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rtems-rc-19990326-2.diff: Enhancements to autoconf support for librdbg
* autoconf-checks for AWK and RPCGEN
* disable librdbg if either AWK, RPCGEN or librdbg/$target_cpu
cannot be found
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With my most recent automake patch (automake II) we could even simplify more
files below make/, because the host-compiler related parts of those files
aren't used anymore :-.
Whatsoever, the patch below should fix this problem.
Note: This is a mere bug fix, it doesn't move any of the variables involved
to target.cfg nor does it try to eliminate any variable.
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description follows:
Description:
* automake for *all* tool subdirectories (Makefile.am, configure.in etc.)
* autogen now also considers CONFIG_HEADER (generates stamp-h.ins and
config.h.ins)
* c/src/tests/tools/generic/difftest and
c/src/tests/tools/generic/sorttimes generated by configure scripts
* c/update-tools/ampolish, beautifier for Makefile.ams, similar to
acpolish
* rtems-polish.sh added to c/update-tools/ + ampolish support
* New subdirectory ./automake, contains automake -Makefile fragments to
support RTEMS make "debug, debug_install, profile, profile_install" for
native Makefile.ams (== ignore these make targets).
* aclocal/rtems-top.m4's RTEMS_TOP now reads the automake makefile
variable VERSION from RTEMS ./VERSION file.
* ./configure.in uses the macros from aclocal + support for the tools'
configure scripts
Remarks:
* To run rtems-polish.sh, "cd <rtems-source-tree>;
./c/update-tools/rtems-polish.sh"
* AFAIS, now all native subdirectories are converted to automake (Please
drop me a note, if I forgot something).
* Unless you notice something fatal, IMO the time has come for a public
try (== snapshot). I do not intend to send more automake related patches
within, say 2 weeks, to give these patches time to settle and to give me
some time to think on how to continue.
* The patch assumes installation to the new main installation directory
[$(prefix)].
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This is the first real automake patch.
It adds automake support to c/build-tools and cleans up a few minor
issues.
I consider this to be a testing probe to examine problems with automake.
Therefore, this patch is just a more or less harmless replacement of the
former RTEMS Makefiles and I expect it not last for long. If you want to
give automake Makefiles a public try and if you want/need to learn about
problems with it, then it's about time for a new snapshot, IMO. I may
have screwed up something not directly related to automake, but I expect
very few (none to be precise) problems with automake. However, somebody
should at least try building on Cygwin. If you feel a bit more
adventureous, then I also can continue to submit more patches.
[FYI: I still have a couple of automake files laying around, but they
need some cleanup before being submitted as patches. Now, that I am just
into it, I'll perhaps submit another one tonight :-]
After applying this patch (patch -p1 -E <
<path-to>/rtems-rc-19990318-0), first run the "autogen" script from the
toplevel source directory, before committing to CVS. Be careful about
dependencies between Makefile.am and Makefile.ins when cutting tarballs
from CVS. Makefile.ins are required to be newer than Makefile.ams,
otherwise users would need to have automake, autoconf and perl. Some
people recommend to "touch" all Makefile.in after checkout from cvs (cf.
egcs/contrib/egcs_update).
ATTENTION:
* This patch adds a number of new files.
* remove aclocal/exeext.m4 and aclocal/cygwin.m4 from CVS, They are now
covered by autoconf-2.13`s AC_EXEEXT.
Some features/side-effects which are probably interesting for you:
In a configured build-tree "cd c/build-tools", then try
* "make RTEMS_BSP=<bsp> install"
* "make RTEMS_BSP=<bsp> dist"
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This patch is the most scary of all proposals I've been mailing to you
this week until now.
It consists of 3 parts:
1. a patch
2. a perl script (acpolish)
3. a shell script wrapper to invoke the perl-script.
The perl-script reads in each Makefile.in and modifies them
("polishes/beautifies" them :-).
