Horton

Re: [RFC] building postgres with meson

Andrew Dunstan <andrew@dunslane.net>

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From: Andrew Dunstan <andrew@dunslane.net>
To: Andres Freund <andres@anarazel.de>
Cc: pgsql-hackers@postgresql.org
Date: 2021-10-13T12:55:38Z
Lists: pgsql-hackers 
On 10/12/21 9:03 PM, Andres Freund wrote:
> Hi,
>
> On 2021-10-12 13:42:56 -0700, Andres Freund wrote:
>> On 2021-10-12 16:02:14 -0400, Andrew Dunstan wrote:
>>> You do that by putting a path to it at the start of the PATH. The wrinkle in
>>> this is that you need prove to point to one that understands virtual
>>> paths. So you do something like this:
>>>
>>>
>>> PATH="/c/perl/bin:$PATH" PROVE=/bin/core_perl/prove configure ...
>> Oh my.
>>
>> I'll try that later... I wonder if we could make this easier from our side?
>> This is a lot of magic to know.
> I managed to get this working. At first it failed because I don't have
> pexports - it's not available inside msys as far as I could tell. And seems to
> be unmaintained. But replacing pexports with gendef fixed that.
>
> There's this comment in src/pl/plperl/GNUmakefile
>
> # Perl on win32 ships with import libraries only for Microsoft Visual C++,
> # which are not compatible with mingw gcc. Therefore we need to build a
> # new import library to link with.
>
> but I seem to be able to link fine without going through that song-and-dance?
>


It looks like you're not building a native postgres, but rather one
targeted at msys. To build one that's native (i.e. runs without any
presence of msys) you need to do these things before building:

    MSYSTEM=MINGW64
    MSYSTEM_CHOST=x86_64-w64-mingw32
    PATH="/mingw64/bin:$PATH"

pexports will be in the resulting path, and the build will use the
native compiler.

You can use fairywren's config as a guide.


cheers


andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com

Commits

  1. meson: Add 'running' test setup, as a replacement for installcheck

  2. meson: Add support for building with precompiled headers

  3. windows: Adjust FD_SETSIZE via commandline define

  4. meson: docs: Add xml{lint,proc} wrapper to collect dependencies

  5. meson: ecpg: Split definition of static and shared libraries

  6. windows: Set UMDF_USING_NTSTATUS globally, include ntstatus.h

  7. ci: Add hint about downloadable logs to README

  8. meson: Set up absolute rpaths to libdir

  9. meson: Include CFLAGS/c_args in summary and pg_config output

  10. windows: remove date from version number in win32ver.rc

  11. meson: Add initial version of meson based build system

  12. ci: windows: set error mode to not include SEM_NOGPFAULTERRORBOX

  13. Refactor PG_TEST_EXTRA logic in autoconf build

  14. Split TESTDIR into TESTLOGDIR and TESTDATADIR

  15. Don't hardcode tmp_check/ as test directory for tap tests

  16. Extend gendef.pl in preparation for meson

  17. Include c.h instead of postgres.h in src/port/*p{read,write}*.c

  18. Remove DLLTOOL, DLLWRAP from configure / Makefile.global.in

  19. Run xmllint validation only once

  20. Bump minimum Perl version to 5.14

  21. Move gramparse.h to src/backend/parser

  22. Run perltidy over Catalog.pm

  23. Parse catalog .dat files as a whole when compiling the backend

  24. Build all Flex files standalone

  25. Move private declarations shared between guc.c and guc-file.l to new header

  26. Preparatory refactoring for compiling guc-file.c standalone

  27. Move darwin sysroot determination into separate file

  28. Fix MSVC warning in compat_informix/rnull.pgc

  29. solaris: Use versioning scripts instead of -Bsymbolic

  30. Change shared library installation naming on macOS

  31. regress: allow to specify directory containing expected files, for ecpg

  32. Don't add HAVE_LDAP_H HAVE_WINLDAP_H to pg_config.h

  33. Refactor dtrace postprocessing make rules

  34. Add output directory option to gen_node_support.pl

  35. Add output directory argument to generate-unicode_norm_table.pl

  36. Add output file argument to generate-errcodes.pl

  37. Add output path arg in generate-lwlocknames.pl

  38. Move snowball_create.sql creation into perl file

  39. ecpg: Output dir, source dir, stamp file argument for preproc/*.pl

  40. psql: Output dir and dependency generation for sql_help

  41. Deal with paths containing \ and spaces in basebackup_to_shell tests

  42. Remove LLVM_CONFIG from Makefile.global.in

  43. Make update-unicode target work in vpath builds

  44. Refactor DLSUFFIX handling

  45. ldap tests: Add paths for openbsd.

  46. ldap tests: Don't run on unsupported operating systems.

  47. Remove check for accept() argument types

  48. Move our p{read,write}v replacements into their own files.

  49. Adjust yywrap macro for non-reentrant scanners for MSVC.

  50. Remove any -arch switches given in ExtUtils::Embed's ldopts from our

  51. Change PL/Perl and Pg interface build to use configured compiler and

  52. Apparently, on some systems, ExtUtils::Embed and MakeMaker are slightly