static linked libgd

Hi,

i am new to GD and also to C. I am trying to write a small programm that 
manipulates an image by adding some text and some simple drawings. The 
programm will be used on several computers, so i try to link all the 
libs statically.

When i try to compile my test program with

gcc lines2jpg.c -lgd -ljpeg -static

the compiler says

#############
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `lsqrt':
(.text+0x319a): undefined reference to `sqrt'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageCopyRotated':
(.text+0x3207): undefined reference to `sqrt'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageCopyRotated':
(.text+0x322c): undefined reference to `cos'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageCopyRotated':
(.text+0x3240): undefined reference to `sin'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageDashedLine':
(.text+0x3f74): undefined reference to `atan2'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageDashedLine':
(.text+0x3f79): undefined reference to `sin'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageDashedLine':
(.text+0x4089): undefined reference to `atan2'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageDashedLine':
(.text+0x408e): undefined reference to `sin'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageLine':
(.text+0x46b6): undefined reference to `atan2'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageLine':
(.text+0x46bb): undefined reference to `cos'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageLine':
(.text+0x477b): undefined reference to `atan2'
/usr/lib64/gcc/x86_64-suse-linux/4.2.1/../../../../lib64/libgd.a(gd.o): 
In function `gdImageLine':
(.text+0x4780): undefined reference to `sin'
collect2: ld returned 1 exit status
####################

I also included <math.h> but the result is the same. Any help is apreciated!

Thanks, Yann