[PATCH 1/3] Makefile: clean auto-generated *.c files properly

[Ben Dooks <ben.dooks@codethink.co.uk>]

On 23/04/2024 15:58, Ivan Orlov wrote:
> On 4/22/24 16:19, Andrew Jones wrote:
>> On Mon, Apr 01, 2024 at 10:34:36PM +0100, Ivan Orlov wrote:
>>> Currently, `make clean` doesn't remove auto-generated .c files in the
>>> `build/` directory. It means that we don't have a reliable way of
>>> regenerating these files except from removing the `build/` directory
>>> manually.
>>>
>>> Update the `clean` target in order to remove these files as well.
>>>
>>> In the discussion of the "[PATCH v2 3/5] Makefile: clean '.c' files
>>> generated by carray", Andrew Jones <ajones@ventanamicro.com> suggested
>>> placing the auto-generated .c files into the `build/generated/` folder.
>>> However, I believe it may not be necessary as in fact all of the files
>>> in `build/` are auto-generated.
>>
>> Since the Makefile enforces that the build dir is not the same as the
>> source dir and the only C files we currently generate are carray files,
>> then OK. I still think it would be nice to be more specific about what
>> we clean, though.
>>
> 
> Hi Andrew,
> 
> Thank you very much for the review!
> 
> I see a few approaches how we could make the CArray-generated files 
> cleaning more clear. I believe we could either put all of the 
> CArray-generated files into a subdirectory of `build/` (as you 
> suggested) or add a suffix to a filename of an auto-generated .c file 
> (for instance, sbi_unit_tests.carray -> sbi_unit_tests_carray.c, and the 
> pattern for `make clean` would be like "rm -rf build/*_carray.c").
> 
> The former would probably need significant update of the Makefile. The 
> latter, on the other hand, seems more flaky... What do you think of that?

I did a quick shell command to find all the object basenames, via:

$ find . -type f -name "*.carray" | xargs grep NAME | cut -d ' ' -f 2
sbi_unit_tests
sbi_ecall_exts
fdt_irqchip_drivers
fdt_timer_drivers
fdt_serial_drivers
fdt_i2c_adapter_drivers
fdt_ipi_drivers
fdt_gpio_drivers
fdt_regmap_drivers
fdt_reset_drivers
platform_override_modules

so doing:

$ find . -type f -name "*.carray" | xargs grep NAME | cut -d ' ' -f 2 | 
sed  's/$/.o/g'  | xargs -n1 find build -name
build/lib/sbi/sbi_ecall_exts.o
build/platform/generic/lib/utils/irqchip/fdt_irqchip_drivers.o
build/platform/generic/lib/utils/timer/fdt_timer_drivers.o
build/platform/generic/lib/utils/serial/fdt_serial_drivers.o
build/platform/generic/lib/utils/i2c/fdt_i2c_adapter_drivers.o
build/platform/generic/lib/utils/ipi/fdt_ipi_drivers.o
build/platform/generic/lib/utils/gpio/fdt_gpio_drivers.o
build/platform/generic/lib/utils/regmap/fdt_regmap_drivers.o
build/platform/generic/lib/utils/reset/fdt_reset_drivers.o
build/platform/generic/platform_override_modules.o

finds all the carray build files

-- 
Ben Dooks				http://www.codethink.co.uk/
Senior Engineer				Codethink - Providing Genius

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