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littlekernel / lk

LK embedded kernel
MIT License
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Fix module.mk to use the correct include flag #308

Closed mark64 closed 2 years ago

mark64 commented 2 years ago

--include is not a real gcc flag. Maybe it exists for other compilers or I'm just bad at reading docs though.

Anyway, now that this uses the expected gcc flag, ccache works when added to this build system. Without this, ccache thinks there's multiple input files and refuses to cache results. Now, it works and has a great hit rate.

travisg commented 2 years ago

Oh! That's interesting. I've known about ccache and --include for a long time, but didn't realize it was an improper use of the switch. My guess is gcc just accepts both forms but ccache only matches against one of them. Will test and roll. Thanks!

travisg commented 2 years ago

Yah interesting! Gcc seems to understand both, but having --include and -include confuses ccache. Just using -include seems to do the trick. Thanks!