Re: [PATCH 07/12] libtool: Fix support for NIOS2 processor

[Mike Frysinger]

On 25 Oct 2021 15:33, Richard Purdie wrote:
> The name of the system contains the string "nios2". This string
> is caught by the some of the greedy checks for OS/2 in libtool,
> in particular the *os2* branches of switch statements match for
> the nios2 string, which results in incorrect behavior of libtool.
> 
> This patch adds an explicit check for *nios2* before the *os2*
> checks to prevent the OS/2 check incorrectly trapping the nios2
> as well.

i don't think this is the right approach.  this is adding another substring
search across the entire space (cpu/vendor/os).  we should fix the search so
it uses the right value only to match against.

> --- a/build-aux/ltmain.in
> +++ b/build-aux/ltmain.in
>
>      case $host in
> +      # For NIOS2, we want to make sure that it's not caught by the
> +      # more general OS/2 check below. Otherwise, NIOS2 is the same
> +      # as the default option.
> +      *nios2*)
> +        opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps
> +        ;;
>        # Solaris2 added to fix 
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16452
>        # see also: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59788
>        *cygwin* | *mingw* | *pw32* | *cegcc* | *solaris2* | *os2*)

these should only match $host_os, and remove the leading glob at the same time.
same for the other changes in this patch.
-mike

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