#*********************************************************************
#
#                         (C) 2001-07 Justin Couch
#                         http://www.vlc.com.au/~justin/
#
# Lowest level common makefile for both native and Java code
# 
# Author: Justin Couch
# Version: $Revision: 1.2 $
#
#*********************************************************************

#
# Directories for standard stuff
#
include $(PROJECT_ROOT)/make/Makefile.inc	 

NATIVE_DEV_ROOT = $(SRC_DIR)/native

NATIVE_SRC_DIR   = $(NATIVE_DEV_ROOT)
3RDPARTY_DLL_DIR = dll
DESTINATION      = obj
LIB_DESTINATION  = bin
JNI_HEADER_DIR   = $(JAVA_HOME)/include

#
# Built up tool information
#
CC=gcc
CFLAGS=
INCLUDE_LIST=$(INCLUDES) $(INCLUDE_DIR) $(JNI_HEADER_DIR) 

EMPTY =
SPACE = $(EMPTY) $(EMPTY)

OS_NAME=$(shell uname)
ifeq (, $(strip $(findstring CYGWIN, $(OS_NAME))))
  PATH_SEP=':'
  LIB_SUFFIX=so
  LIB_PREFIX=lib
  INCLUDE_LIST+=$(JNI_HEADER_DIR)/linux
  CC_LINK_OPTIONS = -Wl -shared $(CFLAGS)
  ifdef LIBRARY_3RDPARTY
    3RDPARTY_LIBS = $(patsubst %,-l%, $(LIBRARY_3RDPARTY))
  endif
else
  PATH_SEP=';'
  LIB_SUFFIX=dll
  LIB_PREFIX=
  INCLUDE_LIST+=$(JNI_HEADER_DIR)/win32 /usr/include/win32api
  CFLAGS +=-D_WIN32 
  CC_LINK_OPTIONS = -shared $(CFLAGS) -L$(3RDPARTY_DLL_DIR)
  ifdef LIBRARY_3RDPARTY
    3RDPARTY_LIBS = $(patsubst %,-l%, $(LIBRARY_3RDPARTY))
  endif
endif

INCS=$(subst $(SPACE)$(SPACE),$(SPACE),$(INCLUDE_LIST))
INC_DIRS=$(subst $(SPACE),$(SPACE)-I,$(INCS))

#
# Option listing for the various commands
#
CC_OPTIONS = -c -O2 $(INC_DIRS) $(CFLAGS)

#
# Build rules.
#

ifdef LIBRARY
  LIB_DIR   = $(DESTINATION)/$(LIBRARY)
  OBJ_FILE_LIST = $(SOURCE_FILES:%.c=%.o)
  OBJ_FILES = $(SOURCE_FILES:%.c=$(DESTINATION)/$(LIBRARY)/%.o)
  LIB_FILES = $(LIB_DESTINATION)/$(LIB_PREFIX)$(LIBRARY).$(LIB_SUFFIX)
endif

SOURCE_FILES  = $(filter  %.c,$(C_SOURCE))

LIB_LIST_CLEAN = $(patsubst %,$(NATIVE_SRC_DIR)/%/.clean,$(LIBRARY_LIST))
LIB_LIST_BUILD = $(patsubst %,$(NATIVE_SRC_DIR)/%/.build,$(LIBRARY_LIST))


#
# General build rules
#
  
# Rule 0. Applied when make is called without targets.
all: $(LIB_DIR) $(LIB_DESTINATION) $(OBJ_FILES) $(LIB_FILES)

# Rule 1. If the destination dir is missing then create it
$(LIB_DIR) :
	$(PRINT) Missing object dir. Creating $(LIB_DIR)
	$(MAKEDIR) $(LIB_DIR)

# Rule 1. If the destination dir is missing then create it
$(LIB_DESTINATION) :
	$(PRINT) Missing library output dir. Creating $(LIB_DESTINATION)
	$(MAKEDIR) $(LIB_DESTINATION)

# Rule 2. Change ".build" tag to "Makefile", thus call the library makefile 
# which in turn recalls this makefile with target all (rule 10).
%.build : 
	$(PRINT) Building directory $(subst .build,' ',$@)
	$(MAKE) -k -f $(subst .build,Makefile,$@) all

# Rule 3. Call rule 2 for every package
buildall : $(LIB_LIST_BUILD)               
	$(PRINT) Completed native libraries.

#
# Specific dependency build rules
#

# Rule 4. Building a .o object file from a .java file
$(LIB_DIR)/%.o : $(NATIVE_DIR)/$(LIBRARY)/%.c
	$(PRINT) Compiling $*.c
	$(CC) $(CC_OPTIONS) $< -o $@

# Rule 5. Building a .o file from a .c file. Invokes rule 4.
%.o : $(NATIVE_DIR)/$(LIBRARY)/%.c
	$(PRINT) creating $(LIB_DIR)/$(LIBRARY)
	$(MAKE) -k $(LIB_DIR)/$@

# Rule 6. Building a .dll or .so from .o files.
$(LIB_DESTINATION)/$(LIB_PREFIX)$(LIBRARY).$(LIB_SUFFIX): $(OBJ_FILES)
	$(PRINT) Building $@
	$(CC) $(CC_LINK_OPTIONS) -o $(LIB_DESTINATION)/$(LIB_PREFIX)$(LIBRARY).$(LIB_SUFFIX) $(OBJ_FILES) $(3RDPARTY_LIBS) 

# 
# Cleanups
#

# Rule 8. Remove all produced files (except javadoc)
cleanall :
	$(DELETE) $(LIB_DIR)/*.o 

# Rule 9. Change ".clean" tag to "Makefile", thus call the package makefile 
# which in turn recalls this makefile with target cleanall (rule 8).
%.clean :
	 $(MAKE) -k -f $(subst .clean,Makefile,$@) cleanall


# Rule 10: Call rule 9 for every package directory
clean : $(LIB_LIST_CLEAN)
	 $(PRINT) Done clean.

# Rule to build everything
complete : clean buildall