gmake: g++: Command not found in qtbase#dev

Continuous Integration: Failed

The configure script returned an error. The CI rejected the staged commits due to the beforementioned reason. Possible reason could be a bug in one of the commits or some more recent change. Please investigate it.

The error was in "qt/qtbase", revision: c16b02c447e01fe2ac840e38de97962656df5d3a

Build log: https://testresults.qt.io/logs/qt/qtbase/1bbf9e6c10310afbb038276193acedba64ec8d45/LinuxopenSUSE_42_3x86_64LinuxWebAssemblyx86_64GCCqtci-linux-openSUSE-42.3-x86_64DeveloperBuild_NoPch_DisableTests/2a48a3b7dcb9652b1532a3ad14de7580b5b9b1ee/build_1549373695/log.txt.gz

Details: https://testresults.qt.io/coin/integration/qt/qtbase/tasks/1549362708

Tested changes (refs/builds/qtci/dev/1547548071):
https://codereview.qt-project.org/#/q/712a7720bb605d80501c5b79eaafac1d3e4b94c7,n,z Support debug_and_release option (which is the default under Windows)
https://codereview.qt-project.org/#/q/372dba55d5904fb8540347d934643631f43b1142,n,z Docker-based test servers for network-related Qt autotests on Windows
https://codereview.qt-project.org/#/q/78531531617f08dbecc6418fc473a3829fb18e2c,n,z Use environment variables to replace the hard-code value of domain name
https://codereview.qt-project.org/#/q/310d28d2752a070f3872bbba954887c310429474,n,z Fix QNetworkReply ServiceUnavailableError in macOS
https://codereview.qt-project.org/#/q/889d6cfafd7e85d2730f21c8317df7b9429d4a88,n,z Fix the timing issue of vsftpd during boot (probably invalid config)