On some systems (e.g. Github Travis) make seems to have a problem with
its job control, resulting in a race condition where multiple make
instances try to build the same file at the same time. For most files
this is not a problem, but those auto-generated using an append
operation (>>) the output file can become garbled. Solve this by using
an atomic file creation method.
Change-Id: I1acb2387e2ca6ca30ddc3742143fd910032bfbb0
Why:
* When running make clean, the following files are not cleaned:
daemon/dtmf_rx_fillin-test.c
daemon/dtmf_rx_fillin-test
daemon/fix_frame_channel_layout-test.c
daemon/fix_frame_channel_layout-test
...
To avoid repeated strcmp()s and make use of switch()'s optimised binary
lookup, we employ a second build step that preprocesses certain .c files
and uses gperf to substitute pseudomacros with their respective constant
hash value.
Change-Id: Id89c4728a0fc7aa911691d4dd1ba8e7b3916a983