CC=clang --target=x86_64-pc-linux-musl
#CC=/usr/musl/bin/musl-gcc
CFLAGS=-Wall -W -Wextra -Werror -Wno-implicit-fallthrough -std=c99 -Ilib -Isqlite -Ielf -I. -Ilzma/api --target=x86_64-pc-linux-musl

ZPMVER:=$(shell git describe --tags --match 'v[0-9]*' | sed -e 's/^v//' | sed -e 's/-g.\+//' | sed -e 's/-/./g')

LZMAFLAGS=-Ilzma/api -Ilzma/tuklib -Ilzma/lzma -Ilzma/common -Ilzma/check -Ilzma/lz -Ilzma/rangecoder -Ilzma/simple -Ilzma/delta -DHAVE_CHECK_CRC64 -DHAVE_CHECK_CRC32 -DHAVE_ENCODER_LZMA2 -DHAVE_DECODER_LZMA2 -DHAVE_MF_BT4

LDFLAGS=-fuse-ld=lld -L. -static

LZMACHECKSRC=lzma/check/check.c lzma/check/crc32_fast.c lzma/check/crc64_fast.c lzma/check/crc32_table.c lzma/check/crc64_table.c
LZMASRC=$(shell ls lzma/lzma/*.c lzma/common/*.c lzma/lz/*.c) $(LZMACHECKSRC) lzma/rangecoder/price_table.c
LZMAOBJ=$(filter-out lzma/common/stream_encoder_mt.o, $(LZMASRC:%.c=%.o))

JSWSRC=lib/jsw/jsw_avltree.c \
lib/jsw/jsw_atree.c \
lib/jsw/jsw_hlib.c \
lib/jsw/jsw_rbtree.c

JSWOBJ=$(JSWSRC:%.c=%.o)
LIBZPMSRC=sha256.c db.c compress.c uncompress.c zpm.c zpm_hash.c \
	  foreach_path.c vercmp.c findpkg.c quote.c dbquery.c script_hash.c \
	  parse.c integ.c seterror.c notes.c

LIBZPMOBJ=$(addprefix lib/, $(LIBZPMSRC:%.c=%.o))

curdir=$(shell pwd)

ZPKGBIN=zpm-addfile zpm-extract zpm-init zpm-vercmp zpm-stat zpm-hash \
	zpm-findpkg zpm-shell zpm-soneed zpm-foreach-path zpm-parse \
	zpm-script zpm-soname zpm-syncfs zpm-packagehash zpm-verify \
	zpm-elftype zpm-quote zpm-note zpm-search

SCRIPTS=zpm zpm-install zpm-merge zpm-list zpm-preserve zpm-test zpm-log \
	zpm-contents zpm-uninstall zpm-pathmod zpm-rmpackage zpm-newpackage \
	zpm-pkg zpm-add zpm-pkgfile zpm-gc zpm-repo zpm-update zpm-confgit
MANPAGES=zpm.8 $(addprefix doc/zpm-, list.8 contents.8 hash.8 quote.8 pathmod.8 )
COMPILED=$(ZPKGBIN)
PROGRAMS=$(SCRIPTS) $(COMPILED)

def: programs
	strip $(ZPKGBIN)

d:
	printf '%s\n' $(LZMAOBJ)
	printf '%s\n' $(PATH)

libzpm.a: $(LIBZPMOBJ) sqlite/sqlite3.o \
	$(LZMAOBJ) \
	$(JSWOBJ)
	ar rcuv $@ $?

package: zpm-$(ZPMVER)-1.zpm

lzmaupdate:
	find xz/src/liblzma -type d -name .deps -prune \
		-o -type f -printf '%P\n' \
		| xargs -IZ echo Z Z Z \
		| xargs printf 'test -e lzma/%s && cp xz/src/liblzma/%s lzma/%s\n' \
		| sh

#lzma/lz/lz_decoder.o: lzma/lz/lz_decoder.c
#lzma/lz/lz_encoder.o: lzma/lz/lz_encoder.c

lzma/%.o: lzma/%.c
	$(CC) $(CFLAGS) $(LZMAFLAGS) -c -o $@ $<

lib/liblzma.a: $(LZMAOBJ)
	ar rcuv $@ $?

lib/libjsw.a: $(JSWOBJ)
	ar rcuv $@ $?

