build: fix conditional compilation of sources

Explicitly add all arch/<arch>/* files to respective _SOURCES
variables instead of using @ARCH_DIR@ substitution.

This patch fixes the broken build for ARM, PPC, and MIPS
introduced by [1] and the similar issue reported while
testing [2].

From the Autoconf manual [3]:

  You can't put a configure substitution (e.g., '@FOO@' or
  '$(FOO)' where FOO is defined via AC_SUBST) into a _SOURCES
  variable. The reason for this is a bit hard to explain, but
  suffice to say that it simply won't work.

Here be dragons..

[1] https://lists.linaro.org/pipermail/lng-odp/2017-April/030324.html
[2] https://lists.linaro.org/pipermail/lng-odp/2017-June/031598.html
[3] https://www.gnu.org/software/automake/manual/html_node/Conditional-Sources.html

Signed-off-by: Brian Brooks <brian.brooks@arm.com>
Reviewed-by: Kevin Wang <kevin.wang@arm.com>
Reviewed-by: Yi He <yi.he@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Dmitry Eremin-Solenikov <dmitry.ereminsolenikov@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>

0 files changed, 0 insertions, 0 deletions