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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/doc/install.texi | 22 |
2 files changed, 22 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f0215aa52d7..1b73fc346c7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2009-06-16 David Edelsohn <edelsohn@gnu.org> + + * doc/install.texi (*-*-aix): Update explanation of XLC bootstrap. + GCC can bootstrap on AIX with GNU Binutils 2.20. + 2009-06-16 Ian Lance Taylor <iant@google.com> * Makefile.in (tree-vect-stmts.o): Depend upon $(TOPLEV_H). diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 0804ae3201f..3a0806d0008 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -3397,6 +3397,20 @@ Support for AIX version 4.2 and older was discontinued in GCC 4.5. process resource limits (ulimit). Hard limits are configured in the @file{/etc/security/limits} system configuration file. +GCC can bootstrap with recent versions of IBM XLC, but bootstrapping +with an earlier release of GCC is recommended. Bootstrapping with XLC +requires a larger data segment, which can be enabled through the +@var{LDR_CNTRL} environment variable, e.g., + +@smallexample + % LDR_CNTRL=MAXDATA=0x50000000 + % export LDR_CNTRL +@end smallexample + +One can start with a pre-compiled version of GCC to build from +sources. One may delete GCC's ``fixed'' header files when starting +with a version of GCC built for an earlier release of AIX. + To speed up the configuration phases of bootstrapping and installing GCC, one may use GNU Bash instead of AIX @command{/bin/sh}, e.g., @@ -3426,11 +3440,9 @@ If this error occurs during stage2 or later, then the problem most likely is the version of Make (see above). The native @command{as} and @command{ld} are recommended for bootstrapping -on AIX 4 and required for bootstrapping on AIX 5L@. The GNU Assembler -reports that it supports WEAK symbols on AIX 4, which causes GCC to try to -utilize weak symbol functionality although it is not supported. The GNU -Assembler and Linker do not support AIX 5L sufficiently to bootstrap GCC@. -The native AIX tools do interoperate with GCC@. +on AIX@. The GNU Assembler, GNU Linker, and GNU Binutils version 2.20 +is required to bootstrap on AIX 5@. The native AIX tools do +interoperate with GCC@. Building @file{libstdc++.a} requires a fix for an AIX Assembler bug APAR IY26685 (AIX 4.3) or APAR IY25528 (AIX 5.1). It also requires a |