ECEN 5013 Spring 2016

Diana Southard

Makefile Targets

The makefile supports the following targets:

• make build
• make %.o
• make compile-all
• make %.asm
• make %.S
• make upload
• make test
• make clean

These operations are explained below.

make build

This will compile all object files and links. All output files will appear in a new directory labeled output with the exception of the executable project which will remain in the root directory.

make %.o

This will allow to individually compile without linking any single object specified.

make compile-all

This will compile all objects without linking them.

make %.asm
make %.S

This will generate the assemply output of any single file.

make upload

This will take an executable and copy it over to a release directory on the BeagleBone using scp. Connection information regarding the BeagleBone is stored in the Makefile using a macro.

make test

This will compile the project using a test source which tests all functions in memory.h.

make clean

This will remove all compiled objects, executables, and build output files. It will also remove the output directory, if created.

CFLAGS

-O0 							// This level turns off optimization entirely
-g 								// Adds debugging info to program
-Wall 							// Enables all compiler's warning messages
-std=c99						// Determines c99 Standard as the language
-I$(PROJECT1_DIR)/inc/			// Includes header file for compiler
-fno-builtin 					// Directs compiler to ignore built-in functions
-fno-builtin-memcpy				// Directs compiler to ignore built-in memcpy function
-fno-builtin-memmove			// Directs compiler to ignore built-in memmove function

LDFLAGS

-Wl,-Map=$(OUTPUT_DIR)/$@.map	 // Enables linker maps

• armv7l: BeagleBone Black
• x86_64: Linux/Ubuntu (Native PC)

• size: When the project is compiled using the build target, the gcc size functionality will provide a build report of code size.