Do not set 'OPENOCD_EXTRA_INIT' but rely on
'openocd/openocd-adapters/dap.inc.mk' to select the adapter.
Using 'OPENOCD_EXTRA_INIT' for this was deprecated.
When 'DEBUG_ADAPTER_ID' was set it was already the case but not with
'SERIAL'.
The compatibility with using 'SERIAL' is maintained.
Use the -gz option to compress ELF sections containing DWARF information.
This saves around 50% of disk space, without any side effects.
See https://gcc.gnu.org/onlinedocs/gcc-9.2.0/gcc/Debugging-Options.html#Debugging-Options
for more infomation on this option.
Some platforms have an outdated toolchain that does not support -gz so
the flag is blacklisted there. Even then, the results are quite impressive.
I used @cladmi's `buildtest` branch (https://github.com/cladmi/RIOT/tree/wip/du/buildtest)
with this change and compiled the `examples/default` application:
```
$ BUILD_IN_DOCKER=1 DOCKER="sudo docker" make -C examples/default buildtest-indocker
```
The size was obtained with:
```
$ find output -name "*.bin.bindirsize" -type f -exec tail -n1 '{}' \; | cut -f 1 | awk '{s+=$1} END {printf "%.0f", s}'
```
Results:
- Vanilla: 10328112 KB (~10GB).
- with -gz: 4982788 KB (~5GB).
This was inspired by #8496.
The warning issued when the PID and VID are set to the default values should
not be printed on `make clean` and other targets, only with `make all` and it
should be a proper target.
To do: replace shell echos with proper $(warning ..) calls.
The current code for detecting whether colors should be used by default
was not working. Normally what programs such as git or grep do is check
if they are writing to a pipe.
To see the issue by yourself:
$ BOARD=samr21-xpro make -C tests/periph_qdec > I_SHOULD_NOT_HAVE_COLORS 2>&1
This commit uses MAKE_TERMOUT, MAKE_TERMERR and if ANY of them is NOT
a terminal, colors are disabled.
Update the optional flags to use 'OPTIONAL_CFLAGS' instead of evaluating
everytime.
They are now blacklisted by architecture/toolchain according to the
current docker reference image.
Handle declaring OPTIONAL_CFLAGS and blacklisting them with
OPTIONAL_CFLAGS_BLACKLIST.
This should replace checking everytime if options are supported.
_exti() always assumes only 2 ports, so it will always fail when using
e.g. port C or port D on same54.
Instead, determine the number of ports from the dimensions of the exti_config
array.
Add make only function to convert strings to lowercase and uppercase.
This can replace the `$(shell echo $(var) | tr 'a-z-' 'A-Z_')` pattern.
Using the 'make' implementation results in being around 100 times faster.
