Commit ba4d7050 authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

kbuild: do not generate .tmp_vmlinux*.map when CONFIG_VMLINUX_MAP=y 



Commit 5cc12472 ("kbuild: add CONFIG_VMLINUX_MAP expert option")
mentioned that "the .map file can be rather large (several MB), and
that's a waste of space when one isn't interested in these things."

If that is the case, generating map files for the intermediate
tmp_vmlinux* files is also a waste of space. It is unlikely that
anyone would be interested in the .tmp_vmlinux*.map files.

This commit stops passing the -Map= option when linking the .tmp_vmlinux*
intermediates.

I also hard-coded the file name 'vmlinux.map' instead of ${output}.map
because a later commit will introduce vmlinux.unstripped but I want to
keep the current name of the map file.

Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
Acked-by: default avatarArd Biesheuvel <ardb@kernel.org>
parent 479fde49

scripts/link-vmlinux.sh

+7 −2
Original line number Diff line number Diff line
@@ -97,8 +97,8 @@ vmlinux_link() 
		ldflags="${ldflags} ${wl}--strip-debug"

	fi



	if is_enabled CONFIG_VMLINUX_MAP; then

		ldflags="${ldflags} ${wl}-Map=${output}.map"

	if [ -n "${generate_map}" ];  then

		ldflags="${ldflags} ${wl}-Map=vmlinux.map"

	fi



	${ld} ${ldflags} -o ${output}					\
@@ -210,6 +210,7 @@ fi 
btf_vmlinux_bin_o=

kallsymso=

strip_debug=

generate_map=



if is_enabled CONFIG_KALLSYMS; then

	true > .tmp_vmlinux0.syms
@@ -278,6 +279,10 @@ fi 


strip_debug=



if is_enabled CONFIG_VMLINUX_MAP; then

	generate_map=1

fi



vmlinux_link vmlinux



# fill in BTF IDs