Commit Graph

49 Commits

Author SHA1 Message Date
Patrice Arruda 7cc2074885 Run the metrics uploader in the background.
The metrics uploader was currently running on foreground where it
would copy the metrics files in a separate directory and then forked
into the background for the upload process. As a result, running the
lunch command would take a second longer to run since each metrics
uploader run had an average of half a second.

Bug: 140638454
Test: * Wrote and updated unit test cases.
      * Set ANDROID_ENABLE_METRICS_UPLOAD to point to the latest
        metrics_uploader bash script. Executed the "lunch 1" command
	and measured the running time. Executed "m nothing" command
	and checked that the metrics were uploaded.
      * Ran "lunch 1" and "m nothing" with
        ANDROID_ENABLE_METRICS_UPLOAD=""
      * Removed oauth from metrics_uploader and ran "m nothing" and
        "lunch 1". The oauth Message appeared only to "m nothing"

Change-Id: I13c61e666c8f44613dee291a704cef6a27335188
2020-06-13 00:34:37 +00:00
Patrice Arruda 219eef3878 Upload build metrics after a build is completed.
Soong now supports the ability to upload metrics to another location
by setting the ANDROID_ENABLE_METRICS_UPLOAD to an uploader that
accepts the upload.proto proto buffer message. When the environment
variable is set, a set of build metrics files (soong_metrics,
rbe_metrics.pb and build_error) is uploaded.

Bug: 140638454
Test: * Wrote unit test cases
      * Setup the uploader, built a succcessful and failed aosp_arm-eng
        target and monitor the uploading of the metrics.
Change-Id: I76a65739c557dc90345e098ca03119a950ece2d2
2020-06-01 17:29:30 +00:00
Patrice Arruda 74b43998e7 Add build progress in Soong UI
Soong UI generates a proto file named build_progress.pb in $(OUT_DIR)
output directory that contains build action numbers (how many are executing,
finished and total) during the course of a build. This is for external
systems that invokes the Platform Build Systems and would like to know
the completion status.

Bug: b/150401146
Test: Wrote a bash script that continuously read the
build_progress.pb file and computed the build completed percentage
while building the aosp_arm-eng target. Compared the percentage between
the Soong output console and the one reported by the bash script.

Change-Id: I7c7347bc8e41958093892d8e2731c4f4169937dd
2020-03-19 13:15:05 -07:00
Colin Cross 8b8bec3b3a Create a highmem pool and put metalava into it
Create a highmem pool based on the total RAM and the number of CPUs,
with an override via the NINJA_HIGHMEM_NUM_JOBS variable.  Put
metalava into the highmem pool.

Ninja does not support nested pools, and when goma or RBE is enabled
the maximum ninja parallelism is set very high with local jobs in a
local pool.  When both the local pool and highmem pool are enabled,
the total number of local jobs will be as high as the sum of the sizes
of the two pools.  Keep the highmem pool limited to 1/16th of the
local pool when remote builds are enabled to try to minimize the
effect while still limiting highmem jobs.

Fixes: 142644983
Test: m nothing, examine pools
Test: m USE_GOMA=true nothing, examine pools
Change-Id: Id79f11f44948992960ac34ecf831dacbe21bd332
2020-01-24 11:44:23 -08:00
Colin Cross c0b9f6b9d2 Force dumpvars into dumb terminal mode and move log files
Force soong_ui in dumpvars mode to use a dumb terminal so that it
doesn't print an empty status table.  Also move the logs to files
that are prefixed with "dumpvars-" so that they don't rotate the
real build logs.

