mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 10:11:27 +01:00
Wei Liu
31d41d7bc8
The debug option in Config.mk affects hypervisor, tools and stubdom by appending different flags to CFLAGS. Mini-os under extra is not affected because it already has its own build system when it is separated from xen.git. It is undesirable because now hypervisor build is affected by both Kconfig and debug. Disentangle the semantics of debug by pushing relevant options to individual sub-systems. For hypervisor, the flags previously added by debug option is now controlled by CONFIG_DEBUG. For tools, flags are moved from config/*.mk into tools/Rules.mk. For stubdom, because it unilaterally sets debug=y before including top-level Config.mk, we only need to move the debug build set of flags into stubdom Makefile. Specifically there are some considerations on what flags are picked: 1. we don't need -fno-optimize-sibling-calls anymore because gcc doc indicates that it is not enabled for -O1, which we already set in the debug build. 2. for tools we use -O0 -g3 in Rules.mk because they already take precedence over the flags set in config/*.mk. 3. for hypervisor we don't add -fno-omit-frame-pointer to debug build because that's controlled by CONFIG_FRAME_POINTER. This patch doesn't intend to tune those flags, but to provide identical set of effective flags as before. The debug option in Config.mk will only affect tools components after this patch is applied. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Jan Beulich <jbeulich@suse.com> Release-acked-by: Wei Liu <wei.liu2@citrix.com>
227 lines
9.1 KiB
Makefile
227 lines
9.1 KiB
Makefile
# -*- mode: Makefile; -*-
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# `all' is the default target
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all:
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-include $(XEN_ROOT)/config/Tools.mk
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include $(XEN_ROOT)/Config.mk
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export _INSTALL := $(INSTALL)
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INSTALL = $(XEN_ROOT)/tools/cross-install
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XEN_INCLUDE = $(XEN_ROOT)/tools/include
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XEN_LIBXENTOOLLOG = $(XEN_ROOT)/tools/libs/toollog
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XEN_LIBXENEVTCHN = $(XEN_ROOT)/tools/libs/evtchn
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XEN_LIBXENGNTTAB = $(XEN_ROOT)/tools/libs/gnttab
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XEN_LIBXENCALL = $(XEN_ROOT)/tools/libs/call
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XEN_LIBXENFOREIGNMEMORY = $(XEN_ROOT)/tools/libs/foreignmemory
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XEN_LIBXC = $(XEN_ROOT)/tools/libxc
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XEN_XENLIGHT = $(XEN_ROOT)/tools/libxl
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XEN_XENSTORE = $(XEN_ROOT)/tools/xenstore
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XEN_LIBXENSTAT = $(XEN_ROOT)/tools/xenstat/libxenstat/src
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XEN_BLKTAP2 = $(XEN_ROOT)/tools/blktap2
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XEN_LIBVCHAN = $(XEN_ROOT)/tools/libvchan
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CFLAGS_xeninclude = -I$(XEN_INCLUDE)
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XENSTORE_XENSTORED ?= y
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ifneq ($(nosharedlibs),y)
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INSTALL_SHLIB = $(INSTALL_PROG)
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SYMLINK_SHLIB = ln -sf
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libextension = .so
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else
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libextension = .a
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XENSTORE_STATIC_CLIENTS=y
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# If something tries to use these it is a mistake. Provide references
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# to nonexistent programs to produce a sane error message.
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INSTALL_SHLIB = : install-shlib-unsupported-fail
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SYMLINK_SHLIB = : symlink-shlib-unsupported-fail
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endif
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# Compiling and linking against in tree libraries.
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#
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# In order to compile and link against an in-tree library various
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# cpp/compiler/linker options are required.
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#
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# For example consider a library "libfoo" which itself uses two other
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# libraries:
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# libbar - whose use is entirely internal to libfoo and not exposed
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# to users of libfoo at all.
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# libbaz - whose use is entirely internal to libfoo but libfoo's
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# public headers include one or more of libbaz's
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# public headers. Users of libfoo are therefore transitively
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# using libbaz's header but not linking against libbaz.
