[Bug lto/63603] [4.9/5 Regression] Linking with -fno-lto still invokes LTO

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63603

--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #4)
> That means that
> /* We pass any -flto flags on to the linker, which is expected
>    to understand them.  In practice, this means it had better be collect2.  

> #define LINK_COMMAND_SPEC "\

>    "%{flto|flto=*:%<fcompare-debug*} \
>     %{flto} %{flto=*} %l " LINK_PIE_SPEC \
> doesn't pass on -fno-lto as expected.  Does adding %{fno-lto} after
> %{flto} work?

That seems to do the trick: I no longer see lto1 with -fno-lto (independent of
-f(no-)use-linker-plugin) - and, unsurprisingly, without -fno-lto it still
invokes lto1.