Re: [gentoo-dev] How to add -std=c++14 to CXXFLAGS of a cmake.eclass based package?

[Azamat Hackimov]

Hello.

You need to add

set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

into CMakeLists.txt after project() declaration via patching. Since
this is an upstream issue, you need to notify upstream about C++17
incompatibility.

сб, 17 дек. 2022 г. в 14:35, Andrey Grozin <grozin@×××××××××××××××××.org>:
>
> Hello *,
>
> I'm trying to package a new version of sci-visualization/gle which now
> uses cmake. After some patching CMakeLists.txt, it configures
> successfully. But at build time it spits zillion errors
>
> error: ISO C++17 does not allow dynamic exception specifications
>
> The natural thing to try is to add -std=c++14 to CXXFLAGS. So I tried
>
> src_compile() {
>      CXXFLAGS="${CXXFLAGS} -std=c++14" cmake_src_compile
> }
>
> but this makes no difference, c++17 is still used. How to convince
> cmake_src_compile to use -std=c++14?
>
> Thanks in advance,
> Andrey
>


-- 
From Siberia with Love!