# Still more severe - delete backup and autosave files, too.
SHELL = /bin/sh
-MAKE = make # BSD doesn't have it as a default.
+
+# If Make doesn't predefine MAKE, set it here.
+@SET_MAKE@
# ==================== Things `configure' Might Edit ====================
# Where to install Emacs and other binaries that people will want to
# run directly (like etags).
-bindir=${exec_prefix}/bin
+bindir=@bindir@
# Where to install architecture-independent data files. ${lispdir}
# and ${etcdir} are subdirectories of this.
-datadir=${prefix}/lib
+datadir=@datadir@
# Where to install and expect the files that Emacs modifies as it
# runs. These files are all architecture-independent. Right now, the
# only such data is the locking directory; ${lockdir} is a
# subdirectory of this.
-statedir=${prefix}/lib
+statedir=@statedir@
# Where to install and expect executable files to be run by Emacs
# rather than directly by users, and other architecture-dependent
# data. ${archlibdir} is a subdirectory of this.
-libdir=${exec_prefix}/lib
+libdir=@libdir@
# Where to install Emacs's man pages, and what extension they should have.
-mandir=${prefix}/man/man1
+mandir=@mandir@
manext=.1
# Where to install and expect the info files describing Emacs. In the
# past, this defaulted to a subdirectory of ${prefix}/lib/emacs, but
# since there are now many packages documented with the texinfo
# system, it is inappropriate to imply that it is part of Emacs.
-infodir=${prefix}/info
+infodir=@infodir@
# Where to find the source code. The source code for Emacs's C kernel is
# expected to be in ${srcdir}/src, and the source code for Emacs's
# set by the configure script's `--srcdir' option.
srcdir=@srcdir@
+# Tell make where to find source files; this is needed for the makefiles.
+VPATH=@srcdir@
+
# ==================== Emacs-specific directories ====================
# These variables hold the values Emacs will actually use. They are
# based on the values of the standard Make variables above.
-@inst_paths@# Where to install the lisp files distributed with
-@inst_paths@# Emacs. This includes the Emacs version, so that the
-@inst_paths@# lisp files for different versions of Emacs will install
-@inst_paths@# themselves in separate directories.
-@inst_paths@lispdir=${datadir}/emacs/${version}/lisp
+# Where to install the lisp files distributed with
+# Emacs. This includes the Emacs version, so that the
+# lisp files for different versions of Emacs will install
+# themselves in separate directories.
+lispdir=@lispdir@
-@inst_paths@# Directories Emacs should search for lisp files specific
-@inst_paths@# to this site (i.e. customizations), before consulting
-@inst_paths@# ${lispdir}. This should be a colon-separated list of
-@inst_paths@# directories.
-@inst_paths@locallisppath=${datadir}/emacs/site-lisp
+# Directories Emacs should search for lisp files specific
+# to this site (i.e. customizations), before consulting
+# ${lispdir}. This should be a colon-separated list of
+# directories.
+locallisppath=@locallisppath@
# Where Emacs will search to find its lisp files. Before
# changing this, check to see if your purpose wouldn't
# better be served by changing locallisppath. This
# should be a colon-separated list of directories.
-lisppath=${locallisppath}:${lispdir}
+lisppath=@lisppath@
# Where Emacs will search for its lisp files while
# building. This is only used during the process of
# colon-separated list of directories.
buildlisppath=${srcdir}/lisp
-@inst_paths@# Where to install the other architecture-independent
-@inst_paths@# data files distributed with Emacs (like the tutorial,
-@inst_paths@# the cookie recipes and the Zippy database). This path
-@inst_paths@# usually contains the Emacs version number, so the data
-@inst_paths@# files for multiple versions of Emacs may be installed
-@inst_paths@# at once.
-@inst_paths@etcdir=${datadir}/emacs/${version}/etc
-
-@inst_paths@# Where to create and expect the locking directory, where
-@inst_paths@# the Emacs locking code keeps track of which files are
-@inst_paths@# currently being edited.
-@inst_paths@lockdir=${statedir}/emacs/lock
-
-@inst_paths@# Where to put executables to be run by Emacs rather than
-@inst_paths@# the user. This path usually includes the Emacs version
-@inst_paths@# and configuration name, so that multiple configurations
-@inst_paths@# for multiple versions of Emacs may be installed at
-@inst_paths@# once.
