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Date: Wed, 29 Jan 2020 16:46:41 -0500
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: Static linking is broken after creation of DT_TEXTREL
segment
On Thu, Jan 30, 2020 at 12:35:52AM +0300, Андрей Аладьев wrote:
> "readelf -d main | grep TEXTREL" returns the same text on both musl and
> glibc containers:
>
> 0x0000000000000016 (TEXTREL) 0x0
> 0x000000000000001e (FLAGS) TEXTREL
>
> "gcc -no-pie" is another workaround for musl container like Rich said. But
> I think that 'set(CMAKE_EXE_LINKER_FLAGS "-static")' will be best cross
> platform solution. As I know "-static" implies "no-pie".
-static normally does not imply -no-pie with musl target. musl was the
first to introduce static pie, and it was not treated as something
special/weird you have to request, just what you get with -static +
-pie or -static and default-pie toolchain.
When GCC upstreamed static pie with glibc support, they made it so
-static overrides -pie and so you need the new -static-pie to get
static pie. musl patches for gcc revert this change since it's a
regression to the original behavior, treats static-pie a second-class,
and does not work with environments where pie is mandatory (like nommu
targets) where default-pie *must* be honored.
Rich
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