perf build: Fix compiler errors with old capstone

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It seems RISCV was added in capstone version 5 (released Jul 2023).
Unfortunately they are enum constants so cannot check with #ifdef but
anyway we can define the symbols.  Let's do it using the version
number to avoid build errors.  It'll fail at runtime though.

  util/capstone.c: In function 'e_machine_to_capstone':
  util/capstone.c:186:25: error: 'CS_ARCH_RISCV' undeclared (first use in this function);
                                  did you mean 'CS_ARCH_SYSZ'?
    186 |                 *arch = CS_ARCH_RISCV;
        |                         ^~~~~~~~~~~~~
        |                         CS_ARCH_SYSZ
  util/capstone.c:186:25: note: each undeclared identifier is reported only once for each function it appears in

  util/capstone.c:187:34: error: 'CS_MODE_RISCV64' undeclared (first use in this function);
                                  did you mean 'CS_MODE_MIPS64'?
    187 |                 *mode |= (is64 ? CS_MODE_RISCV64 : CS_MODE_RISCV32) | CS_MODE_RISCVC;
        |                                  ^~~~~~~~~~~~~~~
        |                                  CS_MODE_MIPS64

Also note that capstone renamed CS_MODE_RISCVC to CS_MODE_RISCV_C which
would cause a different build failure on latest versions.  It's reported
in https://github.com/capstone-engine/capstone/issues/2977 so I think
they will add compatibility layer to prevent the error.

Fixes: 12c4737f55 ("perf capstone: Determine architecture from e_machine")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

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Namhyung Kim 2026-07-06 16:48:35 -07:00

parent 5bc1647216

commit e01c7bd5b1

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tools/perf/util/capstone.c

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