parallels: build with parallels SDK

Executing prlctl command is not an optimal way to interact with
Parallels Cloud Server (PCS), it's better to use parallels SDK,
which is a remote API to paralles dispatcher service.

We prepared opensource version of this SDK and published it on
github, it's distributed under LGPL license. Here is a git repo:
https://github.com/Parallels/parallels-sdk.

To build with parallels SDK user should get compiler and linker
options from pkg-config 'parallels-sdk' file. So fix checks in
configure script and build with parallels SDK, if that pkg-config
file exists and add gcc options to makefile.
Signed-off-by: NDmitry Guryanov <dguryanov@parallels.com>

configure.ac

@@ -1046,19 +1046,21 @@ dnl
 dnl Checks for the Parallels driver
 dnl
 
-if test "$with_parallels" = "check"; then
-    with_parallels=$with_linux
-    if test ! $host_cpu = 'x86_64'; then
-        with_parallels=no
-    fi
-fi
 
-if test "$with_parallels" = "yes" && test "$with_linux" = "no"; then
-    AC_MSG_ERROR([The Parallels driver can be enabled on Linux only.])
-fi
+if test "$with_parallels" = "yes" ||
+   test "$with_parallels" = "check"; then
+    PKG_CHECK_MODULES([PARALLELS_SDK], [parallels-sdk],
+                      [PARALLELS_SDK_FOUND=yes], [PARALLELS_SDK_FOUND=no])
 
-if test "$with_parallels" = "yes"; then
-    AC_DEFINE_UNQUOTED([WITH_PARALLELS], 1, [whether Parallels driver is enabled])
+    if test "$with_parallels" = "yes" && test "$PARALLELS_SDK_FOUND" = "no"; then
+        AC_MSG_ERROR([Parallels Virtualization SDK is needed to build the Parallels driver.])
+    fi
+
+    with_parallels=$PARALLELS_SDK_FOUND
+    if test "$with_parallels" = "yes"; then
+        AC_DEFINE_UNQUOTED([WITH_PARALLELS], 1,
+                           [whether Parallels driver is enabled])
+    fi
 fi
 AM_CONDITIONAL([WITH_PARALLELS], [test "$with_parallels" = "yes"])
 

src/Makefile.am

@@ -1390,7 +1390,9 @@ if WITH_PARALLELS
 noinst_LTLIBRARIES += libvirt_driver_parallels.la
 libvirt_la_BUILT_LIBADD += libvirt_driver_parallels.la
 libvirt_driver_parallels_la_CFLAGS = \
-		-I$(top_srcdir)/src/conf $(AM_CFLAGS)
+		-I$(top_srcdir)/src/conf $(AM_CFLAGS) \
+		$(PARALLELS_SDK_CFLAGS)
+libvirt_driver_parallels_la_LIBADD = $(PARALLELS_SDK_LIBS)
 libvirt_driver_parallels_la_SOURCES = $(PARALLELS_DRIVER_SOURCES)
 endif WITH_PARALLELS