Hi Ingo -- When we upgraded to llvm-10.0.0, I had to mark flang as BROKEN [0] because upstream has not yet ported what is now called Classic Flang to llvm-10, as most efforts have shifted to the new Flang, which has been upstreamed into mainline LLVM. There are plans to upgrade Classic Flang to llvm-10 but nothing as of yet has manifested, and there is no timetable for such an upgrade.
As a result, R will no longer build on arm64, since it uses flang for its Fortran code. The solution is, at least for now, to switch arm64 to use gfortran, which the attached diff does. I don't have an arm64 available to test, so I am hoping someone can volunteer to test this out and make sure it builds. OK? ~Brian [0] https://marc.info/?l=openbsd-ports-cvs&m=159661468621760&w=2
Index: Makefile =================================================================== RCS file: /cvs/ports/math/R/Makefile,v retrieving revision 1.118 diff -u -p -r1.118 Makefile --- Makefile 23 Jun 2020 18:54:24 -0000 1.118 +++ Makefile 13 Aug 2020 14:34:00 -0000 @@ -2,6 +2,7 @@ COMMENT= powerful math/statistics/graphics language DISTNAME= R-4.0.2 +REVISION= 0 SO_VERSION= 37.0 .for _lib in R Rblas Rlapack @@ -29,11 +30,7 @@ MASTER_SITES= https://cran.r-project.org MODULES= fortran \ x11/tk -.if ${MACHINE_ARCH:Maarch64} -MODFORTRAN_COMPILER = flang -.else MODFORTRAN_COMPILER = gfortran -.endif BUILD_DEPENDS= ${MODFORTRAN_BUILD_DEPENDS} \ archivers/gtar \
