CMakeLists: drop some old systems and Intel -extend_source option

Removed -extend_source intel flag. It has no effect for .f90 files, and causes an annoying warning.
Some old, machine-specific SYST entries for decomissioned machines dropped.

CMakeLists.txt

@@ -8,24 +8,19 @@ if(NOT CMAKE_BUILD_TYPE)
 endif()
 
 ### Set compiler flags
-if("$ENV{SYST}" STREQUAL "HUYGENS")
-  set(CMAKE_Fortran_COMPILER "mpfort")
-  set(CMAKE_Fortran_FLAGS "-qfree=F90 -qrealsize=8  -qwarn64 -qflttrap=en:ov:zero:inv:imp -qflag=w:e" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_RELEASE "-O4 -qnoipa -qstrict=none:exceptions" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_DEBUG "-O2 -g -qfullpath -C -qflttrp=enable:nanq:overflow:zerodivide -qsigtrap -qinitauto=ff" CACHE STRING "")
-elseif("$ENV{SYST}" STREQUAL "CARTESIUS")
+if("$ENV{SYST}" STREQUAL "CARTESIUS")
   set(CMAKE_Fortran_COMPILER "mpiifort")
-  set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz -extend_source" CACHE STRING "")
+  set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz" CACHE STRING "")
   set(CMAKE_Fortran_FLAGS_RELEASE "-O3" CACHE STRING "")
   set(CMAKE_Fortran_FLAGS_DEBUG "-traceback -fpe1 -O0 -g -check all" CACHE STRING "")
 elseif("$ENV{SYST}" STREQUAL "localpc_ifort")
   set(CMAKE_Fortran_COMPILER "mpif90")
-  set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz -extend_source" CACHE STRING "")
+  set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz" CACHE STRING "")
   set(CMAKE_Fortran_FLAGS_RELEASE "-O3" CACHE STRING "")
   set(CMAKE_Fortran_FLAGS_DEBUG "-traceback -fpe1 -O0 -g -check all" CACHE STRING "")
 elseif("$ENV{SYST}" STREQUAL "HYDRA")
   set(CMAKE_Fortran_COMPILER "mpiifort")
-  set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz -extend_source" CACHE STRING "")
+  set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz" CACHE STRING "")
   set(CMAKE_Fortran_FLAGS_RELEASE "-O3" CACHE STRING "")
   set(CMAKE_Fortran_FLAGS_DEBUG "-traceback -fpe1 -O0 -g -check all" CACHE STRING "")
 elseif("$ENV{SYST}" STREQUAL "FEDORA")
@@ -34,31 +29,16 @@ elseif("$ENV{SYST}" STREQUAL "FEDORA")
   set (CMAKE_Fortran_FLAGS_RELEASE "-funroll-all-loops -fno-f2c -O3" CACHE STRING "")
   set (CMAKE_Fortran_FLAGS_DEBUG   "-finit-real=nan -fbounds-check -fbacktrace -fno-f2c -O0 -g -ffpe-trap=invalid,zero,overflow" CACHE STRING "")
   set (CMAKE_Fortran_FLAGS_DEV     "-fbounds-check -fbacktrace -fno-f2c -O3 -g -ffpe-trap=invalid,zero,overflow" CACHE STRING "")
-elseif("$ENV{SYST}" STREQUAL "ECMWF")
-  set(CMAKE_Fortran_COMPILER "ftn")
-  set(CMAKE_Fortran_FLAGS "-s real64" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_RELEASE "-O3" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_DEBUG "-g -R b -K trap=fp" CACHE STRING "")
-elseif("$ENV{SYST}" STREQUAL "ECMWF-intel")
-  set(CMAKE_Fortran_COMPILER "ftn")
-  set(CMAKE_Fortran_FLAGS "-r8 -ftz -extend_source" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_RELEASE "-g -traceback -O3 -xHost" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_DEBUG "-traceback -fpe1 -O0 -g -check all" CACHE STRING "")
-elseif("$ENV{SYST}" STREQUAL "ECMWF-gnu")
-  set(CMAKE_Fortran_COMPILER "ftn")
-  set(CMAKE_Fortran_FLAGS "-cpp -W -Wall -fdefault-real-8 -fdefault-double-8 -march=native -malign-double -ffree-line-length-none" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_RELEASE "-funroll-all-loops -fno-f2c -Ofast -g -fbacktrace" CACHE STRING "")
-  set(CMAKE_Fortran_FLAGS_DEBUG   "-finit-real=nan -fbounds-check -fbacktrace -fno-f2c -O0 -g -ffpe-trap=invalid,zero,overflow" CACHE STRING "")
-elseif("$ENV{SYST}" STREQUAL "gnu-fast")
-  set(CMAKE_Fortran_COMPILER "mpif90")
-  set(CMAKE_Fortran_FLAGS "-cpp -W -Wall -fdefault-real-8 -fdefault-double-8 -march=native -ffree-line-length-none -std=gnu -Werror=implicit-interface" CACHE STRING "")
-  set (CMAKE_Fortran_FLAGS_RELEASE "-funroll-all-loops -fno-f2c -Ofast -g -fbacktrace" CACHE STRING "")
-  set (CMAKE_Fortran_FLAGS_DEBUG   "-finit-real=nan -fbounds-check -fbacktrace -fno-f2c -O0 -g -ffpe-trap=invalid,zero,overflow" CACHE STRING "")
 elseif("$ENV{SYST}" STREQUAL "lisa-intel")
    set(CMAKE_Fortran_COMPILER "mpiifort")
-   set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz -extend_source" CACHE STRING "")
+   set(CMAKE_Fortran_FLAGS "-cpp -r8 -ftz" CACHE STRING "")
    set(CMAKE_Fortran_FLAGS_RELEASE "-g -traceback -O3 -xHost" CACHE STRING "")
    set(CMAKE_Fortran_FLAGS_DEBUG "-traceback -fpe1 -O0 -g -check all" CACHE STRING "")
+ elseif("$ENV{SYST}" STREQUAL "gnu-fast")
+  set(CMAKE_Fortran_COMPILER "mpif90")
+  set(CMAKE_Fortran_FLAGS "-cpp -W -Wall -fdefault-real-8 -fdefault-double-8 -march=native -ffree-line-length-none -std=gnu -Werror=implicit-interface" CACHE STRING "")
+  set (CMAKE_Fortran_FLAGS_RELEASE "-funroll-all-loops -fno-f2c -Ofast -g -fbacktrace" CACHE STRING "")
+  set (CMAKE_Fortran_FLAGS_DEBUG   "-finit-real=nan -fbounds-check -fbacktrace -fno-f2c -O0 -g -ffpe-trap=invalid,zero,overflow" CACHE STRING "")
 elseif("$ENV{SYST}" STREQUAL "FX-Fujitsu")
    set(CMAKE_Fortran_COMPILER "mpifrtpx")
    set(CMAKE_Fortran_FLAGS "-Cpp -CcdRR8 -g -Koptmsg=2" CACHE STRING "")