Initial outline of common build system (gmake only)

src/build/Common.gmake

+#########################################################################
+#																		#
+# Common macro setup for GNU make										#
+#																		#
+# Common Build Macros REQUIRED:											#
+#  SRC_ROOT			- *MUST* be set to the src dir						#
+#																		#
+# Common Build Macros Used:												#
+#  DEBUG			- Create a debug build								#
+#  RELEASE			- Create a release build							#
+#					  (Mutually exclusive, if both are set, RELEASE 	#
+#						is cleared)										#
+#  DONT_CLOBBER_CC	- Do not change the default setting of CC			#
+#  OBJPATH_SUFFIX	- Suffix appended to OBJPATH usefull for compiling  #
+#					  different options of the same source file			#
+#																		#
+# Common Build Macros Defined:											#
+#  OBJODIR			- Object output dir									#
+#  LIBODIR			- Library output dir								#
+#  EXEODIR			- Executable output dir								#
+#  DEBUG			- Set for debug builds								#
+#  RELEASE			- Set for release builds							#
+#					  One of DEBUG or RELEASE is always set!			#
+#  QUIET			- Target command prefix to show/not show commands	#
+#  					  (Toggled off by setting VERBOSE)					#
+#  CFLAGS			- Common C and C++ compiler flags					#
+#  CCFLAGS			- C specific compiler flags							#
+#  CXXFLAGS			- C++ specific compiler flags						#
+#  LDFLAGS			- Linker flags										#
+#  CC				- C compiler										#
+#  CXX				- C++ compiler										#
+#  EXEFILE			- Executable file extension (Includes .)			#
+#  OFILE			- Object file extension (Includes .)				#
+#  SOFILE			- Shared object (DLL) file extension (Includes .)	#
+#  LIBFILE			- Static library file extension (Include .)			#
+#  LIBPREFIX		- Prefix to library filename						#
+#  LIBS				- Library names	(Appropriate for dependencies)		#
+#  LIB_LDFLAGS		- Libraries appropriate for link command-line usage	#
+#  COMPILE_MSG		- Message saying a target is being compiled			#
+#  DIRSEP			- The directory seperator this system likes most	#
+#  VERSION			- Synchronet version number in MAJOR.MINOR format	#
+#					  (Numeric ONLY)									#
+#																		#
+#########################################################################
+
+# Set VERSION
+ifndef VERSION
+ VERSION	:=	3.12
+endif
+
+# Set DEBUG
+ifdef DEBUG
+ ifdef RELEASE
+  undef RELEASE
+ endif
+endif
+
+ifndef DEBUG
+ ifndef RELEASE
+  DEBUG	:=	1
+ endif
+endif
+
+# VERBOSE/QUIET
+ifndef VERBOSE
+ QUIET	:=	@
+endif
+
+# Compiler-specific options
+CFLAGS	+=	-MMD
+ifdef BUILD_DEPENDS
+ ifdef DONT_CLOBBER_CC
+  CC			?=	gcc
+ else
+  CC			:=	gcc
