29206cf0a4
This is for consistency with Clang, which always adds a CPU flag even if it's not specified in CFLAGS. This commit also adds some tests to make sure the Clang target-cpu matches the CPU property in the JSON files. This does have an effect on the generated binaries. The effect is very small though: on average just 0.2% increase in binary size, apparently because Cortex-M3 and Cortex-M4 are compiled a bit differently. However, when rebased on top of https://github.com/tinygo-org/tinygo/pull/2218 (minsize), the difference drops to -0.1% (a slight decrease on average).
17 строки
462 Б
JSON
17 строки
462 Б
JSON
{
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"inherits": ["avr"],
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"cpu": "atmega1284p",
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"build-tags": ["atmega1284p", "atmega"],
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"serial": "uart",
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"ldflags": [
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"-mmcu=avr51",
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"-Wl,--defsym=_bootloader_size=0",
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"-Wl,--defsym=_stack_size=512"
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],
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"linkerscript": "src/device/avr/atmega1284p.ld",
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"extra-files": [
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"targets/avr.S",
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"src/device/avr/atmega1284p.s"
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],
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"emulator": ["simavr", "-m", "atmega1284p", "-f", "20000000"]
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}
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