Like others, use HAVE_ prefix and name it HAVE_LTTNG_UST to be the same
name as exported by pkg-config While at it remove wrong comment with
_HELLO_TP_H.
Sort include alphabetically and make them in order:
Main header
system headers
library headers
local headers
While reordering, change a include of endian.h to our sparse-endian.h
which is more reliant to toolchain changes.
Support for perf api using lttng.
Some additional build tricks needed for bebop because lttng uses dl_open
which is not compatible with a static link on a different libc as used
on the bebop
Lucas De Marchi
Julien BERAUD