[Buildroot] [Bug 7562] musl buildroot-toolchain and BR2_MIPS_SOFT_FLOAT break

[bugzilla at busybox.net <bugzilla@busybox.net>]

https://bugs.busybox.net/show_bug.cgi?id=7562

Peter Korsgaard <jacmet@uclibc.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from Peter Korsgaard <jacmet@uclibc.org> ---
Fixed in git by:

commit 348d5edd91abec1fc4cc27965220d54e58217dc3
Author: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date:   Tue Mar 8 22:20:55 2016 +0100

    gcc: fix dynamic linker path for mips soft-float

    This commit updates the gcc musl patches for gcc 4.7, 4.8 and 4.9 so
    that the path to the dynamic linker encoded as "program interpreter"
    in the generated binaries actually matches the symbolic link installed
    by musl when building for mips soft-float.

    Indeed, musl installs a symlink called ld-musl-mipsel-sf.so.1, but gcc
    currently generates binaries that use /lib/ld-musl-mips.so as program
    interpreter.

    The fix is simply the one from
    https://bitbucket.org/GregorR/musl-cross/commits/825219202365, i.e
    adjust MUSL_DYNAMIC_LINKER in our musl gcc patches.

    Thanks to these patches:

    $ ./host/usr/bin/mipsel-linux-readelf -a ./target/bin/busybox
    [...]
          [Requesting program interpreter: /lib/ld-musl-mipsel-sf.so.1]
    [...]

    gcc 5.x doesn't need any fix because the musl patches already use the
    right value.

    Fixes bug #7562.

    Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
    Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

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