* Quoted, absolute -I paths break out-of-tree Makefiles [regression]
@ 2017-02-05 18:24 Herwig Hochleitner
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From: Herwig Hochleitner @ 2017-02-05 18:24 UTC (permalink / raw)
To: linux-kbuild; +Cc: fche, volth
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Systemtap on NixOS generates
[Makefiles](https://hastebin.com/nejijihege.mk#L124) adding
-I"/absolute/path" to EXTRA_CPATH.
This works fine, when used with an in-tree kernel build. In NixOS we
save space on the kernel-dev package, by making [modules_prepare in a
O=oot build and delivering
oot](https://github.com/NixOS/nixpkgs/blob/bb8ded9a78b61f2a23b2e4a0e516533ae0c0d1d4/pkgs/os-specific/linux/kernel/manual-config.nix#L151)
Up to at least 4.4, that -I"/quoted/absolute/stap-include" works with
O=oot. Starting with at most 4.9.2, that flag gets mangled into
-I/absolute/oot"/quoted/absolute/stap-include".
Attached is a script, that demonstrates this issue, could somebody
with a repository clone bisect this for me, please?
best regards
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2017-02-05 18:24 Quoted, absolute -I paths break out-of-tree Makefiles [regression] Herwig Hochleitner
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