travis_qmake_gcc_cpp20

Branch
`master`
`develop`

This GitHub is part of the Travis C++ Tutorial.

The goal of this project is to have a clean Travis CI build, with specs:

Build system: qmake
C++ compiler: gcc
C++ version: C++20
Libraries: STL only
Code coverage: none
Source: one single file, main.cpp

More complex builds:

Add Bio++: travis_qmake_gcc_cpp20_bpp
Add Boost: travis_qmake_gcc_cpp20_boost
Add Boost.Test: travis_qmake_gcc_cpp20_boost_test
travis_qmake_gcc_cpp20_clang-format
travis_qmake_gcc_cpp20_clang-tidy
Add CodeChecker: travis_qmake_gcc_cpp20_codechecker
Add Doxygen: travis_qmake_gcc_cpp20_doxygen
Add code coverage: travis_qmake_gcc_cpp20_gcov
Add clang-tidy: travis_qmake_gcc_cpp20_clang-tidy
Add cppcheck: travis_qmake_gcc_cpp20_cppcheck
Add FLTK: travis_qmake_gcc_cpp20_fltk
Add gprof: travis_qmake_gcc_cpp20_gprof
Add magic_enum: travis_qmake_gcc_cpp20_magic_enum
Add OCLint: travis_qmake_gcc_cpp20_oclint
Add perf: travis_qmake_gcc_cpp20_perf
Add Qt: travis_qmake_gcc_cpp20_qt
Add R: travis_qmake_gcc_cpp20_r
Add SDL: travis_qmake_gcc_cpp20_sdl
Add SFML: travis_qmake_gcc_cpp20_sfml
Add Rcpp: travis_qmake_gcc_cpp20_rcpp
Add Urho3D: travis_qmake_gcc_cpp20_urho3d
Add Wt: travis_qmake_gcc_cpp20_wt
Add xml++: travis_qmake_gcc_cpp20_xmlpp
Travis-dependent compilation: travis_qmake_gcc_cpp20_tdc
Travis-dependent run: travis_qmake_gcc_cpp20_tdr

Builds of similar complexity:

Use clang instead of gcc: travis_qmake_clang_cpp20
Use cmake instead of qmake: travis_cmake_gcc_cpp20

Less complex builds: