ptr(), &mut status)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `USystemTimeZoneType` in crate `sys`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:170:21
    |
170 |     zone_type: sys::USystemTimeZoneType,
    |                     ^^^^^^^^^^^^^^^^^^^ not found in `sys`

error[E0425]: cannot find function `ucal_openTimeZoneIDEnumeration_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:185:9
    |
185 |         versioned_function!(ucal_openTimeZoneIDEnumeration)(
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `ucal_openTimeZones_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:217:9
    |
217 |         versioned_function!(ucal_openTimeZones)(&mut status)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `uloc_openKeywords_74` in crate `$crate`
   --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:234:9
    |
234 |         versioned_function!(uloc_openKeywords)(asciiz_locale.as_ptr(), &mut status)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate`
    |
    = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info)

Some errors have detailed explanations: E0412, E0425.
For more information about an error, try `rustc --explain E0412`.
For more information about this error, try `rustc --explain E0425`.
error: could not compile `rust_icu_uenum` (lib) due to 8 previous errors
warning: build failed, waiting for other jobs to finish...
error: could not compile `rust_icu_ustring` (lib) due to 4 previous errors

The icu version in Fedora 41 is 74.2, but Fedora 40 had the same icu version. The issue is visible in fedora:40 and fedora:41 containers as well, no need to actually install any Fedora.

Once difference I found is that:

• Fedora 40 target/debug/build/rust_icu_sys-fedfbe3148238247/out/lib.rs does contain a pub fn u_strToUTF8_74 f40-lib.rs.txt

• Fedora 41 target/debug/build/rust_icu_sys-6cca77e9f12ff643/out/lib.rs indeed doesn't contain any mention of u_strToUTF8 f41-lib.rs.txt

But I'm not sure how this difference is possible, once the icu and clang development headers are installed. Do you have any guess what might be the problem?

Thanks.

[filmil]

Are you able to look into the ICU library it's attempting to link with, and see whether the symbols there are versioned to begin with? Also. if your `icu-devel` package installs `icu-config`, check whether the build flags for the ICU library are different across Fedora versions. I wouldn't be surprised if they were.

