kbuild: rename LDFLAGS to KBUILD_LDFLAGS

Commit a0f97e06a43c ("kbuild: enable 'make CFLAGS=...' to add
additional options to CC") renamed CFLAGS to KBUILD_CFLAGS.

Commit 222d394d30e7 ("kbuild: enable 'make AFLAGS=...' to add
additional options to AS") renamed AFLAGS to KBUILD_AFLAGS.

Commit 06c5040cdb13 ("kbuild: enable 'make CPPFLAGS=...' to add
additional options to CPP") renamed CPPFLAGS to KBUILD_CPPFLAGS.

For some reason, LDFLAGS was not renamed.

Using a well-known variable like LDFLAGS may result in accidental
override of the variable.

Kbuild generally uses KBUILD_ prefixed variables for the internally
appended options, so here is one more conversion to sanitize the
naming convention.

I did not touch Makefiles under tools/ since the tools build system
is a different world.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>

5 files changed, 9 insertions, 9 deletions

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 7c98f60e2266..c75413d05a63 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -163,8 +163,8 @@ cc-ldoption = $(call try-run,\
         $(CC) $(1) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -nostdlib -x c /dev/null -o "$$TMP",$(1),$(2))
 
 # ld-option
-# Usage: LDFLAGS += $(call ld-option, -X, -Y)
-ld-option = $(call try-run, $(LD) $(LDFLAGS) $(1) -v,$(1),$(2),$(3))
+# Usage: KBUILD_LDFLAGS += $(call ld-option, -X, -Y)
+ld-option = $(call try-run, $(LD) $(KBUILD_LDFLAGS) $(1) -v,$(1),$(2),$(3))
 
 # ar-option
 # Usage: KBUILD_ARFLAGS := $(call ar-option,D)
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index f5d7612696d0..1c48572223d1 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -190,7 +190,7 @@ cmd_modversions_c =								\
                 $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes))  \
                     > $(@D)/.tmp_$(@F:.o=.ver);                                 \
                                                                                 \
-                $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F)                      \
+                $(LD) $(KBUILD_LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F)               \
                         -T $(@D)/.tmp_$(@F:.o=.ver);                            \
                 rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver);                \
         else                                                                    \
@@ -220,7 +220,7 @@ sub_cmd_record_mcount = set -e ; perl $(srctree)/scripts/recordmcount.pl "$(ARCH
         "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
         "$(if $(CONFIG_64BIT),64,32)" \
         "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \
-        "$(LD) $(LDFLAGS)" "$(NM)" "$(RM)" "$(MV)" \
+        "$(LD) $(KBUILD_LDFLAGS)" "$(NM)" "$(RM)" "$(MV)" \
         "$(if $(part-of-module),1,0)" "$(@)";
 recordmcount_source := $(srctree)/scripts/recordmcount.pl
 endif # BUILD_C_RECORDMCOUNT
@@ -394,7 +394,7 @@ cmd_modversions_S =								\
                 $(call cmd_gensymtypes_S,$(KBUILD_SYMTYPES),$(@:.o=.symtypes))  \
                     > $(@D)/.tmp_$(@F:.o=.ver);                                 \
                                                                                 \
-                $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F)                      \
+                $(LD) $(KBUILD_LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F)               \
                         -T $(@D)/.tmp_$(@F:.o=.ver);                            \
                 rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver);                \
         else                                                                    \
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index df0fff252619..61e596650ed3 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -162,7 +162,7 @@ a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
                  $(__cpp_flags)
 
-ld_flags       = $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
+ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
 
 DTC_INCLUDE    := $(srctree)/scripts/dtc/include-prefixes
 
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index dd92dbbbaa68..7d4af0d0accb 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -120,7 +120,7 @@ ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
 # Step 6), final link of the modules with optional arch pass after final link
 quiet_cmd_ld_ko_o = LD [M]  $@
       cmd_ld_ko_o =                                                     \
-        $(LD) -r $(LDFLAGS)                                             \
+        $(LD) -r $(KBUILD_LDFLAGS)                                      \
                  $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE)             \
                  -o $@ $(filter-out FORCE,$^) ;                         \
         $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 4bf811c09f59..c8cf45362bd6 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -75,7 +75,7 @@ modpost_link()
                 ${KBUILD_VMLINUX_LIBS}                          \
                 --end-group"
 
-        ${LD} ${LDFLAGS} -r -o ${1} ${objects}
+        ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${objects}
 }
 
 # Link of vmlinux
@@ -95,7 +95,7 @@ vmlinux_link()
                         --end-group                             \
                         ${1}"
 
-                ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2}     \
+                ${LD} ${KBUILD_LDFLAGS} ${LDFLAGS_vmlinux} -o ${2}      \
                         -T ${lds} ${objects}
         else
                 objects="-Wl,--whole-archive                    \