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release/19.x: [LLD] [MinGW] Recognize the -rpath option (#102886) #104843

Merged

tru merged 1 commit into llvm:release/19.x from llvmbot:issue102886

Aug 20, 2024

Commits on Aug 20, 2024

[LLD] [MinGW] Recognize the -rpath option (llvm#102886 )

GNU ld silently accepts the -rpath option for Windows targets, as a
no-op.

This has lead to some build systems (and users) passing this option
while building for Windows/MinGW, even if Windows doesn't have any
concept like rpath.

Older versions of Conan did include -rpath in the pkg-config files it
generated, see e.g.

https://github.com/conan-io/conan/blob/17c58f0c61931f9de218ac571cd97a8e0befa68e/conans/client/generators/pkg_config.py#L104-L114
and
https://github.com/conan-io/conan/blob/17c58f0c61931f9de218ac571cd97a8e0befa68e/conans/client/build/compiler_flags.py#L26-L34
- and see mstorsjo/llvm-mingw#300 for user
reports about this issue.

Recognize the option in LLD for MinGW targets, to improve drop-in
compatibility compared to GNU ld, but produce a warning to alert users
that the option really has no effect for these targets.

(cherry picked from commit 69f76c7)

mstorsjo authored and tru committed Aug 20, 2024