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build: add -O3 optimization to CGO flags (#13877)

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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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4
Dockerfile
View File

@@ -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 .

6
app/README.md
View File

@@ -75,9 +75,9 @@ The `-dev` flag enables:
CI builds with Xcode 14.1 for OS compatibility prior to v13. If you want to manually build v11+ support, you can download the older Xcode [here](https://developer.apple.com/services-account/download?path=/Developer_Tools/Xcode_14.1/Xcode_14.1.xip), extract, then `mv ./Xcode.app /Applications/Xcode_14.1.0.app` then activate with:
```
export CGO_CFLAGS=-mmacosx-version-min=12.0
export CGO_CXXFLAGS=-mmacosx-version-min=12.0
export CGO_LDFLAGS=-mmacosx-version-min=12.0
export CGO_CFLAGS="-O3 -mmacosx-version-min=12.0"
export CGO_CXXFLAGS="-O3 -mmacosx-version-min=12.0"
export CGO_LDFLAGS="-mmacosx-version-min=12.0"
export SDKROOT=/Applications/Xcode_14.1.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
export DEVELOPER_DIR=/Applications/Xcode_14.1.0.app/Contents/Developer
```

4
scripts/build_darwin.sh
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@@ -14,8 +14,8 @@
VOL_NAME=${VOL_NAME:-"Ollama"}
export VERSION=${VERSION:-$(git describe --tags --first-parent --abbrev=7 --long --dirty --always | sed -e "s/^v//g")}
export GOFLAGS="'-ldflags=-w -s \"-X=github.com/ollama/ollama/version.Version=${VERSION#v}\" \"-X=github.com/ollama/ollama/server.mode=release\"'"
export CGO_CFLAGS="-mmacosx-version-min=14.0"
export CGO_CXXFLAGS="-mmacosx-version-min=14.0"
export CGO_CFLAGS="-O3 -mmacosx-version-min=14.0"
export CGO_CXXFLAGS="-O3 -mmacosx-version-min=14.0"
export CGO_LDFLAGS="-mmacosx-version-min=14.0"
set -e

6
scripts/build_windows.ps1
View File

@@ -56,6 +56,12 @@ function checkEnv {
$script:DIST_DIR="${script:SRC_DIR}\dist\windows-${script:TARGET_ARCH}"
$env:CGO_ENABLED="1"
if (-not $env:CGO_CFLAGS) {
$env:CGO_CFLAGS = "-O3"
}
if (-not $env:CGO_CXXFLAGS) {
$env:CGO_CXXFLAGS = "-O3"
}
Write-Output "Checking version"
if (!$env:VERSION) {
$data=(git describe --tags --first-parent --abbrev=7 --long --dirty --always)