From: Isaac Dunham <idunham@lavabit.com>
To: musl@lists.openwall.com
Subject: shared musl with PCC as system compiler
Date: Sun, 14 Oct 2012 00:15:34 -0700 [thread overview]
Message-ID: <20121014001534.0ee7a5f0.idunham@lavabit.com> (raw)
This is mainly a mix of what I've worked out previously and what Rich and I worked out on IRC. I figured posting it on the list would help those who want to use pcc as compiler...
0. Get today's (Oct 13) git HEAD or later! Otherwise libc.so will be broken.
Get a fairly recent pcc from CVS (the last month should be good enough)
When compiling pcc-libs, use
make CFLAGS="-fPIC ${OPTFLAGS}"
(otherwise you get textrels in libc.so, which doesn't work)
1. Set LIBCC to -L$(dirname `pcc -print-file-name=libpcc.a`) -lpcc
#-lpccsoftfloat may be needed for some systems
2. Add
CFLAGS_ALL_SHARED += -D__PIC__=1
to config.mak (pcc doesn't define this with -fPIC at present, which is a bug)
3. Find the right -m* options:
ld -march=native
#look for the elf_* in the "Supported emulations" that matches your CPU
Change all occurences of -m* in config.mak to "-melf_<arch>"
(pcc doesn't parse -m*, which is at best an incompatible behavior)
4. Now you should be set to compile.
--
Isaac Dunham <idunham@lavabit.com>
next reply other threads:[~2012-10-14 7:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-14 7:15 Isaac Dunham [this message]
2012-10-14 13:38 ` Luca Barbato
2012-10-14 20:36 ` Isaac Dunham
2012-10-14 15:29 ` Rich Felker
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20121014001534.0ee7a5f0.idunham@lavabit.com \
--to=idunham@lavabit.com \
--cc=musl@lists.openwall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).