これはもっとハッキリ出てるね

https://isocpp.org/files/papers/CppDevSurvey-2026-summary.pdf
CMake 81.9%
Ninja 46.2%
MSBuild 33.5%
Make/nmake 30.7%
Custom / in-house system 14.4%
distcc/ccache 11.1%
Autotools 7.4%
Bazel 6.4%
Meson 6.4%
QMake 6.4%
Gradle 6%
Xcode projects 5.4%
xmake 4.3%
other 3.6%
Maven 3.3%
UnrealBuildTool (UBT) 3%