Re: [PATCH 2/3] ltmain.in: Parse additional clang options

[Sam James]

Richard Purdie <richard.purdie@linuxfoundation.org> writes:

> clang uses -rtlib and --unwindlib to select proper compiler runtime in
> some cases. Therefore pass these options to linker when found in
> ldflags

Thanks, I was planning on sending this one too.

>
> * build-aux/ltmain.in: Handle clang linker options
> ---
>  build-aux/ltmain.in | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
> index 34784c8c..cf6dc13a 100644
> --- a/build-aux/ltmain.in
> +++ b/build-aux/ltmain.in
> @@ -5412,12 +5412,14 @@ func_mode_link ()
>        # -shared-libsan       Link with shared sanitizer runtimes (Clang)
>        # -static-libsan       Link with static sanitizer runtimes (Clang)
>        # -fuse-ld=*           Linker select flags for GCC
> +      # -rtlib=*             select c runtime lib with clang
> +      # --unwindlib=*        select unwinder library with clang
>        # -f{file|debug|macro}-prefix-map* needed for lto linking
>        # -Wa,*                Pass flags directly to the assembler
>        # -Werror, -Werror=*   Report (specified) warnings as errors
>        -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
>        
> -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
> -      
> -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
> +      
> -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*|-rtlib=*|--unwindlib=*|
>  \
>        -specs=*|-fsanitize=*|-fno-sanitize*|-shared-libsan|-static-libsan| \
>        -ffile-prefix-map*|-fdebug-prefix-map*|-fmacro-prefix-map*| \
>        -fdiagnostics-color*|-frecord-gcc-switches| \