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Merge pull request s-matyukevich#220 from gpiffault/lesson01-add-make…
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…-substitution-link

Add make substitution link
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@s-matyukevich
s-matyukevich authored Jan 12, 2021
2 parents 83ce425 + 949372d commit a26ead7
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2 changes: 1 addition & 1 deletion docs/lesson01/rpi-os.md
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Expand Up @@ -106,7 +106,7 @@ OBJ_FILES = $(C_FILES:$(SRC_DIR)/%.c=$(BUILD_DIR)/%_c.o)
OBJ_FILES += $(ASM_FILES:$(SRC_DIR)/%.S=$(BUILD_DIR)/%_s.o)
```

Here we are building an array of all object files (`OBJ_FILES`) created from the concatenation of both C and assembler source files.
Here we are building an array of all object files (`OBJ_FILES`) created from the concatenation of both C and assembler source files (see [Substitution References](https://www.gnu.org/software/make/manual/html_node/Substitution-Refs.html)).

```
DEP_FILES = $(OBJ_FILES:%.o=%.d)
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