# # Licensed under LGPL v2.1, see the file COPYING.LIB in this tarball for details. # .SUFFIXES: .c .S .o .os .oS .so .a .s .i PHONY := FORCE .PHONY: dummy $(PHONY) subdirs \ all check test $(clean_targets) \ config dist menuconfig oldconfig release \ utils help # order is important, the stripping uses STRIP_FLAGS for lib-so, but not for lib-a ifeq ($(HAVE_SHARED),y) .LIBPATTERNS: "lib%.so" libs: $(lib-so-y) $(lib-a-y) $(lib-so-y): | $(interp) else .LIBPATTERNS: "lib%.a" ifeq ($(UCLIBC_FORMAT_SHARED_FLAT),y) libs: $(lib-gdb-y) endif libs: $(lib-a-y) $(lib-a-y): | $(top_builddir)lib endif objs: all_objs # apply unconditional per-directory flags define add_IS_IN_lib ifneq ($(strip $(2)),) __add_IS_IN_lib := $(subst $(top_builddir),,$(2)) $$(__add_IS_IN_lib): CFLAGS-for-library-members:=$(CFLAGS-$(1)) -DIN_LIB=$(word 1,$(subst /, ,$(1))) endif endef $(eval $(call add_IS_IN_lib,rtld,$(ldso-y))) $(eval $(call add_IS_IN_lib,libc,$(libc-y) $(libc-static-y) $(libc-y:.o=.os) $(libc-shared-y) $(libc-nonshared-y))) $(eval $(call add_IS_IN_lib,libcrypt,$(libcrypt-a-y) $(libcrypt-so-y))) $(eval $(call add_IS_IN_lib,libdl,$(libdl-a-y) $(libdl-so-y))) $(eval $(call add_IS_IN_lib,libintl,$(libintl-a-y) $(libintl-so-y))) $(eval $(call add_IS_IN_lib,libm,$(libm-a-y) $(libm-so-y))) $(eval $(call add_IS_IN_lib,libnsl,$(libnsl-a-y) $(libnsl-so-y))) $(eval $(call add_IS_IN_lib,libpthread/$(PTNAME),$(libpthread-a-y) $(libpthread-so-y) $(libpthread-nonshared-y))) $(eval $(call add_IS_IN_lib,libpthread/$(PTNAME)_db,$(libthread_db-a-y) $(libthread_db-so-y))) $(eval $(call add_IS_IN_lib,libresolv,$(libresolv-a-y) $(libresolv-so-y))) $(eval $(call add_IS_IN_lib,librt,$(librt-a-y) $(librt-so-y))) $(eval $(call add_IS_IN_lib,libutil,$(libutil-a-y) $(libutil-so-y))) $(eval $(call add_IS_IN_lib,libubacktrace,$(libubacktrace-a-y) $(libubacktrace-so-y))) shared_objs = $(libc-y:.o=.os) $(libc-shared-y) $(libc-nonshared-y) \ $(libcrypt-so-y) $(libdl-so-y) \ $(libintl-so-y) $(libm-so-y) $(libnsl-so-y) \ $(libpthread-so-y) $(libpthread-nonshared-y) $(libthread_db-so-y) \ $(libresolv-so-y) $(librt-so-y) \ $(ldso-y) \ $(libutil-so-y) $(libubacktrace-so-y) ar_objs = $(libc-y) $(libc-static-y) $(libcrypt-a-y) \ $(libdl-a-y) $(libintl-a-y) $(libm-a-y) $(libnsl-a-y) \ $(libpthread-a-y) $(libthread_db-a-y) \ $(libresolv-a-y) $(librt-a-y) $(libutil-a-y) $(libubacktrace-a-y) ifeq ($(DOPIC),y) ar_objs := $(ar_objs:.o=.os) endif flat_objs = $(lib-gdb-y) ifeq ($(HAVE_SHARED),y) all_objs: $(sort $(shared_objs) $(ar_objs)) else all_objs: $(ar_objs) endif $(shared_objs) $(ar_objs): | $(sub_headers) define objects_with_syms $(foreach o,$(2),$(if $(shell $(NM) $(1) $(o) | grep .),$(o))) endef headers-y: $(headers-y) @true MAKEFLAGS += --no-print-directory SHELL_SET_X := set +x define rel_srcdir $(shell $(CONFIG_SHELL) $(top_srcdir)/extra/scripts/relative_path.sh $(@D) .) endef ifneq ($(findstring s,$(MAKEFLAGS)),) export MAKE_IS_SILENT := y SECHO := -@false DISP := sil Q := @ else export MAKE_IS_SILENT := n SECHO := @echo ifneq ($(V)$(VERBOSE),) ifeq ($(V),1) DISP := bri# brief, like pur but with defines Q := @ else SHELL_SET_X := set -x DISP := ver Q := endif else DISP := pur Q := @ endif endif show_objs = $(subst $(top_builddir),,$(subst ../,,$@)) define show_defs $(filter -D%,$(1)) endef define show_ldflags $(subst $(comma), ,$(subst -Wl$(comma),,$(filter -Wl%,$(1)))) endef pur_disp_compile.c = echo " "CC $(show_objs) pur_disp_compile.i = echo " "CPP $(show_objs) pur_disp_compile.s = echo " "CC-S $(show_objs) pur_disp_compile.u = echo " "CC $(show_objs) pur_disp_compile.S = echo " "AS $(show_objs) pur_disp_compile.m = $(pur_disp_compile.c) pur_disp_compile.mi= echo " "CPP-m $(show_objs) pur_disp_compile-m = echo " "CC-m $(show_objs) pur_disp_hcompile.u= echo " "HOSTCC $(show_objs) pur_disp_hcompile.o= echo " "HOSTCC-o $(show_objs) pur_disp_strip = echo " "STRIP $(STRIP_FLAGS) $@ pur_disp_t_strip = echo " "STRIP $(STRIP_FLAGS) $@ pur_disp_ar = echo " "AR $(ARFLAGS) $@ pur_disp_ld = echo " "LD $(1) pur_disp_ln = echo " "LN $(show_objs) pur_disp_mkdir = echo " "MKDIR $(show_objs) pur_disp_gen = echo " "GEN $(show_objs) pur_disp_install = echo " "INSTALL $(1) pur_disp_unifdef = echo " "UNIFDEF $(show_objs) pur_disp_rm = echo " "CLEAN $(subst CLEAN_,,$(patsubst HEADERCLEAN_%,include \(%\),$@)) sil_disp_compile.c = true sil_disp_compile.i = true sil_disp_compile.s = true sil_disp_compile.u = true sil_disp_compile.S = true sil_disp_compile.m = true sil_disp_compile.mi= true sil_disp_compile-m = true sil_disp_hcompile.u= true sil_disp_hcompile.o= true sil_disp_strip = true sil_disp_t_strip = true sil_disp_ar = true sil_disp_ld = true sil_disp_ln = true sil_disp_mkdir = true sil_disp_gen = true sil_disp_install = true sil_disp_unifdef = true sil_disp_rm = true bri_disp_compile.c = $(pur_disp_compile.c) $(call show_defs,$(cmd_compile.c)) bri_disp_compile.i = $(pur_disp_compile.i) $(call show_defs,$(cmd_compile.i)) bri_disp_compile.s = $(pur_disp_compile.s) $(call show_defs,$(cmd_compile.s)) bri_disp_compile.u = $(pur_disp_compile.u) $(call show_defs,$(cmd_compile.u)) bri_disp_compile.S = $(pur_disp_compile.S) $(call show_defs,$(cmd_compile.S)) bri_disp_compile.m = $(pur_disp_compile.m) $(call show_defs,$(cmd_compile.m)) bri_disp_compile.mi = $(pur_disp_compile.mi) $(call show_defs,$(cmd_compile.mi)) bri_disp_compile-m = $(pur_disp_compile-m) $(call show_defs,$(cmd_compile-m)) bri_disp_hcompile.u = $(pur_disp_hcompile.u) $(call show_defs,$(cmd_hcompile.u)) bri_disp_hcompile.o = $(pur_disp_hcompile.o) $(call show_defs,$(cmd_hcompile.o)) bri_disp_strip = $(pur_disp_strip) bri_disp_t_strip = $(pur_disp_t_strip) bri_disp_ar = $(pur_disp_ar) bri_disp_ld = $(pur_disp_ld) $(call show_ldflags,$(cmd_ld)) bri_disp_ln = $(pur_disp_ln) bri_disp_mkdir = $(pur_disp_mkdir) bri_disp_gen = $(pur_disp_gen) bri_disp_install = $(pur_disp_install) bri_disp_unifdef = $(pur_disp_unifdef) bri_disp_rm = $(pur_disp_rm) esc=$(subst ','\'',$(1)) # ') ver_disp_compile.c = echo '$(call esc,$(cmd_compile.c))' ver_disp_compile.i = echo '$(call esc,$(cmd_compile.i))' ver_disp_compile.s = echo '$(call esc,$(cmd_compile.s))' ver_disp_compile.u = echo '$(call esc,$(cmd_compile.u))' ver_disp_compile.S = echo '$(call esc,$(cmd_compile.S))' ver_disp_compile.m = echo '$(call esc,$(cmd_compile.m))' ver_disp_compile.mi= echo '$(call esc,$(cmd_compile.mi))' ver_disp_compile-m = echo '$(call esc,$(cmd_compile-m))' ver_disp_hcompile.u= echo '$(call esc,$(cmd_hcompile.u))' ver_disp_hcompile.o= echo '$(call esc,$(cmd_hcompile.o))' ver_disp_strip = echo '$(call esc,$(cmd_strip))' ver_disp_t_strip = echo '$(call esc,$(cmd_t_strip))' ver_disp_ar = echo '$(call esc,$(cmd_ar))' ver_disp_ld = ver_disp_ln = ver_disp_mkdir = ver_disp_gen = ver_disp_install = ver_disp_unifdef = echo '$(call esc,$(cmd_unifdef))' ver_disp_rm = disp_compile.c = $($(DISP)_disp_compile.c) disp_compile.i = $($(DISP)_disp_compile.i) disp_compile.s = $($(DISP)_disp_compile.s) disp_compile.u = $($(DISP)_disp_compile.u) disp_compile.S = $($(DISP)_disp_compile.S) disp_compile.m = $($(DISP)_disp_compile.m) disp_compile.mi= $($(DISP)_disp_compile.mi) disp_compile-m = $($(DISP)_disp_compile-m) disp_hcompile.u= $($(DISP)_disp_hcompile.u) disp_hcompile.o= $($(DISP)_disp_hcompile.o) disp_strip = $($(DISP)_disp_strip) disp_t_strip = $($(DISP)_disp_t_strip) disp_ar = $($(DISP)_disp_ar) disp_ld = $($(DISP)_disp_ld) disp_ln = $($(DISP)_disp_ln) disp_mkdir = $($(DISP)_disp_mkdir) disp_gen = $($(DISP)_disp_gen) disp_install = $($(DISP)_disp_install) disp_unifdef = $($(DISP)_disp_unifdef) disp_rm = $($(DISP)_disp_rm) any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^) # ../foo/bar/baz.ext -> foo_bar_baz.ext variablify = $(subst /,_,$(subst $(top_builddir),,$(1))) # strip the top_builddir off everything to make the *string* idempotent for -C dirify = $(subst $(top_builddir),,$(patsubst -L$(top_builddir)%,-L%,$(patsubst -I$(top_builddir)%,-I%,$(1)))) # True if not identical. Neither order nor whitespace nor identical flags # matter. compare_flags = \ $(strip $(filter-out $(call dirify,$(cmd_$(call variablify,$(1)))), \ $(call dirify,$(cmd_$(call variablify,$(@))))) \ $(filter-out $(call dirify,$(cmd_$(call variablify,$(@)))), \ $(call dirify,$(cmd_$(call variablify,$(1)))))) # Rebuild if any prerequisite, the used CC or flags changed. # Previously used flags are stored in the corresponding .