all::

CGIT_VERSION = v0.9.1
CGIT_SCRIPT_NAME = cgit.cgi
CGIT_SCRIPT_PATH = /var/www/htdocs/cgit
CGIT_DATA_PATH = $(CGIT_SCRIPT_PATH)
CGIT_CONFIG = /etc/cgitrc
CACHE_ROOT = /var/cache/cgit
prefix = /usr
libdir = $(prefix)/lib
filterdir = $(libdir)/cgit/filters
docdir = $(prefix)/share/doc/cgit
htmldir = $(docdir)
pdfdir = $(docdir)
mandir = $(prefix)/share/man
SHA1_HEADER = <openssl/sha.h>
GIT_VER = 1.7.12.4
GIT_URL = https://git-core.googlecode.com/files/git-$(GIT_VER).tar.gz
INSTALL = install
MAN5_TXT = $(wildcard *.5.txt)
MAN_TXT  = $(MAN5_TXT)
DOC_MAN5 = $(patsubst %.txt,%,$(MAN5_TXT))
DOC_HTML = $(patsubst %.txt,%.html,$(MAN_TXT))
DOC_PDF  = $(patsubst %.txt,%.pdf,$(MAN_TXT))

# Define NO_STRCASESTR if you don't have strcasestr.
#
# Define NO_OPENSSL to disable linking with OpenSSL and use bundled SHA1
# implementation (slower).
#
# Define NEEDS_LIBICONV if linking with libc is not enough (eg. Darwin).
#
# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
# do not support the 'size specifiers' introduced by C99, namely ll, hh,
# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
# some C compilers supported these specifiers prior to C99 as an extension.
#

#-include config.mak

#
# Platform specific tweaks
#

VERSION: force-version
	@./gen-version.sh "$(CGIT_VERSION)"
-include VERSION

uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
uname_O := $(shell sh -c 'uname -o 2>/dev/null || echo not')
uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')

#
# Let the user override the above settings.
#
-include cgit.conf

#
# Define a way to invoke make in subdirs quietly, shamelessly ripped
# from git.git
#
QUIET_SUBDIR0  = +$(MAKE) -C # space to separate -C and subdir
QUIET_SUBDIR1  =

ifneq ($(findstring $(MAKEFLAGS),w),w)
PRINT_DIR = --no-print-directory
else # "make -w"
NO_SUBDIR = :
endif

ifndef V
	QUIET_CC       = @echo '   ' CC $@;
	QUIET_LINK     = @echo '   ' LINK $@;
	QUIET_SUBDIR0  = +@subdir=
	QUIET_SUBDIR1  = ;$(NO_SUBDIR) echo '   ' SUBDIR $$subdir; \
			 $(MAKE) $(PRINT_DIR) -C $$subdir
	QUIET_TAGS     = @echo '   ' TAGS $@;
	export V
endif

LDFLAGS ?=
CFLAGS ?= -g -Wall
CFLAGS += -Igit
CFLAGS += -DSHA1_HEADER='$(SHA1_HEADER)'
CFLAGS += -DCGIT_VERSION='"$(CGIT_VERSION)"'
CFLAGS += -DCGIT_CONFIG='"$(CGIT_CONFIG)"'
CFLAGS += -DCGIT_SCRIPT_NAME='"$(CGIT_SCRIPT_NAME)"'
CFLAGS += -DCGIT_CACHE_ROOT='"$(CACHE_ROOT)"'

ifeq ($(uname_O),Cygwin)
	NO_STRCASESTR = YesPlease
	NEEDS_LIBICONV = YesPlease
endif

ifeq ($(uname_S),$(filter $(uname_S),FreeBSD OpenBSD))
	# Apparantly libiconv is installed in /usr/local on BSD
	LDFLAGS += -L/usr/local/lib
	CFLAGS += -I/usr/local/include
	NEEDS_LIBICONV = yes
endif

GIT_OPTIONS = prefix=/usr
OBJECTS =

ifdef NO_ICONV
	CFLAGS += -DNO_ICONV
endif
ifdef NO_STRCASESTR
	CFLAGS += -DNO_STRCASESTR
endif
ifdef NO_C99_FORMAT
	CFLAGS += -DNO_C99_FORMAT
endif
ifdef NO_OPENSSL
	CFLAGS += -DNO_OPENSSL
	GIT_OPTIONS += NO_OPENSSL=1
else
	LDLIBS += -lcrypto
endif

ifdef NEEDS_LIBICONV
	LDLIBS += -liconv
endif

LDLIBS += git/libgit.a git/xdiff/lib.a -lz -lpthread

OBJECTS += cgit.o
OBJECTS += cache.o
OBJECTS += cmd.o
OBJECTS += configfile.o
OBJECTS += html.o
OBJECTS += parsing.o
OBJECTS += scan-tree.o
OBJECTS += shared.o
OBJECTS += ui-atom.o
OBJECTS += ui-blob.o
OBJECTS += ui-clone.o
OBJECTS += ui-commit.o
OBJECTS += ui-diff.o
OBJECTS += ui-log.o
OBJECTS += ui-patch.o
OBJECTS += ui-plain.o
OBJECTS += ui-refs.o
OBJECTS += ui-repolist.o
OBJECTS += ui-shared.o
OBJECTS += ui-snapshot.o
OBJECTS += ui-ssdiff.o
OBJECTS += ui-stats.o
OBJECTS += ui-summary.o
OBJECTS += ui-tag.o
OBJECTS += ui-tree.o
OBJECTS += vector.o

dep_files := $(foreach f,$(OBJECTS),$(dir $f).deps/$(notdir $f).d)
dep_dirs := $(addsuffix .deps,$(sort $(dir $OBJECTS)))

