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Add no_std support#277

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sanket1729 merged 1 commit intorust-bitcoin:masterfrom
mcroad:master
Jun 5, 2022
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Add no_std support#277
sanket1729 merged 1 commit intorust-bitcoin:masterfrom
mcroad:master

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@mcroad mcroad commented Oct 31, 2021 •
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Closes #201. Related to bitcoindevkit/bdk#205

Not ready.

Maintains backward compatibility. To use it in a no_std context set default-features = false and enable the no-std feature.

To the maintainers: I added the no-std-compat crate. It wraps core and hashbrown and makes them look like std. This is a different than what rust-bitcoin did. They use core and hashbrown directly. I believe using no-std-compat makes the code more readable. I'd like to hear your thoughts on this. Now using hashbrown and core directly.

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mcroad commented Oct 31, 2021

I need help getting the rust 1.29.0 tests to pass. Specific test here: https://github.com/mcroad/rust-miniscript/runs/4061570991.

Run ./contrib/test.sh
+ FEATURES=compiler rand use-serde
+ [ -n  ]
+ [  = true ]
+ [  = true ]
+ cargo test --verbose
 Downloading bitcoin v0.27.1
 Downloading no-std-compat v0.4.1
error: unable to get packages from source

Caused by:
  failed to parse manifest at `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/no-std-compat-0.4.1/Cargo.toml`

Caused by:
  editions are unstable

Caused by:
  feature `edition` is required

this Cargo does not support nightly features, but if you
switch to nightly channel you can add
`cargo-features = ["edition"]` to enable this feature
Error: Process completed with exit code 101.

I'm not familiar enough with this version of rust to debug it.

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sanket1729 commented Nov 3, 2021

I think this is because no-std-compat does not support rust 1.29 :(. I am not well versed with embedded code, maybe that is the reason why rust-bitcoin uses the underlying crates directly?

This was referenced Nov 5, 2021
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mcroad commented Nov 13, 2021

Removed the no-std-compat. All test pass. Waiting on rust-bitcoin/rust-bitcoin#637 to be released and for an answer regarding no_std MSRV rust-bitcoin/rust-bitcoin#690.

Please approve CI workflow.

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sanket1729 commented Nov 13, 2021

Sorry, Github is annoying for first-time contributors.

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apoelstra commented Dec 23, 2021

Approved the github workflow.

apoelstra added a commit to rust-bitcoin/rust-bitcoin that referenced this pull request Apr 30, 2022
@apoelstra
Merge #690: BUG: Does not work with no_std under 1.29 (MSRV)
ff6dc61 
7854bd7 Fix `no_std` MSRV Fixes #690, #947 (mcroad)

Pull request description:

  `rust-bitcoin` does not work with rust 1.29 under a `no_std` environment. This could be considered a bug. However, `no_std` support is a recent addition and this is likely not breaking anyone's builds.

  A decision needs to be made, either `no_std` MSRV is the current stable version while keeping the `std` MSRV as 1.29, or it needs to be fixed.

  This pr adds `no_std` to the 1.29 test suite.

  This came as I try to get rust-bitcoin/rust-miniscript#277 working and got stuck on the issue of testing `no_std` under 1.29.

ACKs for top commit:
  Kixunil:
    ACK 7854bd7
  tcharding:
    ACK 7854bd7
  sanket1729:
    ACK 7854bd7
  apoelstra:
    ACK 7854bd7

Tree-SHA512: 1614fb2193f760ed340592bdb94d076066f6f783bc1dc2b145d97f7151a28316e56b1975f1ad948460eb26db04e7e9382e60076686a681e46dcf33521fda5fca
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mcroad commented May 1, 2022

Last 2 items on the checklist are done. Will squash and rebase on master.

@mcroad mcroad force-pushed the master branch 2 times, most recently from e603e44 to da43e40 Compare May 2, 2022 01:07
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mcroad commented May 2, 2022

@apoelstra Given rust-bitcoin moved it's MSRV to 1.41.1, will rust-miniscript follow suit?

@sanket1729 sanket1729 marked this pull request as ready for review May 2, 2022 23:33
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sanket1729 commented May 2, 2022

@mcroad, we just moved to 2018 and this PR now has lots of conflicts. Sorry about that.

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mcroad commented May 3, 2022

Just rebased. Still working on the PR. It's not ready for review.

