Imported Upstream version 2.6.0

[debian/amanda] / config / amanda / s3-device.m4

diff --git a/config/amanda/s3-device.m4 b/config/amanda/s3-device.m4
new file mode 100644 (file)
index 0000000..9883d20
--- /dev/null
+++ b/config/amanda/s3-device.m4
@@ -0,0 +1,80 @@
+# SYNOPSIS
+#
+#   AMANDA_S3_DEVICE
+#
+# OVERVIEW
+#
+#   Perform the necessary checks for the S3 Device.  If the S3 device should be built,
+#   WANT_S3_DEVICE is DEFINEd and set up as an AM_CONDITIONAL.
+#
+#   The subsidiary DevPay support, if enabled, defines and AM_CONDITIONALizes
+#   WANT_DEVPAY.
+#
+AC_DEFUN([AMANDA_S3_DEVICE], [
+    AC_REQUIRE([AMANDA_CHECK_LIBCURL])
+    AC_REQUIRE([AMANDA_CHECK_HMAC])
+
+    if test "$libcurl_feature_SSL" != "yes" ||
+       test "$libcurl_protocol_HTTPS" != "yes"; then
+        s3_ssl=no
+    else
+       s3_ssl=yes
+    fi
+
+    AC_ARG_ENABLE([s3-device],
+       AS_HELP_STRING([--disable-s3-device],
+                      [disable the S3 device]),
+       [ WANT_S3_DEVICE=$enableval ], [ WANT_S3_DEVICE=maybe ])
+
+    AC_MSG_CHECKING([whether to include the Amazon S3 device])
+    # if the user didn't specify 'no', then check for support
+    if test x"$WANT_S3_DEVICE" != x"no"; then
+       if test x"$HAVE_CURL" = x"yes" -a x"$HAVE_HMAC" = x"yes"; then
+           WANT_S3_DEVICE=yes
+       else
+           # no support -- if the user explicitly enabled the device,
+           # then this is an error
+           if test x"$WANT_S3_DEVICE" = x"yes"; then
+               AC_MSG_RESULT(no)
+               AC_MSG_ERROR([Cannot build the Amazon S3 device: one or more prerequisites are missing.])
+           else
+               WANT_S3_DEVICE=no
+           fi
+       fi
+    fi
+    AC_MSG_RESULT($WANT_S3_DEVICE)
+
+    AM_CONDITIONAL([WANT_S3_DEVICE], [test x"$WANT_S3_DEVICE" = x"yes"])
+
+    # Now handle any setup for S3, if we want it.
+    if test x"$WANT_S3_DEVICE" = x"yes"; then
+       AC_DEFINE(WANT_S3_DEVICE, [], [Compile Amazon S3 driver])
+       if test x"$s3_ssl" = x"no"; then
+         AMANDA_MSG_WARN([Encryption support is not available for S3; requests will be sent in plaintext.])
+       fi
+    fi
+                         
+
+    AC_ARG_ENABLE([devpay],
+                 AS_HELP_STRING([--enable-devpay],
+                                [Use devpay authentication for Amazon S3 driver]),
+                 [WANT_DEVPAY=$enableval], [WANT_DEVPAY=no])
+
+    AC_MSG_CHECKING([whether to include the Amazon S3 device's DevPay support])
+    if test x"$WANT_DEVPAY" = x"yes"; then
+       if test x"$WANT_S3_DEVICE" != x"yes"; then
+           AC_MSG_RESULT(no)
+           AC_MSG_ERROR([DevPay support requires the S3 device (--enable-s3-device)])
+       fi
+
+       if test "$s3_ssl" != "yes"; then
+           AC_MSG_RESULT(no)
+           AC_MSG_ERROR([Cannot use devpay without HTTPS/SSL support in libcurl.])
+       fi
+
+       AC_DEFINE([WANT_DEVPAY], [], [Compile Amazon DevPay support])
+    fi
+    AC_MSG_RESULT($WANT_DEVPAY)
+
+    AM_CONDITIONAL([WANT_DEVPAY], [test "$WANT_DEVPAY" = "yes"])
+])