[OEL 6.5] dwarf.c:581: undefined reference to `dwarf_loclist' issue

[miloluo]

Hi, guys When I install dtrace4linux on Oracle Enterprise Linux 6.5 64bit. I met this problem when using "make all":

---

../../build/ctfconvert.obj/dwarf.o: In function die_mem_offset': /sw/dtrace-20140420/cmd/ctfconvert/dwarf.c:581: undefined reference todwarf_loclist' collect2: ld returned 1 exit status make[3]: * [../../build/ctfconvert] Error 1 make[2]: * [all] Error 2 make[1]: * [do_cmds] Error 2 tools/bug.sh make: * [all] Error 1

---

More log with this please check here: http://justpaste.it/ffw2

I also notice that there is a link with this arch linux: [Arch Linux] Compile error: undefined reference to `dwarf_loclist' #58 https://github.com/dtrace4linux/linux/issues/58

And I also tried "make -i all", it turn out to be a error there:

---

Executing: /sw/dtrace-20140420/tools/make-me ERROR: /lib/modules/3.8.13-26.el6uek.x86_64/build does not exist. make[1]: [kernel] Error 1 (ignored) tools/mkdriver.pl driver-2 all symlink ../../driver-2/Makefile build-3.8.13-26.el6uek.x86_64/driver-2/Makefile symlink ../../driver-2/hworld.c build-3.8.13-26.el6uek.x86_64/driver-2/hworld.c Executing: /sw/dtrace-20140420/tools/make-me ERROR: /lib/modules/3.8.13-26.el6uek.x86_64/build does not exist. make[1]: [kernel] Error 1 (ignored) tools/mkctf.sh build/ctfconvert not available - so not building the linux.ctf file NOTE: The build is complete, but build/ctfconvert is not available. This means you will get run time errors from the io.d and sched.d files due to undefined kernel structure definitions. Simply delete or rename these files until a fix can be put in place to handle older distros which do not have the required libdwarf dependencies.

  (Typical error is references to undefined struct definitions such
  as dtrace_cpu_t).

sync

---

More detailed log on : http://justpaste.it/ffw4

Could you guys help me with this? Thanks very much.

[dtrace4linux]

Why are you using dtrace4linux on oel? On 13 May 2014 02:44, "miloluo" notifications@github.com wrote:

Hi, guys When I install dtrace4linux on Oracle Enterprise Linux 6.5 64bit.

I met this problem when using "make all":

../../build/ctfconvert.obj/dwarf.o: In function die_mem_offset': /sw/dtrace-20140420/cmd/ctfconvert/dwarf.c:581: undefined reference to dwarf_loclist' collect2: ld returned 1 exit status make[3]: * [../../build/ctfconvert] Error 1 make[2]: * [all] Error 2 make[1]: *\ [do_cmds] Error 2 tools/bug.sh

make: *\ [all] Error 1

More log with this please check here: http://justpaste.it/ffw2

I also notice that there is a link with this arch linux: [Arch Linux] Compile error: undefined reference to `dwarf_loclist' #58https://github.com/dtrace4linux/linux/issues/58

58 https://github.com/dtrace4linux/linux/issues/58

And I also tried "make -i all", it turn out to be a error there:

Executing: /sw/dtrace-20140420/tools/make-me ERROR: /lib/modules/3.8.13-26.el6uek.x86_64/build does not exist. make[1]: [kernel] Error 1 (ignored) tools/mkdriver.pl driver-2 all symlink ../../driver-2/Makefile build-3.8.13-26.el6uek.x86_64/driver-2/Makefile symlink ../../driver-2/hworld.c build-3.8.13-26.el6uek.x86_64/driver-2/hworld.c Executing: /sw/dtrace-20140420/tools/make-me ERROR: /lib/modules/3.8.13-26.el6uek.x86_64/build does not exist. make[1]: [kernel] Error 1 (ignored) tools/mkctf.sh build/ctfconvert not available - so not building the linux.ctf file NOTE: The build is complete, but build/ctfconvert is not available. This means you will get run time errors from the io.d and sched.d files due to undefined kernel structure definitions. Simply delete or rename these files until a fix can be put in place to handle older distros which do not have the required libdwarf dependencies.