-@inst_paths@archlibdir=${libdir}/emacs/${version}/${configuration}
-
-# ====================== Developer's configuration =======================
-
-# The following assignments make sense if you're running Emacs on a single
-# machine, one version at a time, and you want changes to the lisp and etc
-# directories in the source tree to show up immediately in your working
-# environment. It saves a great deal of disk space by not duplicating the
-# lisp and etc directories.
-
-@rip_paths@lispdir=${srcdir}/lisp
-@rip_paths@externallispdir=${srcdir}/externallisp
-@rip_paths@locallisppath=${srcdir}/site-lisp:${datadir}/emacs/site-lisp
-@rip_paths@etcdir=${srcdir}/etc
-@rip_paths@lockdir=${srcdir}/lock
-@rip_paths@archlibdir=${srcdir}/lib-src
-@rip_paths@infodir=${srcdir}/info
+# Where to install the other architecture-independent
+# data files distributed with Emacs (like the tutorial,
+# the cookie recipes and the Zippy database). This path
+# usually contains the Emacs version number, so the data
+# files for multiple versions of Emacs may be installed
+# at once.
+etcdir=@etcdir@
+
+# Where to create and expect the locking directory, where
+# the Emacs locking code keeps track of which files are
+# currently being edited.
+lockdir=@lockdir@
+
+# Where to put executables to be run by Emacs rather than
+# the user. This path usually includes the Emacs version
+# and configuration name, so that multiple configurations
+# for multiple versions of Emacs may be installed at
+# once.
+archlibdir=@archlibdir@
+
+# Where to put the docstring file.
+docdir=@docdir@
# ==================== Utility Programs for the Build ====================
# ============================= Targets ==============================
-# Flags passed down to subdirectory makefiles.
-MFLAGS =
-
# Subdirectories to make recursively. `lisp' is not included
# because the compiled lisp files are part of the distribution
# and you cannot remake them without installing Emacs first.
SUBDIR = lib-src src
# The makefiles of the directories in $SUBDIR.
-SUBDIR_MAKEFILES = lib-src/Makefile src/Makefile oldXMenu/Makefile
+SUBDIR_MAKEFILES = lib-src/Makefile src/Makefile oldXMenu/Makefile lwlib/Makefile
# Subdirectories to install, and where they'll go.
# lib-src's makefile knows how to install it, so we don't do that here.
-e 's;\(#.*PATH_EXEC\).*$$;\1 "${archlibdir}";' \
-e 's;\(#.*PATH_INFO\).*$$;\1 "${infodir}";' \
-e 's;\(#.*PATH_DATA\).*$$;\1 "${etcdir}";' \
+ -e 's;\(#.*PATH_DOC\).*$$;\1 "${docdir}";' \
-e 's;\(#.*PATH_LOCK\).*$$;\1 "${lockdir}/";')
@${srcdir}/move-if-change src/paths.h.tmp src/paths.h
.RECURSIVE: ${SUBDIR}
${SUBDIR}: ${SUBDIR_MAKEFILES} FRC
- cd $@; $(MAKE) all ${MFLAGS} \
- CC='${CC}' CFLAGS='${CFLAGS}' MAKE='${MAKE}' \
- prefix='${prefix}' srcdir='${srcdir}/$@' libdir='${libdir}'
-
-## We build the makefiles for the subdirectories here so that we can
-## edit the values for the path variables into them. This means that
-## when the user has built them from this makefile once, they will use
-## the right default values for the path variables.
-lib-src/Makefile: ${srcdir}/lib-src/Makefile.in Makefile
- rm -f lib-src/Makefile.tmp
- @echo "Producing \`lib-src/Makefile' from \`${srcdir}/lib-src/Makefile.in'."
