gcc: rename enablePlugin to enablePlugins#217978
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February 23, 2023 22:54
In 6812dd9 I mistakenly had the implication order reversed. This commit corrects that mistake. The original assertion (which is correct) was the following, which asserts that if you enable the GDB plugin, you must enable plugins generally (there is shared infrastructure): ``` assert enableGdbPlugin -> enablePlugin; ``` When the option name was changed to `disableGdbPlugin`, I incorrectly wrote: ``` assert disableGdbPlugin -> enablePlugin; ``` And then again incorrectly wrote: ``` assert disableGdbPlugin -> !enablePlugin; ``` This commit uses the correct equivalent for the first statement, which is the contrapositive: ``` assert !enablePlugin -> disableGdbPlugin; ```
This commit implements @SuperSandro2000's suggestion that `enablePlugins` is a better name for this option: #216237 (comment) This makes a lot of sense. The option does not enable one specific plugin, and in fact does not necessarily enable *all* plugins either. Rather, it enables the general infrastructure for gcc plugins. For example, you can combine `--enable-plugins` with `--disable-libcc1` (which is the GDB plugin).
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trofi
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Feb 24, 2023
| else ["--disable-multilib"]) | ||
| ++ lib.optional (!enableShared) "--disable-shared" | ||
| ++ lib.singleton (lib.enableFeature enablePlugin "plugin") | ||
| ++ lib.singleton (lib.enableFeature enablePlugins "plugin") |
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While gcc/gcc has only --enable-plugin m4 code contains both flags:
$ git grep plugin |& fgrep AC_ARG
config/gcc-plugin.m4: AC_ARG_ENABLE(plugin,
config/plugins.m4: AC_ARG_ENABLE([plugins],
It is really scary that enablePlugins enable not the one you expect from the name.
I find enablePlugin and enablePlugins equally non-descriptive for what it does. But at least enablePlugin matches the configure option. There are at least 3 things I know of that gcc has to do with plugins:
liblto_plugin.so:binutilslinker plugin- plugin API
libcc1plugin.so
I suggest picking something more distinctive across the 3. Maybe enablePluginApi? Or not do the rename at all.
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Yikes, I didn't know that there was an --enable-plugin in there.
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Description of changes
This commit implements @SuperSandro2000's suggestion that
enablePluginsis a better name for this option:#216237 (comment)
This makes a lot of sense. The option does not enable one specific plugin, and in fact does not necessarily enable all plugins either. Rather, it enables the general infrastructure for gcc plugins.
For example, you can combine
--enable-pluginswith--disable-libcc1(which is the GDB plugin).Cc: @trofi @SuperSandro2000
Things done
nix-instantiate -A stdenv)