RuleBuilder does its own ninja escaping, so values that will be
passed to RuleBuilder must not be pre-escaped. Add a new
android.ExpandNinjaEscaped method that explicitly handles ninja
escaping. Some of the expansion functions return ninja values
(like "${in}") that need to stay unescaped, so add a bool return
value to the expansion function in android.ExpandNinjaEscaped.
Test: expand_test.go
Change-Id: Ib03d4db38b5e3e5bffbd87acf14f55e276a53d04
An escaped $ sign in an expanded string needs to be re-escaped so it
can pass through to ninja.
Test: m -j libLLVMObject
Change-Id: I2f7890417fd6f534e6e21cace3d86ae9ef708ce5
To allow genrules with more than one tool, rename the tool property to
tools and make it an array, replace $tool with $(location <label>),
and use $() for other variables for consistency.
Also remove the host bin directory from the genrule path, and the
$srcDir variable, using either of them would have caused dependency
issues.
Bug: 31948427
Test: compare build.ninja
Change-Id: Icf6d3bce2bea00fec1363fd65c0bdf96d09281bf
(cherry picked from commit de6bd86d24)
