Am 25.02.2018 um 19:35 schrieb Kornel Benko <[email protected]>: > > Am Sonntag, 25. Februar 2018 17:58:36 CET schrieb Stephan Witt > <[email protected]>: >> Hi, >> >> usually I’m using the --enable-cxx11 configure option to build LyX binaries >> on Mac with autotools. >> >> Today I saw a warning with lyx-2.3.0 as follows: >> configure: WARNING: unrecognized options: --enable-cxx11 > > If I understand the code correctly, configure tries to determine itself, which > of '-std=c++14 -std=c++11 -std=c++0x -std=gnu++14 -std=gnu++11 -std=gnu++0x' > may apply. > So, no need for --enable-cxx11. > >> So I tried to build w/o this option. But this leads to a configure error: > > Clean tree?
Yes, every configure and build run starts in an empty directory. > ... > >> Back to configure with the „unrecognized“ option it works and the >> corresponding line in config.log is this: >> >> configure:10942: c++ -stdlib=libc++ -o conftest -std=c++14 -std=c++11 > > I'd say, configure found '-std=c++14'. > But where comes '-std=c++11' from? I’d say from --enable-cxx11 Stephan
