More Makefile stuff

* Added lib directory; the library will live here
* Added Makefile fragment in the lib dir
* Modified README.directories to include the new dir
* Added lib directory to the fragments the Makefile uses


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@90 7894878c-1315-0410-8ee3-d5d059ff63e0

Makefile

@@ -95,7 +95,7 @@ LIBINCLUDEDIR := $(INCLUDEDIR)/sensors
 # to do this. 
 
 # The subdirectories we need to build things in 
-SRCDIRS := src
+SRCDIRS := src lib
 ifeq ($(I2C),1)
 SRCDIRS += i2c i2c/detect i2c/drivers i2c/eeprom
 endif
@@ -104,13 +104,16 @@ endif
 MKDIR := mkdir -p
 RM := rm -f
 CC := gcc
+BISON := bison
+FLEX := flex
+AR := ar
 
 # Determine the default compiler flags
 # MODCFLAGS is to create in-kernel object files (modules); PROGFLAGS is to
 # create non-kernel object files (which are linked into executables).
 # ARCFLAGS are used to create archive object files (static libraries), and
 # LIBCFLAGS are for shared library objects.
-CFLAGS := -I. -Ii2c -O2 -D LM_SENSORS
+CFLAGS := -I. -Ii2c -O2 -DLM_SENSORS
 
 ifeq ($(DEBUG),1)
 CFLAGS += -DDEBUG
@@ -208,6 +211,9 @@ version:
        	sed -e 's@^\(.*\)\.o:@$*.rd $*.ro Makefile '`dirname $*.rd`/Module.mk':@' > $@
 
 
+%: %.ro
+	$(CC) $(EXLDFLAGS) -o $@ $^
+
 
 # .ao files are used for static archives
 %.ao: %.c
@@ -226,9 +232,6 @@ version:
 	$(CC) -M -MG $(LIBCFLAGS) $< | \
        	sed -e 's@^\(.*\)\.o:@$*.ld $*.lo Makefile '`dirname $*.ld`/Module.mk':@' > $@
 
-%: %.ro
-	$(CC) $(EXLDFLAGS) -o $@ $^
-
 
 # Flex and Bison
 %c: %y

README.directories

@@ -11,4 +11,8 @@ The directories within this package:
   Simon Vogl's i2c module, including any necessary patches, excluding any
   files which are removed by 'make clean'.
 * src
-  Our own code.
+  Our own module code.
+* lib
+  The user-space sensors support library code
+* prog
+  Several supporting programs, some of them use the library, some do not.

kernel/Module.mk

@@ -26,7 +26,7 @@ SRCTARGETS := $(MODULE_DIR)/smbus.o $(MODULE_DIR)/piix4.o $(MODULE_DIR)/isa.o \
               $(MODULE_DIR)/lm78.o $(MODULE_DIR)/sensors.o  \
               $(MODULE_DIR)/i2c-proc.o $(MODULE_DIR)/lm75.o \
               $(MODULE_DIR)/i2c-proc.o $(MODULE_DIR)/gl518sm.o \
-              $(MODULE_DIR)/eeprom.o $(MODULE_DIR)/w83781d.o
+              $(MODULE_DIR)/eeprom.o $(MODULE_DIR)/w83781d.o 
 
 SRCHEADERFILES := $(MODULE_DIR)/sensors.h $(MODULE_DIR)/isa.h \
                $(MODULE_DIR)/smbus.h

lib/Module.mk

@@ -0,0 +1,66 @@
+#  Module.mk - Makefile for a Linux module for reading sensor data.
+#  Copyright (c) 1998  Frodo Looijaard <frodol@dds.nl>
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program 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
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Note that MODULE_DIR (the directory in which this file resides) is a
+# 'simply expanded variable'. That means that its value is substituted
+# verbatim in the rules, until it is redefined. 
+MODULE_DIR := lib
+
+# The main and minor version of the library
+LIBMAINVER := 0
+LIBMINORVER := 0.0
+LIBVER := $(LIBMAINVER).$(LIBMINORVER)
+
+# The static lib name, the shared lib name, and the internal ('so') name of
+# the shared lib.
+LIBSHLIBNAME := libsensors.so.$(LIBVER)
+LIBSTLIBNAME := libsensors.a
+LIBSHSONAME := libsensors.so.$(LIBMAINVER)
+
+LIBTARGETS := $(MODULE_DIR)/$(LIBSTLIBNAME) $(MODULE_DIR)/$(LIBSHLIBNAME)
+
+LIBCSOURCES :=
+LIBSHOBJECTS := $(LIBCSOURCES:.c=.lo) 
+LIBSTOBJECTS := $(LIBCSOURCES:.c=.ao)
+
+LIBHEADERFILES := 
+
+# How to create the shared library
+$(MODULE_DIR)/$(LIBSHLIBNAME): $(LIBSHOBJECTS)
+	$(CC) -shared -Wl,-soname,$(LIBSONAME) -o $@ $< -lc
+
+# And the static library
+$(MODULE_DIR)/$(LIBSTLIBNAME): $(LIBSTOBJECTS)
+	$(RM) $@
+	$(AR) rcvs $@ $^
+
+# Include all dependency files
+INCLUDEFILES += $(LIBCSOURCES:.c=.ld) $(LIBCSOURCES:.c=.ad)
+
+all-lib: $(LIBTARGETS)
+all :: all-lib
+
+install-lib:
+	$(MKDIR) $(LIBDIR) $(LIBINCLUDEDIR)
+	install -o root -g root -m 644 $(LIBTARGETS) $(LIBDIR)
+	install -o root -g root -m 644 $(LIBHEADERFILES) $(LIBINCLUDEDIR)
+install :: install-lib
+
+clean-lib:
+	$(RM) $(LIBTARGETS) $(LIBSHOBJECTS) $(LIBSTOBJECTS)
+	$(RM) $(LIBSHOBJECTS:.lo=.ld) $(LIBSTOBJECTS:.ao=.ad)
+clean :: clean-lib

src/Module.mk

@@ -26,7 +26,7 @@ SRCTARGETS := $(MODULE_DIR)/smbus.o $(MODULE_DIR)/piix4.o $(MODULE_DIR)/isa.o \
               $(MODULE_DIR)/lm78.o $(MODULE_DIR)/sensors.o  \
               $(MODULE_DIR)/i2c-proc.o $(MODULE_DIR)/lm75.o \
               $(MODULE_DIR)/i2c-proc.o $(MODULE_DIR)/gl518sm.o \
-              $(MODULE_DIR)/eeprom.o $(MODULE_DIR)/w83781d.o
+              $(MODULE_DIR)/eeprom.o $(MODULE_DIR)/w83781d.o 
 
 SRCHEADERFILES := $(MODULE_DIR)/sensors.h $(MODULE_DIR)/isa.h \
                $(MODULE_DIR)/smbus.h