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Merge bitcoin/bitcoin#27458: build: Detect USDT the same way how it is used in the code

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b53cab0083 build: Detect USDT the same way how it is used in the code (Hennadii Stepanov)

Pull request description:

  In the code we do not use string literals.

  Also a check for `DTRACE_PROBE7` macro has been added as not all systems define`DTRACE_PROBE{6,7,8,9,10,11,12}` macros (e.g., FreeBSD).

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fanquake 2023-05-19 10:03:26 +01:00
commit 2f1403ae53
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4
configure.ac
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@ -1409,7 +1409,9 @@ if test "$use_usdt" != "no"; then
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM(
[#include <sys/sdt.h>],
[DTRACE_PROBE("context", "event");]
[DTRACE_PROBE(context, event);
int a, b, c, d, e, f, g;
DTRACE_PROBE7(context, event, a, b, c, d, e, f, g);]
)],
[AC_MSG_RESULT([yes]); AC_DEFINE([ENABLE_TRACING], [1], [Define to 1 to enable tracepoints for Userspace, Statically Defined Tracing])],
[AC_MSG_RESULT([no]); use_usdt=no;]