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Sebastiaan van Stijn
8ff6f243a2
Pass -w to the Go linker to reduce binary size while retaining the
symbol table for tools that inspect Go binaries.
For a linux/arm64 build, this reduces the CLI binary from 39,809,791
to 31,310,197 bytes: a saving of 8.5 MB (21.4%).
Place the default before caller-supplied GO_LDFLAGS so builds can
retain DWARF by passing GO_LDFLAGS="-w=0".
Before
ls -l /go/src/github.com/docker/cli/build/docker-linux-arm64
-rwxr-xr-x 1 root root 39809791 Oct 29 17:34 /go/src/github.com/docker/cli/build/docker-linux-arm64
After
ls -l /go/src/github.com/docker/cli/build/docker-linux-arm64
-rwxr-xr-x 1 root root 31310197 Oct 29 17:36 /go/src/github.com/docker/cli/build/docker-linux-arm64
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>