cmd/ld: Failure to link cgo program on darwin / Mac OS X 10.6

[gopherbot]

by jobi@litl.com:

I'm trying to compile a program that uses cgo on Mac OS X 10.6. I've tried both the
internal and host linkers, without much luck:

$ go version
go version go1.3.1 darwin/amd64

$ go build
github.com/mattn/go-sqlite3(__DATA/__data): unexpected reloc for dynamic symbol close
github.com/mattn/go-sqlite3(__DATA/__data): unexpected reloc for dynamic symbol access
github.com/mattn/go-sqlite3(__DATA/__data): unexpected reloc for dynamic symbol getcwd
(...)

$ go build -ldflags -linkmode=external
ld: unknown option: -no_pie
collect2: ld returned 1 exit status
/Users/jobi/go-sdk/pkg/tool/darwin_amd64/6l: running gcc failed: unsuccessful exit
status 0x100

[gopherbot]

Comment 1 by jobi@litl.com:

I recompiled go to avoid passing -no_pie, but it then fails in a new way:
$ go build -ldflags -linkmode=external
ld: in /var/folders/iw/iwdRbYdtH1etu4cSq1ucFk+++TI/-Tmp-//go-link-u19OHO/go.o, in
section __TEXT,__text reloc 0: local relocation for address 0x000020CB in section __text
does not target section __rodata
collect2: ld returned 1 exit status
/Users/jobi/go/pkg/tool/darwin_amd64/6l: running gcc failed: unsuccessful exit status
0x100

[ianlancetaylor]

Comment 2:

From some web searches it looks like the -no_pie option was added to the Darwin linker
in Max OS X 10.7.  That explains why you are seeing that error when doing an external
link.
Since your program uses cgo, I don't know why you are getting the external linker by
default.
The error when using the internal linker is issue #8211.
Omitting the -no_pie option was a good idea, but it looks like the 10.6 linker really
insists on seeing PIE, and we don't generate it.

Labels changed: added repo-main, release-none, os-macosx.

[gopherbot]

Comment 3 by jobi@litl.com:

If I compile the program on OS X 10.7, do you expect it to run on 10.6?

[rsc]

Per #9511, we will not be making any further bug fixes specific to 10.6.