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Register --sysroot in the driver switches table

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This change adjusts the processing of --sysroot to save the option in the
internal "switches" array, which lets self-specs test for it and provide a
default value possibly dependent on environment variables, as in

  --with-specs=%{!-sysroot*:--sysroot=%:getenv("WIND_BASE" /target)}

2021-12-20  Olivier Hainque  <hainque@adacore.com>

gcc/
	* gcc.c (driver_handle_option): do_save --sysroot.
This commit is contained in:
Olivier Hainque 2021-12-20 17:47:24 +00:00
parent fbb592407c
commit 48e2d9b7b8
1 changed files with 3 additions and 1 deletions
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4
gcc/gcc.c
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@ -4492,7 +4492,9 @@ driver_handle_option (struct gcc_options *opts,
case OPT__sysroot_:
target_system_root = arg;
target_system_root_changed = 1;
do_save = false;
/* Saving this option is useful to let self-specs decide to
provide a default one. */
do_save = true;
break;
case OPT_time_: