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Hi: thanks for your help. 2009/9/20 Yann E. MORIN <yann.morin.1998@anciens.enib.fr>: > Loody, > All, > > On Sunday 20 September 2009 10:43:22 loody wrote: >> I attach my error at the end of letter. >> I did see libc.a in sysroot/usr/lib, but my ld complains he cannot find it. >> I also check the options I set in ld.pdf but it seems all fine. > > ld.pdf ? The document which describe the usage of ld. (included in binutils documents) I guess maybe the error comes from my wrong options. > >> mipsel-unknown-linux-uclibc-ld -T ./link.xn -o TestCode.elf -Map >> TestCode.map --oformat elf32-tradlittlemips ?reset.o cpufunc.o host.o >> Interrupt.o main.o memtst.o ntsys.o diskio.o FileSystem.o tff.o misc.o >> DMA.o GPIO.o SDMMC.o Storage.o ntuart.o uart.o -static -lc >> mipsel-unknown-linux-uclibc-ld: cannot find -lc >> make: *** [TestCode.elf] Error 1 > > Can you re-run with --verbose ? the result is below: ...... ...... attempt to open uart.o succeeded uart.o attempt to open /root/x-tools/mipsel-unknown-linux-uclibc/bin/../lib/libc.a failed why the mipsel-unknown-linux-uclibc-ld search this directory for libs? > > Was that line hand-written, or was it generated by an "upper-layer" tool > (such as gcc)? the line is made by Makefile, which is got as below: LD = $(TOOLCHAIN)ld LDLIBS = -static -lc LDFLAGS = -T $(LDSCRIPT) -o $(IMAGE_ELF) -Map $(IMAGE_MAP) --oformat $(OFORMAT) $(IMAGE_ELF) : $(OBJ) $(LDSCRIPT) $(LD) $(LDFLAGS) $(OBJ) $(LDLIBS) > >> # mipsel-unknown-linux-uclibc-gcc -v > > ld comes from binutils, not gcc, so gcc can't tell you how ld will find > it libraries. > Is the option, "--with-sysroot" used to tell toolchain where to get the libs and include files? I saw a lot of libs and include headers located at where "--with-sysroot" points to, so I think where is the place linker will find the libs it needs. appreciate your help, miloody -- For unsubscribe information see http://sourceware.org/lists.html#faq
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