Thanks for the info.
I haven't reported this yet as the version of Gimp I have is 2.8.6 which I compiled myself. The version that is installed with Mint 15 is 2.8.4 and can't be updated via synaptic, I guess the latest version of Gimp will be included with Mint 16.
Having said that 2.8.6 was added to synaptic's list when I compiled it so I'm not sure if it should work with the version of Gap that's in synaptic, but it doesn't.
So, I started to follow this thread
viewtopic.php?f=9&t=4532 Ran ./autogen.sh and everything appears fine, no mention of any missing files or the like, but when I run make I end up with this message
/usr/bin/ld: ../libgapbase/libgapbase.a(gap_base.o): undefined reference to symbol 'exp@@GLIBC_2.2.5'
/usr/bin/ld: note: 'exp@@GLIBC_2.2.5' is defined in DSO /lib/x86_64-linux-gnu/libm.so.6 so try adding it to the linker command line
/lib/x86_64-linux-gnu/libm.so.6: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make[2]: *** [gap_blend_fill] Error 1
make[2]: Leaving directory `/home/caz/Desktop/gimp-gap-master/gap'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/caz/Desktop/gimp-gap-master'
make: *** [all] Error 2
Looks to me like there's a problem with the linker command line, but I've spent hours looking around on-line for an answer and most of the threads I've come across talk about stuff that's way beyond my knowledge. So if anyone knows of a way to fix the linker command line that would be good.
I also tried changing the line in the makefile.in just to see if it would make any difference, but it didn't