9a9780a20d
To the extent that invoking the compiler and invoking the linker have different dependency requirements, representing both steps by a single action node leads to confusion. If we move to having separate .a and .x (import metadata) files in the standard builds, then the .a is a link dependency but not a compile dependency, and vice versa for .x. Today, in shared library builds, the .a is a compile dependency and a link dependency, while the .so is only a link dependency. Also in this CL: change the gccgo link step to extract _cgo_flags into root.Objdir, which is private to the link step, instead of into b.WorkDir, which is shared by all the link steps that could possibly be running in parallel. And attempt to handle the -n and -x flags when loading _cgo_flags, instead of dying attempting to read an archive that wasn't written. Also in this CL: create a.Objdir before running a.Func, to avoid duplicating the Mkdir(a.Objdir) in every a.Func. A future CL will update the link action's Deps to be accurate. (Right now the link steps search out the true Deps by walking the entire action graph.) Change-Id: I15128ce2bd064887f98abc3a4cf204241f518631 Reviewed-on: https://go-review.googlesource.com/69830 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Crawshaw <crawshaw@golang.org> |
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