These modifications are not easy to describe:
Basically, it hard-codes some automake Makefile-variables and rules into
RTEMS autoconf-Makefile.ins (Note: autoconf vs. automake!!) and converts
some settings/variables to configure scripts' requirements (Yes,
plural).
E.g. it adds the automake standard variables $top_builddir and $subdir,
adds dependency rules for automatic re-generation of Makefiles from
Makefile.in, adds support variables for relative paths to multiple
configure scripts etc.
The patch is a one-line patch to enable the support of the new features
added by acpolish.
The shell script is a wrapper which pokes around inside of the source
tree for Makefile.ins and invokes acpolish on all autoconf-Makefile.ins.
acpolish is designed to be able to run several times on the same
Makefile.in and may once become a more general tool to convert RTEMS
Makefile.in to automake. Therefore, I'd like to keep it inside of source
tree. (e.g. as contrib/acpolish or c/update-tools/acpolish). However, it
doesn't make sense to export it outside of RTEMS.
To apply this:
cd <source-tree>
patch -p1 -E < <path-to-patch>/rtems-rc-19990318-1.diff
tar xzvf <path-to>/rtems-rc-polish.tar.gz
./rtems-polish.sh
./autogen
Note: The path contrib/acpolish is hard-coded into rtems-polish.sh, if
you decide to put it in an alternative place, please modify
rtems-polish.sh to reflect this change.
Later:
cvs rm make/rtems.cfg (It isn't used anymore)
cvs add contrib
cvs add contrib/acpolish
cvs commit
I've tested this intensively, but naturally I can't exclude bugs.
Ralf.
PS.: Most probably, this is the last "Towards automake" patch. The next
one probably will be a real automake patch.
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<ccj@acm.org>.
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--enable-tests flag.
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> 4) rtems-rc-19990202-0.diff /reorg-score-cpu.sh
>
> reorg-score-cpu.sh reorganizes the cpu/<cpu>/* subdirectories in a
> similar manner than previous reorg scripts did. rtems-rc-19990202-0.diff
> contains the diffs after reorg-score-cpu.sh has been run on a
> rtems-19981215 snapshot + my patches up to rtems-rc-19990131-2.diff.
>
> This patch is rather nasty and may break something. However, I've tested
> it for about 10 different target/bsp pairs and believe to have shaken
> out most bugs.
I wonder about the following .h files that were not moved:
a29k/asm.h
a29k/cpu_asm.h
i386/asm.h
i960/asm.h
m68k/asm.h
m68k/m68302.h
m68k/m68360.h
m68k/qsm.h
m68k/sim.h
mips64orion/asm.h
mips64orion/cpu_asm.h
mips64orion/mips64orion.h
no_cpu/asm.h
no_cpu/cpu_asm.h
powerpc/asm.h
powerpc/mpc860.h
sh/asm.h
sparc/asm.h
sparc/erc32.h
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automake:
Notes:
* I didn't yet touch the cpu subdirectory. I still need some time to
think on how to handle them.
* I probably will wait for the next snapshot before mailing more patches
(I still have some pending), giving you a chance to apply them and me a
chance to become target of the bullets which will probably be aimed at
me after these modifications.
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all conflicts.
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and RPC support to RTEMS. Thanks. :) Email follows:
Hello,
For Xmas, here is the Remote Debugger on RTEMS !
Here are 2 patches for the Remote Debugger on RTEMS for pc386 from Linux
host :
- one for RTEMS it self,
- one for GDB-4.17.
1/ RTEMS patch
--------------
This patch adds 2 libraries :
- a simplified SUN RPC library
- the Remote Debugger library
The configuration command is the following :
../rtems4/configure --target=i386-rtemself --enable-rtemsbsp=pc386
--enable-rdbg
The SUN RPC library is built only if networking is set.
The RDBG library is built if networking and enable-rdbg are set.
The function used to initialize the debugger is :
rtems_rdbg_initialize ();
A special function has been created to force a task to be
in a "debug" state : enterRdbg().