(Typical error is references to undefined struct definitions such as dtrace_cpu_t).

sync

More detailed log on : http://justpaste.it/ffw4

Could you guys help me with this? Thanks very much.

— Reply to this email directly or view it on GitHubhttps://github.com/dtrace4linux/linux/issues/83 .

[miloluo]

Because I don't have OEL's ULN for dtrace installation. So I turn to here. So dtrace4linux doesn't support OEL? I thought it was a redhat fedora branch linux. Thanks very much.

[IvanMamontov]

Any updates? I am trying to build dtrace on OEL too and I have the same problem.

[dtrace4linux]

Why are you trying to install dtrace4linux on Oracle linux? They have their own dtrace.

On 27 August 2014 07:12, Ivan Mamontov notifications@github.com wrote:

Any updates? I am trying to build dtrace on OEL too and I have the same problem.

— Reply to this email directly or view it on GitHub https://github.com/dtrace4linux/linux/issues/83#issuecomment-53530432.

[IvanMamontov]

Oracle Public Yum does not provide dtrace repositories for free http://docs.oracle.com/cd/E52668_01/E53499/html/ol7-install.html So in order to get oracle own dtrace I have to pay about $800.

[dtrace4linux]

Ok, next suggestion: can you avoid using OEL?

I havent tried to build dtrace4linux on OEL because its there. I thought they even published their own source code. If OEL doesnt make it available, then I could grab a copy of OEL and validate dtrace4linux works.

On 27 August 2014 10:13, Ivan Mamontov notifications@github.com wrote:

Oracle Public Yum does not provide dtrace repositories for free http://docs.oracle.com/cd/E52668_01/E53499/html/ol7-install.html So in order to get oracle own dtrace I have to pay about $800.

— Reply to this email directly or view it on GitHub https://github.com/dtrace4linux/linux/issues/83#issuecomment-53544663.

[luan-cestari]

I also got his problem on fedora 20 -> ../../build/ctfconvert.obj/dwarf.o: In function die_mem_offset': /home/lcestari/repositories/linux/cmd/ctfconvert/dwarf.c:581: undefined reference todwarf_loclist' collect2: error: ld returned 1 exit status make[3]: * [../../build/ctfconvert] Error 1 make[2]: * [all] Error 2 make[1]: *\ [do_cmds] Error 2 tools/bug.sh

[dtrace4linux]

You have libdwarf installed but you need to install libdw. Or, you have libdw installed but you need to install libdwarf.

You may think the above is crazy, and that is the very sad state of the DWARF debug libraries.

On 19 September 2014 19:21, luan-cestari notifications@github.com wrote:

I also got his problem on fedora 20 -> ../../build/ctfconvert.obj/dwarf.o: In function die_mem_offset': /home/lcestari/repositories/linux/cmd/ctfconvert/dwarf.c:581: undefined reference todwarf_loclist' collect2: error: ld returned 1 exit status make[3]: * [../../build/ctfconvert] Error 1 make[2]: * [all] Error 2 make[1]: *\ [do_cmds] Error 2 tools/bug.sh

— Reply to this email directly or view it on GitHub https://github.com/dtrace4linux/linux/issues/83#issuecomment-56214985.

[luan-cestari]

Thank you very much for the helping me =) I think I have both libs: [lcestari@localhost linux]$ sudo yum install elfutils-libs Loaded plugins: auto-update-debuginfo, langpacks, refresh-packagekit Package elfutils-libs-0.160-1.fc20.x86_64 already installed and latest version Nothing to do [lcestari@localhost linux]$ sudo yum install libdwarf Loaded plugins: auto-update-debuginfo, langpacks, refresh-packagekit Package libdwarf-20140131-2.fc20.x86_64 already installed and latest version Nothing to do (not 100% for libdw but in http://rpm.pbone.net/index.php3/stat/3/srodzaj/1/search/libdw.so.1()(64bit) claims it would be in elfutils-libs ). very weird, isnt it?

