# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.  This file is offered as-is,
# without any warranty.


# The package path prefix, if you want to install to another root, set DESTDIR to that root
PREFIX = /usr
# The library path excluding prefix
LIB = /lib
# The resource path excluding prefix
DATA = /share
# The library header path excluding prefix
INCLUDE = /include
# The library path including prefix
LIBDIR = $(PREFIX)$(LIB)
# The resource path including prefix
DATADIR = $(PREFIX)$(DATA)
# The library header path including prefix
INCLUDEDIR = $(PREFIX)$(INCLUDE)
# The generic documentation path including prefix
DOCDIR = $(DATADIR)/doc
# The info manual documentation path including prefix
INFODIR = $(DATADIR)/info
# The license base path including prefix
LICENSEDIR = $(DATADIR)/licenses

# The name of the package as it should be installed
PKGNAME = libpassphrase

# Options with which to compile the library
OPTIONS = PASSPHRASE_METER
# PASSPHRASE_ECHO:       Do not hide the passphrase
# PASSPHRASE_STAR:       Use "*" for each character instead of no echo
# PASSPHRASE_TEXT:       Use "(empty)" and "(not empty)" instead of no echo
# PASSPHRASE_REALLOC:    Soften security by using `realloc`
# PASSPHRASE_MOVE:       Enable move of point
# PASSPHRASE_INSERT:     Enable insert mode
# PASSPHRASE_OVERRIDE:   Enable override mode
# PASSPHRASE_DELETE:     Enable reversed erase command
# PASSPHRASE_CONTROL:    Enable use of control key combinations
# PASSPHRASE_DEDICATED:  Enable use of dedicated keys
# DEFAULT_INSERT:        Use insert mode as default
# PASSPHRASE_INVALID:    Prevent duplication of non-initialised memory
# PASSPHRASE_METER:      Enable passphrase strength meter.

# Text to use instead of "*"
PASSPHRASE_STAR_CHAR      = *
# Text to use instead of "(empty)"
PASSPHRASE_TEXT_EMPTY     = (empty)
# Text to use instead of "(not empty)"
PASSPHRASE_TEXT_NOT_EMPTY = (not empty)

QUOTED_OPTIONS = PASSPHRASE_STAR_CHAR PASSPHRASE_TEXT_EMPTY PASSPHRASE_TEXT_NOT_EMPTY


# Optimisation settings for C code compilation
OPTIMISE = -Os
# Warnings settings for C code compilation
WARN = -Wall -Wextra -Wdouble-promotion -Wformat=2 -Winit-self -Wmissing-include-dirs            \
       -Wtrampolines -Wfloat-equal -Wshadow -Wmissing-prototypes -Wmissing-declarations          \
       -Wredundant-decls -Wnested-externs -Winline -Wno-variadic-macros -Wsync-nand              \
       -Wunsafe-loop-optimizations -Wcast-align -Wstrict-overflow -Wdeclaration-after-statement  \
       -Wundef -Wbad-function-cast -Wcast-qual -Wwrite-strings -Wlogical-op -Waggregate-return   \
       -Wstrict-prototypes -Wold-style-definition -Wpacked -Wvector-operation-performance        \
       -Wunsuffixed-float-constants -Wsuggest-attribute=const -Wsuggest-attribute=noreturn       \
       -Wsuggest-attribute=pure -Wsuggest-attribute=format -Wnormalized=nfkc -Wconversion        \
       -fstrict-aliasing -fstrict-overflow -fipa-pure-const -ftree-vrp -fstack-usage             \
       -funsafe-loop-optimizations

# The C standard for C code compilation
STD = gnu99
# C preprocessor flags
CPPFLAGS_ = $(foreach D, $(OPTIONS), -D'$(D)=1') $(foreach D, $(QUOTED_OPTIONS), -D'$(D)="$($(D))"')
# C compiling flags
CFLAGS_ = -std=$(STD) $(WARN)
# Linking flags
LDFLAGS_ = 

# Flags to use when compiling and assembling
CC_FLAGS = $(CPPFLAGS_) $(CFLAGS_) $(OPTIMISE)
# Flags to use when linking
LD_FLAGS = $(LDFLAGS_) $(CFLAGS_) $(OPTIMISE)


