Re: Extension using Meson as build system

On Sun, Jun 30, 2024 at 9:31 PM Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
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> ne 30. 6. 2024 v 15:28 odesílatel Junwang Zhao <zhjwpku(at)gmail(dot)com> napsal:
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>> On Sun, Jun 30, 2024 at 9:20 PM Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>> >
>> > Hi
>> >
>> > ne 30. 6. 2024 v 15:17 odesílatel Junwang Zhao <zhjwpku(at)gmail(dot)com> napsal:
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>> >> Hi hackers,
>> >>
>> >> Is there any extension that uses meson as build systems?
>> >> I'm starting a extension project that written in c++, cmake is my
>> >> initial choice as the build system, but since PostgreSQL has adopted
>> >> Meson, so I'm wondering if there is any extension that also uses
>> >> meson that I can reference.
>> >
>> >
>> > any extension from contrib package
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>> Ah, yeah, but I'm not sure these extensions have any dependencies
>> on the main project? Never mind, I'll take a look, thanks.
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> any postgres extension has dependency on main project
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> what can be different - if the extension is build inside or outside source code tree

Take contrib/ltree as an example, in Makefile, there are some lines:

ifdef USE_PGXS
PG_CONFIG = pg_config
PGXS := $(shell $(PG_CONFIG) --pgxs)
include $(PGXS)
else
subdir = contrib/ltree
top_builddir = ../..
include $(top_builddir)/src/Makefile.global
include $(top_srcdir)/contrib/contrib-global.mk
endif

I am taking these as the reason that extension can build outside of postgres
source code, but I can't find an equivalent in meson.build.

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>> > https://github.com/postgres/postgres/tree/master/contrib
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>> > probably only these
>> >
>> > Regards
>> >
>> > Pavel
>> >>
>> >>
>> >> --
>> >> Regards
>> >> Junwang Zhao
>> >>
>> >>
>>
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>> --
>> Regards
>> Junwang Zhao

--
Regards
Junwang Zhao