tools: generate most contents of library make variables

Library related make variables (CFLAGS_lib*, SHDEPS_lib*, LDLIBS_lib*
and SHLIB_lib*) mostly have a common pattern for their values. Generate
most of this content automatically by adding a new per-library variable
defining on which other libraries a lib is depending. Those definitions
are put into an own file in order to make it possible to include it
from various Makefiles, especially for stubdom.

This in turn makes it possible to drop the USELIB variable from each
library Makefile.

The LIBNAME variable can be dropped, too, as it can be derived from the
directory name the library is residing in.

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wl@xen.org>

tools/Rules.mk

@@ -12,14 +12,9 @@ INSTALL = $(XEN_ROOT)/tools/cross-install
 LDFLAGS += $(PREPEND_LDFLAGS_XEN_TOOLS)
 
 XEN_INCLUDE        = $(XEN_ROOT)/tools/include
-XEN_libxentoolcore = $(XEN_ROOT)/tools/libs/toolcore
-XEN_libxentoollog  = $(XEN_ROOT)/tools/libs/toollog
-XEN_libxenevtchn   = $(XEN_ROOT)/tools/libs/evtchn
-XEN_libxengnttab   = $(XEN_ROOT)/tools/libs/gnttab
-XEN_libxencall     = $(XEN_ROOT)/tools/libs/call
-XEN_libxenforeignmemory = $(XEN_ROOT)/tools/libs/foreignmemory
-XEN_libxendevicemodel = $(XEN_ROOT)/tools/libs/devicemodel
-XEN_libxenhypfs    = $(XEN_ROOT)/tools/libs/hypfs
+
+include $(XEN_ROOT)/tools/libs/uselibs.mk
+
 XEN_libxenctrl     = $(XEN_ROOT)/tools/libxc
 # Currently libxenguest lives in the same directory as libxenctrl
 XEN_libxenguest    = $(XEN_libxenctrl)
@@ -99,45 +94,15 @@ endif
 # Consumers of libfoo should not directly use $(SHDEPS_libfoo) or
 # $(SHLIB_libfoo)
 
-CFLAGS_libxentoollog = -I$(XEN_libxentoollog)/include $(CFLAGS_xeninclude)
-SHDEPS_libxentoollog =
-LDLIBS_libxentoollog = $(SHDEPS_libxentoollog) $(XEN_libxentoollog)/libxentoollog$(libextension)
-SHLIB_libxentoollog  = $(SHDEPS_libxentoollog) -Wl,-rpath-link=$(XEN_libxentoollog)
+define LIB_defs =
+ XEN_libxen$(1) = $$(XEN_ROOT)/tools/libs/$(1)
+ CFLAGS_libxen$(1) = -I$$(XEN_libxen$(1))/include $$(CFLAGS_xeninclude)
+ SHDEPS_libxen$(1) = $$(foreach use,$$(USELIBS_$(1)),$$(SHLIB_libxen$$(use)))
+ LDLIBS_libxen$(1) = $$(SHDEPS_libxen$(1)) $$(XEN_libxen$(1))/libxen$(1)$$(libextension)
+ SHLIB_libxen$(1) = $$(SHDEPS_libxen$(1)) -Wl,-rpath-link=$$(XEN_libxen$(1))
+endef
 
-CFLAGS_libxentoolcore = -I$(XEN_libxentoolcore)/include $(CFLAGS_xeninclude)
-SHDEPS_libxentoolcore =
-LDLIBS_libxentoolcore = $(SHDEPS_libxentoolcore) $(XEN_libxentoolcore)/libxentoolcore$(libextension)
-SHLIB_libxentoolcore  = $(SHDEPS_libxentoolcore) -Wl,-rpath-link=$(XEN_libxentoolcore)
-
-CFLAGS_libxenevtchn = -I$(XEN_libxenevtchn)/include $(CFLAGS_xeninclude)
-SHDEPS_libxenevtchn = $(SHLIB_libxentoolcore)
-LDLIBS_libxenevtchn = $(SHDEPS_libxenevtchn) $(XEN_libxenevtchn)/libxenevtchn$(libextension)
-SHLIB_libxenevtchn  = $(SHDEPS_libxenevtchn) -Wl,-rpath-link=$(XEN_libxenevtchn)
-
-CFLAGS_libxengnttab = -I$(XEN_libxengnttab)/include $(CFLAGS_xeninclude)
-SHDEPS_libxengnttab = $(SHLIB_libxentoollog) $(SHLIB_libxentoolcore)
-LDLIBS_libxengnttab = $(SHDEPS_libxengnttab) $(XEN_libxengnttab)/libxengnttab$(libextension)
-SHLIB_libxengnttab  = $(SHDEPS_libxengnttab) -Wl,-rpath-link=$(XEN_libxengnttab)
-
-CFLAGS_libxencall = -I$(XEN_libxencall)/include $(CFLAGS_xeninclude)
-SHDEPS_libxencall = $(SHLIB_libxentoolcore)
-LDLIBS_libxencall = $(SHDEPS_libxencall) $(XEN_libxencall)/libxencall$(libextension)
-SHLIB_libxencall  = $(SHDEPS_libxencall) -Wl,-rpath-link=$(XEN_libxencall)
-
-CFLAGS_libxenforeignmemory = -I$(XEN_libxenforeignmemory)/include $(CFLAGS_xeninclude)
-SHDEPS_libxenforeignmemory = $(SHLIB_libxentoolcore)
-LDLIBS_libxenforeignmemory = $(SHDEPS_libxenforeignmemory) $(XEN_libxenforeignmemory)/libxenforeignmemory$(libextension)
-SHLIB_libxenforeignmemory  = $(SHDEPS_libxenforeignmemory) -Wl,-rpath-link=$(XEN_libxenforeignmemory)
-
-CFLAGS_libxendevicemodel = -I$(XEN_libxendevicemodel)/include $(CFLAGS_xeninclude)
-SHDEPS_libxendevicemodel = $(SHLIB_libxentoollog) $(SHLIB_libxentoolcore) $(SHLIB_libxencall)
-LDLIBS_libxendevicemodel = $(SHDEPS_libxendevicemodel) $(XEN_libxendevicemodel)/libxendevicemodel$(libextension)
-SHLIB_libxendevicemodel  = $(SHDEPS_libxendevicemodel) -Wl,-rpath-link=$(XEN_libxendevicemodel)
-
-CFLAGS_libxenhypfs = -I$(XEN_libxenhypfs)/include $(CFLAGS_xeninclude)
-SHDEPS_libxenhypfs = $(SHLIB_libxentoollog) $(SHLIB_libxentoolcore) $(SHLIB_libxencall)
-LDLIBS_libxenhypfs = $(SHDEPS_libxenhypfs) $(XEN_libxenhypfs)/libxenhypfs$(libextension)
-SHLIB_libxenhypfs  = $(SHDEPS_libxenhypfs) -Wl,-rpath-link=$(XEN_libxenhypfs)
+$(foreach lib,$(LIBS_LIBS),$(eval $(call LIB_defs,$(lib))))
 
