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Anthony PERARD
98d95437ed
When there isn't a version-script for a shared library (like for unstable libs), we create one based on the current Xen version. But that version-script became out-of-date as soon as Xen's version changes and make as no way to regenerate the version-script on rebuild. For unstable libs, we only needs the symver to be different from a previous release of Xen. There's an option "--default-symver" which allow to use the soname as symver and as the soname have the Xen release version, it will be different for every release. With --default-symver we don't need to generate a version-script. But we also need to know if there's already an existing version script , for that we introduce $(version-script) to be used to point to the path of the existing script. (Guessing if a version script exist for a stable library with for example $(wildcard) won't work as a file will exist when building the library without this patch.) We don't need the version-script unless we are making the shared library so it is removed from the "all" target. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
131 lines
4.3 KiB
Makefile
131 lines
4.3 KiB
Makefile
# Common Makefile for building a lib.
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#
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# Variables taken as input:
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# PKG_CONFIG: name of pkg-config file (xen$(LIBNAME).pc if empty)
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# MAJOR: major version of lib (Xen version if empty)
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# MINOR: minor version of lib (0 if empty)
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# version-script: Specify the name of a version script to the linker.
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LIBNAME := $(notdir $(CURDIR))
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ifeq ($(origin MAJOR), undefined)
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MAJOR := $(shell $(XEN_ROOT)/version.sh $(XEN_ROOT)/xen/Makefile)
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endif
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MINOR ?= 0
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CFLAGS += -Wmissing-prototypes
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CFLAGS += $(CFLAGS_xeninclude)
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CFLAGS += $(foreach lib, $(USELIBS_$(LIBNAME)), $(CFLAGS_libxen$(lib)))
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LDLIBS += $(call xenlibs-ldlibs,$(USELIBS_$(LIBNAME)))
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PIC_OBJS := $(OBJS-y:.o=.opic)
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LIB_FILE_NAME = $(FILENAME_$(LIBNAME))
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TARGETS := lib$(LIB_FILE_NAME).a
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ifneq ($(nosharedlibs),y)
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TARGETS += lib$(LIB_FILE_NAME).so
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endif
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PKG_CONFIG ?= $(LIB_FILE_NAME).pc
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PKG_CONFIG_NAME ?= Xen$(LIBNAME)
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PKG_CONFIG_DESC ?= The $(PKG_CONFIG_NAME) library for Xen hypervisor
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PKG_CONFIG_VERSION := $(MAJOR).$(MINOR)
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PKG_CONFIG_USELIBS := $(SHLIB_libxen$(LIBNAME))
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PKG_CONFIG_LIB := $(LIB_FILE_NAME)
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PKG_CONFIG_REQPRIV := $(subst $(space),$(comma),$(strip $(foreach lib,$(patsubst ctrl,control,$(USELIBS_$(LIBNAME))),xen$(lib))))
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ifneq ($(CONFIG_LIBXC_MINIOS),y)
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TARGETS += $(PKG_CONFIG)
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$(PKG_CONFIG): PKG_CONFIG_PREFIX = $(prefix)
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$(PKG_CONFIG): PKG_CONFIG_INCDIR = $(includedir)
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$(PKG_CONFIG): PKG_CONFIG_LIBDIR = $(libdir)
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endif
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PKG_CONFIG_LOCAL := $(PKG_CONFIG_DIR)/$(PKG_CONFIG)
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LIBHEADER ?= $(LIB_FILE_NAME).h
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LIBHEADERS = $(foreach h, $(LIBHEADER), $(XEN_INCLUDE)/$(h))
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PKG_ABI := lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR)-$(XEN_TARGET_ARCH)-abi.dump
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$(PKG_CONFIG_LOCAL): PKG_CONFIG_PREFIX = $(XEN_ROOT)
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$(PKG_CONFIG_LOCAL): PKG_CONFIG_INCDIR = $(XEN_INCLUDE)
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$(PKG_CONFIG_LOCAL): PKG_CONFIG_LIBDIR = $(CURDIR)
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.PHONY: all
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all: $(TARGETS) $(PKG_CONFIG_LOCAL) $(LIBHEADERS)
