details. Tcl 8.6 has a known regression in RE pattern handling that
make parts of the testsuite fail. See
@uref{http://core.tcl.tk/tcl/tktview/267b7e2334ee2e9de34c4b00d6e72e2f1997085f}
-for more information.
+for more information. This bug has been fixed in 8.6.1.
@item autogen version 5.5.4 (or later) and
@itemx guile version 1.4.1 (or later)
Enable support for link-time optimization (LTO). This is enabled by
default, and may be disabled using @option{--disable-lto}.
+@item --enable-linker-plugin-configure-flags=FLAGS
+@itemx --enable-linker-plugin-flags=FLAGS
+By default, linker plugins (such as the LTO plugin) are built for the
+host system architecture. For the case that the linker has a
+different (but run-time compatible) architecture, these flags can be
+specified to build plugins that are compatible to the linker. For
+example, if you are building GCC for a 64-bit x86_64
+(@samp{x86_64-unknown-linux-gnu}) host system, but have a 32-bit x86
+GNU/Linux (@samp{i686-pc-linux-gnu}) linker executable (which is
+executable on the former system), you can configure GCC as follows for
+getting compatible linker plugins:
+
+@smallexample
+% @var{srcdir}/configure \
+ --host=x86_64-unknown-linux-gnu \
+ --enable-linker-plugin-configure-flags=--host=i686-pc-linux-gnu \
+ --enable-linker-plugin-flags='CC=gcc\ -m32\ -Wl,-rpath,[...]/i686-pc-linux-gnu/lib'
+@end smallexample
+
@item --with-plugin-ld=@var{pathname}
Enable an alternate linker to be used at link-time optimization (LTO)
link time when @option{-fuse-linker-plugin} is enabled.
Unlike standard bootstrap, several additional restrictions apply. The
compiler used to build @code{stage1} needs to support a 64-bit integral type.
-It is recommended to only use GCC for this. Also parallel make is currently
-not supported since collisions in profile collecting may occur.
+It is recommended to only use GCC for this.
@html
<hr />
@item
Solaris 2 (SPARC, Intel):
@itemize
-@item
-@uref{http://www.sunfreeware.com/,,Sunfreeware}
-
-@item
-@uref{http://www.blastwave.org/,,Blastwave}
-
@item
@uref{http://www.opencsw.org/,,OpenCSW}
@item
@uref{#ix86-x-linux,,i?86-*-linux*}
@item
-@uref{#ix86-x-solaris289,,i?86-*-solaris2.9}
-@item
@uref{#ix86-x-solaris210,,i?86-*-solaris2.10}
@item
@uref{#ia64-x-linux,,ia64-*-linux}
@item
@uref{#mips-sgi-irix6,,mips-sgi-irix6}
@item
+@uref{#nds32le-x-elf,,nds32le-*-elf}
+@item
+@uref{#nds32be-x-elf,,nds32be-*-elf}
+@item
@uref{#powerpc-x-x,,powerpc*-*-*}
@item
@uref{#powerpc-x-darwin,,powerpc-*-darwin*}
possible you have a hardware problem. Further information on this can be
found on @uref{http://www.bitwizard.nl/sig11/,,www.bitwizard.nl}.
-@html
-<hr />
-@end html
-@anchor{ix86-x-solaris29}
-@heading i?86-*-solaris2.9
-The Sun assembler in Solaris 9 has several bugs and limitations.
-While GCC works around them, several features are missing, so it is
-@c FIXME: which ones?
-recommended to use the GNU assembler instead. There is no bundled
-version, but the current version, from GNU binutils 2.22, is known to
-work.
-
-Solaris@tie{}2/x86 doesn't support the execution of SSE/SSE2 instructions
-before Solaris@tie{}9 4/04, even if the CPU supports them. Programs will
-receive @code{SIGILL} if they try. The fix is available both in
-Solaris@tie{}9 Update@tie{}6 and kernel patch 112234-12 or newer. To
-avoid this problem,
-@option{-march} defaults to @samp{pentiumpro} on Solaris 9. If
-you have the patch installed, you can configure GCC with an appropriate
-@option{--with-arch} option, but need GNU @command{as} for SSE2 support.
-
@html
<hr />
@end html
@end html
@anchor{aarch64-x-x}
@heading aarch64*-*-*
-Pre 2.24 binutils does not have support for selecting -mabi and does not
-support ILP32. If GCC 4.9 or later is built with pre 2.24, GCC will not
-support option -mabi=ilp32.
+Binutils pre 2.24 does not have support for selecting @option{-mabi} and
+does not support ILP32. If it is used to build GCC 4.9 or later, GCC will
+not support option @option{-mabi=ilp32}.
@html
<hr />
TI MSP430 processor.
This configuration is intended for embedded systems.
+@html
+<hr />
+@end html
+@anchor{nds32le-x-elf}
+@heading nds32le-*-elf
+Andes NDS32 target in little endian mode.
+
+@html
+<hr />
+@end html
+@anchor{nds32be-x-elf}
+@heading nds32be-*-elf
+Andes NDS32 target in big endian mode.
+
@html
<hr />
@end html
@c alone is too unspecific and must be avoided.
@anchor{x-x-solaris2}
@heading *-*-solaris2*
-Support for Solaris 9 has been obsoleted in GCC 4.9, but can still be
-enabled by configuring with @option{--enable-obsolete}. Support will be
-removed in GCC 4.10. Support for Solaris 8 has removed in GCC 4.8.
-Support for Solaris 7 has been removed in GCC 4.6.
+Support for Solaris 9 has been removed in GCC 4.10. Support for Solaris
+8 has been removed in GCC 4.8. Support for Solaris 7 has been removed
+in GCC 4.6.
Sun does not ship a C compiler with Solaris 2 before Solaris 10, though
you can download the Sun Studio compilers for free. In Solaris 10 and
causes the @command{expect} program to miss anticipated output, extra
testsuite failures appear.
-There are patches for Solaris 9 (117171-11 or newer for
-SPARC, 117172-11 or newer for Intel) that address this problem.
-
-Thread-local storage (TLS) is supported in Solaris@tie{}9, but requires
-some patches. The @samp{libthread} patches provide the
-@code{__tls_get_addr} (SPARC, 64-bit x86) resp.@ @code{___tls_get_addr}
-(32-bit x86) functions. On Solaris@tie{}9, the necessary support
-on SPARC is present since FCS, while 114432-05 or newer is required on
-Intel. Additionally, on Solaris@tie{}9/x86, patch 113986-02 or newer is
-required for the Sun @command{ld} and runtime linker (@command{ld.so.1})
-support, while Solaris@tie{}9/SPARC works since FCS. The linker
-patches must be installed even if GNU @command{ld} is used. Sun
-@command{as} in Solaris@tie{}9 doesn't support the necessary
-relocations, so GNU @command{as} must be used. The @command{configure}
-script checks for those prerequisites and automatically enables TLS
-support if they are met. Although those minimal patch versions should
-work, it is recommended to use the latest patch versions which include
-additional bug fixes.
-
@html
<hr />
@end html
projects / thirdparty / gcc.git / blobdiff