[build error] ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'

[build error] ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'

[Douglas Mencken]

I'm trying to build guile-v2.0.1-53-g8f6a4b2, and got the following errors:

  CC       guile-guile.o
  CCLD     guile
./.libs/libguile-2.0.so: warning: the use of `tmpnam' is dangerous,
better use `mkstemp'
./.libs/libguile-2.0.so: warning: gethostbyaddr is obsolescent, use
getaddrinfo() instead.
./.libs/libguile-2.0.so: warning: gethostbyname is obsolescent, use
getnameinfo() instead.
./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'
collect2: ld returned 1 exit status
make[3]: *** [guile] Error 1

with make V=1:

Making all in libguile
make[2]: Entering directory
`/root/build-farm/guile-v2.0.1-53-g8f6a4b2.builddir/libguile'
make  all-am
make[3]: Entering directory
`/root/build-farm/guile-v2.0.1-53-g8f6a4b2.builddir/libguile'
/bin/bash ../libtool  --tag=CC   --mode=link
powerpc-gnu-linux-uclibc-gcc -pthread -Wall -Wmissing-prototypes
-Wdeclaration-after-statement -Wswitch-enum -fvisibility=hidden -g -O2
-pthread  -o guile guile-guile.o libguile-2.0.la -lcrypt -lm
libtool: link: powerpc-gnu-linux-uclibc-gcc -pthread -Wall
-Wmissing-prototypes -Wdeclaration-after-statement -Wswitch-enum
-fvisibility=hidden -g -O2 -pthread -o .libs/guile guile-guile.o
./.libs/libguile-2.0.so -L/usr/lib /usr/lib/libgc.so -lpthread
/usr/lib/libffi.so /usr/lib/libunistring.so /usr/lib/libiconv.so
/usr/lib/libgmp.so /usr/lib/libltdl.so -ldl -lcrypt -lm -pthread
./.libs/libguile-2.0.so: warning: the use of `tmpnam' is dangerous,
better use `mkstemp'
./.libs/libguile-2.0.so: warning: gethostbyaddr is obsolescent, use
getaddrinfo() instead.
./.libs/libguile-2.0.so: warning: gethostbyname is obsolescent, use
getnameinfo() instead.
./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'
collect2: ld returned 1 exit status
make[3]: *** [guile] Error 1

To get clock_getcpuclockid, it is needed to link with librt, where
this symbol is present (see also
http://joysofprogramming.com/undefined-reference-to-clock_getcpuclockid/).
Current workaround:

# cd libguile/
# /bin/bash ../libtool  --tag=CC   --mode=link
powerpc-gnu-linux-uclibc-gcc -pthread -Wall -Wmissing-prototypes
-Wdeclaration-after-statement -Wswitch-enum -fvisibility=hidden -g -O2
-pthread  -o guile guile-guile.o libguile-2.0.la -lcrypt -lm -lrt
libtool: link: powerpc-gnu-linux-uclibc-gcc -pthread -Wall
-Wmissing-prototypes -Wdeclaration-after-statement -Wswitch-enum
-fvisibility=hidden -g -O2 -pthread -o .libs/guile guile-guile.o
./.libs/libguile-2.0.so -L/usr/lib /usr/lib/libgc.so -lpthread
/usr/lib/libffi.so /usr/lib/libunistring.so /usr/lib/libiconv.so
/usr/lib/libgmp.so /usr/lib/libltdl.so -ldl -lcrypt -lm -lrt -pthread
./.libs/libguile-2.0.so: warning: the use of `tmpnam' is dangerous,
better use `mkstemp'
./.libs/libguile-2.0.so: warning: gethostbyaddr is obsolescent, use
getaddrinfo() instead.
./.libs/libguile-2.0.so: warning: gethostbyname is obsolescent, use
getnameinfo() instead.

(i.e. it builds and links; after that, guile build process can be
resumed with make in source tree)

Re: [build error] ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'

[Andy Wingo]

Hi Douglas,

On Tue 10 May 2011 20:16, Douglas Mencken <dougmencken@gmail.com> writes:

> To get clock_getcpuclockid, it is needed to link with librt, where
> this symbol is present

Can you check your config.log for mentions of clock_gettime ?

For example in mine I have:

  configure:25329: checking for library containing clock_gettime
  configure:25377: result: -lrt
  configure:25389: checking for clock_gettime
  configure:25389: result: yes
  configure:25389: checking for clock_settime
  configure:25389: result: yes

> I'm trying to build guile-v2.0.1-53-g8f6a4b2, and got the following errors:
>
>   CC       guile-guile.o
>   CCLD     guile
> ./.libs/libguile-2.0.so: warning: the use of `tmpnam' is dangerous,
> better use `mkstemp'
> ./.libs/libguile-2.0.so: warning: gethostbyaddr is obsolescent, use
> getaddrinfo() instead.
> ./.libs/libguile-2.0.so: warning: gethostbyname is obsolescent, use
> getnameinfo() instead.
> ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'
> collect2: ld returned 1 exit status
> make[3]: *** [guile] Error 1

Odd.  To have gotten here you had to have built libguile already, which
indeed should have linked to -lrt.  Can you grep your libguile/Makefile
for LIB_CLOCK_GETTIME ?

Is it perhaps that clock_getcpuclockid is in -lrt but clock_gettime is
in your libc?

