Re: [LTP] cap_bounds_r.c build failure

["Mitani" <mitani@ryobi.co.jp>]

Hi,

Thank you for your help.

I tried to "make" with Serge's patch in my system.
But, sorry, it failed.


---

I did with following procedure:

1) I did "make" and "make install" of "libcap-2.11" .

2) I confirmed about following files.
------------
[root@RHEL4-8 include]# pwd
/usr/include
[root@RHEL4-8 include]# ls -l sys/capability.h
-rw-r--r--  1 root root 3345 Apr  9 15:44 sys/capability.h
[root@RHEL4-8 include]# ls -l linux/capability.h
-rw-r--r--  1 root root 8273 May 14  2008 linux/capability.h
[root@RHEL4-8 include]#
------------
"sys/capability.h" replased by "libcap-2.11" .

3) I applied patch to "m4/ltp-cap.m4", and confirmed it.
------------
...
AC_DEFUN([LTP_CHECK_CAPABILITY_SUPPORT],[
AH_TEMPLATE(HAVE_LIBCAP,
[Define to 1 if you have libcap-2 installed.])
AC_CHECK_HEADERS(sys/capability.h,[
        LTP_CAPABILITY_SUPPORT=yes
        AC_CHECK_DECL(VFS_CAP_REVISION_2,[AC_DEFINE(HAVE_LIBCAP)
CAP_LIBS="-lcap"],[CAP_LIBS=""],[#include "linux/capability.h"])
        AC_CHECK_PROG(HAVE_SETCAP,setcap,setcap,false)
])]
AC_SUBST(CAP_LIBS)
)
------------

4) I did "./configure", and confirmed "configure.log" .
------------
...
| #define HAVE_SYS_CAPABILITY_H 1
| #define HAVE_LIBCAP 1
| #define HAVE_SYS_PRCTL_H 1
| #define HAVE_DECL_PR_CAPBSET_DROP 0
| #define HAVE_DECL_PR_CAPBSET_READ 0
...
------------
"HAVE_LIBCAP" define was ON.

5) I tried to "make", but it failed as foliows.
------------
cap_bounds_r.c: In function `main':
cap_bounds_r.c:46: error: `CAP_LAST_CAP' undeclared (first use in this
function)
cap_bounds_r.c:46: error: (Each undeclared identifier is reported only once
cap_bounds_r.c:46: error: for each function it appears in.)
make[4]: *** [cap_bounds_r] Error 1
------------


I don't know about configure well, and I examine it.


Thank you--

-Tomonori Mitani


> -----Original Message-----
> From: Serge E. Hallyn [mailto:serue@us.ibm.com]
> Sent: Monday, April 05, 2010 10:20 PM
> To: Mitani
> Cc: Rishikesh K Rajak; Andrew Morgan; Garrett Cooper;
> ltp-list@lists.sourceforge.net
> Subject: Re: [LTP] cap_bounds_r.c build failure
> 
> Quoting Mitani (mitani@ryobi.co.jp):
> > Hi,
> >
> >
> > I tired to upgrade "libcap" from "libcap-1.0-20" to "libcap-2.11".
> > My system is RHEL4.8 (x86) and kernel version is 2.6.9-89.ELsmp.
> 
> Oh, I'm sorry, I misunderstood from the first.  I thought you wanted
> to test a modern kernel on an older distro.  So the real problem in
> your original email wasn't that cap_bounds_r.c wouldn't compile, but
> that it tried to compile.
> 
> Maybe the attached ltp patch will do a better job of not trying
> to compile.  Though I'm not sure what is the best way to detect
> both 64-bit caps in kernel and libcap2 userspace.
> 
> -serge
> 
> Date: Mon, 5 Apr 2010 08:17:46 -0500
> Subject: [PATCH ltp] don't compile cap_bounds on older systems
> 
> Only define HAVE_LIBCAP for libcap2 and 64-bit caps.
> 
> Signed-off-by: Serge Hallyn <serue@us.ibm.com>
> ---
>  m4/ltp-cap.m4 |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/m4/ltp-cap.m4 b/m4/ltp-cap.m4
> index caa436f..6248ff3 100644
> --- a/m4/ltp-cap.m4
> +++ b/m4/ltp-cap.m4
> @@ -27,7 +27,7 @@ AH_TEMPLATE(HAVE_LIBCAP,
>  [Define to 1 if you have libcap-2 installed.])
>  AC_CHECK_HEADERS(sys/capability.h,[
>  	LTP_CAPABILITY_SUPPORT=yes
> -	AC_CHECK_LIB(cap,cap_compare,[AC_DEFINE(HAVE_LIBCAP)
> CAP_LIBS="-lcap"], [CAP_LIBS=""])
> +	AC_CHECK_DECL(VFS_CAP_REVISION_2,[AC_DEFINE(HAVE_LIBCAP)
> CAP_LIBS="-lcap"],[CAP_LIBS=""],[#include "linux/capability.h"])
>  	AC_CHECK_PROG(HAVE_SETCAP,setcap,setcap,false)
>  ])]
>  AC_SUBST(CAP_LIBS)
> --
> 1.6.3.3



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