Commit 5cc124720461 ("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 ${output}.map
because a later commit will introduce vmlinux.unstripped but I want to
keep the name of the map file.
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---
scripts/link-vmlinux.sh | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index e55026128e05..7cbbfa3efbca 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -98,8 +98,8 @@ vmlinux_link()
ldflags="${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 ${output} \
@@ -211,6 +211,7 @@ fi
btf_vmlinux_bin_o=
kallsymso=
strip_debug=
+generate_map=
if is_enabled CONFIG_KALLSYMS; then
true > .tmp_vmlinux0.syms
@@ -279,6 +280,10 @@ fi
strip_debug=
+if is_enabled CONFIG_VMLINUX_MAP; then
+ generate_map=1
+fi
+
vmlinux_link "${VMLINUX}"
# fill in BTF IDs
--
2.43.0