[dtrace4linux]

can you send me the output from

make clean ; make all

thanks

Its picking up the wrong one, given both - or maybe neither support dwarf_loclist. You can mostly ignore the error and just do

make -i all

that should give you a working dtracedrv.ko which can be loaded in the kernel.

On 20 September 2014 12:52, luan-cestari notifications@github.com wrote:

Thank you very much for the helping me =) I think I have both libs: [lcestari@localhost linux]$ sudo yum install elfutils-libs Loaded plugins: auto-update-debuginfo, langpacks, refresh-packagekit Package elfutils-libs-0.160-1.fc20.x86_64 already installed and latest version Nothing to do [lcestari@localhost linux]$ sudo yum install libdwarf Loaded plugins: auto-update-debuginfo, langpacks, refresh-packagekit Package libdwarf-20140131-2.fc20.x86_64 already installed and latest version Nothing to do (not 100% for libdw but in http://rpm.pbone.net/index.php3/stat/3/srodzaj/1/search/libdw.so.1()(64bit) claims it would be in elfutils-libs ). very weird, isnt it?

— Reply to this email directly or view it on GitHub https://github.com/dtrace4linux/linux/issues/83#issuecomment-56265801.

[luan-cestari]

The output is https://gist.github.com/luan-cestari/0e039c6ee2bc38b38afe

Running 'make -i all' I got a strange warning in end:

LD [M] /home/lcestari/repositories/linux/build-3.15.10-200.fc20.x86_64/driver-2/hworld.ko tools/mkctf.sh build/ctfconvert not available - so not building the linux.ctf file NOTE: The build is complete, but build/ctfconvert is not available. This means you will get run time errors from the io.d and sched.d files due to undefined kernel structure definitions. Simply delete or rename these files until a fix can be put in place to handle older distros which do not have the required libdwarf dependencies.

  (Typical error is references to undefined struct definitions such
  as dtrace_cpu_t).

Does that means I have to rename/remove $REPO/etc/sched.d , $REPO/libdtrace/sched.d and $REPO/etc/io.d ?

Also, I tried to run dtrace but it always show the command usage like I'm doing sth wrong, for example: dtrace -s d.d Usage /bin/dtrace [--help] [-h | -G] [-C [-I]] -s File.d [-o ]

Where d.d is the following: $ cat d.d callout_execute:::callout_start { self->cstart = timestamp; }

callout_execute:::callout_end {

    @length = quantize(timestamp - self->cstart);

}

Do I have to restart so my kernel will be able to load this new module?

[dtrace4linux]

You appear to be running oracles version of dtrace and not dtrace4linux. You need to avoid mixing them up.

On 20 September 2014 13:33, luan-cestari notifications@github.com wrote:

The output is https://gist.github.com/luan-cestari/0e039c6ee2bc38b38afe

Running 'make -i all' I got a strange warning in end:

LD [M] /home/lcestari/repositories/linux/build-3.15.10-200.fc20.x86_64/driver-2/hworld.ko tools/mkctf.sh build/ctfconvert not available - so not building the linux.ctf file NOTE: The build is complete, but build/ctfconvert is not available. This means you will get run time errors from the io.d and sched.d files due to undefined kernel structure definitions. Simply delete or rename these files until a fix can be put in place to handle older distros which do not have the required libdwarf dependencies.

(Typical error is references to undefined struct definitions such as dtrace_cpu_t).

Does that means I have to rename/remove $REPO/etc/sched.d , $REPO/libdtrace/sched.d and $REPO/etc/io.d ?

Also, I tried to run dtrace but it always show the command usage like I'm doing sth wrong, for example: dtrace -s d.d Usage /bin/dtrace [--help] [-h | -G] [-C [-I]] -s File.d [-o ]

Where d.d is the following: $ cat d.d callout_execute:::callout_start { self->cstart = timestamp; }

callout_execute:::callout_end {

@length = quantize(timestamp - self->cstart);

}

Do I have to restart so my kernel will be able to load this new module?

— Reply to this email directly or view it on GitHub https://github.com/dtrace4linux/linux/issues/83#issuecomment-56266660.

