build system: specify '-nostldlib' when linking to .o files
For certain cross build scenarios the LD variable is overridden
to use the gcc executive to ensure all the target tuning parameters
are used. In these cases, the executive errors out as shown below
but since this step is only linking to a .o file the standard libs
are not needed.
$ make LD=gcc applets/built-in.o
LD applets/built-in.o
/usr/bin/ld: cannot find -lgcc_s
/usr/bin/ld: cannot find -lgcc_s
collect2: ld returned 1 exit status
make[1]: *** [applets/built-in.o] Error 1
make: *** [applets_dir] Error 2
Signed-off-by: Drew Moseley <drew_moseley@mentor.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 5685b5b..5eac45f 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -255,8 +255,9 @@
ifdef builtin-target
quiet_cmd_link_o_target = LD $@
# If the list of objects to link is empty, just create an empty built-in.o
+# -nostdlib is added to make "make LD=gcc ..." work (some people use that)
cmd_link_o_target = $(if $(strip $(obj-y)),\
- $(LD) $(ld_flags) -r -o $@ $(filter $(obj-y), $^),\
+ $(LD) -nostdlib $(ld_flags) -r -o $@ $(filter $(obj-y), $^),\
rm -f $@; $(AR) rcs $@)
$(builtin-target): $(obj-y) FORCE