On 09/04/2012 01:33 PM, Abdul Wahid Memon wrote: > I did the compilation with LD_DEBUG=symbols and got the following > output. I don't understand that why it is not looking for math > library. > > $ LD_DEBUG=symbols arm-none-linux-gnueabi-gcc > -fplugin=/home/abdul/plugin_v4.so hello.c -lm > -L/home/abdul/cross-tools/rootfs/arm-none-linux-gnueabi/libc/usr/lib/ > > symbol=pow; lookup in > file=/home/abdul/cross-tools/rootfs/bin/../libexec/gcc/arm-none-linux-gnueabi/4.6.2/cc1 > [0] > 30679: symbol=pow; lookup in > file=/home/abdul/cross-tools/rootfs/lib/libmpc.so.2 [0] > 30679: symbol=pow; lookup in > file=/home/abdul/cross-tools/rootfs/lib/libmpfr.so.1 [0] > 30679: symbol=pow; lookup in > file=/home/abdul/cross-tools/rootfs/lib/libgmp.so.3 [0] > 30679: symbol=pow; lookup in file=/usr/lib/libdl.so.2 [0] > 30679: symbol=pow; lookup in file=/usr/lib/libc.so.6 [0] > 30679: symbol=pow; lookup in file=/lib64/ld-linux-x86-64.so.2 [0] > 30679: symbol=pow; lookup in file=/home/abdul/plugin_v4.so [0] > 30679: symbol=pow; lookup in file=/usr/lib/libc.so.6 [0] > 30679: symbol=pow; lookup in file=/lib64/ld-linux-x86-64.so.2 [0] > 30679: /home/abdul/plugin_v4.so: error: symbol lookup error: > undefined symbol: pow (fatal) > > And for the plugin I got > > linux-vdso.so.1 (0x00007fffb3ba2000) > libc.so.6 => /usr/lib/libc.so.6 (0x00007f8e03274000) > /usr/lib/ld-linux-x86-64.so.2 (0x00007f8e03843000) > > Any further suggestions. I don't really understand what difficult you are having. Clearly something need to be linked with -lm. It's whatever object uses pow(). I don't know which object that is, because you haven't told me. It may be your plugin, in which case your plugin needs to be linked with -lm. This is just normal C programming, nothing to do with GCC. Andrew.