[kirantpatil]

Running on CentOS 6.5

it is not creating dtracedrv.ko if I do, "make -i all" and its snippet is below

/root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace.c:7801: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace.c: In function 'dtrace_ioctl': /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace.c:16599: error: request for member 'val' in something not a structure or union make[3]: [/root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace.o] Error 1 (ignored) CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_asm.o /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_asm.c: In function 'dtrace_copystr': /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_asm.c:197: warning: ignoring return value of 'copy_from_user', declared with attribute warn_unused_result CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_isa.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.o /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.c: In function 'priv_policy_only': /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.c:2447: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.c:2455: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.c:2459: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.c: In function 'dtracedrv_write': /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.c:2673: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.c:2674: error: request for member 'val' in something not a structure or union make[3]: [/root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.o] Error 1 (ignored) CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_subr.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dwarf.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/fasttrap.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/fasttrap_isa.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/fasttrap_linux.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/fbt_linux.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/instr_linux.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/instr_size.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/intr.o /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/intr.c: In function 'dtrace_write_idt_entry2': /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/intr.c:730: warning: unused variable 'vec' AS [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/intr_x86-32.o AS [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/intr_x86-64.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/libc.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/missing.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/mutex.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/printf.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/profile.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_common.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_proc.o /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_proc.c: In function 'psinfo_arg': /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_proc.c:34: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_proc.c:35: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_proc.c:36: error: request for member 'val' in something not a structure or union /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_proc.c:37: error: request for member 'val' in something not a structure or union make[3]: [/root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/prov_proc.o] Error 1 (ignored) CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/sdt_linux.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/sdt_subr.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/signal.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/systrace.o AS [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/systrace_asm.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/taskq.o In file included from include/linux/spinlock_types.h:18, from include/linux/spinlock.h:80, from include/linux/seqlock.h:29, from include/linux/time.h:8, from /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/../../linux/linux_types.h:77, from /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtrace_linux.h:29, from /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/taskq.c:35: include/linux/lockdep.h:345:1: warning: "lockdep_init_map" redefined /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/taskq.c:33:1: warning: this is the location of the previous definition CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/tcp.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/toxic.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/uncompress.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/vminfo.o /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/vminfo.c:46: warning: 'sdt_add_locator' defined but not used /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/vminfo.c:66: warning: 'vminfo_instr_callback' defined but not used CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/x_call.o /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/x_call.c:96:3: warning: #warning "NCPU is large - your module may not load (x_call.c)" CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/xen.o LD [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtracedrv.o ld: /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/ctl.o: No such file: No such file or directory make[3]: [/root/linux/build-2.6.32-431.29.2.el6.x86_64/driver/dtracedrv.o] Error 1 (ignored) Building modules, stage 2. MODPOST 0 modules tools/mkdriver.pl driver-2 all symlink ../../driver-2/Makefile build-2.6.32-431.29.2.el6.x86_64/driver-2/Makefile symlink ../../driver-2/hworld.c build-2.6.32-431.29.2.el6.x86_64/driver-2/hworld.c Executing: /root/linux/tools/make-me make -C /lib/modules/2.6.32-431.29.2.el6.x86_64/build M=/root/linux/build-2.6.32-431.29.2.el6.x86_64/driver-2 LD /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver-2/built-in.o CC [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver-2/hworld.o Building modules, stage 2. MODPOST 1 modules CC /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver-2/hworld.mod.o LD [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver-2/hworld.ko.unsigned NO SIGN [M] /root/linux/build-2.6.32-431.29.2.el6.x86_64/driver-2/hworld.ko tools/mkctf.sh build/ctfconvert not available - so not building the linux.ctf file NOTE: The build is complete, but build/ctfconvert is not available. This means you will get run time errors from the io.d and sched.d files due to undefined kernel structure definitions. Simply delete or rename these files until a fix can be put in place to handle older distros which do not have the required libdwarf dependencies.

