(First-time post; please let me know if this is the wrong place to ask or
if I missed a previous post or issue when I searched. I'm willing to file
in https://github.com/golang/go/issues/new if that's the agreed way to keep
track, or to wait until I understand the linker infrastructure on ppc64le
and can propose a fix.)
I have the impression that Go mostly achieves reproducible builds, but that
ppc64le is less widely used and so no one has reported the issue yet.
### What version of Go are you using (`go version`)?
go1.11.2
### Does this issue reproduce with the latest release?
yes
### What operating system and processor architecture are you using (`go
env`)?
Ubuntu ppc64le
### What did you do?
Compared go binary built from source bootstrapping from Ubuntu packed
go1.11.2 and cross-compiled go from amd64.
### What did you expect to see?
byte-for-byte identical
### What did you see instead?
<pre>
├── readelf --wide --symbols {}
│ @@ -14983,15 +14983,15 @@
│ 14903: 0000000010926730 8 OBJECT LOCAL DEFAULT 28
cgo_context_function
│ 14904: 0000000000000000 0 FILE LOCAL DEFAULT ABS
gcc_linux_ppc64x.c
│ 14905: 0000000010414b50 128 FUNC LOCAL DEFAULT [<localentry>: 8]
13 threadentry
│ 14906: 0000000010926738 8 OBJECT LOCAL DEFAULT 28 setg_gcc
│ 14907: 0000000000000000 0 FILE LOCAL DEFAULT ABS gcc_setenv.c
│ 14908: 0000000000000000 0 FILE LOCAL DEFAULT ABS
gcc_traceback.c
│ 14909: 0000000000000000 0 FILE LOCAL DEFAULT ABS gcc_util.c
│ - 14910: 0000000000000000 0 FILE LOCAL DEFAULT ABS
/tmp/go-link-201992677/000014.o
│ + 14910: 0000000000000000 0 FILE LOCAL DEFAULT ABS
/tmp/go-link-967081304/000014.o
│ 14911: 0000000010414ff0 0 NOTYPE LOCAL DEFAULT 13 saveregs
│ 14912: 0000000010415084 0 NOTYPE LOCAL DEFAULT 13 restoreregs
│ 14913: 0000000000000000 0 FILE LOCAL DEFAULT ABS crtstuff.c
│ 14914: 00000000108a749c 0 OBJECT LOCAL DEFAULT 19 __FRAME_END__
│ 14915: 0000000000000000 0 FILE LOCAL DEFAULT ABS
│ 14916: 00000000100016e0 0 NOTYPE LOCAL DEFAULT 13
00000018.plt_call.pthread_create@@GLIBC_2.17
│ 14917: 0000000010001500 0 NOTYPE LOCAL DEFAULT 13
00000018.plt_call.fwrite@@GLIBC_2.17
</pre>
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