platform_build_kati/symtab.h, branch oreo-mr1-wear-release

Support marking variables as readonly

2016-09-30T05:21:10+00:00

When the magic variable .KATI_READONLY is set to a variable name, any
further attempts to modify the named variable will result in an error.

  FOO := bar
  .KATI_READONLY := FOO
  FOO := baz  # Error!

This is useful to make some global configuration readonly so that
another makefile cannot change it. In Android, we emulated this by
backing up some global configuration before including the Android.mk
files, then comparing the current values to the backed up values after
they've been included. But this means we don't know the location that
modified the variable, just that something did. And it's not perfect,
since the backup can also be changed.

Something similar to this could be implemented with `override`, but then
setting the variable silently fails, and it still could be overriden
with another override.

[C++] Honor "override" when setting global variable

2016-04-12T09:31:46+00:00

Regression when compared to GNU make behaviour.

Test case:

 $ cat Makefile.override-failure
 $(info VAR: '$(VAR)')
 override VAR := test
 $(info VAR: '$(VAR)')
 override VAR := test-new
 $(info VAR: '$(VAR)')
 VAR := test-should-not-work
 $(info VAR: '$(VAR)')

 $ make -f Makefile.override-failure
 VAR: ''
 VAR: 'test'
 VAR: 'test-new'
 VAR: 'test-new'
 make: *** No targets.  Stop.

 $ ckati -c --warn -f Makefile.override-failure
 VAR: ''
 VAR: 'test'
 VAR: 'test'
 VAR: 'test'
 *** No targets.

Fixes https://github.com/google/kati/issues/50

Change-Id: I9c4185c30cfcf5602da7e0ac98b7e9c420788005

[C++] Associate global variables with Symbols directly

2016-02-22T07:19:42+00:00

[C++] Speed up set by using integer value of Symbol

2015-10-03T01:57:31+00:00

Use ordered containers to prevent changes to ninja files

2015-10-01T23:12:36+00:00

When using --gen_all_targets / --gen_all_phony_targets, we're changing
the selected targets using unordered containers. This causes trivial
changes to the makefiles to trigger large changes to the generated ninja
files. Switch to using ordered containers so that the order is the same
every time.

[C++] Correct the implementation of $*

2015-09-11T07:33:16+00:00

Revert "Revert "[C++] Fix Symtab on MacOSX""

2015-07-16T20:55:49+00:00

This reverts commit 312e2d27378c47c263e83f0993f1cf67ef4c4235.

I have accidentally reverted the change

Revert "[C++] Fix Symtab on MacOSX"

2015-07-16T18:32:38+00:00

This reverts commit 6ab9d4614dcf692d378492e5cad1e2799d288d2e.

[C++] Fix Symtab on MacOSX

2015-07-16T18:30:50+00:00

On MacOSX string objects will be copied when vector
grows and this invalidates StringPiece objects.

[C++] Have all phony targets in build.ninja

2015-07-15T16:37:16+00:00

Also specify the default target not to build all phony targets
by default.