Re: [Powertop] [PATCH] Optionally check for ncurses pkgconfig file.

On Tue, May 06, 2014 at 05:38:24PM -0700, Kok, Auke-jan H wrote:
> On Tue, May 6, 2014 at 12:53 AM, Sergey Senozhatsky
> <sergey.senozhatsky(a)gmail.com> wrote:
> > On (05/05/14 23:42), Auke Kok wrote:
> >> ---
> >>  configure.ac | 3 ++-
> >>  1 file changed, 2 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/configure.ac b/configure.ac
> >> index baa5faa..5a90fe3 100644
> >> --- a/configure.ac
> >> +++ b/configure.ac
> >> @@ -46,7 +46,8 @@ AC_FUNC_REALLOC
> >>  AC_FUNC_STRTOD
> >>  AC_CHECK_FUNCS([fdatasync getpagesize gettimeofday memmove memset mkdir munmap pow realpath regcomp select setlocale socket sqrt strcasecmp strchr strdup strerror strncasecmp strstr strtoul strtoull])
> >>
> >> -AC_SEARCH_LIBS([delwin], [ncursesw ncurses], [], AC_MSG_ERROR([ncurses is required but was not found]), [])
> >> +PKG_CHECK_MODULES([NCURSES], [ncurses], [LIBS="$LIBS $ncurses_LIBS"],
> >                                 ^^^^^^^^^
> >                                 [ncursesw ncurses]?

On my gentoo system (x86_64) with ncurses 5.9, after applying this patch,
-lncurses is linked, but not -lncursesw.

> 
> Good question, I actually do not know, and I don't have an ncurses
> pkgconfig around to see if that works.
> 
> Alexandra, can you see if this works with:
> 
> +PKG_CHECK_MODULES([NCURSES], [ncursesw ncurses], [LIBS="$LIBS $ncurses_LIBS"],

After hacking in this change, both -lncursesw and -lncurses are linked.

If I checkout the v2.5 tag, only -lncursesw is linked.

So, three different linking scenarios. Which one is "correct" for powertop?