$(dep_dirs):
	@mkdir -p $@

missing_dep_dirs := $(filter-out $(wildcard $(dep_dirs)),$(dep_dirs))
dep_file = $(dir $@).deps/$(notdir $@).d
dep_args = -MF $(dep_file) -MMD -MP

.SUFFIXES:

$(OBJECTS): %.o: %.c $(missing_dep_dirs)
	$(QUIET_CC)$(CC) -o $*.o -c $(dep_args) $(CFLAGS) $<

dep_files_present := $(wildcard $(dep_files))
ifneq ($(dep_files_present),)
include $(dep_files_present)
endif

all:: cgit

cgit: VERSION $(OBJECTS) libgit
	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LDLIBS)

libgit:
	$(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) NO_CURL=1 $(GIT_OPTIONS) libgit.a
	$(QUIET_SUBDIR0)git $(QUIET_SUBDIR1) NO_CURL=1 $(GIT_OPTIONS) xdiff/lib.a

test: all
	$(QUIET_SUBDIR0)tests $(QUIET_SUBDIR1) all

install: all
	$(INSTALL) -m 0755 -d $(DESTDIR)$(CGIT_SCRIPT_PATH)
	$(INSTALL) -m 0755 cgit $(DESTDIR)$(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
	$(INSTALL) -m 0755 -d $(DESTDIR)$(CGIT_DATA_PATH)
	$(INSTALL) -m 0644 cgit.css $(DESTDIR)$(CGIT_DATA_PATH)/cgit.css
	$(INSTALL) -m 0644 cgit.png $(DESTDIR)$(CGIT_DATA_PATH)/cgit.png
	$(INSTALL) -m 0755 -d $(DESTDIR)$(filterdir)
	$(INSTALL) -m 0755 filters/* $(DESTDIR)$(filterdir)

install-doc: install-man install-html install-pdf

install-man: doc-man
	$(INSTALL) -m 0755 -d $(DESTDIR)$(mandir)/man5
	$(INSTALL) -m 0644 $(DOC_MAN5) $(DESTDIR)$(mandir)/man5

install-html: doc-html
	$(INSTALL) -m 0755 -d $(DESTDIR)$(htmldir)
	$(INSTALL) -m 0644 $(DOC_HTML) $(DESTDIR)$(htmldir)

install-pdf: doc-pdf
	$(INSTALL) -m 0755 -d $(DESTDIR)$(pdfdir)
	$(INSTALL) -m 0644 $(DOC_PDF) $(DESTDIR)$(pdfdir)

uninstall:
	rm -f $(DESTDIR)$(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
	rm -f $(DESTDIR)$(CGIT_DATA_PATH)/cgit.css
	rm -f $(DESTDIR)$(CGIT_DATA_PATH)/cgit.png

uninstall-doc: uninstall-man uninstall-html uninstall-pdf

uninstall-man:
	@for i in $(DOC_MAN5); do \
	    rm -fv $(DESTDIR)$(mandir)/man5/$$i; \
	done

uninstall-html:
	@for i in $(DOC_HTML); do \
	    rm -fv $(DESTDIR)$(htmldir)/$$i; \
	done

uninstall-pdf:
	@for i in $(DOC_PDF); do \
	    rm -fv $(DESTDIR)$(pdfdir)/$$i; \
	done

doc: doc-man doc-html doc-pdf
doc-man: doc-man5
doc-man5: $(DOC_MAN5)
doc-html: $(DOC_HTML)
doc-pdf: $(DOC_PDF)

%.5 : %.5.txt
	a2x -f manpage $<

$(DOC_HTML): %.html : %.txt
	a2x -f xhtml --stylesheet=cgit-doc.css $<

$(DOC_PDF): %.pdf : %.txt
	a2x -f pdf cgitrc.5.txt

clean: clean-doc
	$(RM) cgit VERSION *.o tags
	$(RM) -r .deps

cleanall: clean
	$(MAKE) -C git clean

clean-doc:
	$(RM) cgitrc.5 cgitrc.5.html cgitrc.5.pdf cgitrc.5.xml cgitrc.5.fo

get-git:
	curl -L $(GIT_URL) | tar -xzf - && rm -rf git && mv git-$(GIT_VER) git

tags:
	$(QUIET_TAGS)find . -name '*.[ch]' | xargs ctags

.PHONY: all cgit get-git libgit force-version
.PHONY: clean clean-doc cleanall
.PHONY: doc doc-html doc-man doc-pdf
.PHONY: install install-doc install-html install-man install-pdf
.PHONY: tags test
.PHONY: uninstall uninstall-doc uninstall-html uninstall-man uninstall-pdf