[PATCH 1/3] kbuild: move cmd_cc_o_c and cmd_as_o_S to scripts/Malefile.lib

From: Masahiro Yamada
Date: Wed Nov 13 2024 - 18:46:06 EST


The cmd_cc_o_c and cmd_as_o_S macros are duplicated in
scripts/Makefile.{build,modfinal,vmlinux}.

This commit factors them out to scripts/Makefile.lib.

No functional changes are intended.

Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---

scripts/Makefile.build | 8 --------
scripts/Makefile.lib | 12 ++++++++++++
scripts/Makefile.modfinal | 6 ++----
scripts/Makefile.vmlinux | 8 +-------
4 files changed, 15 insertions(+), 19 deletions(-)

diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 1aa928a6fb4f..24e10c821461 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -141,11 +141,6 @@ ifdef CONFIG_LTO_CLANG
cmd_ld_single_m = $(if $(is-single-obj-m), ; $(LD) $(ld_flags) -r -o $(tmp-target) $@; mv $(tmp-target) $@)
endif

-quiet_cmd_cc_o_c = CC $(quiet_modtag) $@
- cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< \
- $(cmd_ld_single_m) \
- $(cmd_objtool)
-
ifdef CONFIG_MODVERSIONS
# When module versioning is enabled the following steps are executed:
# o compile a <file>.o from <file>.c
@@ -336,9 +331,6 @@ cmd_cpp_s_S = $(CPP) $(a_flags) -o $@ $<
$(obj)/%.s: $(obj)/%.S FORCE
$(call if_changed_dep,cpp_s_S)

-quiet_cmd_as_o_S = AS $(quiet_modtag) $@
- cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool)
-
ifdef CONFIG_ASM_MODVERSIONS

# versioning matches the C process described above, with difference that
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 5660dfc9ed36..73e385946855 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -298,6 +298,18 @@ $(foreach m, $1, \
$(addprefix $(obj)/, $(call suffix-search, $(patsubst $(obj)/%,%,$m), $2, $3))))
endef

+# Build commads
+# ===========================================================================
+# These are shared by some Makefile.* files.
+
+quiet_cmd_cc_o_c = CC $(quiet_modtag) $@
+ cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< \
+ $(cmd_ld_single_m) \
+ $(cmd_objtool)
+
+quiet_cmd_as_o_S = AS $(quiet_modtag) $@
+ cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool)
+
# Copy a file
# ===========================================================================
# 'cp' preserves permissions. If you use it to copy a file in read-only srctree,
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
index bab53884f7e3..d0153d033bbb 100644
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@@ -9,7 +9,7 @@ __modfinal:
include $(objtree)/include/config/auto.conf
include $(srctree)/scripts/Kbuild.include

-# for c_flags
+# include some build commands
include $(srctree)/scripts/Makefile.lib

# find all modules listed in modules.order
@@ -23,9 +23,7 @@ modname = $(notdir $(@:.mod.o=))
part-of-module = y
GCOV_PROFILE := n
KCSAN_SANITIZE := n
-
-quiet_cmd_cc_o_c = CC [M] $@
- cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI), $(c_flags)) -c -o $@ $<
+ccflags-remove-y := $(CC_FLAGS_CFI)

%.mod.o: %.mod.c FORCE
$(call if_changed_dep,cc_o_c)
diff --git a/scripts/Makefile.vmlinux b/scripts/Makefile.vmlinux
index 9ef0480ed755..1652561896eb 100644
--- a/scripts/Makefile.vmlinux
+++ b/scripts/Makefile.vmlinux
@@ -6,20 +6,14 @@ __default: vmlinux
include include/config/auto.conf
include $(srctree)/scripts/Kbuild.include

-# for c_flags
+# include some build commands
include $(srctree)/scripts/Makefile.lib

targets :=

-quiet_cmd_cc_o_c = CC $@
- cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
-
%.o: %.c FORCE
$(call if_changed_dep,cc_o_c)

-quiet_cmd_as_o_S = AS $@
- cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
-
%.o: %.S FORCE
$(call if_changed_dep,as_o_S)

--
2.43.0