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H A DSConscriptdiff 12389:cff04fd4bbc9 Wed Dec 13 09:29:00 EST 2017 Andreas Sandberg <andreas.sandberg@arm.com> scons, tests: Fix occasional linking error

There are some cases where scons incorrectly adds the same object
multiple times to the linker command line. This seems to be caused by
the test's source list being updated in place when determining test
framework dependencies. Fix this by explicitly copying the source list
and manipulate the copy.

Without this change, the following command fails:
scons ./build/ARM/unittests.opt/base/pixeltest.xml

Whereas this command succeeds:
scons ./build/ARM/base/pixeltest.opt

Change-Id: I642efdf9d62a5478e49ba51efe1a3a5ba453e21f
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jack Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/6641
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Gabe Black <gabeblack@google.com>

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