Comments (3)
Hi @hexeguitar, are you sure it's .S
(uppercase), not .s
? If so, please provide a minimal project to reproduce the issue.
from platform-espressif32.
Oh, you're right. My files had lowercase extension. With uppercase all works fine.
Interestingly, the lowercase "s" files are also getting picked up by the asm compiler, yet always with the wrong flag. This happens on Linux and Windows.
To test it even an empty testasm.s
file in the project triggers it, pio run -v
output:
No dependencies
Building in release mode
xtensa-esp32s3-elf-as -mlongcalls -o .pio/build/esp32dev/src/testasm.s.o src/testasm.s
xtensa-esp32s3-elf-as: unrecognized option '-mlongcalls'
from platform-espressif32.
The problem here is that IDF's build system used behind the scene doesn't provide default assembly flags as they always run both .S
and .s
(assembly with and without preprocessing respectively) through generic compiler. Their approach differs a bit from ours, so I've pushed a small fix to the dev branch, so that the build environment for the .s
files won't contain any build flags by default. It means that you will need to set raw assembly flags via an extra script run in pre:
mode, for example:
[env:esp32dev]
platform = espressif32
framework = espidf
board = esp32dev
extra_scripts =
pre:add_asmflags.py
add_asmflags.py
:
Import ("env")
env.Append(
ASFLAGS=["--longcalls"]
)
from platform-espressif32.
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