.SUFFIXES: .c .S .o .os .oS .so .a .s .i
+PHONY := FORCE
+
+.PHONY: dummy $(PHONY) \
+ all check test $(clean_targets) \
+ config dist menuconfig oldconfig release \
+ subdirs utils help
+
# order is important, the stripping uses STRIP_FLAGS for lib-so, but not for lib-a
ifeq ($(HAVE_SHARED),y)
.LIBPATTERNS: "lib%.so"
libs: $(lib-so-y) $(lib-a-y)
-$(lib-so-y): $(interp)
+$(lib-so-y): | $(interp)
else
.LIBPATTERNS: "lib%.a"
ifeq ($(UCLIBC_FORMAT_SHARED_FLAT),y)
endif
objs: all_objs
-shared_objs = $(ldso-y) $(libc-y:.o=.os) $(libc-shared-y) $(libc-nonshared-y) $(libdl-so-y)
-shared_objs += $(libcrypt-so-y) $(libintl-so-y) $(libm-so-y) $(libnsl-so-y) $(libpthread-so-y) $(libpthread-nonshared-y)
-shared_objs += $(libthread_db-so-y) $(libresolv-so-y) $(librt-so-y) $(libutil-so-y)
-ar_objs = $(libc-y) $(libc-static-y) $(libdl-a-y) $(libcrypt-a-y) $(libintl-a-y) $(libm-a-y) $(libnsl-a-y)
-ar_objs += $(libpthread-a-y) $(libthread_db-a-y) $(libresolv-a-y) $(librt-a-y) $(libutil-a-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)
+
+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) $(libutil-a-y)
ifeq ($(DOPIC),y)
ar_objs := $(ar_objs:.o=.os)
endif
+flat_objs = $(lib-gdb-y)
ifeq ($(HAVE_SHARED),y)
all_objs: $(sort $(shared_objs) $(ar_objs))
ifneq ($(V)$(VERBOSE),)
SHELL_SET_X := set -x
DISP := ver
-Q :=
+Q :=
else
DISP := pur
Q := @
show_objs = $(subst ../,,$@)
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-m = echo " "CC-m $(show_objs)
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 $@
+pur_disp_mkdir = echo " "MKDIR $@
+pur_disp_gen = echo " "GEN $@
+pur_disp_unifdef = echo " "UNIFDEF $@
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-m = 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_unifdef = true
ver_disp_compile.c = echo $(cmd_compile.c)
+ver_disp_compile.i = echo $(cmd_compile.i)
+ver_disp_compile.s = echo $(cmd_compile.s)
+ver_disp_compile.u = echo $(cmd_compile.u)
ver_disp_compile.S = echo $(cmd_compile.S)
ver_disp_compile.m = echo $(cmd_compile.m)
ver_disp_compile-m = echo $(cmd_compile-m)
ver_disp_strip = echo $(cmd_strip)
ver_disp_t_strip = echo $(cmd_t_strip)
ver_disp_ar = echo $(cmd_ar)
-ver_disp_ld =
+ver_disp_ld =
+ver_disp_ln =
+ver_disp_mkdir =
+ver_disp_gen =
+ver_disp_unifdef = echo $(cmd_unifdef)
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-m = $($(DISP)_disp_compile-m)
disp_t_strip = $($(DISP)_disp_t_strip)
disp_ar = $($(DISP)_disp_ar)
disp_ld = $($(DISP)_disp_ld)
-
-cmd_compile.c = $(CC) -c $< -o $@ $(CFLAGS) $(ARCH_CFLAGS) $(CFLAGS-$(suffix $@)) $(filter-out $(CFLAGS-OMIT-$(notdir $<)),$(CFLAGS-$(notdir $(^D)))) $(CFLAGS-$(subst $(top_srcdir),,$(dir $<))) $(CFLAGS-$(notdir $<)) $(CFLAGS-$(notdir $@))
-cmd_compile.S = $(cmd_compile.c) -D__ASSEMBLER__ $(ASFLAGS) $(ARCH_ASFLAGS) $(ASFLAGS-$(suffix $@)) $(ASFLAGS-$(notdir $<)) $(ASFLAGS-$(notdir $@))
+disp_ln = $($(DISP)_disp_ln)
+disp_mkdir = $($(DISP)_disp_mkdir)
+disp_gen = $($(DISP)_disp_gen)
+disp_unifdef = $($(DISP)_disp_unifdef)
+
