Keep frame pointers if using gcc frame intrinsics.
Specify -fno-omit-frame-pointer when using __builtin_frame_address() and __builtin_return_address() for backtracing. This fixes backtracing failures on e.g. i686 for optimized builds.
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@ -784,6 +784,7 @@ fi
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)
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if test "x$backtrace_method" = "x" -a "x$enable_prof_gcc" = "x1" \
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-a "x$GCC" = "xyes" ; then
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JE_CFLAGS_APPEND([-fno-omit-frame-pointer])
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backtrace_method="gcc intrinsics"
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AC_DEFINE([JEMALLOC_PROF_GCC], [ ])
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else
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