@mcroad mcroad force-pushed the master branch 2 times, most recently from 778e65e to f8855d1 Compare May 3, 2022 03:10
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mcroad commented May 3, 2022

All test pass but PR will not be final until rust-bitcoin/rust-bitcoin#690 is released.

https://github.com/mcroad/rust-miniscript/actions/runs/2261662000

Until then, I await your comments on the PR as it is.

apoelstra
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sanket1729 commented May 19, 2022

Sorry about this, but this would face a lot of conflicts because of our move to 2018. We can focus on getting no-std in rust-miniscript now that it is released in rust-bitcoin.

@mcroad mcroad force-pushed the master branch 7 times, most recently from 2af2fc9 to c1d4345 Compare May 22, 2022 21:33
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mcroad commented May 22, 2022

Rebased and finally got tests to pass.

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sanket1729 commented May 26, 2022

@mcroad Really sorry again for the conflicts. I will put this on top of my review list so that there are no more conflicts after this one

@mcroad mcroad force-pushed the master branch 8 times, most recently from 3f8d447 to 28d304e Compare May 28, 2022 05:18
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mcroad commented May 28, 2022

Rebased again.

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ACK 28d304e

I'm a little sad to see that we can no longer compile without default features, but I guess that's been true of rust-bitcoin for a long time, so c'est la vie.

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Thanks for the PR. We can address the comments in a follow PR if required.

I have zero expirience in no-std development. I just tried to follow the instructions to build the no-std build. Initially, I could not get it to build and tried to mimic the CI. Installing the rust-src component seemed to do the trick. Should we also that in the README?

I ran into a linker error:

sanket1729:~/rust-miniscript/embedded$ echo $RUSTFLAGS
-C link-arg=-Tlink.x

sanket1729:~/rust-miniscript/embedded$ echo $CARGO_TARGET_THUMBV7M_NONE_EABI_RUNNER
qemu-system-arm -cpu cortex-m3 -machine mps2-an385 -nographic -semihosting-config enable=on,target=native -kernel

sanket1729:~/rust-miniscript/embedded$ cargo run +nightly --target thumbv7m-none-eabi
Compiling typenum v1.15.0
Compiling cortex-m v0.7.4
Compiling proc-macro2 v1.0.39
Compiling libc v0.2.126
Compiling memchr v2.5.0
Compiling syn v1.0.95
Compiling cortex-m-rt v0.6.15
Compiling cortex-m v0.6.7
error: linking with cc failed: exit status: 1
= note: "cc" "-m64" "/tmp/rustcu8JyXT/symbols.o" "/home/sanket1729/rust-miniscript/embedded/target/debug/build/cortex-m-78cb07deae82bed4/build_script_build-78cb07deae82bed4.build_script_build.2257045c-cgu.0.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/debug/build/cortex-m-78cb07deae82bed4/build_script_build-78cb07deae82bed4.build_script_build.2257045c-cgu.1.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/debug/build/cortex-m-78cb07deae82bed4/build_script_build-78cb07deae82bed4.build_script_build.2257045c-cgu.10.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/debug/build/cortex-m-78cb07deae82bed4/build_script_build-78cb07deae82bed4.build_script_build.2257045c-cgu.11.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/debug/build/cortex-m-78cb07deae82bed4/build_script_build-78cb07deae82bed4.build_script_build.2257045c-cgu.12.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/debug/build/cortex-m-78cb07deae82bed4/build_script_build-78cb07deae82bed4.build

Probably, something else might be off in my system because the following works 🤷

RUSTFLAGS=$RUSTFLAGS CARGO_TARGET_THUMBV7M_NONE_EABI_RUNNER=$CARGO_TARGET_THUMBV7M_NONE_EABI_RUNNER cargo run --target thumbv7m-none-eabi --release
Finished release [optimized + debuginfo] target(s) in 0.02s

