include $(GNUSTEP_MAKEFILES)/common.make TOOL_NAME = decrypt decrypt_OBJC_FILES = decrypt.m LIBRARY_NAME = libDvd libDvd_OBJC_FILES = decss.m include $(GNUSTEP_MAKEFILES)/tool.make include $(GNUSTEP_MAKEFILES)/library.makeThen you type `make' on the command line. We want to understand what happens.
Make will process your GNUmakefile, which includes tool.make, and that will include rules.make. In rules.make make finds the first rule (the one which is executed), which is
all:: before-all internal-all after-allThis means that make will build by default that target all, and that building that target requires building the before-all, internal-all and after-all targets. We ignore the before-all and after-all targets for now, and only concentrate on the core target, which is internal-all.