- @(echo "# This file is generated from \`${srcdir}/lib-src/Makefile.in'." ; \
- echo "# If you are thinking about editing it, you should seriously consider" ; \
- echo "# running \`make lib-src/Makefile' at the top of the" ; \
- echo "# Emacs build tree instead, or editing" ; \
- echo "# \`${srcdir}/lib-src/Makefile.in' itself." ; \
- sed < ${srcdir}/lib-src/Makefile.in \
- -e 's|^\(version *=\).*$$|\1'"${version}"'|' \
- -e 's|^\(configname *=\).*$$|\1'"${configuration}"'|' \
- -e 's|^\(prefix *=\).*$$|\1'"${prefix}"'|' \
- -e 's|^\(exec_prefix *=\).*$$|\1'"${exec_prefix}"'|' \
- -e 's|^\(libdir *=\).*$$|\1'"${libdir}"'|' \
- -e 's|^\(srcdir *=\).*$$|\1'"${srcdir}"'/lib-src|' \
- -e 's|^\(VPATH *=\).*$$|\1'"${srcdir}"'/lib-src|' \
- -e 's|^\(archlibdir *=\).*$$|\1'"${archlibdir}"'|' \
- -e 's|^\(ALLOCA *=\).*$$|\1'"${ALLOCA}"'|' \
- -e 's|^\(YACC *=\).*$$|\1'"${YACC}"'|' \
- -e 's|^CC *=.*$$|CC='"${CC}"'|' \
- -e 's|^CFLAGS *=.*$$|CFLAGS='"${CFLAGS}"'|' \
- -e 's|^C_SWITCH_SYSTEM *=.*$$|C_SWITCH_SYSTEM='"${C_SWITCH_SYSTEM}"'|' \
- -e 's|^LOADLIBES *=.*$$|LOADLIBES='"${libsrc_libs}"'|' \
- -e '/^# DIST: /d') > lib-src/Makefile.tmp
- @${srcdir}/move-if-change lib-src/Makefile.tmp lib-src/Makefile
- chmod -w lib-src/Makefile
-
-src/Makefile: ${srcdir}/src/Makefile.in Makefile
- rm -f src/Makefile.tmp
- @echo "Producing \`src/Makefile' from \`${srcdir}/src/Makefile.in'."
- @(echo "# This file is generated from \`${srcdir}/src/Makefile.in'." ; \
- echo "# If you are thinking about editing it, you should seriously consider" ; \
- echo "# running \`make src/Makefile' at the top of the" ; \
- echo "# Emacs build tree instead, or editing" ; \
- echo "# \`${srcdir}/src/Makefile.in' itself." ; \
- sed < ${srcdir}/src/Makefile.in \
- -e 's|^\(srcdir *=\).*$$|\1'"${srcdir}"'/src|' \
- -e 's|^\(VPATH *=\).*$$|\1'"${srcdir}"'/src|' \
- -e 's|^CC *=.*$$|CC='"${CC}"'|' \
- -e 's|^CPP *=.*$$|CPP='"${CPP}"'|' \
- -e 's|^LN_S *=.*$$|LN_S='"${LN_S}"'|' \
- -e 's|^CFLAGS *=.*$$|CFLAGS='"${CFLAGS}"'|' \
- -e 's|^\(LD_SWITCH_X_SITE *=\).*$$|\1'"${LD_SWITCH_X_SITE}"'|' \
- -e '/^# DIST: /d') > src/Makefile.tmp
- @${srcdir}/move-if-change src/Makefile.tmp src/Makefile
- chmod -w src/Makefile
-
-oldXMenu/Makefile: ${srcdir}/oldXMenu/Makefile.in Makefile
- rm -f oldXMenu/Makefile.tmp
- @echo "Producing \`oldXMenu/Makefile' from \`${srcdir}/oldXMenu/Makefile.in'."
- @(echo "# This file is generated from \`${srcdir}/oldXMenu/Makefile.in'." ; \
- echo "# If you are thinking about editing it, you should seriously consider" ; \
- echo "# running \`make oldXMenu/Makefile' at the top of the" ; \
- echo "# Emacs build tree instead, or editing" ; \
- echo "# \`${srcdir}/oldXMenu/Makefile.in' itself." ; \
- sed < ${srcdir}/oldXMenu/Makefile.in \
- -e 's|^\(srcdir *=\).*$$|\1'"${srcdir}"'/oldXMenu|' \
- -e 's|^\(VPATH *=\).*$$|\1'"${srcdir}"'/oldXMenu|' \
- -e 's|^\(C_SWITCH_X_SITE *=\).*$$|\1'"${C_SWITCH_X_SITE}"'|' \
- -e 's|^CC *=.*$$|CC='"${CC}"'|' \
- -e 's|^DEFS *=.*$$|DEFS='"${DEFS}"'|' \
- -e '/^# DIST: /d') > oldXMenu/Makefile.tmp
- @${srcdir}/move-if-change oldXMenu/Makefile.tmp oldXMenu/Makefile
- chmod -w oldXMenu/Makefile
-
-Makefile:
+ cd $@; $(MAKE) all $(MFLAGS) \
+ CC='${CC}' CFLAGS='${CFLAGS}' CPPFLAGS='${CPPFLAGS}' \
+ LDFLAGS='${LDFLAGS}' MAKE='${MAKE}'
+
+Makefile: Makefile.in config.status
+ ./config.status
+
+src/Makefile: src/Makefile.in.in config.status
+ ./config.status
+
+lib-src/Makefile: lib-src/Makefile.in config.status
+ ./config.status
+
+oldXMenu/Makefile: oldXMenu/Makefile.in config.status
+ ./config.status
+
+lwlib/Makefile: lwlib/Makefile.in config.status
./config.status
# ==================== Installation ====================
## On AIX, use tar xBf.
## On Xenix, use tar xpf.
+.PHONY: install do-install mkdir
+
## We delete each directory in ${COPYDESTS} before we copy into it;
## that way, we can reinstall over directories that have been put in
## place with their files read-only (perhaps because they are checked
## into RCS). In order to make this safe, we make sure that the
## source exists and is distinct from the destination.
-install: all do-install
+## We don't depend on `all', but rather on ${SUBDIR}, so that we won't
+## ever modify src/paths.h.
+install: ${SUBDIR} do-install install-arch-dep install-arch-indep;
### Note that we copy the DOC-* files from the build etc directory
### as well as lots of things from ${srcdir}/etc.
-do-install: mkdir
+install-arch-dep: mkdir
(cd lib-src; \
- $(MAKE) install ${MFLAGS} prefix=${prefix} \
+ $(MAKE) install $(MFLAGS) prefix=${prefix} \
exec_prefix=${exec_prefix} bindir=${bindir} libdir=${libdir} \
archlibdir=${archlibdir})
+ ${INSTALL_PROGRAM} src/emacs ${bindir}/emacs-${version}
+ -chmod 1755 ${bindir}/emacs-${version}
+ rm -f ${bindir}/emacs
+ -ln ${bindir}/emacs-${version} ${bindir}/emacs
+
+### Note that we copy the DOC-* files from the build etc directory
+### as well as lots of things from ${srcdir}/etc.
+install-arch-indep: mkdir
-set ${COPYDESTS} ; \
for dir in ${COPYDIR} ; do \
if [ `(cd $$1 && pwd)` != `(cd $${dir} && pwd)` ] ; then \
[ -d $${dir} ] \
&& [ `(cd $${dir} && /bin/pwd)` != `(cd $${dest} && /bin/pwd)` ] \
&& (echo "Copying $${dir}..." ; \
- (cd $${dir}; tar -cf - . )|(cd $${dest};umask 0; tar -xvf - ); \
+ (cd $${dir}; tar -cf - . )|(cd $${dest};umask 022; tar -xvf - ); \
for subdir in `find $${dest} -type d ! -name RCS -print` ; do \
rm -rf $${subdir}/RCS ; \
rm -rf $${subdir}/CVS ; \
rm -f $${subdir}/*~ ; \
done) ; \
done
- if [ `(cd ./etc; /bin/pwd)` != `(cd ${srcdir}/etc; /bin/pwd)` ]; \
+ if [ `(cd ./etc; /bin/pwd)` != `(cd ${docdir}; /bin/pwd)` ]; \
then \
echo "Copying etc/DOC* ..." ; \
- (cd etc; tar -cf - DOC*)|(cd ${etcdir}; umask 0; tar -xvf - ); \
+ (cd etc; tar -cf - DOC*)|(cd ${docdir}; umask 0; tar -xvf - ); \
else true; fi
+ thisdir=`pwd`; \
if [ `(cd ${srcdir}/info && /bin/pwd)` != `(cd ${infodir} && /bin/pwd)` ]; \
- then (cd ${srcdir}/info ; \
- if [ ! -f ${infodir}/dir ] && [ -f dir ]; then \
- ${INSTALL_DATA} dir ${infodir}/dir ; \
- fi ; \
- for f in cl* emacs* forms* info* vip* ; do \
- ${INSTALL_DATA} $$f ${infodir}/$$f ; \
- done); \
+ then \
+ (cd ${srcdir}/info ; \
+ if [ ! -f ${infodir}/dir ] && [ -f dir ]; then \
+ (cd $${thisdir}; ${INSTALL_DATA} ${srcdir}/info/dir ${infodir}/dir); \
+ fi ; \
+ for f in cl* emacs* forms* gnus* info* sc* vip* ; do \
+ (cd $${thisdir}; ${INSTALL_DATA} ${srcdir}/info/$$f ${infodir}/$$f); \
+ done); \
else true; fi
