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Update old post about using C headers in ASM

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Thomas Lovén 2016-11-01 14:19:02 +01:00
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pages/2012-06-18-C-Headers-In-Asm.md
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@ -3,6 +3,18 @@ title: "C headers in Asm"
subtitle: "Cleaning up the build chain" subtitle: "Cleaning up the build chain"
tags: [osdev] tags: [osdev]
> **NOTE (2016-11-01)**
>
> Since people are apparently still finding this page four years later (yay! Cool URLs don't change!): I've since found a better and more correct way of doing this.
>
> If you're compiling using `gcc`, you can just name your assembly files (with includes and macros and stuff) `whatever.S` (capital S), and compile them right down to `whatever.o` as you normally would (using `gcc`, not `as`).
>
> GNU make also has a builtin rule that does this automatically... yeah...
>
> From this I've learned the following
> - Trust make. It's terribly powerful if you trust it to be.
> - GCC is not the GNU C Compiler. It's the GNU Compiler Collection.
Something that always annoyed me is how hard it is to synchronize constants Something that always annoyed me is how hard it is to synchronize constants
between assembly and c code. In assembler, you define a constant value as between assembly and c code. In assembler, you define a constant value as