87 lines
1.0 KiB
Markdown
87 lines
1.0 KiB
Markdown
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---
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title:
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- Making Makefiles
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author:
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- Malin
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theme:
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- Warsaw
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colortheme:
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- orchid
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---
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# Intro
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- input, process, output.
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- automatic idempotence
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- *Gotcha*: directories
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- This, that, and these
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***
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# Variables
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- From your shell.
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- New variables.
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- Filenames as variables.
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- *Gotcha*: no shell variables, only make!
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## Equality
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- Variables with '=', never ':='.
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- *Gotcha*: one shell per line.
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- Variables as shell output.
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***
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# Phonies, and the Problems with Lies
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- clean (common)
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- check (excellent)
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***
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## Non-Compiling Checks
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- `make` -n
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- *Gotcha*: shell output variables.
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***
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# The Fourth Sigil: `%`
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- Standard rules, e.g. ImageMagick, copying, et c.
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- *Gotcha*: intermediaries are deleted.
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***
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# Bling: make2graph
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- *Gotcha*: completely outdated.
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***
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# Inclusivity
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- `include dir/Makefile`
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- *Gotcha*: directory has not changed
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- `$(MAKEFILE_LIST)`
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# Special Commands
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- dirname
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- `DIR = test -d $(dirname $@) || mkdir $(dirname $@)`
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- patsubst
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- Wildcards (or not?)
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# Maintanance
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- backups
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- saving files
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