Changeset ea562ee9 in rtems for c/src/lib/configure.in


Ignore:
Timestamp:
Aug 12, 1999, 6:22:17 PM (21 years ago)
Author:
Joel Sherrill <joel.sherrill@…>
Branches:
4.10, 4.11, 4.8, 4.9, 5, master
Children:
6fc973e
Parents:
8aefe83
Message:

Patch from Ralf Corsepius <corsepiu@…>:

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

File:
1 edited

Legend:

Unmodified
Added
Removed
  • c/src/lib/configure.in

    r8aefe83 rea562ee9  
    4444RTEMS_I386_GAS_CODE16
    4545AM_CONDITIONAL(RTEMS_GAS_CODE16,test "$RTEMS_GAS_CODE16" = "yes");
    46 
    47 RTEMS_CHECK_SYSV_UNIX
    4846
    4947# find all the Makefiles for the BSPs
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