The use of this function is not mandatory.
2/ GDB-4.17 patch
-----------------
This patch create a new RTEMS target for GDB-4.17.
The configuration command is the following :
./configure --enable-shared --target=i386RTEMS
To connect to a target, use :
target rtems [your_site_address]
Then, attach the target using : attach 1
And... Debug ;)
You can obtain the original GDB-4.17 on
ftp://ftp.debian.org/debian/dists/stable/main/source/devel/gdb_4.17.orig.tar.gz
This has been tested from a Debian 2.0.1 linux host.
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it work.
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Here is a cosmetic patch which corrects a few spelling problems in parts
written by me.
Apparently, I must have written these under the influence of ether (:-)
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with libchip.
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1. Rtems contains some perl scripts that use hard-coded paths to
/usr/bin/perl or /usr/local/bin/perl I have already fixed these
problems by adding some checks to configure.in. While doing this,
I also cleaned up some more autoconf related problems for generating
shell scripts. This patch might seem a bit scary to you, but I am
quite confident it won't break something (I've been testing it for
almost a week now, however it might introduce typos for a limited
number configurations I don't have access to - But it shouldn't be
a problem for you to test them :-).
I expect to get this finished tonight, hence you will very likely
have the patch when you get up tomorrow.
Changes:
* Check for PERL and disable all PERL scripts if perl wasn't found.
* Generate all KSHELL-scripts with autoconf instead of make-script
* Automatic dependency handling for autoconf generated KSHELL or PERL
scripts (make/rtems.cfg)
Notes:
* this patch contains new files and deletes some other files.
* The patch is relative to rtems-4.0.0-beta4 with my previous
rtems-rc-981014-1.diff patch applied.
Testing:
I tested it with sh-rtems and posix under linux. Now all targets
which are touched by this patch and which are not used while building
for sh-rtems and posix still need to be tested. AFAIS, only the
sparc/erc32 BSP should be affected by this criterion. And if you
like to, you should also consider testing it on a Cygwin32 and a
Solaris host for one arbitrary BSP.
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2. "make profile" doesn't work. It aborts when building host-tools
for embedded targets. I didn't yet have enough time to fix this
problem. AFAIS this problem is related to handling of
LDFLAGS_PROFILE[|_V] in gcc.cfg.in. For host applications, we use
gcc for linking host applications, too. With profiling enabled
CFLAGS_PROFILE_V contains -pg and is used to compile, but
LDFLAGS_PROFILE_V is empty, hence -pg will not be passed to the
linker causing gcc to fail to link, because it can't resolve some
symbols introduced by compiling with -pg.
I am not sure if I can provide a patch for this - Ether it is trivial
to fix or requires basic work on host configuration ;-
Fixing this one was trivial - But hard to trace.
LDFLAGS_PROFILE_V needs to contain the same flags as CFLAGS_PROFILE_V,
if gcc is used for linking (What else should have been expected ?,
:-). The same problem was present for *_DEBUG_V, but apparently wasn't
noticed by anybody, because things didn't break, but were silently
ignored.
I fixed these problems by setting these flags in configure.in whenever
gcc is reported to be the host-compiler. For non-gcc host compilers
"make debug" and "make profile" now becomes the same as an ordinary
"make". This is a hack and addressing this problen could be more
sophisticated, but I don't think it gives much sense to support
compile variants for any host program (Who will ever try to
profile/debug host tools?). Therefore I don't think it's useful
to invest more effort into this problem.
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test were suggested by Ian Taylor <ian@airs.com> and Joel did the
hard part of putting it in aclocal and editting all the offending
Makefiles and source code which could use this feature.
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Here is another patch to hopefully enhance rtems' configuration.
Motivation: Try to support other c-compilers besides gcc (I tried to
build rtems under Solaris using sun's WSPro c-compiler).
Here is a couple of small patches concerning the host compiler
configuration, which fix/work-around the worst problems when using sun's
WSPro c-compiler.
Changes:
* Replaced make/compilers/gcc.cfg with make/compilers/gcc.cfg.in, ie.
gcc.cfg is generated by configure now.
* Removed a line containing a hard-coded "gcc" from gcc.cfg (BUG-fix).
* Add -g to host compiler flags only if configure reported -g to work
* Add -Wall to host compiler flags only if configure reported that the
host compiler is gcc (WSPro's cc chokes on -Wall).
* Some modifications to make/Makefile.in
* Adapted make/custom/default.cfg to the new location of gcc.cfg
BTW, gcc.cfg/gcc.cfg.in seems to be full of unused code (DEBUG-VARIANTS
etc.) which deserves to be cleaned up, IMO.
IMO, a similar patch should be applied to gcc-target-default.cfg
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when the bare bsp was enabled without setting both --enable-cpu-model
and --enable-cpu-cflags.
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Here is a enhanced version of my previous patch. This patch enables
to potentially share the new interrupt management code for all Intel targets
(pc386, go32 and force386) bsp.
Note : this patch is complete only for pc386. It still needs to
be completed for go32 and force386. I carrefully checked
that anything needed is in for force386 (only some function
name changes for IDT manipulation and GDT segment
manipulation). But anyway I will not be able to test any
of theses targets...
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<corsepiu@faw.uni-ulm.de> which attempts to detect when the UNIX port
is being configured on a system without System V IPC support. This
is an optional component on both FreeBSD and Linux systems. Most
Linux 2.x kernels ship with it enabled but it is still a real risk.
This test may have undesirable side-effects on some hosts. We will
address those conflicts as they arise.
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* Added support for bsd "install" ($(BSDINSTALL)) to host.cfg.in, i.e.
the standard "install" program that most packages (including automake)
use. In Makefiles outside of rtems, "install" normally is referenced by
$(INSTALL), but rtems already uses $(INSTALL) for install-if-change,
hence I used $(BSDINSTALL) instead to keep up backward compatibility.
* Removed references to @GREP@ etc. from host.cfg.in, as configure.in
doesn't check for them (Minor cleanup).
* Added installation flags INST*FLAGS to host.cfg.in, which should
replace -m XXXX flags for installation calls.
*Changes to gcc.cfg to enable it to build host programs from multiple
sources files.
Should not disturb existing sources, but neccessary.
* There was a not-so-minor bug in the configuration files: "make
install" and "make debug_install" don't work in all subdirectories!! I
tried to fix this by adding "install" to MTARGETS in main.cfg, which
seems to solve most of the problems. But there still seem to be rare (?)
cases where "make debug_install" still seems to have problems.
* Changes to many host related tool-Makefiles to demonstrate the
abilities of INST*FLAGS, BSDINSTALL and the new rules in gcc.cfg.
..of cause ... but BSDINSTALL is THE standard method to install files
in most program packages besides rtems. This part of the patch fixes
some minor protection setting problems, but doesn't support
TARGET_VARIANTS
NOTE:
I hope you will like the BSDINSTALL, INST*FLAGS stuff. It is a step to
get rid of "install-if-change" and to rely on a more standard
installation procedure. If you don't like BSDINSTALL, removing it from
the patch isn't difficult- just grep for BSDINSTALL and replace
BSDINSTALL with INSTALL or MKDIR.
FINALLY:
I still have another patch pending (well, not a complete patch yet, it's
a partial patch to demonstrate the principle), which adds automatic
rebuilding of files generated by autoconf/configure. At the moment I
don't dare to submit it, because integrating this patch would require to
modify all Makefile.ins because we'd need to add a new "include " line
to each Makefile.in.
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made no attempt to divide the comments up and place them with just
the appropriate files. Here is an excerpt from Ralf's email:
Changes including comments on changes I made after cycling through
all the targets:
* Added ranlib support. Now all targets use "ranlib" instead of "ar -s"
to build an index for a library. If ranlib isn't detected during
configuration, check if ar -s is working and try "ar -s" instead of
* Removed $(XXX_FOR_TARGET) from make/target.cfg.in, use $(XXX) instead now.
