Libraries that link with U-Boot typically may expect to be able to include ctype.h but this file is in a different place in U-Boot. Add a symlink to make this work. Signed-off-by: Simon Glass <sjg at chromium.org> --- include/ctype.h | 1 + 1 file changed, 1 insertion(+) create mode 120000 include/ctype.h Applied to u-boot-dm, thanks!