From c7248a0c9408552e7748a5cbdbee63c5535c8c83 Mon Sep 17 00:00:00 2001 From: "Paul E. Murphy" Date: Tue, 27 Apr 2021 15:05:51 -0500 Subject: [release-branch.go1.16] cmd/link: disable plugin support if cgo is disabled Functional plugin support requires cgo to be enabled. Disable it if the environment has disabled cgo. This prevents unexpected linker failures when linking large binaries with cgo disabled which use the plugin package. Fixes #45832 Change-Id: Ib71f0e089f7373b7b3e3cd53da3612291e7bc473 Reviewed-on: https://go-review.googlesource.com/c/go/+/314449 Run-TryBot: Paul Murphy Reviewed-by: Cherry Zhang TryBot-Result: Go Bot Trust: Lynn Boger (cherry picked from commit 983dea90c169930e35721232afe39fd4e3fbe4a6) Reviewed-on: https://go-review.googlesource.com/c/go/+/316329 Reviewed-by: Cherry Mui Trust: Dmitri Shuralyov --- src/cmd/link/internal/ld/lib.go | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/cmd/link/internal/ld/lib.go b/src/cmd/link/internal/ld/lib.go index 17d5040827..18db567041 100644 --- a/src/cmd/link/internal/ld/lib.go +++ b/src/cmd/link/internal/ld/lib.go @@ -533,7 +533,10 @@ func (ctxt *Link) loadlib() { // up symbol by name may not get expected result. iscgo = ctxt.LibraryByPkg["runtime/cgo"] != nil - ctxt.canUsePlugins = ctxt.LibraryByPkg["plugin"] != nil + + // Plugins a require cgo support to function. Similarly, plugins may require additional + // internal linker support on some platforms which may not be implemented. + ctxt.canUsePlugins = ctxt.LibraryByPkg["plugin"] != nil && iscgo // We now have enough information to determine the link mode. determineLinkMode(ctxt) -- cgit v1.2.3-54-g00ecf