On 2014-10-27 19:20:32 +0100, Janne Grunau wrote: > --- > configure.ac | 2 ++ > src/erasure-code/jerasure/Makefile.am | 4 ++++ > src/test/erasure-code/Makefile.am | 4 ++++ > 3 files changed, 10 insertions(+) > > diff --git a/configure.ac b/configure.ac > index 7a0691d..d994712 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -539,6 +539,8 @@ AC_LANG_POP([C++]) > > # Find supported SIMD / SSE extensions supported by the compiler > AX_INTEL_FEATURES() > +AM_CONDITIONAL(HAVE_SSSE3, [ test "x$ax_cv_support_ssse3_ext" = "xyes"]) > +AM_CONDITIONAL(HAVE_SSE4_PCLMUL, [ test "x$ax_cv_support_pclmuldq_ext" = "xyes"]) > > # kinetic osd backend? > AC_ARG_WITH([kinetic], > diff --git a/src/erasure-code/jerasure/Makefile.am b/src/erasure-code/jerasure/Makefile.am > index 86763af..142c612 100644 > --- a/src/erasure-code/jerasure/Makefile.am > +++ b/src/erasure-code/jerasure/Makefile.am > @@ -71,7 +71,9 @@ if LINUX > libec_jerasure_sse3_la_LDFLAGS += -export-symbols-regex '.*__erasure_code_.*' > endif > > +if HAVE_SSSE3 > erasure_codelib_LTLIBRARIES += libec_jerasure_sse3.la > +endif I just realised that this is not exactly safe. While libec_jerasure_sse3 won't have useful code if HAVE_SSSE3 is not defined, the runtime detection in ErasureCodePluginSelectJerasure.cc can still return "sse3". That would fail since the sse3 libec_jerasure plugin is not built. I'll send an updated patch which avoids this problem later. Janne -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
