diff options
| author | Andy Zhou <azhou@nicira.com> | 2015-09-10 18:44:27 -0700 |
|---|---|---|
| committer | Andy Zhou <azhou@nicira.com> | 2015-09-30 19:42:25 -0700 |
| commit | 1bbebfb7afadac4adf209cf7f7ab69655479638b (patch) | |
| tree | 28a9aef8d4afd73084bbf3264b1efbf5499369cc /m4 | |
| parent | c28a1f83b1d6028cd3bc7aae6e07bbcc5665e57a (diff) | |
| download | openvswitch-1bbebfb7afadac4adf209cf7f7ab69655479638b.tar.gz | |
configure: add configuration options for libcap-ng
Add configuration option for enabling or disabling linking with
libcap-ng. Since capabilities are a security feature, the libcapng
option is handled as follows:
- no option: use libcapng if it's present
--disable-libcapng: do not use libcapng
--enable-libcapng: do use libcapng and fail configuration if
it's missing
On Linux, not linking with libcapng makes all OVS daemons fail when
--user option is specified.
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/openvswitch.m4 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4 index 98e5ce9be..d3558114c 100644 --- a/m4/openvswitch.m4 +++ b/m4/openvswitch.m4 @@ -186,6 +186,42 @@ AC_DEFUN([OVS_CHECK_NETLINK], [Define to 1 if Netlink protocol is available.]) fi]) +dnl Checks for libcap-ng. +AC_DEFUN([OVS_CHECK_LIBCAPNG], + [AC_ARG_ENABLE( + [libcapng], + [AC_HELP_STRING([--disable-libcapng], [Disable Linux capability support])], + [case "${enableval}" in + (yes) libcapng=true ;; + (no) libcapng=false ;; + (*) AC_MSG_ERROR([bad value ${enableval} for --enable-libcapng]) ;; + esac], + [libcapng=check]) + + if test "$libcapng" != false; then + AC_CHECK_LIB([cap-ng], [capng_clear], [HAVE_LIBCAPNG=yes]) + + if test "$HAVE_LIBCAPNG" != yes; then + if test "$libcapng" = true ; then + AC_MSG_ERROR([libcap-ng support requested, but not found]) + fi + if test "$libcapng" = check ; then + AC_MSG_WARN([cannot find libcap-ng. +--user option will not be supported on Linux. +(you may use --disable-libcapng to suppress this warning). ]) + fi + fi + fi + + AC_SUBST([HAVE_LIBCAPNG]) + AM_CONDITIONAL([HAVE_LIBCAPNG], [test "$HAVE_LIBCAPNG" = yes]) + if test "$HAVE_LIBCAPNG" = yes; then + AC_DEFINE([HAVE_LIBCAPNG], [1], + [Define to 1 if libcap-ng is available.]) + CAPNG_LDADD="-lcap-ng" + AC_SUBST([CAPNG_LDADD]) + fi]) + dnl Checks for OpenSSL. AC_DEFUN([OVS_CHECK_OPENSSL], [AC_ARG_ENABLE( |