revlog: use an explicit config option to enable mmap usage for index
We replace the `experimental.mmapindexthreshold` with two options:
The `storage.revlog.mmap.index` is a boolean option to enable or disable the
feature. The `storage.revlog.mmap.index:size-threshold` is a bytes option that
control when we will be using mmap instead of plain reading.
TARGET = chg
SRCS = chg.c hgclient.c procutil.c util.c
OBJS = $(SRCS:.c=.o)
CFLAGS ?= -O2 -Wall -Wextra -pedantic -g
CPPFLAGS ?= -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE
override CFLAGS += -std=gnu99
ifdef HGPATH
override CPPFLAGS += -DHGPATH=\"$(HGPATH)\"
endif
ifdef HGPATHREL
override CPPFLAGS += -DHGPATHREL=\"$(HGPATHREL)\"
endif
DESTDIR =
PREFIX = /usr/local
MANDIR = $(PREFIX)/share/man/man1
.PHONY: all
all: $(TARGET)
$(TARGET): $(OBJS)
$(CC) $(LDFLAGS) -o $@ $(OBJS)
chg.o: hgclient.h procutil.h util.h
hgclient.o: hgclient.h procutil.h util.h
procutil.o: procutil.h util.h
util.o: util.h
.PHONY: install
install: $(TARGET)
install -d "$(DESTDIR)$(PREFIX)"/bin
install -m 755 "$(TARGET)" "$(DESTDIR)$(PREFIX)"/bin
install -d "$(DESTDIR)$(MANDIR)"
install -m 644 chg.1 "$(DESTDIR)$(MANDIR)"
.PHONY: clean
clean:
$(RM) $(OBJS)
.PHONY: distclean
distclean:
$(RM) $(OBJS) $(TARGET)