Add a build step for the unified headers.

Install them to $NDK/sysroot.

Bug: android/ndk#120
Change-Id: I03f989059f1852db9ea69fc9dd9d8556a613320d

build/lib/build_support.py

@@ -269,9 +269,18 @@ def make_package(name, directory, out_dir):
     os.chdir(os.path.dirname(directory))
     basename = os.path.basename(directory)
     try:
+        # repo.prop files are excluded because in the event that we have a
+        # repo.prop in the root of the directory we're packaging, the repo.prop
+        # file we add later in this function will create a second entry (the
+        # zip format allows multiple files with the same path).
+        #
+        # The one we create here will point back to the tree that was used to
+        # build the package, and the original repo.prop can be reached from
+        # there, so no information is lost.
         subprocess.check_call(
             ['zip', '-x', '*.pyc', '-x', '*.pyo', '-x', '*.swp',
-             '-x', '*.git*', '-0qr', path, basename])
+             '-x', '*.git*', '-x', os.path.join(basename, 'repo.prop'), '-0qr',
+             path, basename])
     finally:
         os.chdir(cwd)
 

build/tools/package.py

@@ -102,6 +102,7 @@ def get_all_packages(host, arches):
         ('shaderc', 'sources/third_party/shaderc'),
         ('simpleperf', 'simpleperf'),
         ('stlport', 'sources/cxx-stl/stlport'),
+        ('sysroot', 'sysroot'),
         ('system-stl', 'sources/cxx-stl/system'),
         ('vulkan', 'sources/third_party/vulkan'),
     ]

checkbuild.py

@@ -61,6 +61,7 @@
     'shader_tools',
     'simpleperf',
     'stlport',
+    'sysroot',
     'system-stl',
     'vulkan',
 }
@@ -556,6 +557,11 @@ def build_gtest(_, dist_dir, __):
     build_support.make_package('gtest', path, dist_dir)
 
 
+def build_sysroot(_out_dir, dist_dir, _args):
+    path = build_support.android_path('prebuilts/ndk/platform/sysroot')
+    build_support.make_package('sysroot', path, dist_dir)
+
+
 def build_vulkan(out_dir, dist_dir, args):
     print('Constructing Vulkan validation layer source...')
     vulkan_root_dir = build_support.android_path(
@@ -812,6 +818,7 @@ def main():
         ('shader_tools', build_shader_tools),
         ('simpleperf', build_simpleperf),
         ('stlport', build_stlport),
+        ('sysroot', build_sysroot),
         ('system-stl', build_system_stl),
         ('vulkan', build_vulkan),
     ])