* gcc-target-default.cfg: LINK_XXXX-defines reworked to solve the -l
problem under posix (cf gcc-target-default.cfg)
* rtems-glom replaced by Makefile-rules inside of the wrapup/Makefile.in
that has been using rtems-glom until now.
* Removed CCC and friends in gcc-target-default.cfg, as they have been
breaking CXX support.
* Removed CONFIG.$(TARGET_ARCH).CC lines from several custom/*.cfg
files, because this is now set in custom/default.cfg.
* Added aclocal/ar-s.m4, check whether "ar -s" is working
* Added aclocal/cygwin.m4 and aclocal/exeext.m4.
* Reworked aclocal/canonicalize-tools.m4: Added ar -s check; fixes for
problems when XXX_FOR_TARGET is given via environment variables (didn't
work for gcc until now), adding cygwin check, improved autoconf-cache
handling.
* Removed -l from make rule dependencies. LINK_LIBS is now allowed to
contain -L and -l. LINK_OBJS and LINK_FILES must not contain -L or -l.
gcc28 make-exe rules now link using $(LINK_OBJS) $(LINK_LIBS) => Almost
all custom/*.cfg are modified. This is very likely to break something
because of typos or having missed to edit a file.
Open problems, known bugs, things I didn't do:
* custom/p4000.cfg seems to be out of date and requires to be reviewed.
(JRS NOTE: It is subordinate p4650 and p4600 -- both of which build ok
after minor changes.)
* custom/psim.cfg needs to be reviewed, I added some changes to it, I am
insecure about.
(JRS NOTE: psim had a minor problem endif/endef swapped but runs fine.)
* rtems-glom.in can now be removed.
* gcc*.cfg files "make depend" rules don't honor language specific flags
(e.g CXXFLAGS is ignored for *.cc) - Nothing to worry about now, but may
cause problems for hosts/targets not using gcc or rtems-add-ons that use
external packages.
* AFAIS, the no_bsp BSP can't be build anymore, i.e. configure refused
to configure for it whatever I tried.
* The toplevel and toplevel+1 README files are quite out-dated
* cygwin.m4 isn't of much use for rtems. In most cases (cf.
aclocal/*.m4) it is worked around by directly using $host_os. I think
I'll remove it soon after the next snapshot
* Before release the cygwin patch needs to be tested under cygwin. I may
have broken/missed something (esp. the sed-pattern to convert \\ into /
may be broken).
* You should try to build/run the posix-BSP under solaris - I don't
expect problems, but I am not 100% sure, esp. with regard to ranlib/ar -s.
* You should consider to convert all make/compilers/*.cfg files into
make/compilers/*.cfg.in files and let autoconf generate the *.cfg. This
may help getting rid of some if/then/else statements and help
hard-coding some defines into those files in future and shouldn't
disturb now.
* Not having installed libc.a/libm.a on a host may still break building
rtems, esp. when using -disable-gcc28 as the gcc27-configuration scheme
directly accesses libc.a and libm.a. The problem should not appear when
using gcc28 because it references libc/libm only through -lc and -lm
which may be static or dynamic (I didn't test this).
* shgen is not yet included (I didn't yet have enough time to integrate it).
* I know about a few more configure-probs (esp. cross-checking
--enable-* flags).
+ warn/refuse to configure when --enable-libcdir and
--enable-gcc28 are given.
+ force --enable-libcdir when --disable-gcc28 is given
* Replaced KSHELL with @KSH@ in some shell scripts generated by configure.in.
* Added a dependency to aclocal/*.m4 in the toplevel Makefile => configure
and aclocal.m4 will now be rebuild when any aclocal/*.m4 file is changed
* Some changes to aclocal/gcc-pipe.m4 and aclocal/gcc-specs.m4
* Replaced i[[3456]]86-unknown-freebsd2.[[12]] with i[[3456]]86-*freebsd2.*
in configure.in, as I suppose there might exist a variety of valid vendors
(2nd field of the name-tripple)
* Disabled override MAKEFLAGS in toplevel Makefile.in - Potential
side-effects are not really clear to me.