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ifneq ($(NO_HEADERS_CHK),y)
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all: headers.chk
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headers.chk: $(LIBHEADERS) $(AUTOINCS)
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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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endif
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headers.lst: FORCE
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@{ set -e; $(foreach h,$(LIBHEADERS),echo $(h);) } > $@.tmp
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@$(call move-if-changed,$@.tmp,$@)
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lib$(LIB_FILE_NAME).a: $(OBJS-y)
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$(AR) rc $@ $^
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lib$(LIB_FILE_NAME).so: lib$(LIB_FILE_NAME).so.$(MAJOR)
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$(SYMLINK_SHLIB) $< $@
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lib$(LIB_FILE_NAME).so.$(MAJOR): lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR)
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$(SYMLINK_SHLIB) $< $@
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lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR): $(PIC_OBJS) $(version-script)
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$(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,lib$(LIB_FILE_NAME).so.$(MAJOR) -Wl,$(if $(version-script),--version-script=$(version-script),--default-symver) $(SHLIB_LDFLAGS) -o $@ $(PIC_OBJS) $(LDLIBS) $(APPEND_LDFLAGS)
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# If abi-dumper is available, write out the ABI analysis
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ifneq ($(ABI_DUMPER),)
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ifneq ($(nosharedlibs),y)
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all: $(PKG_ABI)
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$(PKG_ABI): lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR) headers.lst
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$(ABI_DUMPER) $< -o $@ -public-headers headers.lst -lver $(MAJOR).$(MINOR)
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endif
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endif
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.PHONY: install
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install:: all
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$(INSTALL_DIR) $(DESTDIR)$(libdir)
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$(INSTALL_DIR) $(DESTDIR)$(includedir)
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$(INSTALL_SHLIB) lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)
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$(INSTALL_DATA) lib$(LIB_FILE_NAME).a $(DESTDIR)$(libdir)
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$(SYMLINK_SHLIB) lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)/lib$(LIB_FILE_NAME).so.$(MAJOR)
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$(SYMLINK_SHLIB) lib$(LIB_FILE_NAME).so.$(MAJOR) $(DESTDIR)$(libdir)/lib$(LIB_FILE_NAME).so
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for i in $(LIBHEADERS); do $(INSTALL_DATA) $$i $(DESTDIR)$(includedir); done
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$(INSTALL_DATA) $(PKG_CONFIG) $(DESTDIR)$(PKG_INSTALLDIR)
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.PHONY: uninstall
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uninstall::
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rm -f $(DESTDIR)$(PKG_INSTALLDIR)/$(LIB_FILE_NAME).pc
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for i in $(LIBHEADER); do rm -f $(DESTDIR)$(includedir)/$$i; done
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rm -f $(DESTDIR)$(libdir)/lib$(LIB_FILE_NAME).so
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rm -f $(DESTDIR)$(libdir)/lib$(LIB_FILE_NAME).so.$(MAJOR)
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rm -f $(DESTDIR)$(libdir)/lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR)
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rm -f $(DESTDIR)$(libdir)/lib$(LIB_FILE_NAME).a
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.PHONY: TAGS
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TAGS:
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etags -t *.c *.h
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.PHONY: clean
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clean::
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rm -rf $(TARGETS) *~ $(DEPS_RM) $(OBJS-y) $(PIC_OBJS)
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rm -f lib$(LIB_FILE_NAME).so.$(MAJOR).$(MINOR) lib$(LIB_FILE_NAME).so.$(MAJOR)
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rm -f headers.chk headers.lst
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.PHONY: distclean
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distclean: clean
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ifeq ($(filter clean distclean,$(MAKECMDGOALS)),)
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-include $(DEPS_INCLUDE)
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endif
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