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Makefile: link arch/ last

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The IRQ implementations of ARC, ARM, and Nios II use .gnu.linkonce
sections for declaring entires in the sw_isr_table array. It's
imperative that arch/built-in.o be linked after everything else
as we want custom interrupt handlers to take precedence over the
default spurious interrupt handlers.

Currently, any interrupt handlers defined in ext/ or usb/ will not
be installed properly on the above mentioned arches.

Change-Id: Ib3fb21ff1ef114678906f130c268c266535954f1
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2016-07-26 14:45:14 -07:00
commit d9a84c5c77
1 changed files with 6 additions and 2 deletions
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8
Makefile
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@ -516,8 +516,9 @@ PHONY += scripts
scripts: scripts_basic include/config/auto.conf include/config/tristate.conf
$(Q)$(MAKE) $(build)=$(@)
core-y := lib/ kernel/ misc/ net/ boards/ arch/ ext/ usb/
# arch/ must be last here so that .gnu.linkonce magic for interrupts/exceptions
# works as expected
core-y := lib/ kernel/ misc/ net/ boards/ ext/ usb/ arch/
drivers-y := drivers/
ifneq ($(strip $(MAKEFILE_APP_DIR)),)
@ -745,6 +746,9 @@ libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
libs-y := $(libs-y1) $(libs-y2)
# core-y must be last here. several arches use .gnu.linkonce magic
# to register interrupt or exception handlers, and defaults under
# arch/ (part of core-y) must be linked after drivers or libs.
export KBUILD_ZEPHYR_MAIN := $(drivers-y) $(libs-y) $(core-y)
export LDFLAGS_zephyr