Fixes a build error when PLATFORM_SDK_VERSION is not set.
Bug: 31559095
Test: attempt to build host bionic
Change-Id: I9cbdcea206ef1239c330a5adafbfa5cc797fef5e
Use .balign because what the argument means doesn't vary between
architectures.
Bug: http://b/70166421
Test: builds
Change-Id: I1d54f2f6942dd2893f3fda30bac08d07ea9cd346
The .note.android.ident section is only used by GDB, which doesn't
care what section type the section is, but it would be convenient
for readelf -n to be able to find the section too.
The old way of getting the .note.android.ident section to be of type
SH_NOTE involved compiling from .c to .s using gcc, running sed to
change progbits to note, and then compiling from .s to .o using gcc.
Since crtbrand.c only contains a section containing data, a
crtbrand.S can be checked in that will compile on all platforms,
avoiding the need for sed.
Also add crtbrand.o to crtbegin_so.o so that libraries also get
the note, and to the crt workaround in arm libc.so.
Change-Id: Ica71942a6af4553b56978ceaa288b3f4c15ebfa2
