Merge tag 'kbuild-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiro...

[linux-2.6-microblaze.git] / Makefile

diff --git a/Makefile b/Makefile
index c28c5d9..18ecb49 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -424,19 +424,26 @@ HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null)
 
 ifneq ($(LLVM),)
-HOSTCC = clang
-HOSTCXX        = clang++
+ifneq ($(filter %/,$(LLVM)),)
+LLVM_PREFIX := $(LLVM)
+else ifneq ($(filter -%,$(LLVM)),)
+LLVM_SUFFIX := $(LLVM)
+endif
+
+HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
+HOSTCXX        = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX)
 else
 HOSTCC = gcc
 HOSTCXX        = g++
 endif
 
-export KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
-                             -O2 -fomit-frame-pointer -std=gnu11 \
-                             -Wdeclaration-after-statement
-export KBUILD_USERLDFLAGS :=
+KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
+                        -O2 -fomit-frame-pointer -std=gnu11 \
+                        -Wdeclaration-after-statement
+KBUILD_USERCFLAGS  := $(KBUILD_USERHOSTCFLAGS) $(USERCFLAGS)
+KBUILD_USERLDFLAGS := $(USERLDFLAGS)
 
-KBUILD_HOSTCFLAGS   := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS)
+KBUILD_HOSTCFLAGS   := $(KBUILD_USERHOSTCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS)
 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS)
 KBUILD_HOSTLDFLAGS  := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS)
 KBUILD_HOSTLDLIBS   := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
@@ -444,14 +451,14 @@ KBUILD_HOSTLDLIBS   := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
 # Make variables (CC, etc...)
 CPP            = $(CC) -E
 ifneq ($(LLVM),)
-CC             = clang
-LD             = ld.lld
-AR             = llvm-ar
-NM             = llvm-nm
-OBJCOPY                = llvm-objcopy
-OBJDUMP                = llvm-objdump
-READELF                = llvm-readelf
-STRIP          = llvm-strip
+CC             = $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
+LD             = $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX)
+AR             = $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX)
+NM             = $(LLVM_PREFIX)llvm-nm$(LLVM_SUFFIX)
+OBJCOPY                = $(LLVM_PREFIX)llvm-objcopy$(LLVM_SUFFIX)
+OBJDUMP                = $(LLVM_PREFIX)llvm-objdump$(LLVM_SUFFIX)
+READELF                = $(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX)
+STRIP          = $(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX)
 else
 CC             = $(CROSS_COMPILE)gcc
 LD             = $(CROSS_COMPILE)ld
@@ -531,6 +538,7 @@ export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AW
 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD
 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
+export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS
 
 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
@@ -1237,8 +1245,8 @@ define filechk_version.h
        echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL)
 endef
 
-$(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0)
-$(version_h): SUBLEVEL := $(if $(SUBLEVEL), $(SUBLEVEL), 0)
+$(version_h): PATCHLEVEL := $(or $(PATCHLEVEL), 0)
+$(version_h): SUBLEVEL := $(or $(SUBLEVEL), 0)
 $(version_h): FORCE
        $(call filechk,version.h)
 
@@ -1621,7 +1629,7 @@ help:
        @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
        @echo  ''
        @echo  'Architecture specific targets ($(SRCARCH)):'
-       @$(if $(archhelp),$(archhelp),\
+       @$(or $(archhelp),\
                echo '  No architecture specific help defined for $(SRCARCH)')
        @echo  ''
        @$(if $(boards), \
@@ -1838,7 +1846,7 @@ $(clean-dirs):
 
 clean: $(clean-dirs)
        $(call cmd,rmfiles)
-       @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
+       @find $(or $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
                \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \
                -o -name '*.ko.*' \
                -o -name '*.dtb' -o -name '*.dtbo' -o -name '*.dtb.S' -o -name '*.dt.yaml' \