In makefile in doc/ there is a line which tells gzip to compress non-existent files (matching: gri.info-[0-9][0-9]). This causes the whole install to fail. I'm attaching a small patch to fix this issue.
Created attachment 20694 [details, diff] the patch
I can't reproduce your problem - please attach a complete log of the failing emerge.
This error is reproducible with texinfo-4.6, but not with texinfo-4.5 (in fact the patch won't have the desired effects with texinfo-4.5.) From the makeinfo-4.5 manpage: --split-size=NUM split Info files at size NUM (default 50000). From the makeinfo-4.6 manpage: --split-size=NUM split Info files at size NUM (default 300000). makeinfo will translate and split the gri.texi file, and it's the default size of the split files which causes our problems. makeinfo-4.5 splits the info file into 14 smaller files; makeinfo-4.6 splits the info file only into 3 smaller files. How about we patch the doc/Makefile to use the --split-size=50000 flag instead?
Replaced the -[0-9] -[0-9][0-9] stuff by -* - works fine for me with both texinfo versions.
