Harshula Jayasuriya comments

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                                            Harshula Jayasuriya

Force ar/ranlib to do a deterministic build.

> Thanks @harshula! Does `ar` on Xcode have a different option set? Sorry, I'm not familiar with Xcode.

CMake uses different compiler flags to autotools

https://github.com/wavebitscientific/datetime-fortran/pull/75 does **not** address this issue.

CMake uses different compiler flags to autotools

Is -O3 preferred over -O2 by the fortran community?

CMake uses different compiler flags to autotools

**Notes:** ``` $ gfortran --version GNU Fortran (GCC) 8.5.0 20210514 (Red Hat 8.5.0-10) $ ar --version GNU ar version 2.30-113.el8 ``` ``` /bin/f95 -O3 -DNDEBUG -O3 -Jinclude -c [...]/datetime-fortran.git/src/datetime_module.f90 -o...

Force ar/ranlib to do a deterministic build.

**Notes** https://gitlab.kitware.com/cmake/cmake/-/issues/19852 > My current workaround is to set CMAKE__CREATE_STATIC_LIBRARY on macOS platforms to something along the lines of /usr/bin/xcrun libtool -static -D -o , which seems to have the...

Force ar/ranlib to do a deterministic build.

Closing this as **wontfix** because: * On Linux, it appears that some distros are defaulting to building binutils with "--enable-deterministic-archives". * CMake should have a better mechanism to do this.