enable_ipv6
with_system_libpcap
with_crypto
+with_cap_ng
'
ac_precious_vars='build_alias
host_alias
available]
--with-system-libpcap don't use local pcap library
--with-crypto use OpenSSL libcrypto [default=yes, if available]
+ --with-cap-ng use libcap-ng [default=yes, if available]
Some influential environment variables:
CC C compiler command
fi
-for ac_func in pcap_findalldevs pcap_dump_flush pcap_lib_version pcap_setdirection
+#
+# Check for a miscellaneous collection of functions which we use
+# if we have them.
+#
+for ac_func in pcap_findalldevs pcap_dump_flush pcap_lib_version pcap_setdirection pcap_set_immediate_mode
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
if test "$ac_lbl_cv_pcap_version_defined" = yes ; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }
$as_echo "#define HAVE_PCAP_VERSION 1" >>confdefs.h
esac
+#
+# Make sure we have a definition for C99's uintptr_t (regardless of
+# whether the environment is a C99 environment or not).
+#
+
+ ac_fn_c_check_type "$LINENO" "uintptr_t" "ac_cv_type_uintptr_t" "$ac_includes_default"
+if test "x$ac_cv_type_uintptr_t" = xyes; then :
+
+$as_echo "#define HAVE_UINTPTR_T 1" >>confdefs.h
+
+else
+ for ac_type in 'unsigned int' 'unsigned long int' \
+ 'unsigned long long int'; do
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$ac_includes_default
+int
+main ()
+{
+static int test_array [1 - 2 * !(sizeof (void *) <= sizeof ($ac_type))];
+test_array [0] = 0;
+return test_array [0];
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+cat >>confdefs.h <<_ACEOF
+#define uintptr_t $ac_type
+_ACEOF
+
+ ac_type=
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ test -z "$ac_type" && break
+ done
+fi
+
+
+
#
# Define the old BSD specified-width types in terms of the C99 types;
# we may need them with libpcap include files.
fi
if test "$want_libcrypto" != "no"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for DES_cbc_encrypt in -lcrypto" >&5
+ #
+ # If we don't have the header, no point in checking the
+ # library.
+ #
+ # Yes, there are OSes that provide the library but not
+ # the header. (I'm looking at *you*, recent versions of
+ # OS X/macOS.)
+ #
+ for ac_header in openssl/crypto.h
+do :
+ ac_fn_c_check_header_mongrel "$LINENO" "openssl/crypto.h" "ac_cv_header_openssl_crypto_h" "$ac_includes_default"
+if test "x$ac_cv_header_openssl_crypto_h" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_OPENSSL_CRYPTO_H 1
+_ACEOF
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for DES_cbc_encrypt in -lcrypto" >&5
$as_echo_n "checking for DES_cbc_encrypt in -lcrypto... " >&6; }
if ${ac_cv_lib_crypto_DES_cbc_encrypt+:} false; then :
$as_echo_n "(cached) " >&6
fi
- for ac_header in openssl/evp.h
+ for ac_header in openssl/evp.h
do :
ac_fn_c_check_header_mongrel "$LINENO" "openssl/evp.h" "ac_cv_header_openssl_evp_h" "$ac_includes_default"
if test "x$ac_cv_header_openssl_evp_h" = xyes; then :
done
+
+fi
+
+done
+
+fi
+
+# Check for libcap-ng
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use libcap-ng" >&5
+$as_echo_n "checking whether to use libcap-ng... " >&6; }
+# Specify location for both includes and libraries.
+want_libcap_ng=ifavailable
+
+# Check whether --with-cap_ng was given.
+if test "${with_cap_ng+set}" = set; then :
+ withval=$with_cap_ng;
+ if test $withval = no
+ then
+ want_libcap_ng=no
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ elif test $withval = yes
+ then
+ want_libcap_ng=yes
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ fi
+
+else
+
+ #
+ # Use libcap-ng if it's present, otherwise don't.
+ #
+ want_libcap_ng=ifavailable
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes, if available" >&5
+$as_echo "yes, if available" >&6; }
+
+fi
+
+if test "$want_libcap_ng" != "no"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for capng_change_id in -lcap-ng" >&5
+$as_echo_n "checking for capng_change_id in -lcap-ng... " >&6; }
+if ${ac_cv_lib_cap_ng_capng_change_id+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lcap-ng $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char capng_change_id ();
+int
+main ()
+{
+return capng_change_id ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_cap_ng_capng_change_id=yes
+else
+ ac_cv_lib_cap_ng_capng_change_id=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_cap_ng_capng_change_id" >&5
+$as_echo "$ac_cv_lib_cap_ng_capng_change_id" >&6; }
+if test "x$ac_cv_lib_cap_ng_capng_change_id" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBCAP_NG 1
+_ACEOF
+
+ LIBS="-lcap-ng $LIBS"
+
+fi
+
+ for ac_header in cap-ng.h
+do :
+ ac_fn_c_check_header_mongrel "$LINENO" "cap-ng.h" "ac_cv_header_cap_ng_h" "$ac_includes_default"
+if test "x$ac_cv_header_cap_ng_h" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_CAP_NG_H 1
+_ACEOF
+
+fi
+
+done
+
fi
if test "$missing_includes" = "yes"; then
projects / tcpdump / blobdiff