MinGW comple error

What does this compile error mean?

[exec] Executing 'gcc' with arguments:

[exec] '-mno-cygwin'

[exec] '-IC:\Program Files\Java\jdk1.5.0_11\include'

[exec] '-IC:\Program Files\Java\jdk1.5.0_11\include\win32'

[exec] '-Iinclude'

[exec] '-c'

[exec] 'source/jnewton_JNewtonWorld.c'

[exec] 'source/jnewton_JNewtonCollision.c'

[exec] 'source/jnewton_JNewtonBody.c'

[exec] '-o'

[exec] 'build/jnewton_JNewtonWorld.o'

[exec] 'build/jnewton_JNewtonCollision.o'

[exec] 'build/jnewton_JNewtonBody.o'

[exec]

[exec] The ' characters around the executable and arguments are

[exec] not part of the command.

[exec] In file included from C:/Program Files/Java/jdk1.5.0_11/include/jni.h:21,

[exec] from include/jnewton_JNewtonCollision.h:2,

[exec] from source/jnewton_JNewtonCollision.c:1:

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:219: error: redefinition of 'vsnprintf'

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:219: error: redefinition of 'vsnprintf'

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:279: error: redefinition of 'putchar'

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:279: error: redefinition of 'putchar'

[exec] In file included from C:/Program Files/Java/jdk1.5.0_11/include/jni.h:21,

[exec] from include/jnewton_JNewtonBody.h:2,

[exec] from source/jnewton_JNewtonBody.c:1:

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:219: error: redefinition of 'vsnprintf'

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:219: error: redefinition of 'vsnprintf'

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:279: error: redefinition of 'putchar'

[exec] I:/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/stdio.h:279: error: redefinition of 'putchar'

Jim

[2076 byte] By [jjones3566a] at [2007-11-26 20:21:23]