  1. I am also not able to build this in debug mode (without the --release flag). Is this expected?

Compiling embedded v0.1.0 (/home/sanket1729/rust-miniscript/embedded)
error: linking with rust-lld failed: exit status: 1
|
= note: "rust-lld" "-flavor" "gnu" "/tmp/rustc90zJr1/symbols.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1a4vfh3jry9qhmtf.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1aoq3x7wmhn8n29u.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1b8rm12f45qaldm2.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1h6zyj1rmnpmfcoi.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1itggcb0fccfedej.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1k8nddveuc69crrg.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1kuhmdd5hcuxpir8.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1lc2im5g0e0lu66d.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1nam0vrwxtu0s903.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1pzhzutagmqjg64z.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1u7uty6l4hxvj89p.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1u9ph96gmb8vymbh.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.1uel84j51kktbvcm.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.23c0uin0qhigctw.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.24eq9zezcp1zrsmt.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.251oqgzfi9t5az0y.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.2a6qgbkabaaclpvc.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.2j7gbbp2u9sykfgo.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.2k8irx23kmk13rk6.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.2r9whzo63erlzygp.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.2x525qruyaeln3nr.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3b5k6z5sphn7j3pl.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3bv8lgwtl141o5pj.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3m75df4qbs5wjltp.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3n3eeumeiyxvb2mo.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3nkoszhj0sxtzc94.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3qjzqm0l32uclc5z.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3s0ohddi4j5jayga.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3sh0l8v86dqb6k25.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.439wmgcig5q70hpt.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.456gzcon6482dqlt.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.48ycblph89kak52b.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4dkbcmqoteiqjb9r.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4eob32fyhrzpmg0a.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4ernbojsis0t20rg.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4hnu9bhv3y9syh5g.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4o58r3nx75v3a8b2.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4oqndp04mbr4zwx6.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4t6q0gvit5vmtqh2.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4v9i8wqsssropkr7.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.4z58clcdwpuno69g.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.512qk1ak5bimee9p.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.51aupj3hj8733ih0.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.5b5q4lecv8en8ted.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.5buru3ykyz9m97sh.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.5cjlfujuitjcc6cv.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.cgvhk5ocpbte80m.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.egkotks9bo7ddef.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.g51hkg8i617m5wd.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.gk60olq4xfsfvq6.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.ijujnka561m924c.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.xzuqetkl9uhq6et.rcgu.o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788.3c6nn0krnharmlvm.rcgu.o" "--as-needed" "-L" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps" "-L" "/home/sanket1729/rust-miniscript/embedded/target/debug/deps" "-L" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/build/cortex-m-aeea63aea6ffdc2f/out" "-L" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/build/cortex-m-rt-076aecb144ce0d41/out" "-L" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/build/cortex-m-semihosting-a68a8a89ca250f7f/out" "-L" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/build/secp256k1-sys-1d469d5bff022d46/out" "-L" "/home/sanket1729/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/thumbv7m-none-eabi/lib" "-Bstatic" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libminiscript-bc8f8ca73da25eca.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libbitcoin-ec03fc4a63c88d70.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libhashbrown-2288f4321118a88f.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libahash-6cc44301a08b6cd7.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libbech32-990ecd751650535e.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libsecp256k1-ad59a94bc87e11e8.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libsecp256k1_sys-c03b8d37363bd6ad.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libbitcoin_hashes-16d8139e1876d7d7.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libcore2-b53703a46090b77a.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libhashbrown-9c86b8600d94aec9.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libahash-2e4b8b19a0c5ef7f.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libcortex_m_semihosting-424ad78302277fc2.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libcortex_m_rt-367afd52f356e9af.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libr0-777d267c3f5e883a.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libcortex_m-58c69b609c826e0c.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libaligned-efb924f7f569df32.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libas_slice-7cc634893bc17dca.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libstable_deref_trait-659fd4fc938e6d63.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libgeneric_array-f32408a42fd0c608.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libgeneric_array-48c0a4d35713388a.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libgeneric_array-2acafc3aedb05a8a.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libtypenum-6293bcb1e7be9b07.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/liballoc_cortex_m-902a7616d29b0ddc.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/liblinked_list_allocator-a436f22cf48dfc61.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libcortex_m-9a6749038f6e8315.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libembedded_hal-be2cd19e255d0054.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libvoid-c3ac384dc77c7432.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libnb-44e1f3fb8154762e.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libnb-d2fd7374c8472436.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libvolatile_register-31350fb3fd26a60d.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libvcell-5928b0c31e98c32b.rlib" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/libbare_metal-2ebd85282e1bb3be.rlib" "/home/sanket1729/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/thumbv7m-none-eabi/lib/liballoc-b1f8a41d3c5b29df.rlib" "/home/sanket1729/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/thumbv7m-none-eabi/lib/librustc_std_workspace_core-ba626387a2e50982.rlib" "/home/sanket1729/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/thumbv7m-none-eabi/lib/libcore-bc639632082e340c.rlib" "/home/sanket1729/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/thumbv7m-none-eabi/lib/libcompiler_builtins-87b489c55aae9c9f.rlib" "-Bdynamic" "--eh-frame-hdr" "-znoexecstack" "-L" "/home/sanket1729/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/thumbv7m-none-eabi/lib" "-o" "/home/sanket1729/rust-miniscript/embedded/target/thumbv7m-none-eabi/debug/deps/embedded-46e018162ba49788" "--gc-sections" "-Tlink.x"
= note: rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 263 bytes
rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 274 bytes
rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 276 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 276 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 276 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 280 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 284 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 288 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 288 bytes
rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 263 bytes
rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 274 bytes
rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 276 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 276 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 276 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 280 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 284 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 288 bytes
rust-lld: error: section '.data' will not fit in region 'FLASH': overflowed by 288 bytes
rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 263 bytes
rust-lld: error: section '.rodata' will not fit in region 'FLASH': overflowed by 274 bytes
rust-lld: error: too many errors emitted, stopping now (use -error-limit=0 to see all errors)

error: could not compile embedded due to previous error

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sanket1729 previously approved these changes Jun 1, 2022
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ACK 28d304e

