install.texi (*-*-freebsd*): Update target information.

2009-09-22  Loren J. Rittle  <ljrittle@acm.org>

	* doc/install.texi (*-*-freebsd*): Update target information.

From-SVN: r152028

gcc/ChangeLog

@@ -7,6 +7,8 @@
 	* config/freebsd-spec.h: Conditionally define LINK_EH_SPEC
 	and USE_LD_AS_NEEDED.
 
+	* doc/install.texi (*-*-freebsd*): Update target information.
+
 2009-09-22  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/41395

gcc/doc/install.texi

@@ -3181,6 +3181,13 @@ Support for FreeBSD 1 was discontinued in GCC 3.2.  Support for
 FreeBSD 2 (and any mutant a.out variants of FreeBSD 3) was
 discontinued in GCC 4.0.
 
+In GCC 4.5, we enabled the use of dl_iterate_phdr inside boehm-gc on
+FreeBSD 7 or later.  In order to better match the configuration of the
+FreeBSD system compiler: We also enabled the check to see if libc
+provides SSP support (which it does on FreeBSD 7), the use of
+dl_iterate_phdr inside libgcc_s.so.1 (on FreeBSD 7 or later) and the
+use of __cxa_atexit by default (on FreeBSD 6 or later).
+
 We support FreeBSD using the ELF file format with DWARF 2 debugging
 for all CPU architectures.  You may use @option{-gstabs} instead of
 @option{-g}, if you really want the old debugging format.  There are