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feat: FFI_PORTABLE to build a maximally portable binary #480

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merged 1 commit into from
Sep 11, 2024
Merged

feat: FFI_PORTABLE to build a maximally portable binary #480

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10 changes: 9 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,14 @@ rm .install-filcrypto \
; FFI_BUILD_FROM_SOURCE=1 FFI_USE_BLST_PORTABLE=1 make
```

Alternatively, to build a maximally portable binary without optimizing for the current CPU, set `FFI_PORTABLE=1`:

```shell
rm .install-filcrypto \
; make clean \
; FFI_BUILD_FROM_SOURCE=1 FFI_PORTABLE=1 make
```

By default, a 'gpu' option is used in the proofs library. This feature is also used in FFI unless explicitly disabled. To disable building with the 'gpu' dependency, set `FFI_USE_GPU=0`:

```shell
Expand All @@ -44,7 +52,7 @@ rm .install-filcrypto \

#### GPU support

CUDA for GPU support is now enabled by default in the proofs library. This feature can optionally be replaced by OpenCL by using `FFI_USE_OPENCL=1` set in the environment when building from source. Alternatively, if the CUDA toolkit (such as `nvcc`) cannot be located in the environment, OpenCL support is used instead. To disable GPU support entirely, set `FFI_USE_GPU=0` in the environment when building from source.
CUDA for GPU support is now enabled by default in the proofs library. This feature can optionally be replaced by OpenCL by using `FFI_USE_OPENCL=1` set in the environment when building from source. Using `FFI_PORTABLE=1` will also enable OpenCL support. Alternatively, if the CUDA toolkit (such as `nvcc`) cannot be located in the environment, OpenCL support is used instead. To disable GPU support entirely, set `FFI_USE_GPU=0` in the environment when building from source.

There is experimental support for faster C2 named "SupraSeal". To enable it, set `FFI_USE_CUDA_SUPRASEAL=1`. It's specific to CUDA and won't work with OpenCL.

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9 changes: 7 additions & 2 deletions install-filcrypto
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Expand Up @@ -190,7 +190,7 @@ build_from_source() {
if [ "${FFI_USE_GPU}" == "0" ]; then
gpu_flags=""
# Check if OpenCL support is specified or we're building on Darwin.
elif [ "${FFI_USE_OPENCL}" == "1" ] || [ "$(uname -s)" = "Darwin" ]; then
elif [ "${FFI_USE_OPENCL}" == "1" ] || [ "${FFI_PORTABLE}" == "1" ] || [ "$(uname -s)" = "Darwin" ]; then
gpu_flags=",opencl"
else
# If GPUs are enabled and SupraSeal is not, default to CUDA support
Expand Down Expand Up @@ -226,7 +226,7 @@ build_from_source() {

additional_flags=""
# Add feature specific rust flags as needed here.
if [ "${FFI_USE_BLST_PORTABLE}" == "1" ]; then
if [ "${FFI_USE_BLST_PORTABLE}" == "1" ] || [ "${FFI_PORTABLE}" == "1" ]; then
additional_flags="${additional_flags} --no-default-features --features ${use_multicore_sdr},blst-portable${gpu_flags}${use_fixed_rows_to_discard}"
else
additional_flags="${additional_flags} --no-default-features --features ${use_multicore_sdr}${gpu_flags}${use_fixed_rows_to_discard}"
Expand All @@ -243,6 +243,11 @@ build_from_source() {
}

get_release_flags() {
if [ "${FFI_PORTABLE}" == "1" ]; then
echo ""
return
fi

local __features=""

# determine where to look for CPU features
Expand Down
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