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#
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# SHDEPS_libfoo: Flags for linking recursive dependencies of
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# libfoo. Must contain SHLIB for every library which
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# libfoo links against. So must contain both
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# $(SHLIB_libbar) and $(SHLIB_libbaz).
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#
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# SHLIB_libfoo: Flags for recursively linking against libfoo. Must
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# contains SHDEPS_libfoo and:
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# -Wl,-rpath-link=<directory containing libfoo.so>
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#
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# CFLAGS_libfoo: Flags for compiling against libfoo. Must add the
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# directories containing libfoo's headers to the
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# include path. Must recursively include
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# $(CFLAGS_libbaz), to satisfy the transitive inclusion
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# of the headers but not $(CFLAGS_libbar) since none of
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# libbar's headers are required to build against
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# libfoo.
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#
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# LDLIBS_libfoo: Flags for linking against libfoo. Must contain
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# $(SHDEPS_libfoo) and the path to libfoo.so
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#
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# Consumers of libfoo should include $(CFLAGS_libfoo) and
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# $(LDLIBS_libfoo) in their appropriate directories. They should not
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# include any CFLAGS or LDLIBS relating to libbar or libbaz unless
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# they use those libraries directly (not via libfoo) too.
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#
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# Consumers of libfoo should not directly use $(SHDEPS_libfoo) or
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# $(SHLIB_libfoo)
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CFLAGS_libxentoollog = -I$(XEN_LIBXENTOOLLOG)/include $(CFLAGS_xeninclude)
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SHDEPS_libxentoollog =
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LDLIBS_libxentoollog = $(XEN_LIBXENTOOLLOG)/libxentoollog$(libextension)
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SHLIB_libxentoollog = -Wl,-rpath-link=$(XEN_LIBXENTOOLLOG)
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CFLAGS_libxenevtchn = -I$(XEN_LIBXENEVTCHN)/include $(CFLAGS_xeninclude)
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SHDEPS_libxenevtchn =
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LDLIBS_libxenevtchn = $(XEN_LIBXENEVTCHN)/libxenevtchn$(libextension)
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SHLIB_libxenevtchn = -Wl,-rpath-link=$(XEN_LIBXENEVTCHN)
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CFLAGS_libxengnttab = -I$(XEN_LIBXENGNTTAB)/include $(CFLAGS_xeninclude)
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SHDEPS_libxengnttab = $(SHLIB_libxentoollog)
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LDLIBS_libxengnttab = $(SHDEPS_libxengnttab) $(XEN_LIBXENGNTTAB)/libxengnttab$(libextension)
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SHLIB_libxengnttab = $(SHDEPS_libxengnttab) -Wl,-rpath-link=$(XEN_LIBXENGNTTAB)
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# xengntshr_* interfaces are actually part of libxengnttab.so
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CFLAGS_libxengntshr = -I$(XEN_LIBXENGNTTAB)/include $(CFLAGS_xeninclude)
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LDLIBS_libxengntshr = $(XEN_LIBXENGNTTAB)/libxengnttab$(libextension)
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SHLIB_libxengntshr = -Wl,-rpath-link=$(XEN_LIBXENGNTTAB)
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CFLAGS_libxencall = -I$(XEN_LIBXENCALL)/include $(CFLAGS_xeninclude)
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LDLIBS_libxencall = $(XEN_LIBXENCALL)/libxencall$(libextension)
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SHLIB_libxencall = -Wl,-rpath-link=$(XEN_LIBXENCALL)
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CFLAGS_libxenforeignmemory = -I$(XEN_LIBXENFOREIGNMEMORY)/include $(CFLAGS_xeninclude)
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LDLIBS_libxenforeignmemory = $(XEN_LIBXENFOREIGNMEMORY)/libxenforeignmemory$(libextension)
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SHLIB_libxenforeignmemory = -Wl,-rpath-link=$(XEN_LIBXENFOREIGNMEMORY)
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# code which compiles against libxenctrl get __XEN_TOOLS__ and
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# therefore sees the unstable hypercall interfaces.
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CFLAGS_libxenctrl = -I$(XEN_LIBXC)/include $(CFLAGS_libxentoollog) $(CFLAGS_libxenforeignmemory) $(CFLAGS_xeninclude) -D__XEN_TOOLS__
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SHDEPS_libxenctrl = $(SHLIB_libxentoollog) $(SHLIB_libxenevtchn) $(SHLIB_libxengnttab) $(SHLIB_libxengntshr) $(SHLIB_libxencall) $(SHLIB_libxenforeignmemory)
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LDLIBS_libxenctrl = $(SHDEPS_libxenctrl) $(XEN_LIBXC)/libxenctrl$(libextension)
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SHLIB_libxenctrl = $(SHDEPS_libxenctrl) -Wl,-rpath-link=$(XEN_LIBXC)
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CFLAGS_libxenguest = -I$(XEN_LIBXC)/include $(CFLAGS_libxenevtchn) $(CFLAGS_libxenforeignmemory) $(CFLAGS_xeninclude)
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SHDEPS_libxenguest = $(SHLIB_libxenevtchn)
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LDLIBS_libxenguest = $(SHDEPS_libxenguest) $(XEN_LIBXC)/libxenguest$(libextension)
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SHLIB_libxenguest = $(SHDEPS_libxenguest) -Wl,-rpath-link=$(XEN_LIBXC)
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CFLAGS_libxenstore = -I$(XEN_XENSTORE)/include $(CFLAGS_xeninclude)
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SHDEPS_libxenstore =
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LDLIBS_libxenstore = $(SHDEPS_libxenguest) $(XEN_XENSTORE)/libxenstore$(libextension)
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SHLIB_libxenstore = $(SHDEPS_libxenguest) -Wl,-rpath-link=$(XEN_XENSTORE)
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CFLAGS_libxenstat = -I$(XEN_LIBXENSTAT)
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SHDEPS_libxenstat = $(SHLIB_libxenctrl) $(SHLIB_libxenstore)
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LDLIBS_libxenstat = $(SHDEPS_libxenstat) $(XEN_LIBXENSTAT)/libxenstat$(libextension)
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SHLIB_libxenstat = $(SHDEPS_libxenstat) -Wl,-rpath-link=$(XEN_LIBXENSTAT)
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CFLAGS_libxenvchan = -I$(XEN_LIBVCHAN)
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SHDEPS_libxenvchan = $(SHLIB_libxentoollog) $(SHLIB_libxenstore) $(SHLIB_libxenevtchn) $(SHLIB_libxengnttab) $(SHLIB_libxengntshr)
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LDLIBS_libxenvchan = $(SHDEPS_libxenvchan) $(XEN_LIBVCHAN)/libxenvchan$(libextension)
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SHLIB_libxenvchan = $(SHDEPS_libxenvchan) -Wl,-rpath-link=$(XEN_LIBVCHAN)
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ifeq ($(debug),y)
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# Disable optimizations and enable debugging information for macros
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CFLAGS += -O0 -g3 -fno-omit-frame-pointer
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# But allow an override to -O0 in case Python enforces -D_FORTIFY_SOURCE=<n>.
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PY_CFLAGS += $(PY_NOOPT_CFLAGS)
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else
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CFLAGS += -O2 -fomit-frame-pointer
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endif
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LIBXL_BLKTAP ?= $(CONFIG_BLKTAP2)
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ifeq ($(LIBXL_BLKTAP),y)
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CFLAGS_libblktapctl = -I$(XEN_BLKTAP2)/control -I$(XEN_BLKTAP2)/include $(CFLAGS_xeninclude)
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SHDEPS_libblktapctl =
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LDLIBS_libblktapctl = $(SHDEPS_libblktapctl) $(XEN_BLKTAP2)/control/libblktapctl$(libextension)
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SHLIB_libblktapctl = $(SHDEPS_libblktapctl) -Wl,-rpath-link=$(XEN_BLKTAP2)/control
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else
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CFLAGS_libblktapctl =
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SHDEPS_libblktapctl =
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LDLIBS_libblktapctl =
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SHLIB_libblktapctl =
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endif
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CFLAGS_libxenlight = -I$(XEN_XENLIGHT) $(CFLAGS_libxenctrl) $(CFLAGS_xeninclude)
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SHDEPS_libxenlight = $(SHLIB_libxenctrl) $(SHLIB_libxenstore) $(SHLIB_libblktapctl)
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LDLIBS_libxenlight = $(SHDEPS_libxenlight) $(XEN_XENLIGHT)/libxenlight$(libextension)
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SHLIB_libxenlight = $(SHDEPS_libxenlight) -Wl,-rpath-link=$(XEN_XENLIGHT)
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CFLAGS += -D__XEN_INTERFACE_VERSION__=__XEN_LATEST_INTERFACE_VERSION__
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# Get gcc to generate the dependencies for us.
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CFLAGS += -MMD -MF .$(if $(filter-out .,$(@D)),$(subst /,@,$(@D))@)$(@F).d
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DEPS = .*.d
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ifneq ($(FILE_OFFSET_BITS),)
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CFLAGS += -D_FILE_OFFSET_BITS=$(FILE_OFFSET_BITS)
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endif
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ifneq ($(XEN_OS),NetBSD)
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# Enable implicit LFS support *and* explicit LFS names.
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CFLAGS += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
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endif
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# 32-bit x86 does not perform well with -ve segment accesses on Xen.
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CFLAGS-$(CONFIG_X86_32) += $(call cc-option,$(CC),-mno-tls-direct-seg-refs)
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CFLAGS += $(CFLAGS-y)
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CFLAGS += $(EXTRA_CFLAGS_XEN_TOOLS)
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INSTALL_PYTHON_PROG = \
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$(XEN_ROOT)/tools/python/install-wrap "$(PYTHON_PATH)" $(INSTALL_PROG)
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%.opic: %.c
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$(CC) $(CPPFLAGS) -DPIC $(CFLAGS) $(CFLAGS_$*.opic) -fPIC -c -o $@ $< $(APPEND_CFLAGS)
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%.o: %.c
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$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_$*.o) -c -o $@ $< $(APPEND_CFLAGS)
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%.o: %.cc
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$(CC) $(CPPFLAGS) $(CXXFLAGS) $(CXXFLAGS_$*.o) -c -o $@ $< $(APPEND_CFLAGS)
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%.o: %.S
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$(CC) $(CFLAGS) $(CFLAGS_$*.o) -c $< -o $@ $(APPEND_CFLAGS)
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%.opic: %.S
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$(CC) $(CPPFLAGS) -DPIC $(CFLAGS) $(CFLAGS.opic) -fPIC -c -o $@ $< $(APPEND_CFLAGS)
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headers.chk:
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for i in $(filter %.h,$^); do \
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$(CC) -x c -ansi -Wall -Werror $(CFLAGS_xeninclude) \
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-S -o /dev/null $$i || exit 1; \
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echo $$i; \
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done >$@.new
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mv $@.new $@
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subdirs-all subdirs-clean subdirs-install subdirs-distclean: .phony
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@set -e; for subdir in $(SUBDIRS) $(SUBDIRS-y); do \
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$(MAKE) subdir-$(patsubst subdirs-%,%,$@)-$$subdir; \
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done
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subdir-all-% subdir-clean-% subdir-install-%: .phony
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$(MAKE) -C $* $(patsubst subdir-%-$*,%,$@)
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subdir-distclean-%: .phony
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$(MAKE) -C $* distclean
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ifeq (,$(findstring clean,$(MAKECMDGOALS)))
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$(XEN_ROOT)/config/Tools.mk:
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$(error You have to run ./configure before building or installing the tools)
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endif
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