+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)
+
+
+CFLAGS_gen.dep = -MT $@ -MD -MP -MF $(dir $@).$(notdir $@).dep
+
+cmd_compile.c = $(CC) -c $< -o $@ $(CFLAGS) $(ARCH_CFLAGS) \
+ $(CFLAGS-$(suffix $@)) \
+ $(filter-out $(CFLAGS-OMIT-$(notdir $<)),$(CFLAGS-$(notdir $(<D)))) \
+ $(CFLAGS-$(subst $(top_srcdir),,$(dir $<))) \
+ $(CFLAGS-$(notdir $<)) \
+ $(CFLAGS-$(notdir $@)) \
+ $(CFLAGS_gen.dep)
+cmd_compile.i = $(cmd_compile.c:-c=-E -dD $(EXTRA_CPPFLAGS))
+cmd_compile.s = $(cmd_compile.c:-c=-S)
+cmd_compile.u = $(CC) $^ $(DEPS-$(notdir $@)) -o $@ $(CFLAGS) $(CFLAGS-$(notdir $(^D))) $(CFLAGS-$(notdir $@)) $(CFLAGS_gen.dep)
+cmd_compile.S = $(filter-out -std=gnu99, $(cmd_compile.c)) -D__ASSEMBLER__ $(ASFLAGS) $(ARCH_ASFLAGS) $(ASFLAGS-$(suffix $@)) $(ASFLAGS-$(notdir $<)) $(ASFLAGS-$(notdir $@))
cmd_compile.m = $(cmd_compile.c) -DL_$(patsubst %$(suffix $(notdir $@)),%,$(notdir $@))
+
cmd_compile-m = $(CC) $^ -c -o $@ $(CFLAGS) $(ARCH_CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(notdir $(@D))) $(CFLAGS-$(notdir $@))
cmd_strip = $(STRIPTOOL) $(STRIP_FLAGS) $^
cmd_t_strip = $(STRIPTOOL) $(STRIP_FLAGS) $@
cmd_ar = $(AR) $(ARFLAGS) $@ $^
-compile.c = @$(disp_compile.c) ; $(cmd_compile.c)
-compile.i = $(cmd_compile.c:-c=-E -dD)
-compile.s = $(cmd_compile.c:-c=-S)
-compile.S = @$(disp_compile.S) ; $(cmd_compile.S)
-compile.m = @$(disp_compile.m) ; $(cmd_compile.m)
-compile-m = @$(disp_compile-m) ; $(cmd_compile-m)
+define do_ln
+ @$(disp_ln)
+ $(Q)$(LN) -fs
+endef
+
+compile.c = @$(call maybe_exec,compile.c)
+compile.i = $(call maybe_exec,compile.i)
+compile.s = $(call maybe_exec,compile.s)
+compile.S = @$(call maybe_exec,compile.S)
+compile.m = @$(call maybe_exec,compile.m)
+compile-m = @$(disp_compile-m) ; $(cmd_compile-m) ; $(cmd_t_strip)
do_strip = @$(disp_strip) ; $(cmd_strip)
do_t_strip= @$(disp_t_strip) ; $(cmd_t_strip)
-do_ar = @$(disp_ar) ; $(cmd_ar)
+do_unifdef= @$(disp_unifdef) ; $(cmd_unifdef)
+define do_ar
+ $(do_strip)
+ @$(disp_ar) ; $(cmd_ar)
+endef
define compile.u
- @$(disp_compile.c)
- $(Q)$(CC) $^ $(DEPS-$(notdir $@)) -o $@ $(CFLAGS) $(CFLAGS-$(notdir $(^D))) $(CFLAGS-$(notdir $@))
- @$(disp_strip)
- $(Q)$(STRIPTOOL) $(STRIP_FLAGS) $@
+ @$(disp_compile.u) ; $(cmd_compile.u)
+ @$(disp_t_strip)
endef
hcompile.u = $(HOSTCC) $^ $(DEPS-$(notdir $@)) -o $@ $(BUILD_LDFLAGS) $(BUILD_LDFLAGS-$(notdir $(^D))) $(BUILD_LDFLAGS-$(notdir $@)) $(BUILD_CFLAGS) $(BUILD_CFLAGS-$(notdir $(^D))) $(BUILD_CFLAGS-$(notdir $@))
hcompile.o = $(HOSTCC) $^ $(DEPS-$(notdir $@)) -c -o $@ $(BUILD_CFLAGS) $(BUILD_CFLAGS-$(notdir $(^D))) $(BUILD_CFLAGS-$(notdir $@))
define linkm.so
$(Q)$(INSTALL) -d $(dir $@)
$(Q)$(RM) $@ $@.$(2) $(dir $@)$(1)
+ $(do_strip)
@$(disp_ld)
$(Q)$(CC) $(LDFLAGS-$(notdir $@)) -Wl,-soname=$(notdir $@).$(2) \
- $(NOSTDLIB_CFLAGS) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) $^ \
+ $(NOSTDLIB_CFLAGS) -o $(dir $@)$(1) $(START_FILE-$(notdir $@)) \
+ $^ \
$(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@))
$(Q)$(LN) -sf $(1) $@.$(2)
$(Q)$(LN) -sf $(1) $@
CFLAGS-.os+=$(PICFLAG)
CFLAGS-.oS+=$(PICFLAG) -DSHARED
-%.o: %.c ; $(compile.c)
-%.os: %.c ; $(compile.c)
-%.oS: %.c ; $(compile.c)
-%.o: %.S ; $(compile.S)
-%.os: %.S ; $(compile.S)
-%.oS: %.S ; $(compile.S)
-%.o: %.s ; $(compile.S)
-%.os: %.s ; $(compile.S)
-%.oS: %.s ; $(compile.S)
-%.i: %.c ; $(compile.i)
-%.i: %.S ; $(compile.i)
-%.s: %.c ; $(compile.s)
-%.s: %.S ; $(compile.s)
+%.o: %.c FORCE ; $(compile.c)
+%.os: %.c FORCE ; $(compile.c)
+%.oS: %.c FORCE ; $(compile.c)
+%.o: %.S FORCE ; $(compile.S)
+%.os: %.S FORCE ; $(compile.S)
+%.oS: %.S FORCE ; $(compile.S)
+%.o: %.s FORCE ; $(compile.S)
+%.os: %.s FORCE ; $(compile.S)
+%.oS: %.s FORCE ; $(compile.S)
+%.i: %.c FORCE ; $(compile.i)
+%.i: %.S FORCE ; $(compile.i)
+%.s: %.c FORCE ; $(compile.s)
+%.s: %.S FORCE ; $(compile.s)
$(top_builddir)lib/interp.c: | $(sub_headers)
$(Q)$(INSTALL) -d $(dir $@)
$(libc):
@cd $(top_builddir); $(MAKE) lib/$(patsubst %.$(MAJOR_VERSION),%,$(notdir $@))
-$(headers_dep):
- $(Q)cd $(top_builddir); $(MAKE) headers
-
CRT := crt1
ifeq ($(HAVE_SHARED)$(UCLIBC_FORMAT_SHARED_FLAT),y)
CTOR_TARGETS:=
endif
+ifeq ($(UCLIBC_FORMAT_FDPIC_ELF),y)
+CRTRELOC=$(top_builddir)lib/crtreloc.o
+$(CRTRELOC): $(top_builddir)lib/%.o : $(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH)/%.c
+ $(Q)$(INSTALL) -d $(dir $@)
+ $(compile.c)
+endif
+
ifneq ($(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/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/,$$p' $< > $@
+ -e '/@_.*_PROLOG_BEGINS/,/@_.*_PROLOG_ENDS/p' \
+ -e '/@TRAILER_BEGINS/,$$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/,$$p' $< > $@
+ -e '/@_.*_EPILOG_BEGINS/,/@_.*_EPILOG_ENDS/p' \
+ -e '/@TRAILER_BEGINS/,$$p' $< > $@
$(CTOR_TARGETS): $(top_builddir)lib/%.o : $(top_builddir)lib/%.S
$(Q)$(INSTALL) -d $(dir $@)
CRTS_COMPAT :=
#endif
-$(crt-y): $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT)
-$(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT): | headers
+$(crt-y): $(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC)
+$(CRTS) $(CTOR_TARGETS) $(CRTS_COMPAT) $(CRTRELOC): | headers
$(top_builddir)lib/$(NONSHARED_LIBNAME): $(libc-nonshared-y)
$(Q)$(INSTALL) -d $(dir $@)
$(Q)$(RM) $@
- $(do_strip)
$(do_ar)
$(top_builddir)lib/libpthread_nonshared.a: $(libpthread-nonshared-y)
$(Q)$(INSTALL) -d $(dir $@)
$(Q)$(RM) $@
- $(do_strip)
$(do_ar)
-.PHONY: dummy create
+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) \
+ $(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)
+.depends.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
+ $(Q)$(RM) $(.depends.dep)
objclean-y: $(objclean-y)
headers_clean-y: $(headers_clean-y)
-.PHONY: \
- all check clean distclean test \
- config dist menuconfig oldconfig release \
- subdirs utils
+ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
+ifneq ($(strip $(.depends.dep)),)
+.NOEXPORT:
+-include $(.depends.dep)
+endif
+endif
+
+# vi: ft=make :
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