Re: Fwd: Packaging a cmake C++ header only library requiring C++17
Hi Josh, Josh Marshall writes: > Hello, > > nckd and I have gone back and forth over a few days in IRC trying to > help me out here. I am trying to package magic-enum ( > https://github.com/Neargye/magic_enum ) which is a C++ header only > library requiring at least C++ 17, and uses the cmake build system. > The problem which we can't figure out is why the compiler being used > is the default for `gcc` at 7.4 while there is explicit use and > dependency on `gcc` 9.2 via `gcc-9`. We're stumped. > > Attached are the latest package definitions, build log, and cli > invocation and output. If you change 'inputs' to 'native-inputs', then CMake will pick up the correct GCC, and you can remove the (arguments ...) block. (you probably wanted -std=gnu++17 instead of -std=gnu17 too, but no need when using GCC 9) Pro tip: use 'guix build -f magic-enum.scm' to get the build output right in your terminal. :-) HTH, Marius signature.asc Description: PGP signature
Re: Fwd: Packaging a cmake C++ header only library requiring C++17
Josh,
Welcome!
Josh Marshall 写道：
The problem which we can't figure out is why the compiler being
used
is the default for `gcc` at 7.4 while there is explicit use and
dependency on `gcc` 9.2 via `gcc-9`. We're stumped.
Well… I'm easily stumped but that's actually not the case here.
You've added gcc-9 to ‘inputs’. If you rename your ‘inputs’ field
to ‘native-inputs’ you'll the see the magic kick in:
$ guix build -f magic_enum.scm
[…]
g++ (GCC) 9.2.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
:-)
After removing the debugging ‘ --version’, it complains that:
cc1plus: error: command line option ?-std=gnu17? is valid for
C/ObjC but not for C++ [-Werror]
True dat. So I edit your code to read:
#:configure-flags '("-DCMAKE_CXX_FLAGS=-std=c++17")
Note that there's no need for 'quotes' here. Guix doesn't pass
command lines to a shell like many other build systems.
Et pouf!
$ guix build -f magic_enum.scm
[…]
/gnu/store/h9npwdihnwr11xdbqjr20q5w2r6dbw1x-magic-enum-0.6.3
$ tree
/gnu/store/h9npwdihnwr11xdbqjr20q5w2r6dbw1x-magic-enum-0.6.3
/gnu/store/h9npwdihnwr11xdbqjr20q5w2r6dbw1x-magic-enum-0.6.3
├── include
│ └── magic_enum.hpp
├── lib
│ └── cmake
│ └── magic_enum
│ ├── magic_enumConfig.cmake
│ └── magic_enumConfigVersion.cmake
└── share
└── doc
└── magic-enum-0.6.3
└── LICENSE
Glorious.
Resending because I didn't get a post acknowledgement.
I don't think (first) posts are explicitly acknowledged. The
mailing lists are sometimes delayed (seldom more than a few
minutes). The Web archives have a similar but often longer delay.
nckd and I have gone back and forth over a few days in IRC
Close ;-) I know, weird nick, see my real name for an
explanation.
Kind regards,
T G-R
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Re: Fwd: Packaging a cmake C++ header only library requiring C++17
On Fri, 29 Nov 2019 08:22:38 -0500 Josh Marshall wrote > Hello, > > Resending because I didn't get a post acknowledgement. I see it. The previous one was posted too, though: https://lists.gnu.org/archive/html/help-guix/2019-11/msg00199.html
Fwd: Packaging a cmake C++ header only library requiring C++17
Hello, Resending because I didn't get a post acknowledgement. nckd and I have gone back and forth over a few days in IRC trying to help me out here. I am trying to package magic-enum ( https://github.com/Neargye/magic_enum ) which is a C++ header only library requiring at least C++ 17, and uses the cmake build system. The problem which we can't figure out is why the compiler being used is the default for `gcc` at 7.4 while there is explicit use and dependency on `gcc` 9.2 via `gcc-9`. We're stumped. Attached are the latest package definitions, build log, and cli invocation and output. 0545hcvyz4p07jc5xz4crak2cvpxpv-magic-enum-0.6.3.drv.bz2 Description: application/bzip2 magic-enum.scm Description: Binary data stdout Description: Binary data
Fwd: Packaging a cmake C++ header only library requiring C++17
Hello, nckd and I have gone back and forth over a few days in IRC trying to help me out here. I am trying to package magic-enum ( https://github.com/Neargye/magic_enum ) which is a C++ header only library requiring at least C++ 17, and uses the cmake build system. The problem which we can't figure out is why the compiler being used is the default for `gcc` at 7.4 while there is explicit use and dependency on `gcc` 9.2 via `gcc-9`. We're stumped. Attached are the latest package definitions, build log, and cli invocation and output. 0545hcvyz4p07jc5xz4crak2cvpxpv-magic-enum-0.6.3.drv.bz2 Description: application/bzip2 magic-enum.scm Description: Binary data stdout Description: Binary data