Fixes: 139307849
Test: lunch
Change-Id: If92421af07731fedc9ca42670f309e95922a2224
2019-09-23 14:24:57 -07:00
Dan Willemsen 57d5786d59 Merge "Remove support for ONE_SHOT_MAKEFILE"
am: d778b93168

Change-Id: I32ef15cf94df3524e4e805327d4af246c95226a6
2019-08-01 14:31:53 -07:00
Dan Willemsen ce41e943be Remove support for ONE_SHOT_MAKEFILE
Test: treehugger
Change-Id: Icdbe62bcb7bc4717228c5d974962b939d8eafee6
2019-07-31 18:11:27 -07:00
Dan Willemsen 12efb0533e Merge "Deprecate ONE_SHOT_MAKEFILE"
am: 1d73e5e566

Change-Id: Ie7ec9690ada5333a04bae34b7be2b1921863e0fc
2019-07-29 13:19:26 -07:00
Dan Willemsen c6360837bb Deprecate ONE_SHOT_MAKEFILE
mm is now doing the same thing as mma. Now print a deprecation message
for other tools that may be setting ONE_SHOT_MAKEFILE directly (or users
that are still using a very old envsetup.sh).

Test: mm  # does not print
Test: ONE_SHOT_MAKEFILE=bionic m
Change-Id: I98221657024d824a61c0d721d5c7dd1a2ea2fb1e
2019-07-25 14:12:38 -07:00
Patrice Arruda fe6a621684 Merge "soong-ui: Redirect mmm to mmma."
am: 216e315a34

Change-Id: If9a777fd46c06d06fedeee558d68653c72a726df
2019-07-19 04:50:34 -07:00
Treehugger Robot 216e315a34 Merge "soong-ui: Redirect mmm to mmma." 2019-07-18 21:58:24 +00:00
Patrice Arruda 0cacc0468f Merge "soong-ui: Redirect mm to mma."
am: 80b562eb5b

Change-Id: I4f24fd0a055c7d7e80ff61d4c5ed1cd695ea4d6e
2019-07-18 14:06:45 -07:00
Patrice Arruda a9e1215870 soong-ui: Redirect mmm to mmma.
This is the first part of deprecating the mmm command. mmm will simply
be redirected to mmma by building the list of modules with their
dependencies.

Bug: b/135187558
Test: Ran mmm external/libusb:libusb.
Change-Id: I50cf0d6a07197556ab6130e612561c6d5a3fb31e
2019-07-18 09:43:20 -07:00
Patrice Arruda 2274102f34 soong-ui: Redirect mm to mma.
This is the first part of deprecating the mm command. mm will simply
be redirected to mma by building the modules and their dependencies.

Bug: b/135187558
Test: Ran mm in external/protobuf directory.
Change-Id: Idad40f89e3768aeb459172f632a44fd7b0a201bc
2019-07-18 09:41:19 -07:00
Colin Cross a73c8a4e61 Merge "Compute critical path when ninja finishes" am: 7c9b4cf144
am: 7b4a190539

Change-Id: I1f3869fa3d5afb437bab8a4bf77ea03934c1d4ab
2019-06-26 16:53:05 -07:00
Colin Cross 7b6245388c Compute critical path when ninja finishes
Keep a running map of the critical path to each edge as it
finishes.  At the end of the build, find the edge with the
longest critical path and print the path to out/soong.log.

Test: critical_path_test.go
Change-Id: Ie01d26b068b768156b166bff00cdc3273e8124ca
2019-06-26 11:31:17 -07:00
Patrice Arruda 55ac3ddb21 Merge "Soong: Add build_error proto raw file to $(OUT_DIR)." am: 7d7cae85ab
am: 9f9778cff0

Change-Id: I7d2ee16ad31446360142295c61562cff467f9d19
2019-06-24 16:43:43 -07:00
Patrice Arruda 297cebad26 Soong: Add build_error proto raw file to $(OUT_DIR).
Soong_ui produces a build_error raw file to $(OUT_DIR) where
the file contains a list of build action errors. Each build action
error represents an error raised by a command. The build_error file
is populated if there was a build error.

Bug: b/132969697
Test: Ran m for successful build. Introduced a broken build change,
      ran m and verified using printproto that build_error was
      generated successfully.

