Merge tag 'kbuild-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...

[linux-2.6-microblaze.git] / scripts / Makefile.lib

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index c57f14a..5458267 100644 (file)
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -225,17 +225,23 @@ dtc_cpp_flags  = -Wp,-MMD,$(depfile).pre.tmp -nostdinc                    \
                 $(addprefix -I,$(DTC_INCLUDE))                          \
                 -undef -D__DTS__
 
+ifeq ($(CONFIG_LTO_CLANG),y)
+# With CONFIG_LTO_CLANG, .o files in modules might be LLVM bitcode, so we
+# need to run LTO to compile them into native code (.lto.o) before further
+# processing.
+mod-prelink-ext := .lto
+endif
+
 # Objtool arguments are also needed for modfinal with LTO, so we define
 # then here to avoid duplication.
 objtool_args =                                                         \
        $(if $(CONFIG_UNWINDER_ORC),orc generate,check)                 \
-       $(if $(part-of-module), --module,)                              \
+       $(if $(part-of-module), --module)                               \
        $(if $(CONFIG_FRAME_POINTER),, --no-fp)                         \
-       $(if $(or $(CONFIG_GCOV_KERNEL),$(CONFIG_LTO_CLANG)),           \
-               --no-unreachable,)                                      \
-       $(if $(CONFIG_RETPOLINE), --retpoline,)                         \
-       $(if $(CONFIG_X86_SMAP), --uaccess,)                            \
-       $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount,)
+       $(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\
+       $(if $(CONFIG_RETPOLINE), --retpoline)                          \
+       $(if $(CONFIG_X86_SMAP), --uaccess)                             \
+       $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount)
 
 # Useful for describing the dependency of composite objects
 # Usage: