The 'microvm' machine misses various dependencies:

  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `acpi_setup_microvm':
  hw/i386/acpi-microvm.c:247: undefined reference to `acpi_build_tables_init'
  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `acpi_build_microvm':
  hw/i386/acpi-microvm.c:192: undefined reference to `bios_linker_loader_alloc'
  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `build_dsdt_microvm':
  hw/i386/acpi-microvm.c:121: undefined reference to `init_aml_allocator'
  /usr/bin/ld: hw/i386/acpi-microvm.c:124: undefined reference to `acpi_data_push'
  /usr/bin/ld: hw/i386/acpi-microvm.c:126: undefined reference to `aml_scope'
  /usr/bin/ld: hw/i386/acpi-microvm.c:129: undefined reference to `build_ged_aml'
  /usr/bin/ld: hw/i386/acpi-microvm.c:131: undefined reference to `acpi_dsdt_add_power_button'
  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `acpi_dsdt_add_virtio':
  hw/i386/acpi-microvm.c:77: undefined reference to `aml_string'
  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `build_dsdt_microvm':
  hw/i386/acpi-microvm.c:138: undefined reference to `aml_scope'
  /usr/bin/ld: hw/i386/acpi-microvm.c:149: undefined reference to `build_header'
  /usr/bin/ld: hw/i386/acpi-microvm.c:152: undefined reference to `free_aml_allocator'
  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `acpi_build_microvm':
  hw/i386/acpi-microvm.c:202: undefined reference to `acpi_add_table'
  /usr/bin/ld: hw/i386/acpi-microvm.c:203: undefined reference to `build_fadt'
  /usr/bin/ld: hw/i386/acpi-microvm.c:206: undefined reference to `acpi_add_table'
  /usr/bin/ld: hw/i386/acpi-microvm.c:207: undefined reference to `acpi_build_madt'
  /usr/bin/ld: hw/i386/acpi-microvm.c:212: undefined reference to `build_xsdt'
  /usr/bin/ld: hw/i386/acpi-microvm.c:224: undefined reference to `build_rsdp'
  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `acpi_setup_microvm':
  hw/i386/acpi-microvm.c:251: undefined reference to `acpi_add_rom_blob'
  /usr/bin/ld: hw/i386/acpi-microvm.c:253: undefined reference to `acpi_add_rom_blob'
  /usr/bin/ld: hw/i386/acpi-microvm.c:255: undefined reference to `acpi_add_rom_blob'
  /usr/bin/ld: hw/i386/acpi-microvm.c:258: undefined reference to `acpi_build_tables_cleanup'
  /usr/bin/ld: libqemu-i386-softmmu.fa.p/hw_i386_acpi-microvm.c.o: in function `acpi_dsdt_add_pci':
  hw/i386/acpi-microvm.c:105: undefined reference to `acpi_dsdt_add_gpex'
  collect2: error: ld returned 1 exit status
  ninja: build stopped: subcommand failed.

Update the ACPI_HW_REDUCED symbol to select ACPI_MEMORY_HOTPLUG /
ACPI_NVDIMM / ACPI.

Fixes: 8045df14bcc ("microvm/acpi: add minimal acpi support")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20210616204328.2611406-23-philmd@redhat.com>
---
 hw/acpi/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig
index 1932f66af8d..cfc4ede8d91 100644
--- a/hw/acpi/Kconfig
+++ b/hw/acpi/Kconfig
@@ -42,3 +42,7 @@ config ACPI_VMGENID
     depends on PC
 
 config ACPI_HW_REDUCED
+    bool
+    select ACPI
+    select ACPI_MEMORY_HOTPLUG
+    select ACPI_NVDIMM
-- 
2.31.1