How to build full go program binary with gccgo?

Question

I have noticed that when using go build the binary result can be in excess of 2MB; but using gccgo the binary is less than 35k.

The other issue that I noticed when using gccgo is that the produced binary isn't runnable on another linux box (missing libgo.so I believe) but the go build binary runs just fine (so I imagine its because the binary includes all that is necessary to run?); is there a way to do this with gccgo?

score 8 · Accepted Answer · edited Mar 31 '13 at 21:18

8

You have to use the -static flag:

Use the -static option to do a fully static link (the default for the gc compiler).

http://golang.org/doc/install/gccgo

edited Mar 31 '13 at 21:18

fuz

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answered Mar 26 '13 at 17:34

mna

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score 5 · Answer 2 · answered Mar 27 '13 at 15:30

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You can link libgo statically, while still linking the system libraries dynamically, by using the -static-libgo option. (This applies to gccgo only).

answered Mar 27 '13 at 15:30

iant

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score 0 · Answer 3 · edited Nov 14 '17 at 16:54

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With go 1.8 or above, if go is built with CGO_ENABLED=1 (default to 1), a native compilation links dynamically. Check this variable by running go env CGO_ENABLED. You can switch to link statically by set the environment variable CGO_ENABLED to 0 when running go build.

CGO_ENABLED=0 go build

BTW, cross compiling uses static linkage automatically.

edited Nov 14 '17 at 16:54

Adil B

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answered Nov 14 '17 at 15:16

samsong8610

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How to build full go program binary with gccgo?

3 Answers3