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build: use TARGET_SUPPORTS_32_BIT_APPS and TARGET_SUPPORTS_64_BIT_APPS 

Use TARGET_SUPPORTS_32_BIT_APPS and TARGET_SUPPORTS_64_BIT_APPS to
determine which native libraries to build for an app.  If
both are set, it will use 64-bit unless TARGET_PREFER_32_BIT is set.
If only one is set, it will only build apps that work on that
architecture.  If neither is set it will fall back to only building
32-bit apps.

On existing 32-bit devices neither variable will be set, and the
build system will continue to build 32-bit apps.

Once a device has support for a 64-bit runtime, the same logic
that selects the dual runtimes should set TARGET_SUPPORTS_32_BIT_APPS
and TARGET_SUPPORTS_64_BIT_APPS, and packages will be built for
the preferred arch, or fall back to the non-preferrred arch if
necessary.

For testing, a device may set TARGET_SUPPORTS_64_BIT_APPS without
TARGET_SUPPORTS_32_BIT_APPS to produce only 64-bit apps.

Change-Id: I5b5e23f15602c3cf9bd96791971208a85492c7a3
This commit is contained in:
Colin Cross 2014-04-10 11:29:05 -07:00
parent dc1c95aa20
commit 1750944332
1 changed files with 33 additions and 0 deletions
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33
core/package.mk
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@ -5,6 +5,39 @@
include $(BUILD_SYSTEM)/multilib.mk
ifeq ($(TARGET_SUPPORTS_32_BIT_APPS)|$(TARGET_SUPPORTS_64_BIT_APPS),true|true)
# packages default to building for either architecture,
# the preferred if its supported, otherwise the non-preferred.
else ifeq ($(TARGET_SUPPORTS_64_BIT_APPS),true)
# only 64-bit apps supported
ifeq ($(filter $(my_module_multilib),64 both first),$(my_module_multilib))
# if my_module_multilib was 64, both, first, or unset, build for 64-bit
my_module_multilib := 64
else
# otherwise don't build this app
my_module_multilib := none
endif
else
# only 32-bit apps supported
ifeq ($(filter $(my_module_multilib),32 both),$(my_module_multilib))
# if my_module_multilib was 32, both, or unset, build for 32-bit
my_module_multilib := 32
else ifeq ($(my_module_multilib),first)
ifndef TARGET_IS_64_BIT
# if my_module_multilib was first and this is a 32-bit build, build for
# 32-bit
my_module_multilib := 32
else
# if my_module_multilib was first and this is a 64-bit build, don't build
# this app
my_module_multilib := none
endif
else
# my_module_mulitlib was 64 or none, don't build this app
my_module_multilib := none
endif
endif
LOCAL_NO_2ND_ARCH_MODULE_SUFFIX := true
# if TARGET_PREFER_32_BIT is set, try to build 32-bit first