Andy
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http://wingolog.org/

Re: [build error] ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'

[Andy Wingo]

[-- Attachment #1: Type: text/plain, Size: 288 bytes --]

On Fri 20 May 2011 12:07, Andy Wingo <wingo@pobox.com> writes:

> Hi Douglas,
>
> On Tue 10 May 2011 20:16, Douglas Mencken <dougmencken@gmail.com> writes:
>
>> To get clock_getcpuclockid, it is needed to link with librt, where
>> this symbol is present

Does this patch fix it for you?


[-- Attachment #2: 0001-check-for-clock_getcpuclockid-in-gl_CLOCK_TIME.patch --]
[-- Type: text/plain, Size: 1567 bytes --]

From 5ad05b93a3f02be7c66fbab9c49e23ca314b7c33 Mon Sep 17 00:00:00 2001
From: Andy Wingo <wingo@pobox.com>
Date: Fri, 20 May 2011 18:48:33 +0200
Subject: [PATCH] check for clock_getcpuclockid in gl_CLOCK_TIME

* acinclude.m4 (gl_CLOCK_TIME): It could be that clock_gettime is in
  libc but clock_getcpuclockid is not, so check for that explicitly.
---
 acinclude.m4 |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/acinclude.m4 b/acinclude.m4
index ba8b090..5bd1ced 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -529,8 +529,14 @@ AC_DEFUN([gl_CLOCK_TIME],
   AC_SUBST([LIB_CLOCK_GETTIME])
   gl_saved_libs=$LIBS
     AC_SEARCH_LIBS([clock_gettime], [rt posix4],
-                   [test "$ac_cv_search_clock_gettime" = "none required" ||
-                    LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
-    AC_CHECK_FUNCS([clock_gettime clock_settime])
+                   [if test "$ac_cv_search_clock_gettime" = "none required"; then
+                      AC_SEARCH_LIBS([clock_getcpuclockid], [rt posix4],
+                                     [test "$ac_cv_search_clock_getcpuclockid" = "none required" \
+                                      || LIB_CLOCK_GETTIME=$ac_cv_search_clock_getcpuclockid],
+                                     [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
+                    else
+                      LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime
+                    fi])
+    AC_CHECK_FUNCS([clock_gettime clock_settime clock_getcpuclockid])
   LIBS=$gl_saved_libs
 ])
-- 
1.7.5.1


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-- 
http://wingolog.org/

Re: [build error] ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'

[Douglas Mencken]

> Can you grep your libguile/Makefile for LIB_CLOCK_GETTIME ?

There's empty definition.
LIB_CLOCK_GETTIME =

> Is it perhaps that clock_getcpuclockid is in -lrt but clock_gettime is
> in your libc?

clock_gettime is in both of them:

/lib # readelf -s librt.so.0 | grep clock
    42: 00001cb4    68 FUNC    GLOBAL DEFAULT    6 clock_gettime
    44: 00001a78   172 FUNC    GLOBAL DEFAULT    6 clock_nanosleep
    64: 00001b74    88 FUNC    GLOBAL DEFAULT    6 clock_getcpuclockid
/lib # readelf -s libc.so.0 | grep clock
   166: 0000fcf4    72 FUNC    GLOBAL DEFAULT    6 clock_gettime
   514: 00011868    72 FUNC    GLOBAL DEFAULT    6 clock_settime
   537: 0000fa84    72 FUNC    GLOBAL DEFAULT    6 clock_getres
   762: 0002a588    56 FUNC    GLOBAL DEFAULT    6 clock

but getcpuclockid is only in librt.

Re: [build error] ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'

[Douglas Mencken]

> +                      AC_SEARCH_LIBS([clock_getcpuclockid], [rt posix4],
> +                                     [test "$ac_cv_search_clock_getcpuclockid" = "none required" \
> +                                      || LIB_CLOCK_GETTIME=$ac_cv_search_clock_getcpuclockid],
> +                                     [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
> Does this patch fix it for you?

Yes!
  CCLD     libguile-2.0.la
  CC       guile-guile.o
  CCLD     guile
./.libs/libguile-2.0.so: warning: the use of `tmpnam' is dangerous,
better use `mkstemp'
./.libs/libguile-2.0.so: warning: gethostbyaddr is obsolescent, use
getaddrinfo() instead.
./.libs/libguile-2.0.so: warning: gethostbyname is obsolescent, use
getnameinfo() instead.
flex -t ./c-tokenize.lex > c-tokenize.c || { rm c-tokenize.c; false; }
  GEN      c-tokenize.o
  GEN      guile_filter_doc_snarfage
  SNARF  alist.doc
...

Cool. Thank you. I hope this patch would be in mainstream.

Re: [build error] ./.libs/libguile-2.0.so: undefined reference to `clock_getcpuclockid'

[Andy Wingo]

On Sat 21 May 2011 14:50, Douglas Mencken <dougmencken@gmail.com> writes:

>> +                      AC_SEARCH_LIBS([clock_getcpuclockid], [rt posix4],
>> +                                     [test "$ac_cv_search_clock_getcpuclockid" = "none required" \
>> +                                      || LIB_CLOCK_GETTIME=$ac_cv_search_clock_getcpuclockid],
>> +                                     [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
>> Does this patch fix it for you?
>
> Yes!

Thanks for the testing, applied to git.  I also sent a mail to
bug-gnulib regarding this issue.

Andy
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http://wingolog.org/