Long time to recompile ART library. How to reduce loading time step before build library.

Chatsiri Rattana

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Dec 31, 2015, 5:48:44 AM12/31/15

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Hello All,

ART library built success in first step. I was improved some member function and recompile source on in library, but use long time to load Android.mk before build ART library. such as

...

including ./external/chromium_org/Android.mk ...
including ./external/clang/Android.mk ...
including ./external/compiler-rt/Android.mk ...
including ./external/conscrypt/Android.mk ...
including ./external/deqp/Android.mk ...
including ./external/dexmaker/Android.mk ...
including ./external/dhcpcd/Android.mk ...
including ./external/dnsmasq/Android.mk ...
including ./external/doclava/Android.mk ...
including ./external/drm/Android.mk ...
including ./external/droiddriver/Android.mk ...
including ./external/e2fsprogs/Android.mk ...
including ./external/easymock/Android.mk ...
including ./external/eigen/Android.mk ...
including ./external/eject/Android.mk ...
...
...
...
host C++: dex2oat <= art/dex2oat/dex2oat.cc
host C++: libart_32 <= art/runtime/dex_file.cc
host C++: libart_32 <= art/runtime/native/dalvik_system_DexFile.cc
host C++: libart_32 <= art/runtime/native/java_lang_VMClassLoader.cc
host C++: libart_32 <= art/runtime/zip_archive.cc
host C++: libziparchive-host_32 <= system/core/libziparchive/z

How to reduce time to load Android.mk because some file source defined on Android.mk didn't improved or edit?

Thank in advance,
Chatsiri Rattana

Hamilton Turner

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Jan 20, 2016, 1:45:05 PM1/20/16

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Try `mmm art` - if all your changes are in subdirectories of ROOTDIR/art, then this should recompile it for you. Note that this will *just* compile it, if you want to flash it you probbaly also need `make snod`

Colin Cross

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Jan 20, 2016, 11:24:12 PM1/20/16

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FYI, this is vastly improved in current AOSP master. Incremental
builds without touching any Android.mk files or changing products will
skip the "including .../Android.mk" step. A top level make with no
changes at all can take as little as 5 seconds.

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Hamilton Turner

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Jan 22, 2016, 2:23:44 AM1/22/16

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Hmm, is that what the database.mk file is for -- speeding up later calls to make? I never really took time to see what it was for, but was always curious why my "mgrep" calls turned up so much in that file

Chatsiri Rattana

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Apr 11, 2016, 10:31:31 AM4/11/16

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Hello all,

Command line mmm art compiles ART source. Show and error as.

/Android/android-x86s$ mmm art
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=5.1.1
TARGET_PRODUCT=full
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
TARGET_CPU_VARIANT=generic
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_OS=linux
HOST_OS_EXTRA=Linux-3.5.0-18-generic-x86_64-with-Ubuntu-12.04-precise
HOST_BUILD_TYPE=release
BUILD_ID=LVY48I
OUT_DIR=out
============================================
Using target GCC 4.8 disables thread-safety checks.
grep: kernel/arch/arm/configs/goldfish_defconfig: No such file or directory
grep: kernel/arch/arm/configs/goldfish_defconfig: No such file or directory
grep: kernel/arch/arm/configs/goldfish_defconfig: No such file or directory
make: Entering directory `/Android/android-x86s'
make: *** No rule to make target `out/host/linux-x86/obj/SHARED_LIBRARIES/libbacktrace_libc++_intermediates/export_includes', needed by `out/host/linux-x86/obj/SHARED_LIBRARIES/libart_intermediates/import_includes'. Stop.
make: Leaving directory `/Android/android-x86s'

Chih-Wei Huang

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Apr 22, 2016, 4:24:09 PM4/22/16

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Chatsiri Rattana於 2016年4月11日星期一 UTC+8下午10時31分31秒寫道：

You should try 'mmma art' first to ensure all dependencies are built.
It needs to parse all Android.mk as well.
After that you can use 'mmm art'.

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