Fix issue when a project and its libraries use the same jar files.

This is only an issue in Ant because in Eclipse we don't automatically
pull the jar files from libraries into the main project (we should somehow
now that we have the Library Projects jar container that is dynamic).

Right now we do a simple size/sha1 check on libraries that have the same
name to figure out if they are the same version. If they are we only
use one in the dex step (that notoriously fails to add the same class
twice). If they are different we stop the build as it's an error (having
two library projects depending on two different versions of a jar file
should be an error as we can be sure the two versions are API compatible).

For later: not use the file name only? find a way to version the libraries
and to have them declare whether they are API compatible with older versions?

Also added a hard-coded case for the Android Support Library. If both the v4
and the v13 are detected, use the v13 only as it includes the v4 already.

New test apps. Three cases:
- main and library projects with duplicate jar files that are identical
- main and library projects with duplicate jar files that are NOT identical
- main and library projects with v4 and v13 in the dependency list.

Change-Id: I3a9abdcbec635d7c9d3228bdd105120f77178b27

1 files changed, 17 insertions, 0 deletions

diff --git a/testapps/jarCheckTests3/basicLibWithSupport2/ant.properties b/testapps/jarCheckTests3/basicLibWithSupport2/ant.properties
new file mode 100644
index 0000000..ee52d86
--- /dev/null
+++ b/testapps/jarCheckTests3/basicLibWithSupport2/ant.properties
@@ -0,0 +1,17 @@
+# This file is used to override default values used by the Ant build system.
+#
+# This file must be checked in Version Control Systems, as it is
+# integral to the build system of your project.
+
+# This file is only used by the Ant script.
+
+# You can use this to override default values such as
+#  'source.dir' for the location of your java source folder and
+#  'out.dir' for the location of your output folder.
+
+# You can also use it define how the release builds are signed by declaring
+# the following properties:
+#  'key.store' for the location of your keystore and
+#  'key.alias' for the name of the key to use.
+# The password will be asked during the build when you use the 'release' target.
+