[FFmpeg-cvslog] avcodec/x86/Makefile: Don't build empty files

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Mon Sep 12 17:00:06 2022 +0200| [262e7439c6d58564d21ffffb05ade84bac4482ef] | committer: Andreas Rheinhardt

avcodec/x86/Makefile: Don't build empty files

simple_idct.asm is 32 bit-only since
bfb28b5ce89f3e950214b67ea95b45e3355c2caf,
whereas simple_idct10.asm is x64-only. So don't build
the ultimately unneeded and empty files, as some linkers
complain about this: "ranlib: file:
libavcodec/libavcodec.a(simple_idct.o) has no symbols"
(this is from an Xcode toolchain as reported by Ronald S. Bultje).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=262e7439c6d58564d21ffffb05ade84bac4482ef
---

 libavcodec/x86/Makefile | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index 6f62878081..118daca333 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -138,8 +138,11 @@ X86ASM-OBJS-$(CONFIG_QPELDSP)          += x86/qpeldsp.o                 \
 X86ASM-OBJS-$(CONFIG_RV34DSP)          += x86/rv34dsp.o
 X86ASM-OBJS-$(CONFIG_VC1DSP)           += x86/vc1dsp_loopfilter.o       \
                                           x86/vc1dsp_mc.o
-X86ASM-OBJS-$(CONFIG_IDCTDSP)          += x86/simple_idct10.o           \
-                                          x86/simple_idct.o
+ifdef ARCH_X86_64
+X86ASM-OBJS-$(CONFIG_IDCTDSP)          += x86/simple_idct10.o
+else
+X86ASM-OBJS-$(CONFIG_IDCTDSP)          += x86/simple_idct.o
+endif
 X86ASM-OBJS-$(CONFIG_VIDEODSP)         += x86/videodsp.o
 X86ASM-OBJS-$(CONFIG_VP3DSP)           += x86/vp3dsp.o
 X86ASM-OBJS-$(CONFIG_VP8DSP)           += x86/vp8dsp.o                  \