Use fixed variables for things that can't change, instead of variables
like SRCLIBDIR that was causing a shell call for every single use.
Use less functions in general and less shell expansions.
Use builtin functions like $(realpath blah) instead of $(shell
pwd)/blah In particular, this was important for me trying to build on
windows with git-shell. This should help a lot on smaller build
machines, but doesn't make a huge difference on my own.
Remove redundant clean print messages. These also cause more needless
shell expansions.
the "make clean" target showed a constant "stm32/f1" debug message
instead of the current relative directory. this is fixed by showing the
relevant portion of the current directory instead, relevant being
determined by evaluating the current makefile's relative position and
stripping that part off.
vector.o, nvic.o, scb.o and assert.o are available on every platform,
but at least some of them differ between the implementations. they
already got built explicityly on some platforms; now adding them to the
common Makefile.include.
Add object files to Makefile to include new modules into lib.
Correct typo in pwr.c
Add two new functions to timer.c to preset the counter (for use
with deadman style timeouts) and to identify an interrupt
source.
Also noticed lib/makefile.include didn't clean lib/stm32, which
isn't a target. Added a fix.
- The library files are now being built into the lib subdirectory of the
source.
- The linker files for each library are being copied into the lib source
subdirectory.
Motivation: The relative locations of files in the source directory after make
are now the same as after make install now. This makes it easier to
reuse examples with their makefiles outside of the libopencm3
sourcecode directory.
