Compilation error with target x86_64-apple-ios

[CedricCouton]

Hi,

I encountered some errors during compilation when I compile with the target x86_64-apple-ios (it's ok with aarch64-apple-ios)
An exemple of error :
cargo:warning=couchbase-lite-core/vendor/fleece/API/fleece/FLSlice.h:18:19: note: expanded from macro 'FLAPI' cargo:warning= #define FLAPI noexcept cargo:warning= ^ cargo:warning=couchbase-lite-core/vendor/fleece/API/fleece/FLSlice.h:107:41: error: expected function body after function declarator cargo:warning=FLSliceResult FLSliceResult_New(size_t) FLAPI; cargo:warning=

After some research I found that noexcept is compilable with c++11 flag, so my is solution :
In build.rs (lig 116) I force the flag with .flag("-std=c++11") instead of flag_if_supported("-std=c++11")
But I don't understand why my compilation it is ok now. If the flag_if_supported don't add the flag because it is not supported (this is what the code do), if I force it with .flag and the compilation is ok, this indicates that it is supported, isn't it ?

Thanks

[Dushistov]

Looks like bug in https://github.com/alexcrichton/cc-rs , I will try to reproduce.

[Dushistov]

I can not reproduce.
I tried with current master and all compiles just fine.

cd /Users/evgeniy/projects/rust-infra/couchbase-lite-rust/couchbase-lite
git submodule update --init --recursive
cargo build --target=x86_64-apple-ios

[agg23]

Am experiencing this on the M1 simulator:

cargo build --target=aarch64-apple-ios-sim

Thanks @CedricCouton for the fix.

[Dushistov]

This is cmake-rs issue: rust-lang/cmake-rs#96 .

And now you can build couchbase-lite-core manually and use COUCHBASE_LITE_CORE_BUILD_DIR COUCHBASE_LITE_CORE_SRC_DIR and proper features to link with your copy of couchbase. Example can be found here