  (Typical error is references to undefined struct definitions such
  as dtrace_cpu_t).

sync

[root@fractal-2590 linux]# make load tools/load.pl 05:28:57 Syncing... 05:28:57 Loading: build-2.6.32-431.29.2.el6.x86_64/driver/dtracedrv.ko insmod: can't read 'build-2.6.32-431.29.2.el6.x86_64/driver/dtracedrv.ko': No such file or directory /proc/dtrace does not exist. Maybe the driver didnt load properly. make: *\ [load] Error 1

[kirantpatil]

@dtrace4linux, any updates on this issue on how to resolve it ?

[luan-cestari]

Hi @dtrace4linux, how are you doing? Thank you for the reply (and sorry that I take too long to answer). I installed the oracle version by mistake =/ I tried to remove it but somehow it became the dependency of other libraries (I was quite sure it wasn't before), like, if I uninstall, I also got installed the: google-chrome-stable perl-CPAN perl-ExtUtils-Install perl-ExtUtils-MakeMaker perl-ExtUtils-ParseXS perl-devel redhat-lsb redhat-lsb-languages .I don't think there is a way to remove it right now but if you get any idea, I will be glad to listen and try =) (just to mention I already tried to remove them all and install this dependencies to see if it would sill require the oracle package but it always try to add it again =/)

[dtrace4linux]

Just remove the files that are installed. dtrace4linux doesnt install as a normal RPM type package. I think theres confusion about dtrace4linux and Oracles linux.

I tried to get a copy of OEL and failed - the oracle web site is too difficult to navigate.

On 16 October 2014 13:38, luan-cestari notifications@github.com wrote:

Hi @dtrace4linux https://github.com/dtrace4linux, how are you doing? Thank you for the reply (and sorry that I take too long to answer). I installed the oracle version by mistake =/ I tried to remove it but somehow it became the dependency of other libraries (I was quite sure it wasn't before), like, if I uninstall, I also got installed the: google-chrome-stable perl-CPAN perl-ExtUtils-Install perl-ExtUtils-MakeMaker perl-ExtUtils-ParseXS perl-devel redhat-lsb redhat-lsb-languages .I don't think there is a way to remove it right now but if you get any idea, I will be glad to listen and try =) (just to mention I already tried to remove them all and install this dependencies to see if it would sill require the oracle package but it always try to add it again =/)

— Reply to this email directly or view it on GitHub https://github.com/dtrace4linux/linux/issues/83#issuecomment-59354542.

[kim0]

I just failed to install on a fresh centos-7-x64 with the dwarf_loclist error .. Any hopes to get this fixed please?

[loganbruns]

@kim0, fwiw, this pull request fixes the CentOS 7 build for me.

[bolton1643]

i installed this on centos6.5 with kernal 2.6.32-431.el6.x86_64 . it ocurred "root.dwarf.c:(.text+0x1f): undefined reference to `dwarf_loclist'" when i make all. then i make clean && make all again , it passed. but when i make test, the system halted...

[idevz]

any update here ? I got this

tools/mkctf.sh
build/ctfconvert not available - so not building the linux.ctf file
NOTE: The build is complete, but build/ctfconvert is not available.
      This means you will get run time errors from the io.d and sched.d files
      due to undefined kernel structure definitions. Simply delete or rename
      these files until a fix can be put in place to handle older
      distros which do not have the required libdwarf dependencies.

      (Typical error is references to undefined struct definitions such
      as dtrace_cpu_t).

[dtrace4linux]

Dont install this on oel. Sorry that you are using oel but its not supported for them. They have their own dtrace

On 20 Dec 2016 14:02, "周晶" notifications@github.com wrote:

any update here ? I got this

tools/mkctf.sh build/ctfconvert not available - so not building the linux.ctf file NOTE: The build is complete, but build/ctfconvert is not available. This means you will get run time errors from the io.d and sched.d files due to undefined kernel structure definitions. Simply delete or rename these files until a fix can be put in place to handle older distros which do not have the required libdwarf dependencies.

  (Typical error is references to undefined struct definitions such
  as dtrace_cpu_t).

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[idevz]

@dtrace4linux Thanks for your reply, but I install this in my Centos Vm based parallels on my OSX, not an OEL.