Re: [LTP] cap_bounds_r.c build failure

["Serge E. Hallyn" <serue@us.ibm.com>]

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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