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Just add comment by: sed -i $'1i\\\n# -*- Autoconf -*-' tool/m4/*.m4 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61983 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
20 lines
769 B
Text
20 lines
769 B
Text
# -*- Autoconf -*-
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AC_DEFUN([RUBY_DTRACE_AVAILABLE],
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[AC_CACHE_CHECK(whether dtrace USDT is available, rb_cv_dtrace_available,
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[
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echo "provider conftest{ probe fire(); };" > conftest_provider.d
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rb_cv_dtrace_available=no
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AS_FOR(opt, rb_dtrace_opt, ["-xnolibs" ""], [dnl
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AS_IF([$DTRACE opt -h -o conftest_provider.h -s conftest_provider.d >/dev/null 2>/dev/null],
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[], [continue])
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AC_TRY_COMPILE([@%:@include "conftest_provider.h"], [CONFTEST_FIRE();],
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[], [continue])
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# DTrace is available on the system
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rb_cv_dtrace_available=yes${rb_dtrace_opt:+"(opt)"}
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break
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])
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rm -f conftest.[co] conftest_provider.[dho]
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])
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AS_CASE(["$rb_cv_dtrace_available"], ["yes("*")"],
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[DTRACE_OPT=`expr "$rb_cv_dtrace_available" : "yes(\(.*\))"`])
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])dnl
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