[PATCH v4 7/7] kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS

If CONFIG_TRIM_UNUSED_KSYMS is enabled and the kernel is built from a pristine state, the vmlinux is linked twice. [1] A user runs 'make' [2] First build with empty autoksyms.h [3] adjust_autoksyms.sh updates autoksyms.h and recurses 'make vmlinux' (begin sub-make) [4]

[PATCH v4 7/7] kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS

If CONFIG_TRIM_UNUSED_KSYMS is enabled and the kernel is built from a pristine state, the vmlinux is linked twice. [1] A user runs 'make' [2] First build with empty autoksyms.h [3] adjust_autoksyms.sh updates autoksyms.h and recurses 'make vmlinux' (begin sub-make) [4]