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add aarch64 Linux cross-compilation support #528

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6 changes: 6 additions & 0 deletions .bazelrc
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,12 @@ common:linux_aarch64_score_gcc_12_2_0_posix --platforms=@score_bazel_platforms//
common:linux_aarch64_score_gcc_12_2_0_posix --extra_toolchains=@score_gcc_aarch64_toolchain//:aarch64-linux
common:linux_aarch64_score_gcc_12_2_0_posix --extra_toolchains=@score_toolchains_rust//toolchains/ferrocene:ferrocene_aarch64_unknown_linux_gnu

common:linux_aarch64 --extra_toolchains=@gcc_toolchain_aarch64//:cc_toolchain
common:linux_aarch64 --extra_toolchains=@score_gcc_aarch64_toolchain//:aarch64-linux

@castler castler Jun 19, 2026

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Why do we add this toolchain here also?

common:linux_aarch64 --extra_toolchains=@ferrocene_aarch64_unknown_linux_gnu_llvm//:rust_ferrocene_toolchain
common:linux_aarch64 --platforms=@score_bazel_platforms//:aarch64-linux-gcc_12.2.0-posix

@castler castler Jun 19, 2026

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This seems wrong, as the first toolchain is a gcc15?

build:linux_aarch64 --copt=-mno-outline-atomics

@castler castler Jun 19, 2026

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We should have copt only in the MODULE file


# In order to build for QNX, you need:
# * An account on qnx.com
# * An assigned QNX 8 license to your account
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37 changes: 36 additions & 1 deletion MODULE.bazel
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Expand Up @@ -78,7 +78,20 @@ gcc_toolchains.toolchain(
gcc_version = "15.2.0",
target_arch = "x86_64",
)
use_repo(gcc_toolchains, "gcc_toolchain_x86_64")
gcc_toolchains.toolchain(
name = "gcc_toolchain_aarch64",
extra_cxxflags = [
"-mno-outline-atomics",
],
extra_ldflags = [
"-lstdc++",
"-lrt",
"-latomic",
],
gcc_version = "15.2.0",
target_arch = "aarch64",
)
use_repo(gcc_toolchains, "gcc_toolchain_aarch64", "gcc_toolchain_x86_64")

bazel_dep(name = "score_bazel_cpp_toolchains", version = "0.5.1", dev_dependency = True)

Expand Down Expand Up @@ -203,8 +216,30 @@ gcc_ferrocene.toolchain(
target_triple = "x86_64-unknown-linux-gnu",
url = "https://github.com/eclipse-score/ferrocene_toolchain_builder/releases/download/1.0.1/ferrocene-779fbed05ae9e9fe2a04137929d99cc9b3d516fd-x86_64-unknown-linux-gnu.tar.gz",
)
gcc_ferrocene.toolchain(
name = "ferrocene_aarch64_unknown_linux_gnu_llvm",
exec_triple = "x86_64-unknown-linux-gnu",
extra_rustc_flags = [
"-Crelocation-model=static",
"-Clink-arg=-Wl,--no-as-needed",
"-Clink-arg=-latomic",
"-Clink-arg=-Wl,--as-needed",
"-Clink-arg=-no-pie",
"-Clink-arg=-lstdc++",
"-Clink-arg=-lm",
"-Clink-arg=-lc",
],
sha256 = "b1f1eb1146bf595fe1f4a65d5793b7039b37d2cb6d395d1c3100fa7d0377b6c9",
target_compatible_with = [
"@platforms//cpu:aarch64",
"@platforms//os:linux",
],
target_triple = "aarch64-unknown-linux-gnu",
url = "https://github.com/eclipse-score/ferrocene_toolchain_builder/releases/download/1.0.1/ferrocene-779fbed05ae9e9fe2a04137929d99cc9b3d516fd-aarch64-unknown-linux-gnu.tar.gz",
)
use_repo(
gcc_ferrocene,
"ferrocene_aarch64_unknown_linux_gnu_llvm",
"ferrocene_x86_64_unknown_linux_gnu_llvm",
)

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