make

display the default rules

make -p -f /dev/null

in order to support Java, define a new suffix rule


.SUFFIXES : .java .class
                                    

                                    .java.class:
                                    

                                         javac -g $<

append a string to a variable

variable += more

or

variable := $(variable) more

discrepancies between clearmake -C gnu and make

clearmake accepts that there is no space after ifeq but make fails

 ifeq($(AW_VER),AW_4.3)
                                    

                                        AIM_IMPORT_LIB = $(AIM_IMPORT_ROOT)/lib_$(ARCH)
                                    

                                    else
                                    

                                        AIM_IMPORT_LIB = $(AIM_IMPORT_ROOT)/lib
                                    

                                    endif