 # code which compiles against libxenctrl get __XEN_TOOLS__ and
 # therefore sees the unstable hypercall interfaces.

tools/libs/call/Makefile

@@ -3,8 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
 MINOR    = 2
-LIBNAME  := call
-USELIBS  := toollog toolcore
 
 SRCS-y                 += core.c buffer.c
 SRCS-$(CONFIG_Linux)   += linux.c

tools/libs/devicemodel/Makefile

@@ -3,8 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
 MINOR    = 3
-LIBNAME  := devicemodel
-USELIBS  := toollog toolcore call
 
 SRCS-y                 += core.c
 SRCS-$(CONFIG_Linux)   += linux.c

tools/libs/evtchn/Makefile

@@ -3,8 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
 MINOR    = 1
-LIBNAME  := evtchn
-USELIBS  := toollog toolcore
 
 SRCS-y                 += core.c
 SRCS-$(CONFIG_Linux)   += linux.c

tools/libs/foreignmemory/Makefile

@@ -3,8 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
 MINOR    = 3
-LIBNAME  := foreignmemory
-USELIBS  := toollog toolcore
 
 SRCS-y                 += core.c
 SRCS-$(CONFIG_Linux)   += linux.c

tools/libs/gnttab/Makefile

@@ -3,8 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
 MINOR    = 2
-LIBNAME  := gnttab
-USELIBS  := toollog toolcore
 
 SRCS-GNTTAB            += gnttab_core.c
 SRCS-GNTSHR            += gntshr_core.c

tools/libs/hypfs/Makefile

@@ -3,8 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
 MINOR    = 0
-LIBNAME  := hypfs
-USELIBS  := toollog toolcore call
 
 APPEND_LDFLAGS += -lz
 

tools/libs/libs.mk

@@ -1,18 +1,18 @@
 # Common Makefile for building a lib.
 #
 # Variables taken as input:
-#   LIBNAME: name of lib to build, will be prepended with "libxen"
 #   MAJOR:   major version of lib
 #   MINOR:   minor version of lib
-#   USELIBS: xen libs to use (e.g. "toolcore toollog")
+
+LIBNAME := $(notdir $(CURDIR))
 
 SHLIB_LDFLAGS += -Wl,--version-script=libxen$(LIBNAME).map
 
 CFLAGS   += -Werror -Wmissing-prototypes
 CFLAGS   += -I./include $(CFLAGS_xeninclude)
-CFLAGS   += $(foreach lib, $(USELIBS), $(CFLAGS_libxen$(lib)))
+CFLAGS   += $(foreach lib, $(USELIBS_$(LIBNAME)), $(CFLAGS_libxen$(lib)))
 
-LDUSELIBS = $(foreach lib, $(USELIBS), $(LDLIBS_libxen$(lib)))
+LDUSELIBS = $(foreach lib, $(USELIBS_$(LIBNAME)), $(LDLIBS_libxen$(lib)))
 
 LIB_OBJS := $(SRCS-y:.c=.o)
 PIC_OBJS := $(SRCS-y:.c=.opic)

tools/libs/toolcore/Makefile

@@ -3,7 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR	= 1
 MINOR	= 0
-LIBNAME  := toolcore
 AUTOINCS := include/_xentoolcore_list.h
 
 SRCS-y	+= handlereg.c

tools/libs/toollog/Makefile

@@ -3,7 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR	= 1
 MINOR	= 0
-LIBNAME  := toollog
 
 SRCS-y	+= xtl_core.c
 SRCS-y	+= xtl_logger_stdio.c

tools/libs/uselibs.mk

@@ -0,0 +1,18 @@
+# Libraries below tools/libs/ and their dependencies
+
+LIBS_LIBS += toolcore
+USELIBS_toolcore :=
+LIBS_LIBS += toollog
+USELIBS_toollog :=
+LIBS_LIBS += evtchn
+USELIBS_evtchn := toollog toolcore
+LIBS_LIBS += gnttab
+USELIBS_gnttab := toollog toolcore
+LIBS_LIBS += call
+USELIBS_call := toollog toolcore
+LIBS_LIBS += foreignmemory
+USELIBS_foreignmemory := toollog toolcore
+LIBS_LIBS += devicemodel
+USELIBS_devicemodel := toollog toolcore call
+LIBS_LIBS += hypfs
+USELIBS_hypfs := toollog toolcore call