X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=configure.ac;h=ca711ad79be36c87c03fc1281084cc214b0338a7;hb=0f4ac97ffd64ada974285b893ca1a594a6f003ff;hp=a87efb1a2ae53d10c5793dd0262cb6165f5c624a;hpb=d22159d6bb91e8472eb621417df34d83e58373c0;p=urcu.git diff --git a/configure.ac b/configure.ac index a87efb1..ca711ad 100644 --- a/configure.ac +++ b/configure.ac @@ -8,7 +8,7 @@ AC_CANONICAL_TARGET AC_CANONICAL_HOST AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip]) AC_CONFIG_SRCDIR([urcu.h]) -AC_PROG_MKDIR_P +AM_PROG_MKDIR_P AC_CONFIG_MACRO_DIR([m4]) AC_CONFIG_HEADERS([config.h urcu/config.h]) @@ -56,7 +56,11 @@ AC_SUBST(ARCHTYPE) AC_SUBST(SUBARCHTYPE) [ -if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586"; then +#if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586"; then +#For now, using lock; addl compatibility mode even for i686, because the +#Pentium III is seen as a i686, but lacks mfence instruction. +#Only using fence for x86_64. +if test "x$ARCHTYPE" = "xx86" -a "x$target_cpu" != "xi386" -a "x$target_cpu" != "xi486" -a "x$target_cpu" != "xi586" -a "x$target_cpu" != "xi686"; then ] AC_DEFINE([CONFIG_URCU_HAVE_FENCE], [1]) [