else
CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
endif # dwarf_getlocations
+ ifneq ($(feature-dwarf_getcfi), 1)
+ msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.142);
+ else
+ CFLAGS += -DHAVE_DWARF_CFI_SUPPORT
+ endif # dwarf_getcfi
endif # Dwarf support
endif # libelf support
endif # NO_LIBELF
ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1);
if (ret <= 0 || nops == 0) {
pf->fb_ops = NULL;
-#if _ELFUTILS_PREREQ(0, 142)
+#ifdef HAVE_DWARF_CFI_SUPPORT
} else if (nops == 1 && pf->fb_ops[0].atom == DW_OP_call_frame_cfa &&
(pf->cfi_eh != NULL || pf->cfi_dbg != NULL)) {
if ((dwarf_cfi_addrframe(pf->cfi_eh, pf->addr, &frame) != 0 &&
free(frame);
return -ENOENT;
}
-#endif
+#endif /* HAVE_DWARF_CFI_SUPPORT */
}
/* Call finder's callback handler */
pf->machine = ehdr.e_machine;
-#if _ELFUTILS_PREREQ(0, 142)
+#ifdef HAVE_DWARF_CFI_SUPPORT
do {
GElf_Shdr shdr;
pf->cfi_dbg = dwarf_getcfi(dbg->dbg);
} while (0);
-#endif
+#endif /* HAVE_DWARF_CFI_SUPPORT */
ret = debuginfo__find_probe_location(dbg, pf);
return ret;