diff --git a/core/board_config.mk b/core/board_config.mk
index 2eaba96..c558264 100644
--- a/core/board_config.mk
+++ b/core/board_config.mk
@@ -55,6 +55,10 @@
 _board_strip_readonly_list += TARGET_2ND_CPU_ABI2
 _board_strip_readonly_list += TARGET_2ND_CPU_VARIANT
 _board_strip_readonly_list += TARGET_2ND_CPU_VARIANT_RUNTIME
+# TARGET_ARCH_SUITE is an alternative arch configuration to TARGET_ARCH (and related variables),
+# that can be used for soong-only builds to build for several architectures at once.
+# Allowed values currently are "ndk" and "mainline_sdk".
+_board_strip_readonly_list += TARGET_ARCH_SUITE
 
 # File system variables
 _board_strip_readonly_list += BOARD_FLASH_BLOCK_SIZE
diff --git a/core/main.mk b/core/main.mk
index 3cc3690..4e55cb4 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -115,6 +115,11 @@
 endif
 endif
 
+ifdef TARGET_ARCH_SUITE
+  # TODO(b/175577370): Enable this error.
+  # $(error TARGET_ARCH_SUITE is not supported in kati/make builds)
+endif
+
 # ADDITIONAL_<partition>_PROPERTIES are properties that are determined by the
 # build system itself. Don't let it be defined from outside of the core build
 # system like Android.mk or <product>.mk files.
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 61c0452..9459a5b 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -54,6 +54,9 @@
 $(call add_json_str,  DeviceSecondaryCpuVariant,         $(TARGET_2ND_CPU_VARIANT))
 $(call add_json_list, DeviceSecondaryAbi,                $(TARGET_2ND_CPU_ABI) $(TARGET_2ND_CPU_ABI2))
 
+$(call add_json_bool, Aml_abis,                          $(if $(filter mainline_sdk,$(TARGET_ARCH_SUITE)),true))
+$(call add_json_bool, Ndk_abis,                          $(if $(filter ndk,         $(TARGET_ARCH_SUITE)),true))
+
 $(call add_json_str,  NativeBridgeArch,                  $(TARGET_NATIVE_BRIDGE_ARCH))
 $(call add_json_str,  NativeBridgeArchVariant,           $(TARGET_NATIVE_BRIDGE_ARCH_VARIANT))
 $(call add_json_str,  NativeBridgeCpuVariant,            $(TARGET_NATIVE_BRIDGE_CPU_VARIANT))