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BIN = /bin
DEV = /dev
EXTRA_CPP_FLAGS =
# -DOWN_VCS -DOWN_VCSA -DUSE_TTY_GROUP
TTY_GROUP = tty
DEFAULT_HOME = /
DEFAULT_SHELL = $(BIN)/sh
DEFAULT_TERM = dumb
VCS = $(DEV)/vcs
VCSA = $(DEV)/vcsa
H = \#
VCS_LEN = $(shell vcs="$(VCS)" ; echo "$${$(H)vcs}")
VCSA_LEN = $(shell vcsa="$(VCSA)" ; echo "$${$(H)vcsa}")
VCS_VCSA_LEN = $(shell (echo $(VCS_LEN) ; echo $(VCSA_LEN)) | sort -n | tail -n 1)
STR_DEFS = TTY_GROUP DEFAULT_HOME DEFAULT_SHELL DEFAULT_TERM
INT_DEFS = VCS_LEN VCSA_LEN VCS_VCSA_LEN
OPTIMISE = -Os
CPPFLAGS = $(EXTRA_CPP_FLAGS) $(foreach D, $(INT_DEFS), -D'$(D)=$($(D))') $(foreach D, $(STR_DEFS), -D'$(D)="$($(D))"')
LDFLAGS =
CFLAGS = -std=gnu99 -Wall -Wextra
CC_FLAGS = $(CPPFLAGS) $(CFLAGS) $(OPTIMISE)
LD_FLAGS = $(LDFLAGS) $(CFLAGS) $(OPTIMISE)
SRC = cerberus passphrase quit security
OBJ = $(foreach S, $(SRC), obj/$(S).o)
.PHONY: all
all: bin/cerberus
bin/cerberus: $(OBJ)
@mkdir -p bin
$(CC) $(LD_FLAGS) -o "$@" $^
obj/%.o: src/%.c src/%.h
@mkdir -p obj
$(CC) $(CC_FLAGS) -o "$@" -c "$<"
.PHONY: clean
clean:
-rm -r bin obj
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