The bug is not reproducible, so it is likely a hardware or OS problem.
make[4]: *** [kbattleship.all_cpp.o] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
*
* ERROR: kde-base/kbattleship-3.5.8 failed.
* Call stack:
* ebuild.sh, line 1701: Called dyn_compile
* ebuild.sh, line 1039: Called qa_call 'src_compile'
* ebuild.sh, line 44: Called src_compile
* ebuild.sh, line 1383: Called kde-meta_src_compile
* kde-meta.eclass, line 380: Called kde_src_compile
* kde.eclass, line 174: Called kde_src_compile 'all'
* kde.eclass, line 344: Called kde_src_compile 'myconf' 'configure' 'make'
* kde.eclass, line 340: Called die
* The specific snippet of code:
* emake || die "died running emake, $FUNCNAME:make"
* The die message:
* died running emake, kde_src_compile:make
*
* If you need support, post the topmost build error, and the call stack if relevant.
* A complete build log is located at '/var/tmp/portage/kde-base/kbattleship-3.5.8/temp/build.log'.
*