1 files changed, 7 insertions, 0 deletions
diff --git a/py/py.mk b/py/py.mk
index 8c2d3c7b8..09de1962d 100644
--- a/py/py.mk
+++ b/py/py.mk
@@ -21,6 +21,13 @@ QSTR_GLOBAL_REQUIREMENTS += $(HEADER_BUILD)/mpversion.h
 # some code is performance bottleneck and compiled with other optimization options
 CSUPEROPT = -O3
 
+# Enable building 32-bit code on 64-bit host.
+ifeq ($(MICROPY_FORCE_32BIT),1)
+CC += -m32
+CXX += -m32
+LD += -m32
+endif
+
 # External modules written in C.
 ifneq ($(USER_C_MODULES),)
 # pre-define USERMOD variables as expanded so that variables are immediate