[PATCH] fix race when building ada-lex.c

[Simon Marchi]

On 2018-04-28 17:13, John Reiser wrote:
> PR build/22873
> Prevent a race when building ada-lex.c, and any target of rules .c:.l 
> or .c:.y.
> The target should be written only at the last step, else SIGINT (^C)
> can leave an inconsistent state.  Being .PRECIOUS makes it even worse.
> 
> gdb/ChangeLog:
>         * gdb/Makefile.in: (.c:.l, .c:.y): Write the target only in the
>         last step, and do it atomically.
> 
> [patch attached]

Hi John,

Thanks for the patch, it makes sense.  I pushed it.

Simon