Change-Id: I690ca1778b4e56f144a3173ba1d16d8494c32c15
2019-06-24 13:02:35 -07:00
Patrice Arruda 4b557d8f86 Merge "Soong: Add BUILD_MODULES build action in soong_ui." am: 45cdb71290
am: d009ef35b8

Change-Id: I0216045ba79f0cc26a4de5883589f52a65d9919c
2019-06-20 20:59:32 -07:00
Patrice Arruda 3928206ecc Soong: Add BUILD_MODULES build action in soong_ui.
There was one case that did not work:
  1) Create dir in root source tree
  2) Run "m libc"

The build would fail as it was using the mma logic. A separate
one named BUILD_MODULES was added to allow building specific
modules in any directories using the "m" command.

Bug: b/130049705
Test: unit test cases, ran "m libc" in a tmp directory inside
      of the source tree.

Change-Id: I8d23e685a673a311001ee8edd89bd73b662392dd
2019-06-20 16:35:12 -07:00
Patrice Arruda 5dbf869760 Soong: Use ctx.Writer in flag usage for dumpVar and dumpVars in soong_ui. am: db4c2f115e
am: e6fe9edbef

Change-Id: Ifcd0332f5f055633e4284c3387beea84cedf86a7
2019-06-18 15:52:12 -07:00
Patrice Arruda db4c2f115e Soong: Use ctx.Writer in flag usage for dumpVar and dumpVars in soong_ui.
ctx.Writer is recommended stream to use for standard io.

Fixes: b/135487952
Test: Lunch and executed ./out/soong_ui --dumpvar-mode and
--dumpvars-mode to check the usage is output to the console.

Change-Id: I38351ebdb05f49f92d6b4bfb0423092299d1c5ea
2019-06-18 20:32:01 +00:00
Patrice Arruda 268a702f06 Merge "soong_ui: Add --build-mode flag in soong_ui" am: 2f93a2e07b
am: 9123c55392

Change-Id: Ib7ca530857ad469da3e634b7115a308b6d0d1972
2019-06-17 21:25:36 -07:00
Patrice Arruda b7b2282fd1 soong_ui: Add --build-mode flag in soong_ui
The --build-mode flag is a new flag in soong_ui that accepts a build
action (m, mm, mmm, mma, mmma), the directory where the build action
is occuring and an optional list of build arguments and invokes the
build option. This is to deprecate the build actions behavior in
envsetup.sh and start using the one defined in soong_ui.

Bug: b/130049705
Test: Ran lunch and ran all the build action commands in soong_ui.
      Ran a bunch of invalid commands such as no Android.mk file in
      a specific directory, invalid target name, etc...

Change-Id: I88e9e59f47f8c5cdc872fb83a0f3f0a0919885b6
2019-06-17 17:21:32 -07:00
Patrice Arruda 10b659a60f Merge "Soong: Fix the package name in metrics.proto file" am: eec8d3aee3
am: 33989c88c3

Change-Id: Ife7e9c2ddeeeda40976c23f8ba07ba4bee53935c
2019-06-17 17:12:42 -07:00
Patrice Arruda 0cc5b21516 Soong: Fix the package name in metrics.proto file
The metrics.proto needs to be imported to Google3 in order to unmarshal
the build metrics data from bigstore. Cleaned up the enum names to use
the Camel naming convention and renamed the build_metrics to
soong_metrics to be more specific to soong and to allow quering
soong_metrics files from bigstore.

Bug: b/135280521
Test: lunch andf m -j. Checked if soong_metrics was generated correctly
      by using printproto command.