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sanket1729 commented Jun 3, 2022

@mcroad, really sorry for the last time. This has conflicts again. After your next rebase, we can merge this and address the issues in follow-up PRs.

@mcroad mcroad dismissed stale reviews from sanket1729 and apoelstra via ac16e05 June 5, 2022 04:33
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mcroad commented Jun 5, 2022

Rebased and documented no_std Mutex stub.

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ACK ac16e05

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sanket1729 commented Jun 5, 2022

Reviewed the range-diff. Merging this to avoid further conflicts. @mcroad, can you please clarify if the debug build is supposed to fail as mentioned in my comment above?

@sanket1729 sanket1729 merged commit ea76eb1 into rust-bitcoin:master Jun 5, 2022
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mcroad commented Jun 6, 2022

The debug build fails because the produced binary is too big to fit within 2048K limit defined in embedded/memory.x. As I continue to explore and use rust-miniscript in embedded contexts, I may submit another PR to further optimize the build to produce smaller binaries.

Thanks to all who reviewed this PR.

ChallengeDev210 pushed a commit to ChallengeDev210/rust-bitcoin that referenced this pull request Aug 1, 2022
@apoelstra
Merge rust-bitcoin/rust-bitcoin#690: BUG: Does not work with no_std…
aef788b 
… under 1.29 (MSRV)

7854bd7 Fix `no_std` MSRV Fixes #690, #947 (mcroad)

Pull request description:

  `rust-bitcoin` does not work with rust 1.29 under a `no_std` environment. This could be considered a bug. However, `no_std` support is a recent addition and this is likely not breaking anyone's builds.

  A decision needs to be made, either `no_std` MSRV is the current stable version while keeping the `std` MSRV as 1.29, or it needs to be fixed.

  This pr adds `no_std` to the 1.29 test suite.

  This came as I try to get rust-bitcoin/rust-miniscript#277 working and got stuck on the issue of testing `no_std` under 1.29.

ACKs for top commit:
  Kixunil:
    ACK 7854bd7
  tcharding:
    ACK 7854bd7
  sanket1729:
    ACK 7854bd7
  apoelstra:
    ACK 7854bd7

Tree-SHA512: 1614fb2193f760ed340592bdb94d076066f6f783bc1dc2b145d97f7151a28316e56b1975f1ad948460eb26db04e7e9382e60076686a681e46dcf33521fda5fca
heap-coder added a commit to heap-coder/rust-miniscript that referenced this pull request Sep 27, 2025
@heap-coder
Merge rust-bitcoin/rust-miniscript#277: Add no_std support
d6df659 
ac16e05aa9943152e4235b490fd4ad03a496a7c1 Add no_std support (mcroad)

Pull request description:

  Closes #201. Related to bitcoindevkit/bdk#205

  Not ready.

  - [x] `no_std` example
  - [x] updated readme with instructions
  - [x] tests pass
  - [x] rust-bitcoin/rust-bitcoin#637 includes `secp256k1/alloc` feature in `bitcoin/no-std`. Released on `0.28.0`
  - [x] rust-bitcoin/rust-bitcoin#690 Rust `1.47` set as `no_std` MSRV. Released in `0.28.1`.

  Maintains backward compatibility. To use it in a `no_std` context set `default-features = false` and enable the `no-std` feature.

  ~~To the maintainers: I added the `no-std-compat` crate. It wraps `core` and `hashbrown` and makes them look like `std`. This is a different than what `rust-bitcoin` did. They use `core` and `hashbrown` directly. I believe using `no-std-compat` makes the code more readable. I'd like to hear your thoughts on this.~~ Now using `hashbrown` and `core` directly.

ACKs for top commit:
  sanket1729:
    ACK ac16e05aa9943152e4235b490fd4ad03a496a7c1

Tree-SHA512: 5c26cb50374b7844acbcc5a7607f5710ce19ec0aff4caed1346ed4a2fb708a909205a7d87cc27a773624f43b2a99a71c3ba4bb1cdf2dfec0584833df00b9f032
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no_std support

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