12568 |
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12569 |
@sp 1 |
@sp 1 |
12570 |
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12571 |
In Autoconf, the variables @code{build}, @code{host}, and @code{target} |
In Autoconf 2.13 and before, the variables @code{build}, @code{host}, |
12572 |
had a different semantics before and after the invocation of |
and @code{target} had a different semantics before and after the |
12573 |
@code{AC_CANONICAL_BUILD} etc. Now, the argument of @option{--build} is |
invocation of @code{AC_CANONICAL_BUILD} etc. Now, the argument of |
12574 |
strictly copied into @code{build_alias}, and is left empty otherwise. |
@option{--build} is strictly copied into @code{build_alias}, and is left |
12575 |
After the @code{AC_CANONICAL_BUILD}, @code{build} is set to the |
empty otherwise. After the @code{AC_CANONICAL_BUILD}, @code{build} is |
12576 |
canonicalized build type. To ease the transition, before, its contents |
set to the canonicalized build type. To ease the transition, before, |
12577 |
is the same as that of @code{build_alias}. Do @emph{not} rely on this |
its contents is the same as that of @code{build_alias}. Do @emph{not} |
12578 |
broken feature. |
rely on this broken feature. |
12579 |
|
|
12580 |
For consistency with the backward compatibility scheme exposed above, |
For consistency with the backward compatibility scheme exposed above, |
12581 |
when @option{--host} is specified by @option{--build} isn't, the build |
when @option{--host} is specified by @option{--build} isn't, the build |