%.dep files maybe_exec = \ $(if $(strip $(compare_flags) $(any-prereq)), \ @set -e; \ $(disp_$(1)); \ $(cmd_$(1)); \ echo 'cmd_$(call variablify,$@) := $(call dirify,$(cmd_$(call variablify,$1)))' >> $(dir $@).$(notdir $@).dep) # collect flags of domulti prereqs #collect_multi_flags = $(CFLAGS-$(notdir $(d))) $(CFLAGS-$(notdir $(patsubst %/,%,$(dir $(d))))) collect_multi_flags = $(CFLAGS-$(notdir $(patsubst %/,%,$(dir $(d))))) #sub_srcdir = $(word 1,$(filter-out lib extra locale libpthread,$(wordlist 1,2,$(subst /, ,$(subst $(top_srcdir),,$(dir $<)))))) CFLAGS_gen.dep = -MT $@ -MD -MP -MF $(dir $@).$(notdir $@).dep cmd_compile.c = $(CC) -c $< -o $@ \ $(filter-out $(CFLAGS-OMIT-$(notdir $<)), \ $(CFLAGS) \ $(CFLAGS-for-library-members) \ $(CFLAGS-$(suffix $@)) \ $(CFLAGS-y-$(subst $(top_srcdir),,$(&1 | LC_ALL=C \ $(SED) -e '/^=========/,/^=========/!d;/^=========/d' \ -e 's/\. = .* + SIZEOF_HEADERS;/& $(SYMBOL_PREFIX)_begin = . - SIZEOF_HEADERS;/' > $@.lds endef define link.so $(Q)$(RM) $@ $@.$(2) $(dir $@)$(1) @$(disp_ld) $(Q)$(CC) $(LDFLAGS-$(notdir $@)) $(LDFLAGS-y-$(@F)) \ -Wl,-soname=$(notdir $@).$(2) \ $(CFLAG_-nostdlib) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) \ -Wl,--whole-archive $(firstword $^) -Wl,--no-whole-archive \ $(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@)) $(Q)$(LN) -sf $(1) $@.$(2) $(Q)$(LN) -sf $(1) $@ endef # CRT files needed by link-flat.so LINK_FLAT_CRTS := $(top_builddir)lib/Scrt1.o $(top_builddir)lib/crti.o \ $(top_builddir)lib/crtn.o # Create a shared flat library from the archive named by the first dependency. # $@ names the shared library's .gdb file, not the flat file itself. # (This is because the .gdb suffix makes the ELF file more distinctive # than the suffixless flat file.) # # Argument 1 is the shared library file -- i.e. $(@:.gdb=) -- and argument 2 # is the shared library identifier. If it wasn't for $(disp_ld), we could # avoid passing $(@:.gdb=) as an argument and use $(@:.gdb=) instead of $(1). # # This is so far only used for libc, for which we want to link the entire # libgcc into the shared object. define link-flat.so $(Q)$(RM) $(1) $@ @$(disp_ld) $(Q)$(CC) $(LDFLAGS-$(notdir $@)) $(CFLAG_-nostdlib) -o $(1) \ -Wl,-elf2flt -Wl,-shared-lib-id,$(2) $(top_builddir)lib/Scrt1.o \ $(top_builddir)/lib/crti.o -Wl,--whole-archive $(firstword $^) \ $(LIBGCC) -Wl,--no-whole-archive $(LIBS-$(notdir $@)) $(LIBGCC) \ $(top_builddir)/lib/crtn.o endef define linkm.so $(Q)$(RM) $@ $@.$(2) $(dir $@)$(1) $(do_strip) @$(disp_ld) $(Q)$(CC) $(LDFLAGS-$(notdir $@)) -Wl,-soname=$(notdir $@).$(2) \ $(CFLAG_-nostdlib) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) \ $^ \ $(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@)) $(Q)$(LN) -sf $(1) $@.