我想在 ubuntu 11.10 服务器上编译 Gosmore。
我从以下位置获得源代码：
http://svn.openstreetmap.org/applications/rendering/gosmore/
当我尝试命令“make”命令时，出现如下错误：
gcc -lm density.c -o density
/tmp/ccNQSatu.o: In function `main':
density.c:(.text+0x21f): undefined reference to `exp'
density.c:(.text+0x224): undefined reference to `atan'
density.c:(.text+0x2c3): undefined reference to `exp'
density.c:(.text+0x2c8): undefined reference to `atan'
density.c:(.text+0x5d3): undefined reference to `exp'
density.c:(.text+0x5d8): undefined reference to `atan'
density.c:(.text+0x67a): undefined reference to `exp'
density.c:(.text+0x67f): undefined reference to `atan'
density.c:(.text+0x723): undefined reference to `exp'
density.c:(.text+0x728): undefined reference to `atan'
density.c:(.text+0x793): undefined reference to `exp'
density.c:(.text+0x798): undefined reference to `atan'
collect2: ld returned 1 exit status
make: *** [jni/bboxes.c] Error 1
如何解决这个问题？