# Object files for the library
OBJ_ = passphrase echoes wipe
OBJ = $(foreach O,$(OBJ_),obj/$(O).o)



.PHONY: default
default: lib info

.PHONY: all
all: lib test doc

.PHONY: doc
doc: info pdf ps dvi

.PHONY: lib
lib: libpassphrase

.PHONY: libpassphrase
libpassphrase: so a

.PHONY: so
so: bin/libpassphrase.so

.PHONY: a
a: bin/libpassphrase.a

.PHONY: test
test: bin/test

bin/test: bin/libpassphrase.so obj/test.o
	$(CC) $(LD_FLAGS) -Lbin -lpassphrase -o "$@" obj/test.o $(LDFLAGS)

obj/test.o: src/test.c src/*.h
	@mkdir -p "$(shell dirname "$@")"
	$(CC) $(CC_FLAGS) -o "$@" -c "$<" $(CFLAGS) $(CPPFLAGS)

bin/libpassphrase.so: $(OBJ)
	@mkdir -p bin
	$(CC) $(LD_FLAGS) -shared -Wl,-soname,libpassphrase.so -o "$@" $^ $(LDFLAGS)

bin/libpassphrase.a: $(OBJ)
	@mkdir -p bin
	ar rcs "$@" $^

obj/%.o: src/%.c src/*.h
	@mkdir -p "$(shell dirname "$@")"
	$(CC) $(CC_FLAGS) -fPIC -o "$@" -c "$<" $(CFLAGS) $(CPPFLAGS)

.PHONY: info
info: bin/libpassphrase.info
bin/%.info: info/%.texinfo
	@mkdir -p bin
	makeinfo "$<"
	mv $*.info $@

.PHONY: pdf
pdf: bin/libpassphrase.pdf
bin/%.pdf: info/%.texinfo info/fdl.texinfo
	@mkdir -p obj/pdf bin
	cd obj/pdf && texi2pdf ../../$< < /dev/null
	mv obj/pdf/$*.pdf $@

.PHONY: dvi
dvi: bin/libpassphrase.dvi
bin/%.dvi: info/%.texinfo info/fdl.texinfo
	@mkdir -p obj/dvi bin
	cd obj/dvi && $(TEXI2DVI) ../../$< < /dev/null
	mv obj/dvi/$*.dvi $@

.PHONY: ps
ps: bin/libpassphrase.ps
bin/%.ps: info/%.texinfo info/fdl.texinfo
	@mkdir -p obj/ps bin
	cd obj/ps && texi2pdf --ps ../../$< < /dev/null
	mv obj/ps/$*.ps $@


.PHONY: install
install: install-base install-info

.PHONY: install
install-all: install-base install-doc

.PHONY: install-base
install-base: install-so install-a install-header install-license

.PHONY: install-lib
install-lib: install-so install-a install-header

.PHONY: install-so
install-so: bin/libpassphrase.so
	install -dm755 -- "$(DESTDIR)$(LIBDIR)"
	install  -m755 -- bin/libpassphrase.so "$(DESTDIR)$(LIBDIR)"

.PHONY: install-a
install-a: bin/libpassphrase.a
	install -dm755 -- "$(DESTDIR)$(LIBDIR)"
	install  -m644 -- bin/libpassphrase.a "$(DESTDIR)$(LIBDIR)"

.PHONY: install-header
install-header:
	install -dm755 -- "$(DESTDIR)$(INCLUDEDIR)"
	install  -m755 -- src/passphrase.h "$(DESTDIR)$(INCLUDEDIR)"

.PHONY: install-license
install-license:
	install -dm755 -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)"
	install  -m644 -- COPYING LICENSE "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)"

.PHONY: install-doc
install-doc: install-info install-pdf install-ps install-dvi

.PHONY: install-info
install-info: bin/libpassphrase.info
	install -dm755 -- "$(DESTDIR)$(INFODIR)"
	install  -m644 -- "$<" "$(DESTDIR)$(INFODIR)/$(PKGNAME).info"

.PHONY: install-pdf
install-pdf: bin/libpassphrase.pdf
	install -dm755 -- "$(DESTDIR)$(DOCDIR)"
	install  -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf"

.PHONY: install-ps
install-ps: bin/libpassphrase.ps
	install -dm755 -- "$(DESTDIR)$(DOCDIR)"
	install  -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps"

.PHONY: install-dvi
install-dvi: bin/libpassphrase.dvi
	install -dm755 -- "$(DESTDIR)$(DOCDIR)"
	install  -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi"


.PHONY: uninstall
uninstall:
	-rm -- "$(DESTDIR)$(LIBDIR)/libpassphrase.so"
	-rm -- "$(DESTDIR)$(LIBDIR)/libpassphrase.a"
	-rm -- "$(DESTDIR)$(INCLUDEDIR)/passphrase.h"
	-rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/COPYING"
	-rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/LICENSE"
	-rmdir -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)"
	-rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info"
	-rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).pdf"
	-rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).ps"
	-rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).dvi"


.PHONY: clean
clean:
	-rm -r bin obj