@file{/usr/local}.
We @strong{highly} recommend against @var{dirname} being the same or a
-subdirectory of @var{objdir} or vice versa.
+subdirectory of @var{objdir} or vice versa. If specifying a directory
+beneath a user's home directory tree, some shells will not expand
+@var{dirname} correctly if it contains the @samp{~} metacharacter; use
+@env{$HOME} instead.
These additional options control where certain parts of the distribution
are installed. Normally you should not need to use these options.
compare your results with results from a similar configuration that have
been submitted to the
@uref{http://gcc.gnu.org/ml/gcc-testresults/,,gcc-testresults mailing list}.
+Some of these archived results are linked from the build status lists
+at @uref{http://gcc.gnu.org/buildstat.html}, although not everyone who
+reports a successful build runs the testsuites and submits the results.
This step is optional and may require you to download additional software,
but it can give you confidence in your new GCC installation or point out
problems before you install and start using your new GCC.
particular, @option{--enable-threads} is now configured by default.
However, as a general user, do not attempt to replace the system
compiler with this release. Known to bootstrap and check with good
-results on FreeBSD 3.0, 3.4, 4.0, 4.2, 4.3, 4.4, 4.5-STABLE and 5-CURRENT@.
+results on FreeBSD 4.8-STABLE and 5-CURRENT@. In the past, known to
+bootstrap and check with good results on FreeBSD 3.0, 3.4, 4.0, 4.2,
+4.3, 4.4, 4.5-STABLE@.
In principle, @option{--enable-threads} is now compatible with
@option{--enable-libgcj} on FreeBSD@. However, it has only been built
-and tested on @samp{i386-*-freebsd4.5} and @samp{alpha-*-freebsd5.0}.
+and tested on @samp{i386-*-freebsd[45]} and @samp{alpha-*-freebsd[45]}.
The static
library may be incorrectly built (symbols are missing at link time).
There is a rare timing-based startup hang (probably involves an
assumption about the thread library). Multi-threaded boehm-gc (required for
libjava) exposes severe threaded signal-handling bugs on FreeBSD before
-4.5-RELEASE. The alpha port may not fully bootstrap without some manual
-intervention: @command{gcjh} will crash with a floating-point exception while
-generating @file{java/lang/Double.h} (just copy the version built on
-@samp{i386-*-freebsd*} and rerun the top-level @command{gmake} with no
-arguments and it
-should properly complete the bootstrap). Other CPU architectures
+4.5-RELEASE@. Other CPU architectures
supported by FreeBSD will require additional configuration tuning in, at
the very least, both boehm-gc and libffi.
@heading @anchor{powerpc-*-darwin*}powerpc-*-darwin*
PowerPC running Darwin (Mac OS X kernel).
-GCC 3.0 does not support Darwin, but 3.1 and later releases will work.
-
Pre-installed versions of Mac OS X may not include any developer tools,
meaning that you will not be able to build GCC from source. Tool
binaries are available at
@uref{http://www.opensource.apple.com/projects/darwin/} (free
registration required).
-Versions of the assembler prior to ``cctools-364'' cannot handle the
-4-argument form of @code{rlwinm} and related mask-using instructions. Darwin
-1.3 (Mac OS X 10.0) uses cctools-353 for instance. To get cctools-364,
+If you're using Darwin 1.3 (Mac OS X 10.0) or earlier, you will need
+to upgrade the assembler to version ``cctools-364''. To get cctools-364,
check out @file{cctools} with tag @samp{Apple-364}, build it, and
install the assembler as @file{usr/bin/as}. See
@uref{http://www.opensource.apple.com/tools/cvs/docs.html} for details.
-Also, the default stack limit of 512K is too small, and a bootstrap will
-typically fail when self-compiling @file{expr.c}. Set the stack to 800K
-or more, for instance by doing @samp{limit stack 800}. It's also
-convenient to use the GNU preprocessor instead of Apple's during the
-first stage of bootstrapping; this is automatic when doing @samp{make
-bootstrap}, but to do it from the toplevel objdir you will need to say
-@samp{make CC='cc -no-cpp-precomp' bootstrap}.
-
-Note that the version of GCC shipped by Apple typically includes a
-number of extensions not available in a standard GCC release. These
-extensions are generally specific to Mac programming.
+The default stack limit of 512K is too small, which may cause compiles
+to fail with 'Bus error'. Set the stack larger, for instance
+by doing @samp{limit stack 800}. It's a good idea to use the GNU
+preprocessor instead of Apple's @file{cpp-precomp} during the first stage of
+bootstrapping; this is automatic when doing @samp{make bootstrap}, but
+to do it from the toplevel objdir you will need to say @samp{make
+CC='cc -no-cpp-precomp' bootstrap}.
+
+The version of GCC shipped by Apple typically includes a number of
+extensions not available in a standard GCC release. These extensions
+are generally specific to Mac programming.
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