- cd ${srcdir}/etc; for page in emacs etags ctags ; do \
- ${INSTALL_DATA} $${page}.1 ${mandir}/$${page}${manext} ; \
+ thisdir=`pwd`; cd ${srcdir}/etc; for page in emacs etags ctags ; do \
+ (cd $${thisdir}; ${INSTALL_DATA} ${srcdir}/etc/$${page}.1 ${mandir}/$${page}${manext}); \
done
- ${INSTALL_PROGRAM} src/emacs ${bindir}/emacs-${version}
- chmod 1755 ${bindir}/emacs-${version}
- rm -f ${bindir}/emacs
- ln ${bindir}/emacs-${version} ${bindir}/emacs
### Build all the directories we're going to install Emacs in. Since
### we may be creating several layers of directories (for example,
./lib-src/make-path ${COPYDESTS} ${lockdir} ${infodir} ${mandir} \
${bindir} ${datadir} ${libdir} \
`echo ${locallisppath} | sed 's/:/ /'`
- chmod 777 ${COPYDESTS} ${lockdir}
+ -chmod 777 ${lockdir}
### Delete all the installed files that the `install' target would
### create (but not the noninstalled files such as `make all' would
### Don't delete the lisp and etc directories if they're in the source tree.
uninstall:
(cd lib-src; \
- $(MAKE) ${MFLAGS} uninstall \
+ $(MAKE) $(MFLAGS) uninstall \
prefix=${prefix} exec_prefix=${exec_prefix} \
bindir=${bindir} libdir=${libdir} archlibdir=${archlibdir})
for dir in ${lispdir} ${etcdir} ; do \
# ==================== Cleaning up and miscellanea ====================
+.PHONY: mostlyclean clean distclean realclean extraclean
+
### `mostlyclean'
### Like `clean', but may refrain from deleting a few files that people
### normally don't want to recompile. For example, the `mostlyclean'
### target for GCC does not delete `libgcc.a', because recompiling it
### is rarely necessary and takes a lot of time.
mostlyclean: FRC.mostlyclean
- (cd src; make ${MFLAGS} mostlyclean)
- (cd oldXMenu; make ${MFLAGS} mostlyclean)
- (cd lib-src; make ${MFLAGS} mostlyclean)
- (cd man; make ${MFLAGS} mostlyclean)
+ (cd src; $(MAKE) $(MFLAGS) mostlyclean)
+ (cd oldXMenu; $(MAKE) $(MFLAGS) mostlyclean)
+ (cd lwlib; $(MAKE) $(MFLAGS) mostlyclean)
+ (cd lib-src; $(MAKE) $(MFLAGS) mostlyclean)
+ -(cd man; $(MAKE) $(MFLAGS) mostlyclean)
### `clean'
### Delete all files from the current directory that are normally
###
### Delete `.dvi' files here if they are not part of the distribution.
clean: FRC.clean
- (cd src; make ${MFLAGS} clean)
- (cd oldXMenu; make ${MFLAGS} clean)
- (cd lib-src; make ${MFLAGS} clean)
- (cd man; make ${MFLAGS} clean)
+ (cd src; $(MAKE) $(MFLAGS) clean)
+ (cd oldXMenu; $(MAKE) $(MFLAGS) clean)
+ (cd lwlib; $(MAKE) $(MFLAGS) clean)
+ (cd lib-src; $(MAKE) $(MFLAGS) clean)
+ -(cd man; $(MAKE) $(MFLAGS) clean)
### `distclean'
### Delete all files from the current directory that are created by
top_distclean=\
rm -f config.status build-install ; \
rm -f Makefile ${SUBDIR_MAKEFILES} ; \
- (cd lock ; rm *)
+ (cd lock ; rm -f *)
distclean: FRC.distclean
- (cd src; make ${MFLAGS} distclean)
- (cd oldXMenu; make ${MFLAGS} distclean)
- (cd lib-src; make ${MFLAGS} distclean)
- (cd man; make ${MFLAGS} distclean)
+ (cd src; $(MAKE) $(MFLAGS) distclean)
+ (cd oldXMenu; $(MAKE) $(MFLAGS) distclean)
+ (cd lwlib; $(MAKE) $(MFLAGS) distclean)
+ (cd lib-src; $(MAKE) $(MFLAGS) distclean)
+ (cd man; $(MAKE) $(MFLAGS) distclean)