Change-Id: I998c8d05db592e94a653d6ca32250b80df3c9b21
2019-06-14 15:27:46 -07:00
Colin Cross ceec6a2295 Merge changes I555ad21a,I9d46761e,I917bdeee,I5bc5476a,I59bbdae4, ... am: 6ebe07def7
am: 1337decdff

Change-Id: I2f27851391ad68137cc66133de575d75a3c83a74
2019-06-14 01:30:19 -07:00
Colin Cross e0df1a36b2 Move all output through StatusOutput
Write log output through StatusOutput so that the status implementation
can synchronize it with its own output.

Test: status_test.go
Change-Id: I917bdeeea4759a12b6b4aa6d6d86ee18a2771723
2019-06-12 21:30:56 -07:00
Colin Cross 097ed2a37c Remove terminal.Writer
terminal.Writer is now just a wrapper around stdio.Stdout() without
any useful functionality.  Replace it with stdio.Stdout() as an
io.Writer.

Test: ui/terminal/status_test.go
Change-Id: I5bc5476afdca950b505642f0135a3af9d37fbe24
2019-06-12 21:30:56 -07:00
Patrice Arruda d2e1149cc5 resolve merge conflicts of a3898089ba to qt-dev-plus-aosp
Bug: None
Test: Ran soong_ui.bash which compiles the soong_ui.
Change-Id: I0b8083e3e5ee69c8cbf17443fbc038ec7b5a0b10
2019-05-06 19:24:32 -07:00
Patrice Arruda a5c2542f68 Soong: Refactor the soong_ui arguments processing to be more like bazel.
Currently, the command line argments is being processed in multiple
places. In the main soong_ui arguments, there are several if statements
that checks if a specific argument was specified in order to execute
the requested operation. This does not scale well when adding or
removing a command in the near future. In order to support the build
commands (m, mma, etc...) from the envsetup.sh in soong_ui, a refactor
was required in order to add a command rather quickly and to have the
flexibiity to unit test the command. The soong_ui arguments format is
as follows:

soong_ui <command> [<arg 1> <arg 2> ... <arg n>]

The <command> is a specific operation to be executed. The arguments
after the command are processed by the command itself.

Below is the list of changes made in this commit:

 * Created a new command infrastructure that allows adding
   or deprecating a command easily.

 * Fixed a bug when running ./soong_ui.bash directly would cause
   a panic due to index being out of range for args list.

Bug: b/130049705
Test: Below is the list of testing done on this commit:
    * Ran lunch and verified that the output is the same as the the output
      without the modifications. lunch indirectly runs soong_ui passing
      in the --dumpvar-mode (to read makefile variables such as
      TARGET_PRODUCT) and --dumpvars-mode (to build the build cache).
    * Ran ./soong_ui.bash directly (with unsupported flags and no flags)
      and the proper message appeared that soong native UI is not yet
      available.
    * Ran m, mm, mmm, mma, mmma commands.
    * Ran the make installclean command:
         make -j80 TARGET_PRODUCT=aosp_arm64 TARGET_BUILD_VARIANT=eng dist DIST_DIR=/tmp/helloworld installclean
    * Ran ./out/soong_ui -j80 --make-mode PRODUCT-aosp_arm64-eng dist checkbuild tests

Change-Id: Iee4de7ec0fa4661206fda8ae1fe6fa4487d9bb22
Merged-In: Iee4de7ec0fa4661206fda8ae1fe6fa4487d9bb22
2019-05-06 14:05:52 -07:00
Dan Willemsen 6b783c8391 Fix recent builds with bad dangling symlinks
It appears that there's a bug in repo where when a linkfile is removed
from the manifest, the symlink remains in the source tree.

Cleaning this up needs to happen before we start scanning the source
tree for Android.bp/Android.mk files, so this has to be done very early
-- way before CleanSpec processing could handle it.

