Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 688730 - dev-libs/flatbuffers-1.10.0 - CMake Error at /usr/share/cmake/Modules/CMakeTestCCompiler.cmake:60 (message): The C compiler "/usr/bin/x86_64-pc-linux-gnu-clang" is not able to compile a simple test program. x86_64-pc-linux-gnu-clang: error: invalid argume
Summary: dev-libs/flatbuffers-1.10.0 - CMake Error at /usr/share/cmake/Modules/CMakeTe...
Status: RESOLVED OBSOLETE
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo KDE team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: systemwide-clang
  Show dependency tree
 
Reported: 2019-06-26 06:18 UTC by Michael Martis
Modified: 2019-06-27 11:46 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

Attachments
Output of `emerge dev-libs/flatbuffers` (emerge-flatbuffers.log,5.44 KB, text/plain)
2019-06-26 06:18 UTC, Michael Martis 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Michael Martis 2019-06-26 06:18:13 UTC 
Created attachment 580962 [details]
Output of `emerge dev-libs/flatbuffers`

Configuration of flatbuffers-1.10.0 with Clang fails with the following error:
> error: invalid argument '-std=c++11' not allowed with 'C'
when checking for a working C compiler.

IIUC this is because Clang is stricter than GCC with compile flags; it doesn't allow a C++ standard to be specified when compiling C code.

A fix would be to replace the line
> append-cppflags -std=c++11
with
> append-cxxflags -std=c++11
in src_configure, as CXX flags are passed exactly when C++ code is being compiled.

Attached are the emerge logs for Chromium OS (which uses Clang).
Comment 1 Andreas Sturmlechner gentoo-dev 2019-06-27 11:46:09 UTC 
Just use 1.11.0 instead.