${top_distclean}
### anything that needs to exist in order to run `configure' and then
### begin to build the program.
realclean: FRC.realclean
- (cd src; make ${MFLAGS} realclean)
- (cd oldXMenu; make ${MFLAGS} realclean)
- (cd lib-src; make ${MFLAGS} realclean)
- (cd man; make ${MFLAGS} realclean)
+ (cd src; $(MAKE) $(MFLAGS) realclean)
+ (cd oldXMenu; $(MAKE) $(MFLAGS) realclean)
+ (cd lwlib; $(MAKE) $(MFLAGS) realclean)
+ (cd lib-src; $(MAKE) $(MFLAGS) realclean)
+ -(cd man; $(MAKE) $(MFLAGS) realclean)
${top_distclean}
### This doesn't actually appear in the coding standards, but Karl
### the coding standards seem to come from. It's like distclean, but
### it deletes backup and autosave files too.
extraclean:
- for i in ${SUBDIR}; do (cd $$i; $(MAKE) ${MFLAGS} extraclean); done
+ for i in ${SUBDIR}; do (cd $$i; $(MAKE) $(MFLAGS) extraclean); done
-(cd lock; rm *)
-rm config.status config-tmp-*
-rm -f *~ \#*
SOURCES = ChangeLog GETTING.GNU.SOFTWARE INSTALL Makefile.in PROBLEMS \
README build-install.in configure make-dist move-if-change
+.PHONY: unlock relock
+
unlock:
chmod u+w $(SOURCES) cpp/*
-(cd elisp; chmod u+w Makefile README *.texi)
- (cd etc; make unlock)
- (cd lib-src; make unlock)
- (cd lisp; make unlock)
+ (cd etc; $(MAKE) $(MFLAGS) unlock)
+ (cd lib-src; $(MAKE) $(MFLAGS) unlock)
+ (cd lisp; $(MAKE) $(MFLAGS) unlock)
(cd lisp/term; chmod u+w README *.el)
(cd man; chmod u+w *texi* ChangeLog split-man)
(cd oldXMenu; chmod u+w *.[ch] Makefile README)
- (cd src; make unlock)
+ (cd lwlib; chmod u+w *.[ch] Makefile README)
+ (cd src; $(MAKE) $(MFLAGS) unlock)
relock:
chmod u-w $(SOURCES) cpp/*
-(cd elisp; chmod u-w Makefile README *.texi)
- (cd etc; make relock)
- (cd lib-src; make relock)
- (cd lisp; make relock)
+ (cd etc; $(MAKE) $(MFLAGS) relock)
+ (cd lib-src; $(MAKE) $(MFLAGS) relock)
+ (cd lisp; $(MAKE) $(MFLAGS) relock)
(cd lisp/term; chmod u+w README *.el)
(cd man; chmod u+w *texi* ChangeLog split-man)
(cd oldXMenu; chmod u+w *.[ch] Makefile README)
- (cd src; make relock)
+ (cd lwlib; chmod u+w *.[ch] Makefile README)
+ (cd src; $(MAKE) $(MFLAGS) relock)
TAGS tags: lib-src
(cd ${srcdir}/src; \
dist:
cd ${srcdir}; make-dist
-info:
- (cd ${srcdir}/man; make ${MFLAGS} info)
+.PHONY: info dvi dist check
+force-info:
+info: force-info
+ (cd ${srcdir}/man; $(MAKE) $(MFLAGS) info)
dvi:
- (cd ${srcdir}/man; make ${MFLAGS} dvi)
+ (cd ${srcdir}/man; $(MAKE) $(MFLAGS) dvi)
HCoop / bpt / emacs.git / blobdiff