Hi Simon, Yann,
Le 08/04/2014 19:24, Yann E. MORIN a écrit :
Simon, All,
On 2014-04-08 13:03 -0400, Simon Marchi spake thusly:
Hi Romain,
It seems like with that commit, dlinfo is not found even on a glibc
based system, where it is present.
See https://bugs.lttng.org/issues/778
Do you have a suggestion to fix that ?
I think we should use AC_CHECK_DECL instead of AC_CHECK_FUNCS.
dlinfo is in dlfcn.h so we need a check that allows us to include that
header, and we must check for that header first, of course. So, maybe
something like (completely untested, directly written in the mail):
AC_CHECK_HEADER([dlfcn.h])
AS_IF([test "${ac_cv_header_dlfcn_h}" = "yes"],
[AC_CHECK_DECL([dlinfo],,,[dlfcn.h])],
[ac_cv_have_decl_dlinfo="no"])
AM_CONDITIONAL([HAVE_DLINFO], [test "${ac_cv_have_decl_dlinfo}" = "yes"])
But I'm no expert in autoconf, so the actual solution may be slightly
different.
Regards,
Yann E. MORIN.
Sorry for the mistake, here is a new try:
AC_CHECK_HEADER([dlfcn.h])
AS_IF([test "${ac_cv_header_dlfcn_h}" = "yes"],
[AC_CHECK_DECLS([RTLD_DI_LINKMAP],,,
[#define _GNU_SOURCE /* Required on Linux to get GNU extensions */
#include <dlfcn.h>])
],
[ac_cv_have_decl_RTLD_DI_LINKMAP="no"])
AM_CONDITIONAL([HAVE_DLINFO], [test "${ac_cv_have_decl_RTLD_DI_LINKMAP}"
= "yes"])
I can't use dlinfo directly here because it isdetected
even if it is not available in uClibc. (detected fromust-dlfcn.h ?)
So, I use RTLD_DI_LINKMAP which is not defined in uClibc.
I'll send the patch later (after doing some test)
Best regards,
Romain Naour
_______________________________________________
lttng-dev mailing list
[email protected]
http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
