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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Minios-devel] [UNIKRAFT PATCH v3 05/23] kbuild: Add build helper function from Linux
Hi Sharan,
This patch looks ok.
-- Felipe
Reviewed-by: Felipe Huici <felipe.huici@xxxxxxxxx>
On 19.09.19, 11:17, "Minios-devel on behalf of Sharan Santhanam"
<minios-devel-bounces@xxxxxxxxxxxxxxxxxxxx on behalf of
Sharan.Santhanam@xxxxxxxxx> wrote:
Import Makefile.rules from scripts/kbuild.include.
Tag: v5.2
Signed-off-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
---
support/kconfig.new/Makefile.br | 1 +
support/kconfig.new/Makefile.rules | 84 +++++++++++++++++
.../patches/03-include-makefile-helper-from-kernel | 102
+++++++++++++++++++++
3 files changed, 187 insertions(+)
create mode 100644 support/kconfig.new/Makefile.rules
create mode 100644
support/kconfig.new/patches/03-include-makefile-helper-from-kernel
diff --git a/support/kconfig.new/Makefile.br
b/support/kconfig.new/Makefile.br
index 41c5ce1..0fdbe9a 100644
--- a/support/kconfig.new/Makefile.br
+++ b/support/kconfig.new/Makefile.br
@@ -4,6 +4,7 @@ top_builddir=../../
srctree := .
obj ?= .
+include Makefile.rules
include Makefile
#HOSTCFLAGS+=-Dinline="" -include foo.h
-include $(obj)/.depend
diff --git a/support/kconfig.new/Makefile.rules
b/support/kconfig.new/Makefile.rules
new file mode 100644
index 0000000..78a9c81
--- /dev/null
+++ b/support/kconfig.new/Makefile.rules
@@ -0,0 +1,84 @@
+kecho := echo
+comma := ,
+
+
+dot-target = $(dir $@).$(notdir $@)
+
+any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard
$^),$^)
+
+arg-check = $(if $(strip $(cmd_$@)),,1)
+
+make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst
$$,$$$$,$(cmd_$(1)))))
+
+# printing commands
+cmd = @set -e; $(echo-cmd) $(cmd_$(1))
+
+depfile = $(subst $(comma),_,$(dot-target).d)
+depflags = -Wp$(comma)-MD$(comma)$(call dot-target)
+
+cmd_and_fixdep = \
+ $(cmd); \
+ $(obj)/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).cmd;\
+ rm -f $(depfile)
+
+if_changed_dep = $(if $(strip $(any-prereq)
$(arg-check)),$(cmd_and_fixdep),@:)
+
+define multi_depend
+$(foreach m, $(notdir $1), \
+ $(eval $(obj)/$m: \
+ $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
+endef
+
+###
+# filechk is used to check if the content of a generated file is updated.
+# Sample usage:
+#
+# filechk_sample = echo $(KERNELRELEASE)
+# version.h: FORCE
+# $(call filechk,sample)
+#
+# The rule defined shall write to stdout the content of the new file.
+# The existing file will be compared with the new one.
+# - If no file exist it is created
+# - If the content differ the new file is used
+# - If they are equal no change, and no timestamp update
+# - stdin is piped in from the first prerequisite ($<) so one has
+# to specify a valid file as first prerequisite (often the kbuild file)
+define filechk
+ $(Q)set -e; \
+ mkdir -p $(dir $@); \
+ { $(filechk_$(1)); } > $@.tmp; \
+ if [ -r $@ ] && cmp -s $@ $@.tmp; then \
+ rm -f $@.tmp; \
+ else \
+ $(kecho) ' UPD $@'; \
+ mv -f $@.tmp $@; \
+ fi
+endef
+
+# Execute command if command has changed or prerequisite(s) are updated.
