[Buildroot] [PATCH 1/5] toolchain-external: fix C++ build issues with the Blackfin toolchain

[Yann E. MORIN <yann.morin.1998@free.fr>]

Thomas, All,

On 2014-11-23 18:56 +0100, Thomas Petazzoni spake thusly:
> On Sun, 23 Nov 2014 18:54:30 +0100, Yann E. MORIN wrote:
> > On 2014-11-23 18:35 +0100, Thomas Petazzoni spake thusly:
> > > The Blackfin toolchain install some libtool .la files, which none of
> > > the other toolchains seem to do,
> > 
> > Well, with my crostool-NG toolchains, I have some, for example:
[--SNIP--]
> What do they contain?

    $ cat ./armv6-rpi-linux-gnueabihf/armv6-rpi-linux-gnueabihf/sysroot/lib/libstdc++.la
    # libstdc++.la - a libtool library file
    # Generated by libtool (GNU libtool 1.3134 2009-11-29) 2.2.7a
    #
    # Please DO NOT delete this file!
    # It is necessary for linking the library.

    # The name that we can dlopen(3).
    dlname='libstdc++.so.6'

    # Names of this library.
    library_names='libstdc++.so.6.0.20 libstdc++.so.6 libstdc++.so'

    # The name of the static archive.
    old_library='libstdc++.a'

    # Linker flags that can not go in dependency_libs.
    inherited_linker_flags=''

    # Libraries that this one depends upon.
    dependency_libs=' -lm'

    # Names of additional weak libraries provided by this library
    weak_library_names=''

    # Version information for libstdc++.
    current=6
    age=0
    revision=20

    # Is this an already installed library?
    installed=yes

    # Should we warn about portability when linking against -modules?
    shouldnotlink=no

    # Files to dlopen/dlpreopen
    dlopen=''
    dlpreopen=''

    # Directory that this library needs to be installed in:
    libdir='/home/ymorin/x-tools/armv6-rpi-linux-gnueabihf/armv6-rpi-linux-gnueabihf/lib'

> At least, with the Blackfin toolchain, for some reason, libtool find it
> smart to append the Buildroot sysroot path with the libdir value found
> in the .la file.

What. Wait, did you say 'libtool' and 'smart' in the same sentence? ;-]

Regards,
Yann E. MORIN.

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