diff options
Diffstat (limited to 'tool/m4/ruby_dtrace_available.m4')
| -rw-r--r-- | tool/m4/ruby_dtrace_available.m4 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tool/m4/ruby_dtrace_available.m4 b/tool/m4/ruby_dtrace_available.m4 new file mode 100644 index 0000000000..9237b3535f --- /dev/null +++ b/tool/m4/ruby_dtrace_available.m4 @@ -0,0 +1,19 @@ +AC_DEFUN([RUBY_DTRACE_AVAILABLE], +[AC_CACHE_CHECK(whether dtrace USDT is available, rb_cv_dtrace_available, +[ + echo "provider conftest{ probe fire(); };" > conftest_provider.d + rb_cv_dtrace_available=no + AS_FOR(opt, rb_dtrace_opt, ["-xnolibs" ""], [dnl + AS_IF([$DTRACE opt -h -o conftest_provider.h -s conftest_provider.d >/dev/null 2>/dev/null], + [], [continue]) + AC_TRY_COMPILE([@%:@include "conftest_provider.h"], [CONFTEST_FIRE();], + [], [continue]) + # DTrace is available on the system + rb_cv_dtrace_available=yes${rb_dtrace_opt:+"(opt)"} + break + ]) + rm -f conftest.[co] conftest_provider.[dho] +]) +AS_CASE(["$rb_cv_dtrace_available"], ["yes("*")"], + [DTRACE_OPT=`expr "$rb_cv_dtrace_available" : "yes(\(.*\))"`]) +])dnl |