+if_changed = $(if $(strip $(any-prereq) $(arg-check)), \
+ $(cmd);\
+ printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
+
+# LEX
+#
---------------------------------------------------------------------------
+quiet_cmd_flex = LEX $@
+cmd_flex = $(LEX) -o$@ -L $<
+
+$(obj)/%.lex.c: $(src)/%.l FORCE
+ $(call if_changed,flex)
+
+# YACC
+#
---------------------------------------------------------------------------
+quiet_cmd_bison = YACC $@
+cmd_bison = $(YACC) -o$@ -t -l $<
+
+$(obj)/%.tab.c: $(src)/%.y FORCE
+ $(call if_changed,bison)
+
+quiet_cmd_bison_h = YACC $@
+cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
+
+$(obj)/%.tab.h: $(src)/%.y FORCE
+ $(call if_changed,bison_h)
diff --git
a/support/kconfig.new/patches/03-include-makefile-helper-from-kernel
b/support/kconfig.new/patches/03-include-makefile-helper-from-kernel
new file mode 100644
index 0000000..35c79f8
--- /dev/null
+++ b/support/kconfig.new/patches/03-include-makefile-helper-from-kernel
@@ -0,0 +1,102 @@
+diff --git a/support/kconfig.new/Makefile.br
b/support/kconfig.new/Makefile.br
+index 41c5ce1..0fdbe9a 100644
+--- a/support/kconfig.new/Makefile.br
++++ b/support/kconfig.new/Makefile.br
+@@ -4,6 +4,7 @@ top_builddir=../../
+ srctree := .
+ obj ?= .
+
++include Makefile.rules
+ include Makefile
+ #HOSTCFLAGS+=-Dinline="" -include foo.h
+ -include $(obj)/.depend
+diff --git a/support/kconfig.new/Makefile.rules
b/support/kconfig.new/Makefile.rules
+new file mode 100644
+index 0000000..78a9c81
+--- /dev/null
++++ b/support/kconfig.new/Makefile.rules
+@@ -0,0 +1,84 @@
++kecho := echo
++comma := ,
++
++
++dot-target = $(dir $@).$(notdir $@)
++
++any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard
$^),$^)
++
++arg-check = $(if $(strip $(cmd_$@)),,1)
++
++make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst
$$,$$$$,$(cmd_$(1)))))
++
++# printing commands
++cmd = @set -e; $(echo-cmd) $(cmd_$(1))
++
++depfile = $(subst $(comma),_,$(dot-target).d)
++depflags = -Wp$(comma)-MD$(comma)$(call dot-target)
++
++cmd_and_fixdep = \
++ $(cmd); \
++ $(obj)/fixdep $(depfile) $@ '$(make-cmd)' > $(dot-target).cmd;\
++ rm -f $(depfile)
++
++if_changed_dep = $(if $(strip $(any-prereq)
$(arg-check)),$(cmd_and_fixdep),@:)
++
++define multi_depend
++$(foreach m, $(notdir $1), \
++ $(eval $(obj)/$m: \
++ $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
++endef
++
++###
++# filechk is used to check if the content of a generated file is updated.
++# Sample usage:
++#
++# filechk_sample = echo $(KERNELRELEASE)
++# version.h: FORCE
++# $(call filechk,sample)
++#
++# The rule defined shall write to stdout the content of the new file.
++# The existing file will be compared with the new one.
++# - If no file exist it is created
++# - If the content differ the new file is used
++# - If they are equal no change, and no timestamp update
++# - stdin is piped in from the first prerequisite ($<) so one has
++# to specify a valid file as first prerequisite (often the kbuild file)
++define filechk
++ $(Q)set -e; \
++ mkdir -p $(dir $@); \
++ { $(filechk_$(1)); } > $@.tmp; \
++ if [ -r $@ ] && cmp -s $@ $@.tmp; then \
++ rm -f $@.tmp; \
++ else \
++ $(kecho) ' UPD $@'; \
++ mv -f $@.tmp $@; \
++ fi
++endef
++
++# Execute command if command has changed or prerequisite(s) are updated.
++if_changed = $(if $(strip $(any-prereq) $(arg-check)), \
++ $(cmd);\
++ printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
++
++# LEX
++#
---------------------------------------------------------------------------
++quiet_cmd_flex = LEX $@
++cmd_flex = $(LEX) -o$@ -L $<
++
++$(obj)/%.lex.c: $(src)/%.l FORCE
++ $(call if_changed,flex)
++
++# YACC
++#
---------------------------------------------------------------------------
++quiet_cmd_bison = YACC $@
++cmd_bison = $(YACC) -o$@ -t -l $<
++
++$(obj)/%.tab.c: $(src)/%.y FORCE
++ $(call if_changed,bison)
++
++quiet_cmd_bison_h = YACC $@
++cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
++
++$(obj)/%.tab.h: $(src)/%.y FORCE
++ $(call if_changed,bison_h)
--
2.7.4
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