Bug#842513: vlc: immediate crash on launch on powerpc

[Lennart Sorensen]

On Tue, Nov 01, 2016 at 01:42:17PM -0400, Lennart Sorensen wrote:
> Well that looks like it only adds it for libvlccore.

So at least something like this is needed, but I think the VLCCORE is
wrong too, and maybe the deinterlace has to be moved to only merge.c
rather than all of deinterlace.

--- configure.ac.orig   2016-11-03 13:56:25.826878272 -0400
+++ configure.ac        2016-11-03 13:56:55.558878272 -0400
@@ -1431,7 +1431,6 @@
       ac_cv_c_altivec="no"
     ])
   ])
-  VLC_RESTORE_FLAGS
   AS_IF([test "${ac_cv_c_altivec}" != "no"], [
     CPPFLAGS="${CPPFLAGS} ${ac_cv_c_altivec}"
     AC_DEFINE(CAN_COMPILE_C_ALTIVEC, 1, [Define to 1 if C AltiVec extensions are available.])
@@ -1441,6 +1440,7 @@
     have_altivec="yes"
   ])
   AC_CHECK_HEADERS(altivec.h)
+  VLC_RESTORE_FLAGS
 
   VLC_SAVE_FLAGS
   LDFLAGS="${LDFLAGS} -Wl,-framework,vecLib"

The CPPFLAGS are being clobbered with the -maltivec, which is only needed
when testing altivec.h, and should be removed again after that.

That removes the -maltivec that was showing up everywhere at least, and
now it is only in a few places, although perhaps still a few too many.

-- 
Len Sorensen