Bugzilla Bug 165981

While I fully realise that the use of QMAIL_PATCH_DIR on netqmail isn't
officially supported, I'd like to suggest a change to the way the netqmail
ebuild handles conf-cc.

The cause of this problem is that some patches edit conf-cc to add new
requirements. For example, I'm using the popular jms1 combined patch
(http://qmail.jms1.net), that changes conf-cc to: 
cc -O2 -DTLS -DEXTERNAL_TODO -I/usr/local/ssl/include -I/usr/kerberos/include

This obviously causes problems when Gentoo's ebuild replaces the entire file:
echo -n "$(tc-getCC) ${CFLAGS}" > "${MY_S}/conf-cc"

I'd like to suggest that instead of replacing the entire file, the ebuild uses
a patch (or sed, or whatever's the best way) to replace just the standard 'cc
-O2' that the file contains by default.

I've not used sed before, but from looking at some documentation, something
like the following would appear to do the trick: sed 's/cc -O2/$(tc-getCC)
${CFLAGS}/' <${MY_S}/conf-cc >${MY_S}/conf-cc

My guess is that something similar could also be done with the conf-ld file to
also support a wider range of patches there.

There may be other alternatives which I've missed, which may solve the problem
better.

Fixed in -1.05-r5, can you please test it? Thanks.

This appears to be working for me. Thanks very much. =)