Bug: https://bugs.chromium.org/p/gerrit/issues/detail?id=10583
Test: ln -s missing hardware/qcom/sdm710/Android.bp; m
Change-Id: Ib68f2507ffe58ccdd9fbc88925f8a4f6150f2f7d
2019-03-08 19:56:57 +00:00
Sasha Smundak c0c9ef9964 Provide an option to reduce build's verbosity.
If ANDROID_QUIET_BUILD environment variable is set to '1', do not show 20
lines of the environment variables. In addition, for the failing step show
only the step name and output, omitting the command proper (the verbose log
as well as error.log still contains it).
If build succeeds, the output of the build itself consists of a single
line:
```
> m androidmk
[100% NN/NN] <last command>
```

When it fails, the output does not contain sometimes very long command
line:
```
> m androidmk
[ 97% NN/MM] test androidmk
FAILED: <step>
--- FAIL: TestEndToEnd (0.01s)
    androidmk_test.go:1025: failed testcase 'prebuilt_etc_TARGET_OUT_ETC'
        input:
        include $(CLEAR_VARS)
        LOCAL_MODULE := etc.test1
        LOCAL_MODULE_CLASS := ETC
        LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/foo/bar
        include $(BUILD_PREBUILT)

        expected:
        prebuilt_etc {
            name: "etc.test1",
            filename: "foo/bar",
        }

        got:
        prebuilt_etc {
            name: "etc.test1",
            filename: "foo/bar",

        }

FAIL
17:50:53 ninja failed with: exit status 1
```
[The related change in build/make/envsetup.sh suppresses timing display
when the same variable is set.]

Change-Id: I4d3c72457de031ff58a324c2fe98f4c1d10f8239
Test: treehugger
2019-02-07 12:21:45 -08:00
Nan Zhang d50f53bc25 Fix the issue for dumping metrics file to artifact
Bug: b/63815990
Test: N/A
Change-Id: I72ddc8579626e652a8c27299e009b24ded5312f6
2019-01-07 20:26:51 -08:00
Nan Zhang 17f2767724 Generate build timing metrics to proto format file
Test: Dumped the text formated based metrics file to out dir,
and checked the file.
Bug: b/63815990

Change-Id: Iff476f72a0be74eb53b6b26ef468d11c0f24a404
2019-01-04 15:54:01 -08:00
Dan Willemsen 59339a29e1 Fix `go vet` issues
Test: go vet ./...
Change-Id: Ifb936ccc5e2b5a2c3fcbbbcb54f680e2973ea1b3
2018-07-22 21:18:45 -07:00
Dan Willemsen c35b3813bb Fix missing errors during lunch
Bug: 111499523
Test: lunch foo
Test: m nothing 2>/dev/null
Change-Id: Ife888d4b731bc0a0dd253ac0c8c97d6c37593d73
2018-07-16 19:59:10 -07:00
Dan Willemsen b82471ad6d Add a unified status reporting UI
This adds a new status package that merges the running of "actions"
(ninja calls them edges) of multiple tools into one view of the current
state, and gives that to a number of different outputs.

For inputs:

Kati's output parser has been rewritten (and moved) to map onto the
StartAction/FinishAction API. A byproduct of this is that the build
servers should be able to extract errors from Kati better, since they
look like the errors that Ninja used to write.

Ninja is no longer directly connected to the terminal, but its output is
read via the protobuf frontend API, so it's just another tool whose
output becomes merged together.

multiproduct_kati loses its custom status routines, and uses the common
one instead.

For outputs:

The primary output is the ui/terminal.Status type, which along with
ui/terminal.Writer now controls everything about the terminal output.
Today, this doesn't really change any behaviors, but having all terminal
output going through here allows a more complicated (multi-line / full
window) status display in the future.

The tracer acts as an output of the status package, tracing all the
action start / finish events. This replaces reading the .ninja_log file,
so it now properly handles multiple output files from a single action.

A new rotated log file (out/error.log, or out/dist/logs/error.log) just
contains a description of all of the errors that happened during the
current build.

Another new compressed and rotated log file (out/verbose.log.gz, or
out/dist/logs/verbose.log.gz) contains the full verbose (showcommands)
log of every execution run by the build. Since this is now written on
every build, the showcommands argument is now ignored -- if you want to
get the commands run, look at the log file after the build.

