编译有关jpeg库的时候总提示诸如fv1.elf2flt(.text+0x14c): In function `main':

xiaodaoren

fv1.elf2flt(.text+0x14c): In function `main':
: undefined reference to `jpeg_std_error'
fv1.elf2flt(.text+0x164): In function `main':
: undefined reference to `jpeg_CreateDecompress'
fv1.elf2flt(.text+0x174): In function `main':
: undefined reference to `jpeg_stdio_src'
fv1.elf2flt(.text+0x184): In function `main':
: undefined reference to `jpeg_read_header'
fv1.elf2flt(.text+0x190): In function `main':
: undefined reference to `jpeg_start_decompress'
fv1.elf2flt(.text+0x204): In function `main':
: undefined reference to `jpeg_read_scanlines'
fv1.elf2flt(.text+0x2fc): In function `main':
: undefined reference to `jpeg_finish_decompress'
fv1.elf2flt(.text+0x308): In function `main':
: undefined reference to `jpeg_destroy_decompress'
collect2: ld returned 1 exit status

xiaodaoren

在下刚开始弄这个，完全不明白提示这个的意思是什么。
用的是nios2-linux-uclibc-gcc，即便不用-elf2flt用-o也提示同样的问题。编译不通，这个的意思是什么？……麻烦诸位了。