diff options
Diffstat (limited to 'Makerules')
| -rw-r--r-- | Makerules | 164 |
1 files changed, 114 insertions, 50 deletions
diff --git a/Makerules b/Makerules index 876134756f..47e5fb8b0f 100644 --- a/Makerules +++ b/Makerules @@ -428,6 +428,71 @@ $(AR) cru$(verbose) $(@:$(objpfx)%=%) \ $(RANLIB) $@ endef +# Shared library building. + +ifeq (yes,$(build-shared)) + +# Process the shlib-versions file, which tells us what shared library +# version numbers to use when we install shared objects on this system. +-include $(common-objpfx)soversions.mk +$(common-objpfx)soversions.mk: $(..)shlib-versions $(..)Makerules \ + $(common-objpfx)config.make + sed 's/#.*$$//' $< | while read conf versions; do \ + test -n "$$versions" || continue; \ + case '$(config-machine)-$(config-vendor)-$(config-os)' in $$conf)\ + for v in $$versions; do \ + lib="$${v%%=*}"; if eval "test -z \"\$$vers_lib$$lib\""; then \ + eval vers_lib$${lib}=yes; \ + echo $$lib.so-version=.$${v##$$lib=}; fi; \ + done ;; esac; done > $@T + mv -f $@T $@ + +# Get $(version) defined with the release version number. +-include $(common-objpfx)version.mk + + +# Pattern rule to build a shared object from an archive of PIC objects. +# This must come after the installation rules so Make doesn't try to +# build shared libraries in place from the installed *_pic.a files. +# $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies +# on other shared objects. +lib%.so: lib%_pic.a; $(build-shlib) + +ifeq ($(have-no-whole-archive),yes) +no-whole-archive = -Wl,--no-whole-archive +else +no-whole-archive = +endif + +define build-shlib +$(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS) \ + -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \ + $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \ + -Wl,-rpath-link=$(common-objdir) \ + -Wl,--whole-archive $^ $(no-whole-archive) \ + $(LDLIBS-$(@F:lib%.so=%).so) +endef + +# Don't try to use -lc when making libc.so itself. +# Also omits crti.o and crtn.o, which we do not want +# since we define our own `.init' section specially. +LDFLAGS-c.so = -nostdlib -nostartfiles +# Give libc.so an entry point and make it directly runnable itself. +LDFLAGS-c.so += -e __libc_print_version +# Use our own special initializer and finalizer files for libc.so. +elfobjdir := $(firstword $(objdir) $(..)elf) +$(common-objpfx)libc.so: $(elfobjdir)/soinit.so \ + $(common-objpfx)libc_pic.a \ + $(elfobjdir)/sofini.so + $(build-shlib) + +ifdef libc.so-version +$(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so + rm -f $@ + ln -s $(<F) $@ || ln $< $@ +endif +endif + # Installation. # $(install-lib) are installed from the object directory into $(libdir); @@ -483,13 +548,56 @@ endef install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so)) install-lib := $(filter-out %.so %_pic.a,$(install-lib)) ifeq (yes,$(build-shared)) -install-lib-nosubdir: $(foreach so,$(install-lib.so),\ - $(libdir)/$(patsubst $(libprefix)lib%,lib$(libprefix)%,\ - $(libprefix)$(so))$($(so)-version)) -install: $(slibdir)/libc.so$(libc.so-version) -$(slibdir)/lib$(libprefix)c.so$(libc.so-version): $(common-objpfx)libc.so - $(do-install-so) +install-lib-nosubdir: $(install-lib.so:%=$(libdir)/%) +install: $(slibdir)/libc.so + +# Find which .so's have versions. +versioned := $(foreach so,$(install-lib.so),\ + $(patsubst %,$(so),$($(so)-version))) + +# Install all the unversioned shared libraries. +$(addprefix $(libdir)/,$(filter-out $(versioned),$(install-lib.so))): \ +$(libdir)/%: $(objpfx)lib%.so; $(do-install-program) + +make-link = cd $(@D); rm -f $(@F); $(LN_S) $(<F) $(@F) + +ifdef libc.so-version +# For a library specified to be version N, install three files: +# libc.so -> libc.so.N (e.g. libc.so.6) +# libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so) + +$(slibdir)/libc.so: $(slibdir)/libc.so$(libc.so-version) + $(make-link) +$(slibdir)/libc.so$(libc.so-version): $(slibdir)/libc-$(version).so + $(make-link) +$(slibdir)/libc-$(version).so: $(common-objpfx)libc.so; $(do-install-program) +else +$(slibdir)/libc.so: $(common-objpfx)libc.so; $(do-install-program) +endif + + +ifneq (,$(versioned)) +# Produce three sets of rules as above for all the smaller versioned libraries. + +define o-iterator-doit +$$(libdir)/$o: $$(libdir)/$o$$($o-version); $$(make-link) +endef +object-suffixes-left := $(versioned) +include $(..)o-iterator.mk + +define o-iterator-doit +$$(libdir)/$o$$($o-version): $$(libdir)/$(o:.so=)-$$(version).so; $$(make-link) +endef +object-suffixes-left := $(versioned) +include $(..)o-iterator.mk + +define o-iterator-doit +$$(libdir)/$(o:.so=)-$$(version).so: $$(objpfx)$o; $$(do-install-program) +endef +object-suffixes-left := $(versioned) +include $(..)o-iterator.mk +endif define do-install-so $(do-install-program) @@ -561,50 +669,6 @@ install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir\ install-others-nosubdir install-sbin-nosubdir install: install-no-libc.a-nosubdir -ifeq (yes,$(build-shared)) -# Pattern rule to build a shared object from an archive of PIC objects. -# This must come after the installation rules so Make doesn't try to -# build shared libraries in place from the installed *_pic.a files. -# $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies -# on other shared objects. -lib%.so: lib%_pic.a; $(build-shlib) - -ifeq ($(have-no-whole-archive),yes) -no-whole-archive = -Wl,--no-whole-archive -else -no-whole-archive = -endif - -define build-shlib -$(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS) \ - -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \ - $(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \ - -Wl,-rpath-link=$(common-objdir) \ - -Wl,--whole-archive $^ $(no-whole-archive) \ - $(LDLIBS-$(@F:lib%.so=%).so) -endef - -# Don't try to use -lc when making libc.so itself. -# Also omits crti.o and crtn.o, which we do not want -# since we define our own `.init' section specially. -LDFLAGS-c.so = -nostdlib -nostartfiles -# Give libc.so an entry point and make it directly runnable itself. -LDFLAGS-c.so += -e __libc_print_version -# Use our own special initializer and finalizer files for libc.so. -elfobjdir := $(firstword $(objdir) $(..)elf) -$(common-objpfx)libc.so: $(elfobjdir)/soinit.so \ - $(common-objpfx)libc_pic.a \ - $(elfobjdir)/sofini.so - $(build-shlib) - -ifdef libc.so-version -$(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so - rm -f $@ - ln -s $(<F) $@ || ln $< $@ -endif -endif - - # Command to compile $< in $(objdir) using the native libraries. define native-compile cwd=`pwd`; cd $(@D); $(BUILD_CC) $(BUILD_CFLAGS) \ |