Test: m
Test: <built-in tests>
Test: NINJA_ARGS="-t list" m
Test: check the build.trace.gz
Test: check the new log files
Change-Id: If1d8994890d43ef68f65aa10ddd8e6e06dc7013a
2018-07-12 14:15:31 -07:00
Colin Cross 37193495cf Revert "Revert "Test for dangling rules in make checkbuild""
This reverts commit fb941913a3.

Reapplies I4933187e8b72f2ef0c32d18ffea756e2c6fa417c with fixes
to disable the check for mac builds, where many modules are
disabled and the check is just going to cause more problems.

Test: m checkbuild
Change-Id: If6712c90ececd5d015fcdcdeefe0c3d4f5590711
2017-11-25 05:26:10 +00:00
Colin Cross fb941913a3 Revert "Test for dangling rules in make checkbuild"
This reverts commit 7709a05770.

Reason for revert: Broke mac checkbuilds

Change-Id: If71ec9198ca8943d90ce9d5e3a277faf239e38a5
2017-11-13 23:38:57 +00:00
Colin Cross 7709a05770 Test for dangling rules in make checkbuild
Get a list of leaf nodes in the dependency graph
from ninja, and make sure none of them are in the
output directory.  This ensures that there are no
rules that depend on a file in the output directory
that doesn't have rule to generate it.  The check
will catch a common set of build failures where
a rule to generate a file is deleted (either by
deleting a module in an Android.mk file, or by
modifying the build system incorrectly).  These
failures are often not caught by a local incremental
build because the previously built files are still
present in the output directory.

Bug: 36843214
Bug: 68062417
Test: manual
Change-Id: I4933187e8b72f2ef0c32d18ffea756e2c6fa417c
2017-11-13 12:47:42 -08:00
Dan Willemsen 051133ba54 Add --dumpvar[s]-mode to replace config.mk uses
build/soong/soong_ui.bash --dumpvars-mode \
    --vars="..." \
    --abs-vars="..." \
    --var-prefix="..." \
    --abs-var-prefix="..."

is similar to the previous:

  CALLED_FROM_SETUP=true BUILD_SYSTEM=build/core \
  make -f build/core/config.mk dump-many-vars \
    DUMP_MANY_VARS="..." \
    DUMP_MANY_ABS_VARS="..." \
    DUMP_VAR_PREFIX="..." \
    DUMP_ABS_VAR_PREFIX="..."

and

  build/soong/soong_ui.bash --dumpvar-mode [--abs] VAR

is similar to the previous:

  CALLED_FROM_SETUP=true BUILD_SYSTEM=build/core \
  make -f build/core/config.mk dumpvar-[abs-]-VAR

But uses soong_ui and ckati, so that we use a consistent make parser and
sandboxing configurations.

One major output difference between the pure make implementation and
this one is that report_config in Go is implemented using embedded
newlines in single quotes, while the make implementation uses `` with
embedded echo commands. This seems to work fine for both bash and zsh,
and report_config isn't meant to be machine-parsed anyways.

Test: build/soong/soong_ui.bash --dumpvar-mode report_config
Test: build/soong/soong_ui.bash --dumpvar-mode TARGET_DEVICE
Test: build/soong/soong_ui.bash --dumpvar-mode --abs PRODUCT_OUT
Test: build/soong/soong_ui.bash --dumpvar-mode --abs ALL_PRODUCTS
Test: build/soong/soong_ui.bash --dumpvars-mode --vars="report_config TARGET_DEVICE" --abs-vars="ALL_PRODUCTS"
Test: build/soong/soong_ui.bash --dumpvars-mode --vars=TARGET_DEVICE --abs-vars=PRODUCT_OUT --var-prefix=v_ --abs-var-prefix=a_
Change-Id: I0fbd0732bbf6fcfcd24084cf3c830a91a4b6bfc2
2017-10-17 12:57:41 -07:00
Jeff Gaston b64fc1cab5 Run the Finder and make its results available to Kati
The Finder runs roughly 200ms faster than findleaves.py in aosp,
and runs roughly 400ms faster in internal master.

