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Re: [PATCH] meson.build: Don't look for libudev for static builds
From: |
Paolo Bonzini |
Subject: |
Re: [PATCH] meson.build: Don't look for libudev for static builds |
Date: |
Fri, 2 Oct 2020 15:05:21 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 |
On 02/10/20 14:35, Peter Maydell wrote:
>
> It would be better to do the "see if a static library is present"
> test. This isn't too hard to do in configure (compare that
> six line fix to the detection of libgio). Hopefully it is
> not too hard to do in meson ?
Yes, something like:
if enable_static
skeleton = 'int main(void) { return 0; }'
if not cc.links(skeleton, dependencies: libudev)
if get_option('mpath').enabled()
error('Cannot link with libudev')
else
warning('Cannot link with libudev, disabling')
libudev = not_found
endif
endif
endif
endif
It can be done in meson.build also for dependencies that are still
detected in configure, and we can place it in a loop if we want to do
many tests like these:
if enable_static
dependencies = {'libudev': 'mpath', ...}
skeleton = 'int main(void) { return 0; }'
foreach var, option: dependencies
if not cc.links(skeleton, dependencies: get_variable(var))
if get_option(option).enabled()
error('Cannot link with @0@'.format(var))
else
warning('Cannot link with @0@, disabling'.format(skeleton))
set_variable(var, not_found)
endif
endif
endif
endforeach
endif
This way we don't have 500 lines of this kind of test.
Paolo
- [PATCH] meson.build: Don't look for libudev for static builds, Peter Maydell, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Yonggang Luo, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Paolo Bonzini, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds,
Paolo Bonzini <=
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Peter Maydell, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Paolo Bonzini, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Peter Maydell, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Paolo Bonzini, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Peter Maydell, 2020/10/02
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Yonggang Luo, 2020/10/03
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Paolo Bonzini, 2020/10/03
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Yonggang Luo, 2020/10/03
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Paolo Bonzini, 2020/10/03
- Re: [PATCH] meson.build: Don't look for libudev for static builds, Yonggang Luo, 2020/10/03