forked from Imagelibrary/rtems
ea562ee977
After upgrading my linux box to the brand new SuSE 6.2 release, which is
glibc-2.1 based, I came across a bug in RTEMS - IIRC, I even warned you
about it about 1/2 a year ago, but nothing has been done since then :-.
The *.m4 macros to check for SYSV/IPC are broken for linux/glibc2.1,
because they assume that linux always defines union semun, which isn't
true anymore for glibc2.1 (the manpage for semctl states _X_OPEN
specifies it this way). Therefore I have tried to implement a more
general approach for handling SYSV for unix/posix which checks for
presence of struct semun, instead of trying to evaluate OS specific
preprocessor symbols.
This approach is a bit adventureous, because I only tested it with
linux/glibc2.1 and linux/libc5, but not under other Unix variants RTEMS
supports. I am quite confident it will work on other hosts, too, but who
knows :-.
[FYI: I think this might also is the cause of some problems with RedHat
6.X / Mandrake linux recently reported on the rtems list -- rtems-4.0.0
can not be build for posix on any glibc2.1 based host]
Furthermore the patch below contains a couple of minor fixes and
configuration cleanups, which IMO should be applied before releasing a
new snapshot.
To apply this patch:
cd <source-tree>
patch -p1 < rtems-rc-19990709-8.diff
./autogen
#
# $Id$
#
This is the top level of the RTEMS directory structure. The following
is a description of the files and directories in this directory:
Makefile.in
The top-level Make command file used to build the C implementation
of RTEMS. [RTEMS assumes the use of GNU make.]
README
This file.
REQUIRES
A list of the other tools which are assumed to be installed
before RTEMS is built.
SUPPORT
Information on third-party support for RTEMS.
build-tools
This directory contains the source for various utilities
needed to build RTEMS.
make
Make command files "included" from those in the source distribution.
[RTEMS assumes the use of GNU make.]
patches
This directory contains patches for this release of RTEMS.
src
This directory contains the source code for the C
implementation of RTEMS as well as the test suites, sample
applications, Board Support Packages, Device Drivers, and
support libraries.