meson: convert hw/mem

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/Makefile.objs

@@ -34,7 +34,6 @@ devices-dirs-y += usb/
 devices-dirs-$(CONFIG_VFIO) += vfio/
 devices-dirs-y += virtio/
 devices-dirs-y += watchdog/
-devices-dirs-$(CONFIG_MEM_DEVICE) += mem/
 endif
 
 common-obj-y += $(devices-dirs-y)

hw/mem/Kconfig

@@ -9,3 +9,4 @@ config NVDIMM
     bool
     default y
     depends on (PC || PSERIES || ARM_VIRT)
+    select MEM_DEVICE

hw/mem/Makefile.objs

-common-obj-$(CONFIG_DIMM) += pc-dimm.o
-common-obj-y += memory-device.o
-common-obj-$(CONFIG_NVDIMM) += nvdimm.o

hw/mem/meson.build

+mem_ss = ss.source_set()
+mem_ss.add(files('memory-device.c'))
+mem_ss.add(when: 'CONFIG_DIMM', if_true: files('pc-dimm.c'))
+mem_ss.add(when: 'CONFIG_NVDIMM', if_true: files('nvdimm.c'))
+
+softmmu_ss.add_all(when: 'CONFIG_MEM_DEVICE', if_true: mem_ss)

hw/meson.build

 subdir('core')
+subdir('mem')
 subdir('nubus')
 subdir('semihosting')
 subdir('smbios')