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build system: Split linking into multiple steps

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After collecting dependencies for ramstage, add an intermediate step
in which object files are linked per directory. The results are then
linked into the final binary.

This reduces the maximum command line length and might also help with
future use of LTO linking.

Also adapt the lint test for build dir handling, since printall
doesn't provide individual object files for ramstage anymore.

Change-Id: Ie40febd8c1eaf4609944eedeab46d870639e53df
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1911
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Patrick Georgi
2012-11-25 17:10:47 +01:00
parent 79f9010e80
commit f33e395213
2 changed files with 38 additions and 4 deletions
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8
util/lint/lint-stable-002-build-dir-handling
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@ -61,10 +61,10 @@ $MAKE DOTCONFIG=$TMPCONFIG allyesconfig >/dev/null
CURRENTDIR=`pwd -P`
PARENTDIR=`dirname $CURRENTDIR`
compare_output "`run_printall build`" "build/.../static.c build/.../static.c build/.../static.ramstage.o build/.../static.romstage.o"
compare_output "`run_printall ../obj`" "$PARENTDIR/obj/.../static.c $PARENTDIR/obj/.../static.c $PARENTDIR/obj/.../static.ramstage.o $PARENTDIR/obj/.../static.romstage.o"
compare_output "`run_printall /tmp`" "/tmp/.../static.c /tmp/.../static.c /tmp/.../static.ramstage.o /tmp/.../static.romstage.o"
compare_output "`run_printall /../tmp`" "/tmp/.../static.c /tmp/.../static.c /tmp/.../static.ramstage.o /tmp/.../static.romstage.o"
compare_output "`run_printall build`" "build/.../static.c build/.../static.c build/.../static.romstage.o"
compare_output "`run_printall ../obj`" "$PARENTDIR/obj/.../static.c $PARENTDIR/obj/.../static.c $PARENTDIR/obj/.../static.romstage.o"
compare_output "`run_printall /tmp`" "/tmp/.../static.c /tmp/.../static.c /tmp/.../static.romstage.o"
compare_output "`run_printall /../tmp`" "/tmp/.../static.c /tmp/.../static.c /tmp/.../static.romstage.o"
rm -f $TMPCONFIG