$(2) $(Q)$(LN) -sf $(1) $@ endef CFLAGS-.os+=$(PICFLAG) CFLAGS-.oS+=$(PICFLAG) -DSHARED $(top_builddir)%.o: $(top_srcdir)%.c FORCE ; $(compile.c) $(top_builddir)%.os: $(top_srcdir)%.c FORCE | pregen; $(compile.c) $(top_builddir)%.oS: $(top_srcdir)%.c FORCE | pregen; $(compile.c) $(top_builddir)%.o: $(top_srcdir)%.S FORCE ; $(compile.S) $(top_builddir)%.os: $(top_srcdir)%.S FORCE | pregen; $(compile.S) $(top_builddir)%.oS: $(top_srcdir)%.S FORCE | pregen; $(compile.S) $(top_builddir)%.o: $(top_srcdir)%.s FORCE ; $(compile.S) $(top_builddir)%.os: $(top_srcdir)%.s FORCE ; $(compile.S) $(top_builddir)%.oS: $(top_srcdir)%.s FORCE | pregen; $(compile.S) $(top_builddir)%.i: $(top_srcdir)%.c FORCE | pregen; $(compile.i) $(top_builddir)%.i: $(top_srcdir)%.S FORCE | pregen; $(compile.i) $(top_builddir)%.s: $(top_srcdir)%.c FORCE | pregen; $(compile.s) $(top_builddir)%.s: $(top_srcdir)%.S FORCE | pregen; $(compile.s) $(top_builddir)%.dep: $(top_builddir)lib/interp.c: | $(top_builddir)lib $(Q)echo "/* Force shared libraries to know about the correct library loader */" > $@.tmp $(Q)echo "#include " >> $@.tmp $(Q)echo "const char __dl_ldso__[] attribute_hidden __attribute__ ((weak)) __attribute__ ((section " \ "(\".interp\"))) =\""$(RUNTIME_PREFIX)$(MULTILIB_DIR)/$(UCLIBC_LDSO)"\";" >> $@.tmp $(Q)$(SED) -i -e 's://:/:g' $@.tmp $(Q)mv $@.tmp $@ $(interp): $(top_builddir)lib/interp.c | $(sub_headers) $(compile.c) $(Q)$(STRIPTOOL) -x -R .note -R .comment $@ $(ldso): $(Q)cd $(top_builddir); $(MAKE) lib/$(patsubst %.$(ABI_VERSION),%,$(notdir $@)) $(libc): $(Q)cd $(top_builddir); $(MAKE) lib/$(patsubst %.$(ABI_VERSION),%,$(notdir $@)) CRT := crt1 ifeq ($(HAVE_SHARED)$(UCLIBC_FORMAT_SHARED_FLAT),y) CRTS=$(top_builddir)lib/$(CRT).o $(top_builddir)lib/S$(CRT).o else CRTS=$(top_builddir)lib/$(CRT).o endif ASFLAGS-$(CRT).o := -DL_$(CRT) ASFLAGS-S$(CRT).o := $(PIEFLAG) -DL_S$(CRT) $(CRTS): $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/$(CRT).S $(compile.S) $(Q)$(STRIPTOOL) -x -R .note -R .comment $@ ifeq ($(UCLIBC_CTOR_DTOR),y) CTOR_TARGETS=$(top_builddir)lib/crti.o $(top_builddir)lib/crtn.o else CTOR_TARGETS:= endif ifeq ($(UCLIBC_FORMAT_FDPIC_ELF),y) CRTRELOC=$(top_builddir)lib/crtreloc.o $(CRTRELOC): $(top_builddir)lib/%.o : $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/%.c $(compile.c) endif ifneq ($(wildcard $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/initfini.c),) CFLAGS-initfini.s := -S -g0 $(PICFLAG) -fno-inline-functions -finhibit-size-directive $(top_builddir)lib/initfini.s: $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/initfini.c | $(top_builddir)lib $(compile.c) $(top_builddir)lib/defs.h: $(top_builddir)lib/initfini.s | $(top_builddir)lib $(Q)sed -n -e '/@TESTS_BEGIN/,/@TESTS_END/p' $< | \ gawk -f $(top_srcdir)extra/scripts/defs.awk > $@.tmp $(Q)mv $@.tmp $@ $(top_builddir)lib/crti.S: $(top_builddir)lib/initfini.s $(top_builddir)lib/defs.h $(Q)sed -n -e '1,/@HEADER_ENDS/p' \ -e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \ -e '/@TRAILER_BEGINS/,$$p' $< > $@ $(top_builddir)lib/crtn.S: $(top_builddir)lib/initfini.s $(Q)sed -n -e '1,/@HEADER_ENDS/p' \ -e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \ -e '/@TRAILER_BEGINS/,$$p' $< > $@ $(CTOR_TARGETS): $(top_builddir)lib/%.o : $(top_builddir)lib/%.S $(compile.S) $(PICFLAG) $(SSP_DISABLE_FLAGS) else $(CTOR_TARGETS): $(top_builddir)lib/%.o : $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/%.S $(compile.S) $(PICFLAG) $(SSP_DISABLE_FLAGS) endif #ifeq ($(TARGET_ARCH),nios) #CRTS_COMPAT := $(top_builddir)lib/crt0.o #$(CRTS_COMPAT): # ln -fs crt1.o $(top_builddir)lib/crt0.o #else CRTS_COMPAT := #endif startfiles = $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC) $(crt-y): $(startfiles) $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC): | headers $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC) $(LINK_FLAT_CRTS) $(SHARED_START_FILES) $(SHARED_END_FILES) : | $(top_builddir)lib $(top_builddir)lib/$(NONSHARED_LIBNAME): $(libc-nonshared-y) $(Q)$(RM) $@ $(do_ar) $(top_builddir)lib/libpthread_nonshared.a: $(libpthread-nonshared-y) $(Q)$(RM) $@ $(do_ar) files.dep := $(libc-a-y) $(libc-so-y) $(libc-nonshared-y) \ $(libm-a-y) $(libm-so-y) \ $(libpthread-a-y) $(libpthread-so-y) $(libpthread-nonshared-y) \ $(libthread_db-a-y) $(libthread_db-so-y) $(libpthread-generated-y) \ $(START_FILE-libpthread.so) $(END_FILE-libpthread.so) \ $(PTHREAD_INITFINI:.c=.s) \ $(librt-a-y) $(librt-so-y) $(libresolv-a-y) $(libresolv-so-y) \ $(libcrypt-a-y) $(libcrypt-so-y) $(libutil-a-y) $(libutil-so-y) \ $(libnsl-a-y) $(libnsl-so-y) $(ldso-y) $(libdl-a-y) $(libdl-so-y) \ $(libubacktrace-a-y) $(libubacktrace-so-y) .depends.dep := \ $(patsubst %.s,%.s.dep,$(filter %.s,$(files.dep))) \ $(patsubst %.o,%.o.dep,$(filter %.o,$(files.dep))) \ $(patsubst %.os,%.os.dep,$(filter %.os,$(files.dep))) \ $(patsubst %.oS,%.oS.dep,$(filter %.oS,$(files.dep))) # Oh, and prepend a dot to the basename so i don't have to change my habit of # calling 'size thefile.o*' .depends.dep := $(foreach f,$(.depends.dep),$(dir $(f)).$(notdir $(f))) .depends.dep := $(wildcard $(.depends.dep)) FORCE: clean: objclean-y headers_clean-y realclean: clean menuconfig-clean-y $(Q)$(RM) $(.depends.dep) objclean-y: $(objclean-y) headers_clean-y: $(headers_clean-y) ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) ifneq ($(strip $(.depends.dep)),) .NOEXPORT: -include $(.depends.dep) endif endif # vi: ft=make :