Date: Mon, 2 Sep 2013 22:04:07 +0200 From: Dimitry Andric <dim@FreeBSD.org> To: Tijl Coosemans <tijl@freebsd.org> Cc: toolchain@FreeBSD.org Subject: Re: clang -fprofile-generate Message-ID: <C09B4DBB-8CDF-4C97-89E2-1144EAF4013A@FreeBSD.org> In-Reply-To: <20130902214024.2af1096d@kalimero.tijl.coosemans.org> References: <20130902214024.2af1096d@kalimero.tijl.coosemans.org>
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[-- Attachment #1 --] On Sep 2, 2013, at 21:40, Tijl Coosemans <tijl@freebsd.org> wrote: > I was trying to build multimedia/x264 using clang as follows: > In the Makefile remove USE_GCC=any. > In option dialog on leave PGO on. > > It ends in the following linker error: > > cc -o x264 x264.o input/input.o input/timecode.o input/raw.o input/y4m.o output/raw.o output/matroska.o output/matroska_ebml.o output/flv.o output/flv_bytestream.o filters/filters.o filters/video/video.o filters/video/source.o filters/video/internal.o filters/video/resize.o filters/video/cache.o filters/video/fix_vfr_pts.o filters/video/select_every.o filters/video/crop.o filters/video/depth.o input/thread.o libx264.a -m32 -fstack-protector -fstack-protector -L/usr/local/lib -lm -pthread -fprofile-generate > /usr/bin/ld: /usr/bin/../lib/libprofile_rt.a: No such file: No such file or directory > cc: error: linker command failed with exit code 1 (use -v to see invocation) > > Isn't libprofile_rt.a included with the base system llvm? Nope, not currently. Last time I tried building it, it didn't yet work properly. The library gets used in at link time, but I don't see where any entry point to it gets called. I did not have time yet to take a deeper look at it. For now, profile generation should be disabled for x264. -Dimitry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.20 (Darwin) iEYEARECAAYFAlIk70EACgkQsF6jCi4glqPAJgCfX0j0oPUBZ1D/dZz1KVFxMK6t z6kAn0dH8m0p95swHAAuiLvD7emsntwW =KuNm -----END PGP SIGNATURE-----
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