Re: AIX support

Peter Eisentraut <peter@eisentraut.org>

From: Peter Eisentraut <peter@eisentraut.org>

To: Srirama Kucherlapati <sriram.rk@in.ibm.com>, Andres Freund <andres@anarazel.de>, AIX PG user <postgres-ibm-aix@wwpdl.vnet.ibm.com>

Cc: "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>

Date: 2025-11-07T16:28:13Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Restore AIX support.
- 4a1b05caa55d 19 (unreleased) landed
pg_createsubscriber: Improve error messages.
- 898c131b58a0 18.0 cited
Use <stdint.h> and <inttypes.h> for c.h integers.
- 962da900ac8f 18.0 cited
Stabilize jsonb_path_query test case.
- af2115226831 18.0 cited
Fix C23 compiler warning
- d2b4b4c2259e 18.0 cited
pg_stat_statements: Add tests for nested queries with level tracking
- 45e0ba30fc40 18.0 cited
Add missing newline at the end of index_including.sql
- 54b69f1bd730 17.0 cited
Remove AIX support
- 0b16bb8776bb 17.0 cited
Fix s_lock.h PPC assembly code to be compatible with native AIX assembler.
- c41a1215f049 9.6.0 cited
Use a non-locking initial test in TAS_SPIN on PPC.
- bc2a050d4097 9.2.0 cited
Use LWSYNC in place of SYNC/ISYNC in PPC spinlocks, where possible.
- 631beeac3598 9.2.0 cited
Use mutex hint bit in PPC LWARX instructions, where possible.
- 5cfa8dd3007d 9.2.0 cited
Adjust TAS assembly as per recent discussions: use "+m"(*lock) everywhere
- 109867748259 8.0.0 cited
Apple's assembler likes the inlined TAS syntax too, so no reason to
- f9ba0a7fe563 7.4.1 cited
Tighten up register usage for inline PPC version of tas().
- eb5e4c58d137 7.4.1 cited
Put the isync where it's supposed to be.
- cd35d601b859 7.4.1 cited
> > I'll re-check that with the ppc architecture guy here.
- ceb4f5ea9c2c 7.4.1 cited
Fix PPC s_lock operations to work correctly on multi-CPU machines.
- 7233aae50bea 7.3.1 cited
I tried to build PostgreSQL with the following step to see backends hung
- 50938576d482 7.3.1 cited
Complete merge of all old man page information.
- f2f43efbe1d5 7.1.1 cited
s_lock aix patch.
- e3b06a871b63 7.1.1 cited

On 15.10.25 17:58, Srirama Kucherlapati wrote:
> Hi Andres and team,
> 
> Please find attached the patch addressing Meson build changes for AIX.
> 
> We tried to build using below meson
> 
> ## meson -v
> 
> 1.6.1
> 
> For the following files, the shared_module() function requires 
> specifying the
> 
> appropriate symbol import file, which is provided via the aix_link_args
> 
> variable:
> 
> src/backend/jit/llvm/meson.build
> 
> src/backend/replication/libpqwalreceiver/meson.build
> 
> src/backend/replication/pgoutput/meson.build
> 
> src/backend/snowball/meson.build
> 
> src/backend/utils/mb/conversion_procs/meson.build
> 
> Additionally, with the latest version of Meson, when building static 
> libraries,
> 
> the library file name must be suffixed with “_static” in the following 
> files:
> 
> src/interfaces/ecpg/compatlib/meson.build
> 
> src/interfaces/ecpg/ecpglib/meson.build
> 
> src/interfaces/ecpg/pgtypeslib/meson.build
> 
> src/interfaces/libpq/meson.build

It is not going to be acceptable to sprinkle this much AIX-specific code 
around.  Those changes to the meson.build files were not needed before 
AIX support was removed.  You should find a way to do it without these 
changes.

The changes in src/include/port/aix.h in your patch don't make sense. 
This indicates that you are doing something wrong in your local builds. 
Please fix that.