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On recent AIX it's necessary to configure gcc to use the native assembler (because the GNU assembler hasn't been updated to handle AIX 6+). This caused PG builds to fail with assembler syntax errors, because we'd try to compile s_lock.h's gcc asm fragment for PPC, and that assembly code relied on GNU-style local labels. We can't substitute normal labels because it would fail in any file containing more than one inlined use of tas(). Fortunately, that code is stable enough, and the PPC ISA is simple enough, that it doesn't seem like too much of a maintenance burden to just hand-code the branch offsets, removing the need for any labels. Note that the AIX assembler only accepts "$" for the location counter pseudo-symbol. The usual GNU convention is "."; but it appears that all versions of gas for PPC also accept "$", so in theory this patch will not break any other PPC platforms. This has been reported by a few people, but Steve Underwood gets the credit for being the first to pursue the problem far enough to understand why it was failing. Thanks also to Noah Misch for additional testing. |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.