Performance difference if compiled with CMake vs Autotools

[95A31]

Hello, I am noticing a big solving time difference if I compile fzn-gecode (release/6.3.0) with cmake

mkdir build
cd build
cmake ..
make -j 8

and autotools

./configure
make

I am using the following command line

./fzn-gecode -s -n 260 ./400x200.fzn

with this model.

[Dekker1]

CMake will produce a debug build by default. If you set the CMake build type to release, it will likely produce much more competitive binaries: https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html

[zayenz]

As @Dekker1 mentioned, the default of compilation with debug/release mode is different.