ZPM:= ./zpm -P.

zpm-$(ZPMVER)-1.zpm: programs $(MANPAGES)
	rm -f $@
	$(ZPM) newpackage -C zpm-$(ZPMVER)-1
	$(ZPM) add -v -u root -g root -f $@ -P /sbin zpm-$(ZPMVER)-1 $(sort $(PROGRAMS))
	$(ZPM) add -v -u root -g root -f $@ -P /usr/share/man/man8 -S doc $(MANPAGES)

tarball: zpm-$(ZPMVER)-1.tar.xz

zpm-$(ZPMVER)-1.tar.xz: programs
	rm -f $@
	tar -cJf $@ --transform='s|^|sbin/|' \
		$(PROGRAMS)

lzma.c: mklzma
	sh mklzma

lzma.o: lzma.c
	gcc -std=c99 -Wall -c -o $@ $<

stest: $(ZPKGBIN)
	PATH=$(curdir)/t:$(curdir):$(PATH) t/$(T).t

t/ctap/prove: t/ctap/prove.o
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+

test: $(ZPKGBIN) t/ctap/prove
	@PATH=$(curdir)/t:$(curdir):$(PATH) t/ctap/prove t/*.t

programs: $(ZPKGBIN)

uncompress: uncompress.o 
	$(CC) $(CFLAGS) -o $@ $+ -llzma

zpm-elftype: elf/elftype.c
	$(CC) -Ielf $(CFLAGS) -o $@ $+

zpm-soname: elf/soname.c
	$(CC) -Ielf $(CFLAGS) -o $@ $+

zpm-soneed: elf/needed.c
	$(CC) -Ielf $(CFLAGS) -o $@ $+

zpm-addfile: zpm-addfile.o libzpm.a libelf.a
	$(CC) -Ielf $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-hash: zpm-hash.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-verify: zpm-verify.o t/ctap/ctap.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< t/ctap/ctap.o -lzpm -lelf

zpm-init: zpm-init.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-extract: zpm-extract.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-script: zpm-script.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf
	
zpm-packagehash: zpm-packagehash.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-foreach-path.o: CFLAGS+=-Wno-unused-parameter
zpm-script.o: CFLAGS+=-Wno-unused-parameter

zpm-foreach-path: zpm-foreach-path.o libzpm.a sqlite/sqlite3.h
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-findpkg: zpm-findpkg.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-search: zpm-search.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-note: zpm-note.o libzpm.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf

zpm-syncfs: zpm-syncfs.o libzpm.a libelf.a
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf -lm

zpm-parse: zpm-parse.o lib/parse.o
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+

zpm-quote: zpm-quote.o
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<

db.sql: schema/main.sql schema/syncconflicts.sql schema/syncinfo.sql
	echo 'begin;' > $@
	cat $+ >> $@
	echo 'commit;' >> $@

newdb.c: db.sql
	echo "char createdb[] = {" > $@
	xxd -i < $< >> $@
	echo ", 0};" >> $@

sqlite/sqlite3.o: sqlite/sqlite3.c sqlite/config.h
	$(CC) -O3 -Wall -std=c99 -Ilib -D_HAVE_SQLITE_CONFIG_H=1 -c -o $@ $<

sqlite/extensions.o: sqlite/extensions.c
	$(CC) -O3 -Wall -std=c99 -I. -DSQLITE_CORE=1 -c -o $@ $<

sqlite/shell.o: sqlite/shell.c sqlite/config.h Makefile
	$(CC) -Wall -std=c99 -Ilib \
		-DSQLITE_OMIT_LOAD_EXTENSION=1 \
		'-DSQLITE_SHELL_INIT_PROC(x)=zpm_setup_extensions(x)' \
		-D_POSIX_C_SOURCE=200112L -c -o $@ $<

lib/zpm.o: newdb.c

zpm-vercmp: zpm-vercmp.o lib/vercmp.o
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+
	
zpm-shell: sqlite/sqlite3.o sqlite/shell.o sqlite/extensions.o lib/vercmp.o
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+

libelf.a: elf/libelf.o
	ar rcuv $@ $?

install: $(COMPILED) $(MANPAGES)
	test -d $(DESTDIR)/sbin || install -d $(DESTDIR)/sbin
	install $(PROGRAMS) $(DESTDIR)/sbin
	mkdir -p $(DESTDIR)/usr/share/man/man8
	install -m644 $(MANPAGES) $(DESTDIR)/usr/share/man/man8

scan-prep: clean sqlite/sqlite3.o sqlite/shell.o lib/liblzma.a
	@echo scan-build -v -o report make -j10

clean:
	rm -f *.o sqlite/*.o lib/*.o $(LZMAOBJ) liblzma.a \
		libelf.a libzpm.a zpm-addfile soname \
		*.xz \
		local.db \
		t/ctap/*.o \
		$(ZPKGBIN) \
		db.sql