use case: cross-compiling to macOS with a dependency on iconv #10485
Comments
hzuo
changed the title
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Seems related to #9725 |
andrewrk
added
the
regression
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Since you're invoking Zig with Note that this is also conditional on this fix #10568 |
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@hzuo OK, I seem to have misunderstood the issue, however, it is not a regression per se. Let me explain. The behaviour (and error) are actually correct. @andrewrk do you think we should leave it at status quo of this being a hard error? I for one stand by this and believe it should always be a hard error. |
andrewrk
removed
bug
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Yes if you specify to link a library with As for how to solve @hzuo's problem, they will need to provide an iconv to link against when cross compiling, or if possible, pass a build configuration option telling it to not depend on iconv. If you wish to use zig cc to cross compile and you want to avoid a macOS SDK, I suggest to first cross-compile iconv with zig, then you will have a static iconv build that you can link against. I will leave this open for a while as a "use case" to remind us that solving this problem somehow could help Rust folks - but there is a good chance that it will be eventually closed with no solution. |
andrewrk
added
enhancement
andrewrk
changed the title
Allow developers to opt for libiconv variant instead of the built-in
iconv support of their platform.
This helps with cross-compilation of binaries to platforms like macOS,
which requires bulky SDK being installed in order to support linking to
their bundled `iconv` library.
Alternatively, developer should be able to build a static version of
iconv (`libiconv`) and be able to link with it by forcing its usage with
`-Duse_libiconv`:
$ crystal build app.cr \
--cross-compile --target x86_64-apple-darwin -Duse_libiconv
Relevant links:
- https://forum.crystal-lang.org/t/macos-compilation-and-libiconv-support/4439
- ziglang/zig#10485 (comment)
Zig Version
0.9.0
Steps to Reproduce
Importantly, this was working fine on Zig 0.8.1.
On a Linux x86_64 system, with the following environment variables:
/tmp/zig/zig-cc.sh:
Rust has the appropriate toolchain installed as well via
rustup target add x86_64-apple-darwin.Running the following fails:
cargo build --release --target x86_64-apple-darwinExpected Behavior
Cross-compiling should succeed, as it previously did on 0.8.1.
Actual Behavior
The error message:
Seems that 0.9.0 can't find iconv but 0.8.1 was able to?
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