1 files changed, 84 insertions, 0 deletions
diff --git a/kernel/tools/scripts/Makefile.include b/kernel/tools/scripts/Makefile.include
new file mode 100644
index 000000000..8abbef164
--- /dev/null
+++ b/kernel/tools/scripts/Makefile.include
@@ -0,0 +1,84 @@
+ifneq ($(O),)
+ifeq ($(origin O), command line)
+	dummy := $(if $(shell test -d $(O) || echo $(O)),$(error O=$(O) does not exist),)
+	ABSOLUTE_O := $(shell cd $(O) ; pwd)
+	OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/)
+	COMMAND_O := O=$(ABSOLUTE_O)
+ifeq ($(objtree),)
+	objtree := $(O)
+endif
+endif
+endif
+
+# check that the output directory actually exists
+ifneq ($(OUTPUT),)
+OUTDIR := $(shell cd $(OUTPUT) && /bin/pwd)
+$(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))
+endif
+
+#
+# Include saner warnings here, which can catch bugs:
+#
+EXTRA_WARNINGS := -Wbad-function-cast
+EXTRA_WARNINGS += -Wdeclaration-after-statement
+EXTRA_WARNINGS += -Wformat-security
+EXTRA_WARNINGS += -Wformat-y2k
+EXTRA_WARNINGS += -Winit-self
+EXTRA_WARNINGS += -Wmissing-declarations
+EXTRA_WARNINGS += -Wmissing-prototypes
+EXTRA_WARNINGS += -Wnested-externs
+EXTRA_WARNINGS += -Wno-system-headers
+EXTRA_WARNINGS += -Wold-style-definition
+EXTRA_WARNINGS += -Wpacked
+EXTRA_WARNINGS += -Wredundant-decls
+EXTRA_WARNINGS += -Wshadow
+EXTRA_WARNINGS += -Wstrict-aliasing=3
+EXTRA_WARNINGS += -Wstrict-prototypes
+EXTRA_WARNINGS += -Wswitch-default
+EXTRA_WARNINGS += -Wswitch-enum
+EXTRA_WARNINGS += -Wundef
+EXTRA_WARNINGS += -Wwrite-strings
+EXTRA_WARNINGS += -Wformat
+
+ifneq ($(findstring $(MAKEFLAGS), w),w)
+PRINT_DIR = --no-print-directory
+else
+NO_SUBDIR = :
+endif
+
+#
+# Define a callable command for descending to a new directory
+#
+# Call by doing: $(call descend,directory[,target])
+#
+descend = \
+	+mkdir -p $(OUTPUT)$(1) && \
+	$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)
+
+QUIET_SUBDIR0  = +$(MAKE) $(COMMAND_O) -C # space to separate -C and subdir
+QUIET_SUBDIR1  =
+
+ifneq ($(findstring $(MAKEFLAGS),s),s)
+  ifneq ($(V),1)
+	QUIET_CC       = @echo '  CC       '$@;
+	QUIET_CC_FPIC  = @echo '  CC FPIC  '$@;
+	QUIET_AR       = @echo '  AR       '$@;
+	QUIET_LINK     = @echo '  LINK     '$@;
+	QUIET_MKDIR    = @echo '  MKDIR    '$@;
+	QUIET_GEN      = @echo '  GEN      '$@;
+	QUIET_SUBDIR0  = +@subdir=
+	QUIET_SUBDIR1  = ;$(NO_SUBDIR) \
+			  echo '  SUBDIR   '$$subdir; \
+			 $(MAKE) $(PRINT_DIR) -C $$subdir
+	QUIET_FLEX     = @echo '  FLEX     '$@;
+	QUIET_BISON    = @echo '  BISON    '$@;
+
+	descend = \
+		+@echo	       '  DESCEND  '$(1); \
+		mkdir -p $(OUTPUT)$(1) && \
+		$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)
+
+	QUIET_CLEAN    = @printf '  CLEAN    %s\n' $1;
+	QUIET_INSTALL  = @printf '  INSTALL  %s\n' $1;
+  endif
+endif