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-rw-r--r--ports/stm32/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/ports/stm32/Makefile b/ports/stm32/Makefile
index 677006b92..51438b0b1 100644
--- a/ports/stm32/Makefile
+++ b/ports/stm32/Makefile
@@ -136,6 +136,7 @@ SRC_LIBM = $(addprefix lib/libm_dbl/,\
ceil.c \
cos.c \
cosh.c \
+ copysign.c \
erf.c \
exp.c \
expm1.c \