+ endif
+ CCPRE			:=	$(CC)
+ CC				:=	$(SRC_ROOT)/build/mkdep -a
+ CXX			:=	$(SRC_ROOT)/build/mkdep -a
+ LD				:=	echo
+ COMPILE_MSG	:=  Depending
+else
+ ifdef DONT_CLOBBER_CC
+  CC			?=	gcc
+ else
+  CC			:=	gcc
+ endif
+ CCPRE			:=	$(CC)
+ CXX			?=	g++
+ LD				?=	ld
+ COMPILE_MSG	:= Compiling
+endif
+
+ifdef DEBUG
+ BUILD	=	debug
+else
+ BUILD	=	release
+endif
+BUILDPATH	?=	$(BUILD)
+
+# Get OS
+ifndef os
+ os		:=	$(shell uname)
+endif
+os      :=	$(shell echo $(os) | tr '[A-Z]' '[a-z]' | tr ' ' '_')
+
+machine		:=	$(shell if uname -m | egrep -v "(i[3456789]|x)86" > /dev/null; then uname -m | tr "[A-Z]" "[a-z]" | tr " " "_" ; fi)
+ifeq ($(machine),sun4u)
+ CFLAGS +=      -D__BIG_ENDIAN__
+endif
+ifeq ($(machine),)
+ machine	:=	$(os)
+else
+ machine	:=	$(os).$(machine)
+endif
+
+LIBODIR :=	$(CCPRE).$(machine).lib.$(BUILDPATH)
+OBJODIR :=	$(CCPRE).$(machine).obj.$(BUILDPATH)$(OBJPATH_SUFFIX)
+EXEODIR :=	$(CCPRE).$(machine).exe.$(BUILDPATH)
+LDFLAGS	+=	-L$(LIBODIR)
+
+ifeq ($(os),netbsd)
+ DELETE :=	rm -f
+else
+ ifeq ($(os),openbsd)
+  DELETE :=	rm -f
+ else
+  ifeq ($(os),sunos)
+   DELETE :=	rm -f
+  else
+   DELETE	=	rm -fv
+  endif
+ endif
+endif
+
+LIBPREFIX	:= lib
+DIRSEP		:= /
+OFILE		:= .o
+EXEFILE		:=
+SOFILE		:= .so
+LIBFILE		:= .a
+
+ifeq ($(os),openbsd)
+ SOFILE	:=	$(SOFILE)$(VERSION)
+else
+ ifeq ($(os),darwin)
+  SOFILE =	.dylib
+ endif
+endif
+
+# OS Specific Flags
+ifeq ($(os),sunos)    # Solaris
+ CFLAGS	+= -D__solaris__ -DNEEDS_DAEMON -DNEEDS_FORKPTY -DNEEDS_SETENV -DNEEDS_CFMAKERAW
+endif
+ifeq ($(os),netbsd)	# NetBSD
+ CFLAGS	+=	-D__unix__ -I/usr/pkg/include -I/usr/pkg/pthreads/include -DNEEDS_FORKPTY
+endif
+ifeq ($(os),darwin)
+ CFLAGS +=  -D__unix__ -fno-common -D__DARWIN__
+ LDFLAGS +=  -lm
+endif
+
+ifdef DEBUG
+ CFLAGS	+=	-ggdb
+ CFLAGS	+=	-D_DEBUG
+else # RELEASE
+ CFLAGS	:= -O3 $(CFLAGS)
+endif
+
+-include targets.mk
+-include $(SRC_ROOT)/rules.mk
+-include objects.mk		# defines $(OBJS)
+-include libobjs.mk		# defines $(LIB_OBJS)
+
+# Implicit C Compile Rule
+$(OBJODIR)/%.o : %.c $(BUILD_DEPENDS)
+	@echo $(COMPILE_MSG) $<
+	$(QUIET)$(CC) $(CFLAGS) $(CCFLAGS) -o $@ -c $<
+
+# Implicit C++ Compile Rule
+$(OBJODIR)/%.o : %.cpp $(BUILD_DEPENDS)
+	@echo $(COMPILE_MSG) $<
+	$(QUIET)$(CXX) $(CFLAGS) $(CXXFLAGS) -o $@ -c $<
+
+depend:
+	$(QUIET)$(DELETE) $(OBJODIR)/.depend
+	$(QUIET)$(DELETE) $(LIBODIR)/.depend
+	$(QUIET)$(DELETE) $(EXEODIR)/.depend
+	$(QUIET)$(MAKE) BUILD_DEPENDS=FORCE
+
+FORCE:
+
+-include $(OBJODIR)/.depend
+-include $(LIBODIR)/.depend
+-include $(EXEODIR)/.depend
+-include $(OBJODIR)/*.d
+-include $(LIBODIR)/*.d
+-include $(EXEODIR)/*.d