+
+periph ?= /opt/STM32F4xx_StdPeriph_Driver
+discovery ?= /opt/STM32F4-Discovery_FW_V1.1.0
+
+usbcore ?= $(discovery)/Libraries/STM32_USB_Device_Library/Core
+usbsrc ?= $(usbcore)/src
+otginc ?= /opt/STM32F4-Discovery_FW_V1.1.0/Libraries/STM32_USB_OTG_Driver/inc
+otgsrc ?= /opt/STM32F4-Discovery_FW_V1.1.0/Libraries/STM32_USB_OTG_Driver/src
+
+pincs ?= -I$(periph)/inc -I$(usbcore)/inc -I$(otginc) -I$(discovery)/Libraries/CMSIS/ST/STM32F4xx/Include -I$(discovery)/Libraries/CMSIS/Include -Dassert_param\(x\)= -DUSE_USB_OTG_FS -I/opt/STM32F4-Discovery_FW_V1.1.0/Utilities/STM32F4-Discovery
+psrc ?= /opt/STM32F4xx_StdPeriph_Driver/src
+
+