diff .c, .h, .cpp files only

diff .c, .h, .cpp files only from current directory to $(TRGT_DIR)

find \( -path ./.pc -prune \) -o \( -name '*.cpp' -o -name '*.[ch]' \) -exec diff -u {} $(TRGT_DIR)/{} \;

Finding library dependencies of ELF binary file:
alias arm-ldd='objdump -x a.out | grep NEEDED'