diff --git a/config_cortex_m0.mk b/config_cortex_m0.mk
index bc36c4c..9552e58 100644
--- a/config_cortex_m0.mk
+++ b/config_cortex_m0.mk
@@ -17,6 +17,7 @@
 OPT_CFLAGS = -fdata-sections -ffunction-sections
 
 PLATFORM_CFLAGS = -Wno-unused-parameter -nostdinc -ffreestanding -fno-builtin -fsigned-char -fno-common -Wno-main -I$(shell $(CC) -print-search-dirs | $(AWK) '$$1 == "install:" {print $$NF}')include
+PLATFORM_CFLAGS += ARM_MATH_CM0
 
 PLATFORM_CXXFLAGS = $(PLATFORM_CFLAGS) -fno-rtti -fno-exceptions -fno-use-cxa-atexit
 PLATFORM_LDFLAGS = -nostdlib -nostartfiles -nodefaultlibs -Wl,-static,-gc-sections
diff --git a/config_cortex_m3.mk b/config_cortex_m3.mk
index 3f9f525..73e0b8c 100644
--- a/config_cortex_m3.mk
+++ b/config_cortex_m3.mk
@@ -17,6 +17,7 @@
 OPT_CFLAGS = -fdata-sections -ffunction-sections
 
 PLATFORM_CFLAGS = -Wno-unused-parameter -nostdinc -ffreestanding -fno-builtin -fsigned-char -fno-common -Wno-main -I$(shell $(CC) -print-search-dirs | $(AWK) '$$1 == "install:" {print $$NF}')include
+PLATFORM_CFLAGS += ARM_MATH_CM3
 
 PLATFORM_CXXFLAGS = $(PLATFORM_CFLAGS) -fno-rtti -fno-exceptions -fno-use-cxa-atexit
 PLATFORM_LDFLAGS = -nostdlib -nostartfiles -nodefaultlibs -Wl,-static,-gc-sections
diff --git a/config_cortex_m4f.mk b/config_cortex_m4f.mk
index 89ad927..03b1be7 100644
--- a/config_cortex_m4f.mk
+++ b/config_cortex_m4f.mk
@@ -17,6 +17,7 @@
 OPT_CFLAGS = -fdata-sections -ffunction-sections
 
 PLATFORM_CFLAGS = -Wno-unused-parameter -nostdinc -ffreestanding -fno-builtin -fsigned-char -fno-common -Wno-main -I$(shell $(CC) -print-search-dirs | $(AWK) '$$1 == "install:" {print $$NF}')include
+PLATFORM_CFLAGS += ARM_MATH_CM4
 
 PLATFORM_CXXFLAGS = $(PLATFORM_CFLAGS) -fno-rtti -fno-exceptions -fno-use-cxa-atexit
 PLATFORM_LDFLAGS = -nostdlib -nostartfiles -nodefaultlibs -Wl,-static,-gc-sections
diff --git a/config_cortex_m7.mk b/config_cortex_m7.mk
index 1da0c03..13f5596 100644
--- a/config_cortex_m7.mk
+++ b/config_cortex_m7.mk
@@ -17,6 +17,7 @@
 OPT_CFLAGS = -fdata-sections -ffunction-sections
 
 PLATFORM_CFLAGS = -Wno-unused-parameter -nostdinc -ffreestanding -fno-builtin -fsigned-char -fno-common -Wno-main -I$(shell $(CC) -print-search-dirs | $(AWK) '$$1 == "install:" {print $$NF}')include
+PLATFORM_CFLAGS += ARM_MATH_CM7
 
 PLATFORM_CXXFLAGS = $(PLATFORM_CFLAGS) -fno-rtti -fno-exceptions -fno-use-cxa-atexit
 PLATFORM_LDFLAGS = -nostdlib -nostartfiles -nodefaultlibs -Wl,-static,-gc-sections