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add riscv64 to fio/iperf3 binary build workflows (#97)

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Mason Rowe
2026-10-31 00:56:40 -04:00
parent 0e9a967115
commit 96f102f8d0
4 changed files with 61 additions and 13 deletions
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16
bin/README.md
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@@ -7,8 +7,8 @@ repository** - they are built automatically by GitHub Actions workflows
[build-iperf3.yml](../.github/workflows/build-iperf3.yml)) on GitHub-hosted
runners and published as release assets on this repository:
* `fio-*` releases (e.g. `fio-3.42`) - contain `fio_x64`, `fio_x86`, `fio_aarch64`, `fio_arm`
* `iperf3-*` releases (e.g. `iperf3-3.21`) - contain `iperf3_x64`, `iperf3_x86`, `iperf3_aarch64`, `iperf3_arm`
* `fio-*` releases (e.g. `fio-3.42`) - contain `fio_x64`, `fio_x86`, `fio_aarch64`, `fio_arm`, `fio_riscv64`
* `iperf3-*` releases (e.g. `iperf3-3.21`) - contain `iperf3_x64`, `iperf3_x86`, `iperf3_aarch64`, `iperf3_arm`, `iperf3_riscv64`
* `toolchains` release - musl cross-compilation toolchains mirrored from
[musl.cc](https://musl.cc/) (which blocks GitHub Actions IP ranges); see the
NOTICE.txt asset for licensing/source info
@@ -33,7 +33,7 @@ issue if the binaries are out of date and lacking any security-related and/or
performance updates - the daily scheduled workflows should pick up new upstream
releases automatically.
Note: ARM compatibility is considered experimental.
Note: ARM and RISC-V compatibility is considered experimental.
### Compile Notes (manual builds)
@@ -57,6 +57,10 @@ Compilation of 32-bit and ARM-compatible binaries requires additional
environment variables to identify the proper musl toolchain and architecture to
target for cross-compilation.
The musl.cc riscv64 toolchain is default-PIE, so the scripts pass `-no-pie` to
produce classic static executables (a static-PIE fio fails to link, and a
static-PIE iperf3 links but segfaults at runtime).
**Compiling 32-bit x86 binaries**:
```sh
@@ -74,3 +78,9 @@ docker run -t -i --rm -v `pwd`:/io --env ARCH=aarch64 --env CROSS=aarch64-linux-
```sh
docker run -t -i --rm -v `pwd`:/io --env ARCH=arm --env CROSS=arm-linux-musleabihf --env HOST=arm-linux-gnueabihf phusion/holy-build-box-64:latest bash /io/cross-compile.sh
```
**Compiling RISC-V 64-bit binaries**:
```sh
docker run -t -i --rm -v `pwd`:/io --env ARCH=riscv64 --env CROSS=riscv64-linux-musl --env HOST=riscv64-linux-gnu phusion/holy-build-box-64:latest bash /io/cross-compile.sh
```

9
bin/cross-compile.sh
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@@ -39,8 +39,9 @@ cd fio-fio-*
# conflicts under musl; sys/prctl.h alone is sufficient
sed -i '/#include <linux\/prctl.h>/d' backend.c
CC=/root/${CROSS}-cross/bin/${CROSS}-gcc ./configure --disable-native --build-static
# link against libatomic for 32-bit/ARM targets that lack native 64-bit atomics
make EXTLIBS+=' -latomic'
# link against libatomic for 32-bit/ARM targets that lack native 64-bit atomics; -no-pie forces a
# classic static executable on default-PIE toolchains (riscv64), where a static-PIE fails to link
make EXTLIBS+=' -latomic -no-pie'
# verify no external shared library links
libcheck fio
@@ -52,7 +53,9 @@ cd ~
curl -L https://github.com/esnet/iperf/archive/3.21.tar.gz -o "iperf.tar.gz"
tar xf iperf.tar.gz
cd iperf-*
CC=/root/${CROSS}-cross/bin/${CROSS}-gcc ./configure --disable-shared --disable-profiling --build x86_64-pc-linux-gnu --host "${HOST}" --with-openssl=no --enable-static-bin
# -no-pie must be set via LDFLAGS at configure time (passing it to make overrides automake's LDFLAGS and
# drops --static); on default-PIE toolchains (riscv64) a static-PIE iperf3 links but segfaults at runtime
LDFLAGS="${LDFLAGS} -no-pie" CC=/root/${CROSS}-cross/bin/${CROSS}-gcc ./configure --disable-shared --disable-profiling --build x86_64-pc-linux-gnu --host "${HOST}" --with-openssl=no --enable-static-bin
# remove libatomic.la so libtool links the static libatomic.a rather than
# attempting to link libatomic.so into the static binary (breaks arm32 builds)
rm -f "/root/${CROSS}-cross/${CROSS}/lib/libatomic.la"