[PATCH] elf32-nds32: Don't define fls if it is provided by the system

[Alan Modra]

On Thu, Sep 20, 2018 at 08:22:59PM +0000, Simon Marchi wrote:
> The fls function already exists on macOS and FreeBSD (and probably others),
> leading to this error:
> 
> /Users/simark/src/binutils-gdb/bfd/elf32-nds32.c:5074:1: error: static declaration of 'fls' follows non-static declaration
> fls (register unsigned int x)
> ^
> /usr/include/strings.h:87:6: note: previous declaration is here
> int      fls(int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
>          ^
> 
> Add a configure-time check for it, and only define it if the system doesn't
> provide it.
> 
> bfd/ChangeLog:
> 
> 	* configure.ac: Check for fls.
> 	* elf32-nds32.c (fls): Only define if !HAVE_FLS.
> 	* config.in: Re-generate.
> 	* configure: Re-generate.

OK.

-- 
Alan Modra
Australia Development Lab, IBM