Hi,
This commit makes the Blackfin platform use the generic linker version
information, rather than a completely duplicated file, specific for the
Blackfin architecture.
This is made possible using the newly introduced skip_underscore
variable of the mkmap-symver script.
This also allows to get a correct linker version file, with symbol names
matching the ones found in libgcc. Thanks to this, the necessary symbols
are marked "GLOBAL" instead of "LOCAL", which makes them visible at link
time, and solves a large number of "undefined reference"
issues. Indeed, the Blackfin specific linker version script had an extra
underscore in front of all symbols, which meant none of them matched the
symbols in libgcc, and therefore all libgcc symbols were marked as
"LOCAL", making them invisible for linking.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Waldemar Brodkorb <wbx@openadk.org>
2016-11-06 Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
PR gcc/74748
* libgcc/config/bfin/libgcc-glibc.ver, libgcc/config/bfin/t-linux:
use generic linker version information on Blackfin.