#
# Copyright (c) 1995-2000 The University of Utah and the Flux Group.
# 
# This file is part of the OSKit Linux Glue Libraries, which are free
# software, also known as "open source;" you can redistribute them and/or
# modify them under the terms of the GNU General Public License (GPL),
# version 2, as published by the Free Software Foundation (FSF).
# 
# The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GPL for more details.  You should have
# received a copy of the GPL along with the OSKit; see the file COPYING.  If
# not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
#
ifndef _oskit_linux_fs_makerules_
_oskit_linux_fs_makerules_ = yes

TARGET	= liboskit_linux_fs.a

all: $(TARGET)

SRCDIRS +=	$(OSKIT_SRCDIR)/linux/fs			\
		$(OSKIT_SRCDIR)/linux/src/fs			\
		$(OSKIT_SRCDIR)/linux/src/fs/nls

DEFINES += -DOSKIT_FS

# Generate the list of the per-filesystem obj files from the `filesystems'
# file we generate below.
# The hairy genobjs "function" is to take a dir name, e.g., ext2, and generate
# scoped .o names for all of the .c files in that dir's src directory, e.g.,
# ext2_inode.o, ext2_namei.o, ...
-include filesystems
genobjs = $(patsubst %.c,%.o,						\
	    $(addprefix $(dir)_,					\
	      $(notdir							\
		$(wildcard $(OSKIT_SRCDIR)/linux/src/fs/$(dir)/*.c))))
OBJFILES += $(foreach dir,$(FILESYSTEMS),$(genobjs))

# Implicitly include the fs global.h header file at the top of _all_ sources.
# This header #defines a bunch of global Linux symbols
# to ensure linker namespace cleanliness and avoid conflicts.
OSKIT_CPPFLAGS += -include $(OSKIT_SRCDIR)/linux/fs/global.h
$(OBJFILES): $(OSKIT_SRCDIR)/linux/fs/global.h

# This rule generates a file called `filesystems' which we include to
# define the FILESYSTEMS variable and some rules.
# The FILESYSTEMS var will contain a list of the names of the filesystems
# included according to the <oskit/fs/linux_filesystems.h> file.
# The rules we define are to allow us to build all the filesytem files
# in one directory.
# The problem is that Linux keeps the per-filesytem code in their
# own directories and file names aren't scoped.
# Additionally, the source files do stuff like #include "../fat/tables.h".
# Here, we make rules that scopify the names by making symbolic links
# to the source files,
# and that compile the source files with an additional -I path.
# We link the files to CWD instead of doing `cc -o foo_inode.o foo/inode.c'
# because the -MD gcc flag would make inode.d instead of foo_inode.d.
filesystems: $(OSKIT_SRCDIR)/oskit/fs/linux_filesystems.h
	$(OSKIT_QUIET_MAKE_INFORM) "Generating makefile fragment $@"
	sed -e 's/[(),]/ /g' < $< | $(AWK) -f $(OSKIT_SRCDIR)/linux/fs/filesystems.awk >$@

CLEAN_FILES += filesystems


### Include shared make stuff ###
include $(OSKIT_SRCDIR)/linux/shared/GNUmakerules


# XXX - for debugging
# OSKIT_CFLAGS := $(filter-out -O2, $(OSKIT_CFLAGS))
# OSKIT_CFLAGS += -O

endif