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build: add -O3 optimization to CGO flags (#13877)
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Browse Source 
CGO_CFLAGS and CGO_CXXFLAGS were being set without optimization flags,
which overrides Go's default -O2 and results in unoptimized C++ code.

This caused significant performance degradation in release builds
compared to local `go build` which uses the default optimization.

- build_darwin.sh: add -O3 to CGO_CFLAGS and CGO_CXXFLAGS exports
- Dockerfile: preserve CGO_CFLAGS/CGO_CXXFLAGS from build args instead
  of overwriting them
- app/README.md: update documentation to include -O3
This commit is contained in:
Jeffrey Morgan
2026-01-24 10:55:38 -08:00
committed by GitHub
parent 5267d31d56
commit f3b476c592
4 changed files with 14 additions and 6 deletions
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Dockerfile
+3 -1
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@@ -169,8 +169,10 @@ COPY . .
RUN git clone --depth 1 --branch "$(cat MLX_VERSION)" https://github.com/ml-explore/mlx-c.git build/_deps/mlx-c-src
ARG GOFLAGS="'-ldflags=-w -s'"
ENV CGO_ENABLED=1
ENV CGO_CFLAGS="-I/go/src/github.com/ollama/ollama/build/_deps/mlx-c-src"
ARG CGO_CFLAGS
ARG CGO_CXXFLAGS
ENV CGO_CFLAGS="${CGO_CFLAGS} -I/go/src/github.com/ollama/ollama/build/_deps/mlx-c-src"
ENV CGO_CXXFLAGS="${CGO_CXXFLAGS}"
RUN --mount=type=cache,target=/root/.cache/go-build \
go build -tags mlx -trimpath -buildmode=pie -o /bin/ollama .