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Update to reflect currently reality.

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hp.com!davidm 2004-10-15 13:37:27 +00:00
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@ -8,13 +8,12 @@ information yet, so its utility is limited. Similarly, the HP-UX/IPF
support is incomplete, though it is sufficient to do a basic
backtrace. unw_resume() is not supported, however.
* Important GCC v3.4.0 Caveat
* Important GCC v3.4.[012] Caveat
GCC v3.4.0 breaks C++ ABI compatibility and because of that, libunwind
cannot easily be used as the unwinder for GCC v3.4.0. The GCC
developers are aware of the problem [1] and the expectation is that
the problem will be fixed with GCC v3.4.1. In the meantime, it may be
best to avoid using GCC v3.4.0.
GCC v3.4.[012] break C++ ABI compatibility and because of that,
libunwind cannot easily be used as the unwinder. The GCC developers
are aware of the problem [1] and the the problem has been fixed for
GCC v3.4.3.
[1] http://gcc.gnu.org/ml/gcc/2004-04/msg00989.html
@ -35,7 +34,16 @@ testing, you may want to use a prefix of /usr/local instead.
* Building with Intel compiler
** Up to version 7
** Version 8 and later
Starting with version 8, the preferred name for the IA-64 Intel
compiler is "icc" (same name as on x86). Thus, the configure-line
should look like this:
$ ./configure CC=icc CFLAGS="-g -O3 -ip" CXX=icc CCAS=gcc CCASFLAGS=-g \
LDFLAGS="-L$PWD/src/.libs"
** Version 7
To build libunwind with the Intel Electron compiler (ECC), it is
recommended to run configure like this:
@ -52,15 +60,6 @@ called "__dummy" in the declaration of "struct ia64_fpreg". Without
that member, variables of type unw_context_t won't be aligned
properly.
** Version 8 and later
Starting with version 8, the preferred name for the IA-64 Intel
compiler is "icc" (same name as on x86). Thus, the configure-line
should look like this:
$ ./configure CC=icc CFLAGS="-g -O3 -ip" CXX=icc CCAS=gcc CCASFLAGS=-g \
LDFLAGS="-L$PWD/src/.libs"
* Building on HP-UX
For the time being, libunwind must be built with GCC on HP-UX.
@ -105,6 +104,12 @@ or C libraries, it just means that for certain corner cases, unwinding
will fail. Since they're corner cases, it is not likely for
applications to trigger them.
Note: If you get lots of errors in Gia64-test-nat and Lia64-test-nat, it's
almost certainly a sign of an old assembler. The GNU assembler used
to encode previous-stack-pointer-relative offsets incorrectly.
This bug was fixed on 21-Sep-2004 so any later assembler will be
fine.
** Expected results on x86 Linux
The following tests are expected to fail on x86 Linux: