[025/142] meson: convert vss-win32

diff --git a/Makefile b/Makefile
index ab007ff60f..5ddec3a5da 100644
--- a/Makefile
+++ b/Makefile
@@ -284,7 +284,6 @@  endif
 dummy := $(call unnest-vars,, \
                 authz-obj-y \
                 chardev-obj-y \
-                qga-vss-dll-obj-y \
                 block-obj-y \
                 block-obj-m \
                 crypto-obj-y \
diff --git a/Makefile.objs b/Makefile.objs
index 92321847d1..f1465a620e 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -93,11 +93,3 @@  version-obj-$(CONFIG_WIN32) += $(BUILD_DIR)/version.o
 ######################################################################
 # tracing
 util-obj-y +=  trace/
-
-######################################################################
-# guest agent
-
-# FIXME: a few definitions from qapi/qapi-types.o and
-# qapi/qapi-visit.o are needed by libqemuutil.a.  These should be
-# extracted into a QAPI schema module, or perhaps a separate schema.
-qga-vss-dll-obj-y = qga/
diff --git a/meson.build b/meson.build
index 04e11460a0..8709847493 100644
--- a/meson.build
+++ b/meson.build
@@ -9,12 +9,14 @@  add_project_arguments(config_host['CFLAGS'].split(),
                       language: ['c', 'objc'])
 add_project_arguments(config_host['QEMU_CFLAGS'].split(),
                       language: 'c')
+add_project_arguments(config_host['QEMU_CXXFLAGS'].split(),
+                      language: 'cpp')
 add_project_link_arguments(config_host['LDFLAGS'].split(),
                            language: ['c', 'cpp', 'objc'])
 add_project_link_arguments(config_host['QEMU_LDFLAGS'].split(),
                            language: ['c', 'cpp', 'objc'])
 add_project_arguments(config_host['QEMU_INCLUDES'].split(),
-                      language: 'c')
+                      language: ['c', 'cpp'])
 
 configure_file(input: files('scripts/ninjatool.py'),
                output: 'ninjatool',
diff --git a/qga/Makefile.objs b/qga/Makefile.objs
deleted file mode 100644
index 9ecf2496da..0000000000
--- a/qga/Makefile.objs
+++ /dev/null
@@ -1 +0,0 @@ 
-qga-vss-dll-obj-$(CONFIG_QGA_VSS) += vss-win32/
diff --git a/qga/meson.build b/qga/meson.build
index 116102b865..f0ec8cf0d8 100644
--- a/qga/meson.build
+++ b/qga/meson.build
@@ -41,3 +41,9 @@  qga_ss = qga_ss.apply(config_host, strict: false)
 qga = executable('qemu-ga', qga_ss.sources(),
                  link_args: config_host['LIBS_QGA'].split(),
                  dependencies: [qemuutil, libudev])
+
+if host_machine.system() == 'windows'
+  if 'CONFIG_QGA_VSS' in config_host
+    subdir('vss-win32')
+  endif
+endif
diff --git a/qga/vss-win32/Makefile.objs b/qga/vss-win32/Makefile.objs
deleted file mode 100644
index fd3ba1896b..0000000000
--- a/qga/vss-win32/Makefile.objs
+++ /dev/null
@@ -1,23 +0,0 @@ 
-# rules to build qga-vss.dll
-
-qga-vss-dll-obj-y += requester.o provider.o install.o
-
-obj-qga-vss-dll-obj-y = $(addprefix $(obj)/, $(qga-vss-dll-obj-y))
-$(obj-qga-vss-dll-obj-y): QEMU_CXXFLAGS := $(filter-out -fstack-protector-all -fstack-protector-strong, $(QEMU_CXXFLAGS)) -Wno-unknown-pragmas -Wno-delete-non-virtual-dtor
-
-$(obj)/qga-vss.dll: LDFLAGS = -shared -Wl,--add-stdcall-alias,--enable-stdcall-fixup -lglib-2.0 -lole32 -loleaut32 -lshlwapi -luuid -lintl -lws2_32 -static
-$(obj)/qga-vss.dll: $(obj-qga-vss-dll-obj-y) $(SRC_PATH)/$(obj)/qga-vss.def
-	$(call quiet-command,$(CXX) -o $@ $(qga-vss-dll-obj-y) $(SRC_PATH)/qga/vss-win32/qga-vss.def $(CXXFLAGS) $(LDFLAGS),"LINK","$(TARGET_DIR)$@")
-
-
-# rules to build qga-provider.tlb
-# Currently, only native build is supported because building .tlb
-# (TypeLibrary) from .idl requires WindowsSDK and MIDL (and cl.exe in VC++).
-MIDL=$(WIN_SDK)/Bin/midl
-
-$(obj)/qga-vss.tlb: $(SRC_PATH)/$(obj)/qga-vss.idl
-ifeq ($(WIN_SDK),"")
-	$(call quiet-command,cp $(dir $<)qga-vss.tlb $@,"COPY","$(TARGET_DIR)$@")
-else
-	$(call quiet-command,$(MIDL) -tlb $@ -I $(WIN_SDK)/Include $<,"MIDL","$(TARGET_DIR)$@")
-endif
diff --git a/qga/vss-win32/meson.build b/qga/vss-win32/meson.build
new file mode 100644
index 0000000000..a7c865ffde
--- /dev/null
+++ b/qga/vss-win32/meson.build
@@ -0,0 +1,28 @@ 
+if add_languages('cpp', required: false)
+  glib_static = dependency('glib-2.0', static: true)
+  link_args = cc.get_supported_link_arguments(['-fstack-protector-all', '-fstack-protector-strong', '-Wl,--add-stdcall-alias', '-Wl,--enable-stdcall-fixup'])
+
+  shared_module('qga-vss', ['requester.cpp', 'provider.cpp', 'install.cpp'],
+                name_prefix: '',
+                cpp_args: ['-Wno-unknown-pragmas', '-Wno-delete-non-virtual-dtor', '-Wno-non-virtual-dtor'],
+                link_args: link_args,
+                vs_module_defs: 'qga-vss.def',
+                dependencies: glib_static)
+endif
+
+# rules to build qga-vss.tlb
+# Currently, only native build is supported because building .tlb
+# (TypeLibrary) from .idl requires WindowsSDK and MIDL (and cl.exe in VC++).
+midl = find_program('midl', required: false)
+if midl.found()
+  gen_tlb = custom_target('gen-tlb',
+                          input: 'qga-vss.idl',
+                          output: 'qga-vss.tlb',
+                          command: [midl, '-tlb', '-I' + config_host['WIN_SDK'],
+                                     '@INPUT@', '@OUTPUT@'])
+else
+  gen_tlb = custom_target('gen-tlb',
+                          input: 'qga-vss.tlb',
+                          output: 'qga-vss.tlb',
+                          command: ['cp', '@INPUT@', '@OUTPUT@'])
+endif