…

On Fri, Nov 8, 2024 at 1:16 PM Miklos Vajna ***@***.***> wrote: Hi, I ran into a weird problem while using the rust_icu_ucol crate. Fedora 40 with rustc 1.82.0 compiles this just fine: - Cargo.toml: [package] name = "test" version = "0.1.0" edition = "2021" [dependencies] rust_icu_ucol = "5.0.0" - src/main.rs: fn main() { } And then on Fedora 40 cargo run passes fine. (After dnf install libicu-devel and dnf install clang-devel.) The same fails on Fedora 41 with: # cargo run Compiling rust_icu_ustring v5.0.0 Compiling rust_icu_uenum v5.0.0 error[E0425]: cannot find function `u_strFromUTF8_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:161:13 | 161 | versioned_function!(u_strFromUTF8)( | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `u_strFromUTF8_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:180:13 | 180 | versioned_function!(u_strFromUTF8)( | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `u_strToUTF8_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:210:13 | 210 | versioned_function!(u_strToUTF8)( | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `u_strToUTF8_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_ustring-5.0.0/src/lib.rs:235:13 | 235 | versioned_function!(u_strToUTF8)( | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `uenum_openCharStringsEnumeration_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:67:13 | 67 | versioned_function!(uenum_openCharStringsEnumeration)( | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `uenum_close_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:89:18 | 89 | unsafe { versioned_function!(uenum_close)(self.rep) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `uenum_next_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:104:28 | 104 | let raw = unsafe { versioned_function!(uenum_next)(self.rep, &mut len, &mut status) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `ucal_openCountryTimeZones_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:156:9 | 156 | versioned_function!(ucal_openCountryTimeZones)(asciiz_country.as_ptr(), &mut status) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0412]: cannot find type `USystemTimeZoneType` in crate `sys` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:170:21 | 170 | zone_type: sys::USystemTimeZoneType, | ^^^^^^^^^^^^^^^^^^^ not found in `sys` error[E0425]: cannot find function `ucal_openTimeZoneIDEnumeration_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:185:9 | 185 | versioned_function!(ucal_openTimeZoneIDEnumeration)( | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `ucal_openTimeZones_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:217:9 | 217 | versioned_function!(ucal_openTimeZones)(&mut status) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0425]: cannot find function `uloc_openKeywords_74` in crate `$crate` --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust_icu_uenum-5.0.0/src/lib.rs:234:9 | 234 | versioned_function!(uloc_openKeywords)(asciiz_locale.as_ptr(), &mut status) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `$crate` | = note: this error originates in the macro `versioned_function` (in Nightly builds, run with -Z macro-backtrace for more info) Some errors have detailed explanations: E0412, E0425. For more information about an error, try `rustc --explain E0412`. For more information about this error, try `rustc --explain E0425`. error: could not compile `rust_icu_uenum` (lib) due to 8 previous errors warning: build failed, waiting for other jobs to finish... error: could not compile `rust_icu_ustring` (lib) due to 4 previous errors The icu version in Fedora 41 is 74.2, but Fedora 40 had the same icu version. The issue is visible in fedora:40 and fedora:41 containers as well, no need to actually install any Fedora. Once difference I found is that: - Fedora 40 target/debug/build/rust_icu_sys-fedfbe3148238247/out/lib.rs does contain a `pub fn u_strToUTF8_74` (hard to quote here, all content is in a long 3rd line) - Fedora 41 target/debug/build/rust_icu_sys-6cca77e9f12ff643/out/lib.rs indeed doesn't contain any mention of u_strToUTF8 But I'm not sure how this difference is possible, once the icu and clang development headers are installed. Do you have any guess what might be the problem? Thanks. — Reply to this email directly, view it on GitHub <#305>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAB4GMCKSMNZAR7RHEFFOYLZ7US3BAVCNFSM6AAAAABROJPZK2VHI2DSMVQWIX3LMV43ASLTON2WKOZSGY2DKMJXGAZTINY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[vmiklos]

Are you able to look into the ICU library it's attempting to link with, and see whether the symbols there are versioned to begin with?

Yes, they are versioned. Reading the spec file already suggests so:

https://src.fedoraproject.org/rpms/icu/blob/rawhide/f/icu.spec

And also a quick search confirms this:

# strings /usr/lib64/libicui18n.so.74.2|grep u_strToUTF8_74
u_strToUTF8_74

Also. if your icu-devel package installs icu-config, check whether the build flags for the ICU library are different across Fedora versions. I wouldn't be surprised if they were.

The spec file says icu was only rebuilt between the two versions. icu-config doesn't really report anything special:

# icu-config --cppflags
-I/usr/include
# icu-config --cxxflags
-std=c++11

One difference I see is that Fedora 40 ships with clang 18, while Fedora 41 has clang 19, maybe that somehow breaks bindgen to generate the correct header? If so, that would be obviously not a problem with this crate, but would be rather a problem for the broken toolchain. I tried to install the rust toolchain not from packages but from rustup to confirm this theory, but the rustup-provided toolchain emits the same error, hmm.

Edit: one more test I did: start with a clean fedora:41 container, don't install the rust toolchain from packages at all, only gcc, libicu-devel and clang-devel. Then try to compile the test crate: same error. gcc is only for linking, libicu-devel is unchanged, so perhaps the root of the trouble will be around the clang 18 -> 19, i.e. maybe something changed in libclang and that breaks bindgen or something like that? If so, again, possibly this project is just a victim of that problem, hmm.

[vmiklos]

Oh, and searching for "rust bindgen clang 19 trouble", I find rust-lang/rust-bindgen#2945 -- you currently depend on 0.59.2 in this crate and the claim is that v0.69.5 has a fix that is meant to help clang/llvm 19. Should I look into upgrading bindgen in this crate? Thanks.