Remove futility linker script.

The futility.lds linker script was used to generate a table with
all the symbols in a specific section called .futil_cmds listed
in order under the symbol "futil_cmds". This allows the source files
to define a command and let the linker figure out the list of
compiled commands. Nevertheless, passing this linker script
makes the linker leave a gap of about 2MiB in the output ELF file.

Instead of mess up with linker scripts just to generate a table of
commands, this patch generates such table in the Makefile looking
at the included sources and compiling that table. The result is a
futility binary of about 88 KiB instead of the 2.1 MiB required
originally.

This patch also adds sys-boot/chromeos-u-boot to the list of ebuilds
tested by emerge_test.sh.

BUG=chromium:408926
BRANCH=None
TEST=BOARD=link ./emerge_test.sh
TEST=BOARD=daisy_spring ./emerge_test.sh
TEST=`readelf -S futility` shows no gap.
TEST=/usr/bin/futility shows no difference in the help output.

Change-Id: I9c0febc76140b404d48aa13e7f948e8ea77a41b5
Reviewed-on: https://chromium-review.googlesource.com/215496
Tested-by: Alex Deymo <deymo@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/emerge_test.sh b/emerge_test.sh
index cbe51444..5861aa25 100755
--- a/emerge_test.sh
+++ b/emerge_test.sh
@@ -11,6 +11,7 @@
 # Required ebuilds:
 TEST_EBUILDS="
   sys-boot/chromeos-bootimage
+  sys-boot/chromeos-u-boot
   sys-boot/coreboot
   sys-boot/depthcharge
   chromeos-base/chromeos-cryptohome