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Also adding `-specs=nano.specs` to link flags when it's included in compile flags so expected and actual specs line up.
Zob314
commented
Oct 3, 2025
| "-lc", | ||
| "-lstdc++", | ||
| "-lnosys", | ||
| "-specs=nano.specs", |
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I noticed from the map files that this was not being included in the link flags, despite it being included in the compiler flags. This was causing the final binary to use much more flash than necessary.
Zob314
commented
Oct 3, 2025
| flag_groups = [ | ||
| flag_group( | ||
| flags = [ | ||
| "-Wl,-Map=%{output_execpath}.map", # if is_linux else "-Wl,-map,%{output_execpath}.map", |
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Commented section is from the upstream linkmap PR. Evidently Linux requires a capital M, and macOS requires a lower case m. But in the upstream commit it seems to be based on the target system, so maybe all versions of arm-none-eabi-gcc use the capital M?
I figured I'd leave the extra code here as a hint for people who run into issues.
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Add support for generate_linkmap feature for gcc.
Also add
-specs=nano.specsto link flags when it's included in compile flags so expected and actual specs line up.