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-rw-r--r--Rules.mak195
-rw-r--r--applets/Makefile35
2 files changed, 230 insertions, 0 deletions
diff --git a/Rules.mak b/Rules.mak
new file mode 100644
index 0000000..a6f1116
--- /dev/null
+++ b/Rules.mak
@@ -0,0 +1,195 @@
+#
+# This file contains rules which are shared between multiple Makefiles.
+#
+
+#
+# False targets.
+#
+.PHONY: dummy
+
+#
+# Special variables which should not be exported
+#
+unexport EXTRA_AFLAGS
+unexport EXTRA_CFLAGS
+unexport EXTRA_LDFLAGS
+unexport EXTRA_ARFLAGS
+unexport SUBDIRS
+unexport SUB_DIRS
+unexport ALL_SUB_DIRS
+unexport O_TARGET
+
+unexport obj-y
+unexport obj-n
+unexport obj-
+unexport export-objs
+unexport subdir-y
+unexport subdir-n
+unexport subdir-
+
+#
+# Get things started.
+#
+first_rule: sub_dirs
+ $(MAKE) all_targets
+
+SUB_DIRS := $(subdir-y)
+ALL_SUB_DIRS := $(sort $(subdir-y) $(subdir-n) $(subdir-))
+
+
+#
+# Common rules
+#
+
+%.s: %.c
+ $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$@) -S $< -o $@
+
+%.i: %.c
+ $(CPP) $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$@) $< > $@
+
+%.o: %.c
+ $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$@) -c -o $@ $<
+ @ ( \
+ echo 'ifeq ($(strip $(subst $(comma),:,$(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$@))),$$(strip $$(subst $$(comma),:,$$(CFLAGS) $$(EXTRA_CFLAGS) $$(CFLAGS_$@))))' ; \
+ echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
+ echo 'endif' \
+ ) > $(dir $@)/.$(notdir $@).flags
+
+%.o: %.s
+ $(AS) $(AFLAGS) $(EXTRA_CFLAGS) -o $@ $<
+
+# Old makefiles define their own rules for compiling .S files,
+# but these standard rules are available for any Makefile that
+# wants to use them. Our plan is to incrementally convert all
+# the Makefiles to these standard rules. -- rmk, mec
+ifdef USE_STANDARD_AS_RULE
+
+%.s: %.S
+ $(CPP) $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$@) $< > $@
+
+%.o: %.S
+ $(CC) $(AFLAGS) $(EXTRA_AFLAGS) $(AFLAGS_$@) -c -o $@ $<
+
+endif
+
+%.lst: %.c
+ $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(CFLAGS_$@) -g -c -o $*.o $<
+ $(TOPDIR)/scripts/makelst $* $(TOPDIR) $(OBJDUMP)
+#
+#
+#
+all_targets: $(O_TARGET) $(L_TARGET)
+
+#
+# Rule to compile a set of .o files into one .o file
+#
+ifdef O_TARGET
+$(O_TARGET): $(obj-y)
+ rm -f $@
+ ifneq "$(strip $(obj-y))" ""
+ $(LD) $(EXTRA_LDFLAGS) -r -o $@ $(filter $(obj-y), $^)
+ else
+ $(AR) rcs $@
+ endif
+ @ ( \
+ echo 'ifeq ($(strip $(subst $(comma),:,$(EXTRA_LDFLAGS) $(obj-y))),$$(strip $$(subst $$(comma),:,$$(EXTRA_LDFLAGS) $$(obj-y))))' ; \
+ echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
+ echo 'endif' \
+ ) > $(dir $@)/.$(notdir $@).flags
+endif # O_TARGET
+
+#
+# Rule to compile a set of .o files into one .a file
+#
+ifdef L_TARGET
