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enable cgo for nvidia code #214
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petderek
approved these changes
Nov 15, 2018
| @@ -37,14 +37,14 @@ mkdir -p "${SRCPATH}" | |||
| ln -s "${TOPWD}/ecs-init" "${SRCPATH}" | |||
| cd "${SRCPATH}/ecs-init" | |||
| if [[ "$1" == "dev" ]]; then | |||
| go build -tags 'development' -ldflags "${VERSION_FLAG} ${GIT_HASH_FLAG} ${GIT_DIRTY_FLAG}" \ | |||
| CGO_ENABLED=1 CGO_LDFLAGS_ALLOW='-Wl,--unresolved-symbols=ignore-in-object-files' go build -tags 'development' -ldflags "${VERSION_FLAG} ${GIT_HASH_FLAG} ${GIT_DIRTY_FLAG}" \ | |||
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nit: maybe put the flags into another variable since we repeat later
jahkeup
reviewed
Nov 21, 2018
| @@ -37,14 +37,14 @@ mkdir -p "${SRCPATH}" | |||
| ln -s "${TOPWD}/ecs-init" "${SRCPATH}" | |||
| cd "${SRCPATH}/ecs-init" | |||
| if [[ "$1" == "dev" ]]; then | |||
| go build -tags 'development' -ldflags "${VERSION_FLAG} ${GIT_HASH_FLAG} ${GIT_DIRTY_FLAG}" \ | |||
| CGO_ENABLED=1 CGO_LDFLAGS_ALLOW='-Wl,--unresolved-symbols=ignore-in-object-files' go build -tags 'development' -ldflags "${VERSION_FLAG} ${GIT_HASH_FLAG} ${GIT_DIRTY_FLAG}" \ | |||
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I couldn't find anything to clarify the --unresolved-symbols=ignore-in-object-files portion of the flag, can you give some background on why these linker options are required for building with CGO specifically for enabling nvidia code?
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vendor package for nvml APIs uses the cgo ldflags here -
Looks like only certain ldflags are whitelisted by default (golang/go#23749) and hence the build error as mentioned in the summary of this PR.
jahkeup
approved these changes
Nov 21, 2018
| @@ -37,14 +37,14 @@ mkdir -p "${SRCPATH}" | |||
| ln -s "${TOPWD}/ecs-init" "${SRCPATH}" | |||
| cd "${SRCPATH}/ecs-init" | |||
| if [[ "$1" == "dev" ]]; then | |||
| go build -tags 'development' -ldflags "${VERSION_FLAG} ${GIT_HASH_FLAG} ${GIT_DIRTY_FLAG}" \ | |||
| CGO_ENABLED=1 CGO_LDFLAGS_ALLOW='-Wl,--unresolved-symbols=ignore-in-object-files' go build -tags 'development' -ldflags "${VERSION_FLAG} ${GIT_HASH_FLAG} ${GIT_DIRTY_FLAG}" \ | |||
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Summary
address build error
go build github.com/aws/amazon-ecs-init/ecs-init/vendor/github.com/NVIDIA/gpu-monitoring-tools/bindings/go/nvml: invalid flag in #cgo LDFLAGS: -Wl,--unresolved-symbols=ignore-in-object-filesImplementation details
Testing
New tests cover the changes:
Description for the changelog
Licensing
This contribution is under the terms of the Apache 2.0 License: yes