[Bug libgcj/37019] [4.2 Regression] Inconsistent gcc-4.2.3/libjava/configure uses "grep" and "egrep" and "grep -E" and "$EGGREP" but not ggrep -- sed also is trouble

["rob1weld at aol dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #5 from rob1weld at aol dot com  2008-08-05 02:42 -------
Andrew Pinski  2008-08-04 18:53 wrote:
> Not if they want to call their OS a POSIX or UNIX OS really.  POSIX actually
> makes a standard about programs too.

If you want Posix conformant commands (not necessarily GNU programs) then the
Docs are here:

C(5)
http://docs.sun.com/app/docs/doc/819-2252/6n4i8rtov?l=en&a=view


It might be easier (for gcc) if we used GNU programs but if you would prefer
Posix and other Standards (certified by various groups) then here are a few
quotes from that Doc.


Solaris 10 supports IEEE Std 1003.1 and IEEE Std 1003.2, commonly known as
POSIX.1 and POSIX.2, respectively.


POSIX Standard          Description                              Release
POSIX.1?2001            POSIX.1-1990, POSIX.1b-1993, POSIX.1c-1996,
POSIX.2-1992, and POSIX.2a-1992 updates        Solaris 10 


Solaris 10 also supports the X/Open Common Applications Environment (CAE)
Portability Guide Issue 3 (XPG3) and Issue 4 (XPG4); Single UNIX Specification
(SUS, also known as XPG4v2); Single UNIX Specification, Version 2 (SUSv2); and
Single UNIX Specification, Version 3 (SUSv3). Both XPG4 and SUS include
Networking Services Issue 4 (XNS4). SUSv2 includes Networking Services Issue 5
(XNS5).


Utilities

      If the behavior required by POSIX.2, POSIX.2a, XPG4, SUS, or SUSv2
conflicts with historical Solaris utility behavior, the original Solaris
version of the utility is unchanged; a new version that is standard-conforming
has been provided in /usr/xpg4/bin. If the behavior required by POSIX.1?2001 or
SUSv3 conflicts with historical Solaris utility behavior, a new version that is
standard-conforming has been provided in /usr/xpg4/bin or in /usr/xpg6/bin. If
the behavior required by POSIX.1?2001 or SUSv3 conflicts with POSIX.2,
POSIX.2a, SUS, or SUSv2, a new version that is SUSv3 standard-conforming has
been provided in /usr/xpg6/bin.


We will need to check the "/usr/xpg4/bin" and "/usr/xpg6/bin" directories also
if you desire to use a program that meets a specific standard.

Or ...

We could just use GNU programs and require that the version number be greater
than X and less than Y and that all scripts work within those versions. Newer
series of gcc could permit newer version of the said utility program and old
versions of gcc could have patch sets made to permit some flexibility on the
range of versions permitted. This way we won't paint (program) ourselves into a
corner.


To me it seems easier to require GNU programs to compile GNU programs. This is
why I like to see the old compilers (gcc-3.4.3) working so we can bootstrap up
to the newer compilers (4.2.x series).

But when I'm running Solaris (and not Linux) I can use the "/usr/xpg4/bin" and
"/usr/xpg6/bin" programs (and the wonders of ZFS) too.


-- 

rob1weld at aol dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |major


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37019