linux makefile 问题请教：if语句问题

skywalker001

linux makefile 问题请教：if语句问题 [复制链接]

linux2.6.9内核的makefile中有一段如下语句：
prepare1: prepare2
ifneq ($(KBUILD_SRC),)
        @echo '  Using $(srctree) as source for kernel'
        $(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; then \
                echo "  $(srctree) is not clean, please run 'make mrproper'";\
                echo "  in the '$(srctree)' directory.";\
                /bin/false; \
        fi;
        $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
        $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
endif
请问其中的$(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; 是什么意思？其中 -h-o -f是和何作用？那里有相关的资料可以查看？
刚开始学LINUX，请各位高手多多指教。