* In mvme162.cfg, $(LINK_LIBS) is missing in the CC line in gcc28's make-exe
rule (yet another one I missed to edit). Just append $(LINK_LIBS) to
the "CC" line, like I hopefully did to ALL other custom/*.cfg files.
* the problem with mvme162lx.cfg is a follow-up problem of the
mvme162.cfg-bug.
* mvme162/console and idp/console had variables named Buffer which
conflicted with similarly named variables in some tests.
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a BSP source directory was present to eliminate a chunk of redundant code.
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Bare BSP is now only enabled when explicitly specified.
Bare BSP options and variables are clearly named so as to be obviously
BSP specific. This should avoid conflicts.
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The breakdown:
* CC_FOR_TARGET and CXX_FOR_TARGET were not correctly re-read
from autoconf's configuration cache (config.cache)
* If <target>-[gcc|g++] was not found while running configure,
the config macros tried to use other (wrong) compilers (e.g. cc).
Changes:
* New RTEMS_PROG_CC macro (aclocal/prog-cc.m4).
* New RTEMS_PROG_CXX macro (aclocal/prog-cxx.m4)
* Moved a shell script fragment from configure.in to a
new m4-autoconf macro (New file: aclocal/tool-prefix.m4)
* Minor changes to configure.in
I tested it with linux/posix (native gcc/primary libc) and
sh-rtems/gensh1 on a linux host and didn't notice any bugs
related to the problems mentioned above. There seem to be
more bugs with the posix bsp, but I consider them minor as
the build run completed successfully. It is just too late
for me to attempt to fix them now.
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support.
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gcc-target-default.cfg
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followed GNU conventions.
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specified. Otherwise a target specific runtest is not installed.
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"Ladies and Gentlement, we proudly present: a roughly hacked autoconf-ed
rtems-glom.in" (:-)
BTW, to follow up to the discussion about installation points, rtems-glom in
its current shape is an ideal example of a target dependent file. If
bsp-specific configure-scripts would exist, it might also be a bsp-dependent
file that contains RTEMS_BSP hard-coded (by configure) into it.
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Yep, I have a bunch of bug-fixes and additions pending (Yet another monster
patch, ... I can hear you scream :-).
1) configure.in : one AC_CONFIG_HEADER(...) line too much.
5) configure.in: --enable-cpp should probably be renamed to --enable-cxx, as
gnu-programs use "cxx" to specify C++ specific configure options, while cpp
is used for the preprocessor (e.g egcs uses --with-cxx-includedir, autoconf
internally uses $CXX),
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I am not sure if this is related to this problem, but here is an observation:
All config.sub scripts from rtems' intrastructure packages internally
transform i386-rtems into i386-pc-rtems
newlib-1.8.0-rtems/config.sub i386-rtems --> i386-pc-rtems
egcs-1.0/config.sub i386-rtems ---> i386-pc-rtems
egcs-1.0.1/config.sub i386-rtems ---> i386-pc-rtems
bintutils-2.8.1.0.19/config.sub i386-rtems ---> i386-pc-rtems
gas-98xxxx/config.sub i386-rtems ---> i386-pc-rtems
The only exception is rtems itself:
rtems/config.sub i386-rtems ---> i386-rtems
I am not sure if this influences i386-rtems + c++/posix, but this indicates
that rtems' config.sub script should to be updated.
To fix this, simply copying config.sub e.g. from egcs and removing all
i[3456]-rtems* case statement lines from configure.in should be sufficient.
BTW, from autoconf's point of view i386-pc-rtems is the correct target
conforming autoconf's naming conventions, but using i386-rtems for all
packages (infrastructure and rtems) should make no difference.
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