Bug: 64363847
Test: m -j

Change-Id: I62db8dacc90871e913576fe2443021fb1749a483
2017-08-16 14:56:00 -07:00
Dan Willemsen cae59bc29d Add microfactory tracing
Test: m clean; load out/build.trace.gz in chrome://tracing
Test: m -j nothing; load again
Change-Id: I67d4e006a4bdde593b54c20d6d93a48278fe696d
2017-07-13 15:09:44 -07:00
Dan Willemsen abc56d4fc7 Fix `dist` if $DIST_DIR/logs doesn't exist
Bug: 35886901
Test: rm -rf out; m -j dist
Change-Id: I1008d9eef884d60766e35a543e72df5df01d61de
2017-03-01 17:39:32 -08:00
Dan Willemsen 8a073a8b7b Ship the build log and trace on the build servers
Test: m -j; m -j dist
Change-Id: I4718e7a0cda6719bbab4243038ea2666c212cf19
2017-02-07 16:51:11 -08:00
Dan Willemsen d9f6fa28d6 Add build tracing
This creates a rotating build.trace.gz in the out directory that can be
loaded with chrome://tracing. It'll include start and end timings for
make/soong/kati/ninja, and it will import and time-correct the ninja log
files.

Test: m -j; load out/build.trace.gz in chrome://tracing
Test: multiproduct_kati -keep; load out/multiproduct*/build.trace.gz
Change-Id: Ic060fa9515eb88d95dbe16712479dae9dffcf626
2017-02-06 14:05:07 -08:00
Dan Willemsen c2af0bedc1 Add multiproduct_kati
This is a replacement for build/tools/kati_all_products.sh using the new
Soong ui/build package. It doesn't even attempt to run ninja, and it can
be configured to run only the product config, or only the product config
and Soong.

For AOSP on my machine:
 -only-config  1.4s
 -only-soong   1m20s
 <none>        13m

Test: multiproduct_kati
Change-Id: Ie3e6e7bdf692e46a8b8eb828f437190f8003500b
2017-02-06 14:05:07 -08:00
Dan Willemsen 1e70446251 Add a Go replacement for our top-level Make wrapper
Right now this mostly just copies what Make is doing in
build/core/ninja.mk and build/core/soong.mk. The only major feature it
adds is a rotating log file with some verbose logging.

There is one major functional difference -- you cannot override random
Make variables during the Make phase anymore. The environment variable
is set, and if Make uses ?= or the equivalent, it can still use those
variables. We already made this change for Kati, which also loads all of
the same code and actually does the build, so it has been half-removed
for a while.

The only "UI" this implements is what I'll call "Make Emulation" mode --
it's expected that current command lines will continue working, and
we'll explore alternate user interfaces later.

We're still using Make as a wrapper, but all it does is call into this
single Go program, it won't even load the product configuration. Once
this is default, we can start moving individual users over to using this
directly (still in Make emulation mode), skipping the Make wrapper.

Ideas for the future:
* Generating trace files showing time spent in Make/Kati/Soong/Ninja
  (also importing ninja traces into the same stream). I had this working
  in a previous version of this patch, but removed it to keep the size
  down and focus on the current features.
* More intelligent SIGALRM handling, once we fully remove the Make
  wrapper (which hides the SIGALRM)
* Reading the experimental binary output stream from Ninja, so that we
  can always save the verbose log even if we're not printing it out to
  the console

Test: USE_SOONG_UI=true m -j blueprint_tools
Change-Id: I884327b9a8ae24499eb6c56f6e1ad26df1cfa4e4
2017-02-06 14:05:07 -08:00