+$(L_TARGET): $(obj-y)
+ rm -f $@
+ $(AR) $(EXTRA_ARFLAGS) rcs $@ $(obj-y)
+ @ ( \
+ echo 'ifeq ($(strip $(subst $(comma),:,$(EXTRA_ARFLAGS) $(obj-y))),$$(strip $$(subst $$(comma),:,$$(EXTRA_ARFLAGS) $$(obj-y))))' ; \
+ echo 'FILES_FLAGS_UP_TO_DATE += $@' ; \
+ echo 'endif' \
+ ) > $(dir $@)/.$(notdir $@).flags
+endif
+
+
+#
+# This make dependencies quickly
+#
+fastdep: dummy
+ $(TOPDIR)/scripts/mkdep $(CFLAGS) $(EXTRA_CFLAGS) -- $(wildcard *.[chS]) > .depend
+ifdef ALL_SUB_DIRS
+ $(MAKE) $(patsubst %,_sfdep_%,$(ALL_SUB_DIRS)) _FASTDEP_ALL_SUB_DIRS="$(ALL_SUB_DIRS)"
+endif
+
+ifdef _FASTDEP_ALL_SUB_DIRS
+$(patsubst %,_sfdep_%,$(_FASTDEP_ALL_SUB_DIRS)):
+ $(MAKE) -C $(patsubst _sfdep_%,%,$@) fastdep
+endif
+
+
+#
+# A rule to make subdirectories
+#
+subdir-list = $(sort $(patsubst %,_subdir_%,$(SUB_DIRS)))
+sub_dirs: dummy $(subdir-list)
+
+ifdef SUB_DIRS
+$(subdir-list) : dummy
+ $(MAKE) -C $(patsubst _subdir_%,%,$@)
+endif
+
+#
+# A rule to do nothing
+#
+dummy:
+
+#
+# This is useful for testing
+#
+script:
+ $(SCRIPT)
+
+#
+# include dependency files if they exist
+#
+ifneq ($(wildcard .depend),)
+include .depend
+endif
+
+ifneq ($(wildcard $(TOPDIR)/.hdepend),)
+include $(TOPDIR)/.hdepend
+endif
+
+#
+# Find files whose flags have changed and force recompilation.
+# For safety, this works in the converse direction:
+# every file is forced, except those whose flags are positively up-to-date.
+#
+FILES_FLAGS_UP_TO_DATE :=
+
+# For use in expunging commas from flags, which mung our checking.
+comma = ,
+
+FILES_FLAGS_EXIST := $(wildcard .*.flags)
+ifneq ($(FILES_FLAGS_EXIST),)
+include $(FILES_FLAGS_EXIST)
+endif
+
+FILES_FLAGS_CHANGED := $(strip \
+ $(filter-out $(FILES_FLAGS_UP_TO_DATE), \
+ $(O_TARGET) $(L_TARGET) $(active-objs) \
+ ))
+
+# A kludge: .S files don't get flag dependencies (yet),
+# because that will involve changing a lot of Makefiles. Also
+# suppress object files explicitly listed in $(IGNORE_FLAGS_OBJS).
+# This allows handling of assembly files that get translated into
+# multiple object files (see arch/ia64/lib/idiv.S, for example).
+FILES_FLAGS_CHANGED := $(strip \
+ $(filter-out $(patsubst %.S, %.o, $(wildcard *.S) $(IGNORE_FLAGS_OBJS)), \
+ $(FILES_FLAGS_CHANGED)))
+
+ifneq ($(FILES_FLAGS_CHANGED),)
+$(FILES_FLAGS_CHANGED): dummy
+endif
diff --git a/applets/Makefile b/applets/Makefile
new file mode 100644
index 0000000..0688a8f
--- /dev/null
+++ b/applets/Makefile
@@ -0,0 +1,35 @@
+# Makefile for busybox
+#
+# Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+
+TOPDIR :=..
+L_TARGET := applets.a
+EXTRA_CFLAGS+=-I $(TOPDIR)/applets
+
+obj-y :=
+obj-n :=
+obj- :=
+
+obj-y += applets.o busybox.o usage.o
+
+# Hand off to toplevel Rules.mak
+include $(TOPDIR)/Rules.mak
+
+clean:
+ rm -f $(L_TARGET) *.o core
+