# Building JaneStreet CoreBench **URL:** \ **Category:** Learning\ **Created:** [July 6, 2021, 5:28pm UTC](https://discuss.ocaml.org/t/building-janestreet-corebench/8100 "2021-07-06T17:28:15Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![idkjs](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/idkjs/32/675_2.png) [@idkjs](https://discuss.ocaml.org/u/idkjs)\ **Post date:** [July 6, 2021, 5:28pm UTC](https://discuss.ocaml.org/t/building-janestreet-corebench/8100/1 "2021-07-06T17:28:16Z")
I feel like I am unable to build Jane Street repositories for some reason. I just came across this again. Steps taken this time are: ```auto >gh repo clone janestreet/core_bench >opam switch create . ocaml-base-compiler.4.12.0 --no-install > make ``` After that its: ```auto dune external-lib-deps --missing @@default Error: The following libraries are missing in the default context: - core.command_unix - core.filename_unix - core.time_stamp_counter - core.time_unix - core_kernel.core - core_kernel.version_util - ppx_jane - re - textutils.ascii_table Hint: try: opam install core core_kernel ppx_jane re textutils >opam install core core_kernel ppx_jane re textutils >make dune build File "src/bench.ml", line 66, characters 17-23: 66 | ignore (f ()) ^^^^^^ Error: Jane Street style: Ignored expression must come with a type annotation File "src/benchmark.ml", line 63, characters 15-21: 63 | ignore (f ()) ^^^^^^ Error: Jane Street style: Ignored expression must come with a type annotation File "inline_benchmarks_runner_lib_public/bin/dune", line 3, characters 12-28: 3 | (libraries core_kernel.core inline_benchmarks_public) ^^^^^^^^^^^^^^^^ Error: Library "core_kernel.core" not found. Hint: try: dune external-lib-deps --missing @@default File "inline_benchmarks_runner_lib_public/src/dune", line 3, characters 30-46: 3 | (libraries core.command_unix core_kernel.core core_bench re ^^^^^^^^^^^^^^^^ Error: Library "core_kernel.core" not found. Hint: try: dune external-lib-deps --missing @@default File "src/dune", line 3, characters 26-40: 3 | core.time_stamp_counter core.time_unix core_kernel.version_util) ^^^^^^^^^^^^^^ Error: Library "core.time_unix" not found. Hint: try: dune external-lib-deps --missing @@default make: *** [default] Error 1 …andalarian ~/G/core_bench (master) [2] dune external-lib-deps --missing @@default ``` Then it goes in circles like that. I also tried installing `janestreet-bleeding` per their suggestion on the the `janestreet/base` repo but it did not help. Any guidance would be greatly appreciated. ---
**Author:** ![bcc32](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/bcc32/32/203_2.png) [@bcc32](https://discuss.ocaml.org/u/bcc32)\ **Post date:** [July 6, 2021, 7:33pm UTC](https://discuss.ocaml.org/t/building-janestreet-corebench/8100/2 "2021-07-06T19:33:48Z")
Just to double check, after adding the `janestreet-bleeding` repo, did you update and upgrade packages in the switch? FWIW, I don’t think the bleeding packages will build on 4.12.0, since we’re on 4.11.1 internally. I was able to build the `core_bench` repo by running: ```bash opam switch create . ocaml-base-compiler.4.11.1 --no-install opam repo add janestreet-bleeding https://ocaml.janestreet.com/opam-repository eval "$(opam env)" opam install core core_kernel textutils make ``` ---
**Author:** ![idkjs](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/idkjs/32/675_2.png) [@idkjs](https://discuss.ocaml.org/u/idkjs)\ **Post date:** [July 10, 2021, 7:52am UTC](https://discuss.ocaml.org/t/building-janestreet-corebench/8100/3 "2021-07-10T07:52:49Z")
> [@bcc32](#): > > `opam install core core_kernel textutils` Thank you, @bcc32 for the guidance. When running `opam install core core_kernal textutils` you get an `ERROR while compiling ocaml_intrinsics.v0.15~preview.124.35+330`: ```sh mando@mandalarian ~/G/core_bench (master)> opam install core core_kernel textutils [NOTE] Package core_kernel is already installed (current version is v0.15~preview.124.35+330). The following actions will be performed: ∗ install ocaml_intrinsics v0.15~preview.124.35+330 [required by core] ∗ install core v0.15~preview.124.35+330 ∗ install textutils v0.15~preview.124.35+330 ===== ∗ 3 ===== Do you want to continue? [Y/n] y <><> Gathering sources ><><><><><><><><><><><><><><><><><><><><><><><><><><> 🐫 [ocaml_intrinsics.v0.15~preview.124.35+330] downloaded from https://github.com/janestreet/ocaml_intrinsics/archive/0654b7e6c6cd3818dd07c24ed36cc2399122757c.tar.gz [textutils.v0.15~preview.124.35+330] downloaded from https://github.com/janestreet/textutils/archive/4dd1d3afb990054e7e42365ac44f660810d24055.tar.gz [core.v0.15~preview.124.35+330] downloaded from https://github.com/janestreet/core/archive/93dcd36f152b124523dd2584b1fcdcd33d134565.tar.gz <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><> 🐫 [ERROR] The compilation of ocaml_intrinsics failed at "/Users/mando/.opam/opam-init/hooks/sandbox.sh build dune build -p ocaml_intrinsics -j 7". #=== ERROR while compiling ocaml_intrinsics.v0.15~preview.124.35+330 ==========# # context 2.0.8 | macos/x86_64 | ocaml-base-compiler.4.11.1 | https://ocaml.janestreet.com/opam-repository # path ~/Github/core_bench/_opam/.opam-switch/build/ocaml_intrinsics.v0.15~preview.124.35+330 # command ~/.opam/opam-init/hooks/sandbox.sh build dune build -p ocaml_intrinsics -j 7 # exit-code 1 # env-file ~/.opam/log/ocaml_intrinsics-49976-b1a82b.env # output-file ~/.opam/log/ocaml_intrinsics-49976-b1a82b.out ### output ### # cc src/crc_stubs.o (exit 1) # (cd _build/default/src && /usr/bin/cc -O2 -fno-strict-aliasing -fwrapv -D_FILE_OFFSET_BITS=64 -D_REENTRANT -O2 -fno-strict-aliasing -fwrapv -mpopcnt -mlzcnt -mbmi -mprfchw -mprefetchwt1 -g -I /Users/mando/Github/core_bench/_opam/lib/ocaml -o crc_stubs.o -c crc_stubs.c) # crc_stubs.c:8:11: error: '__builtin_ia32_crc32di' needs target feature sse4.2 # return __builtin_ia32_crc32di(initial, data); # ^ # 1 error generated. <><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><> 🐫 ┌─ The following actions failed │ λ build ocaml_intrinsics v0.15~preview.124.35+330 └─ ╶─ No changes have been performed ``` Then i tried pinning it to see if it would help. It did not. ```sh > opam pin add -y https://github.com/janestreet/ocaml_intrinsics.git [ocaml_intrinsics] synchronised from git+https://github.com/janestreet/ocaml_intrinsics.git [ocaml_intrinsics.v0.15~preview.124.35+330] synchronised from git+https://github.com/janestreet/ocaml_intrinsics.git ocaml_intrinsics is now pinned to git+https://github.com/janestreet/ocaml_intrinsics.git (version v0.15~preview.124.35+330) The following actions will be performed: ∗ install ocaml_intrinsics v0.15~preview.124.35+330* [ocaml_intrinsics.v0.15~preview.124.35+330] synchronised from git+https://github.com/janestreet/ocaml_intrinsics.git <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><> 🐫 [ERROR] The compilation of ocaml_intrinsics failed at "/Users/mando/.opam/opam-init/hooks/sandbox.sh build dune build -p ocaml_intrinsics -j 7". #=== ERROR while compiling ocaml_intrinsics.v0.15~preview.124.35+330 ==========# # context 2.0.8 | macos/x86_64 | ocaml-base-compiler.4.11.1 | pinned(git+https://github.com/janestreet/ocaml_intrinsics.git#0654b7e6) # path ~/Github/core_bench/_opam/.opam-switch/build/ocaml_intrinsics.v0.15~preview.124.35+330 # command ~/.opam/opam-init/hooks/sandbox.sh build dune build -p ocaml_intrinsics -j 7 # exit-code 1 # env-file ~/.opam/log/ocaml_intrinsics-50255-a4abd5.env # output-file ~/.opam/log/ocaml_intrinsics-50255-a4abd5.out ### output ### # cc src/crc_stubs.o (exit 1) # (cd _build/default/src && /usr/bin/cc -O2 -fno-strict-aliasing -fwrapv -D_FILE_OFFSET_BITS=64 -D_REENTRANT -O2 -fno-strict-aliasing -fwrapv -mpopcnt -mlzcnt -mbmi -mprfchw -mprefetchwt1 -g -I /Users/mando/Github/core_bench/_opam/lib/ocaml -o crc_stubs.o -c crc_stubs.c) # crc_stubs.c:8:11: error: '__builtin_ia32_crc32di' needs target feature sse4.2 # return __builtin_ia32_crc32di(initial, data); # ^ # 1 error generated. <><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><> 🐫 ┌─ The following actions failed │ λ build ocaml_intrinsics v0.15~preview.124.35+330 └─ ╶─ No changes have been performed [NOTE] Pinning command successful, but your installed packages may be out of sync. mando@mandalarian ~/G/core_bench (master) [31]> ``` Is this an issue i should create? ---
**Author:** ![bcc32](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/bcc32/32/203_2.png) [@bcc32](https://discuss.ocaml.org/u/bcc32)\ **Post date:** [July 12, 2021, 10:24pm UTC](https://discuss.ocaml.org/t/building-janestreet-corebench/8100/5 "2021-07-12T22:24:20Z")
I’m not sure in this case. It looks like `ocaml_intrinsics` is a new library, maybe the conditional compilation incantations aren’t quite correct for determining whether that intrinsic is available. Please do create a GitHub issue (you can create one on the ocaml\_intrinsics repo)—I’m guessing this is a macOS-specific bug.