add NOFORTARN switch to disable fortran language

CMakeLists.txt

@@ -8,7 +8,7 @@ project(gsCInterface LANGUAGES CXX)
 
 include(CheckLanguage)
 check_language(Fortran)
-if(CMAKE_Fortran_COMPILER)
+if(CMAKE_Fortran_COMPILER AND NOT NOFORTRAN)
   enable_language(Fortran)
   include(FortranCInterface)
   FortranCInterface_VERIFY(CXX)
@@ -20,7 +20,7 @@ endif()
 include(gsConfig)
 
 if ( CMAKE_SYSTEM_NAME MATCHES "Linux" )
-   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -names lowercase")
+#   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -names lowercase")
 elseif ( CMAKE_SYSTEM_NAME MATCHES "Windows" )
    set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} /names:lowercase")
 endif()
@@ -61,6 +61,6 @@ install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/src/"
 add_gismo_executable(${CMAKE_CURRENT_SOURCE_DIR}/examples/basis_cexample.c)
 add_gismo_executable(${CMAKE_CURRENT_SOURCE_DIR}/examples/geometry_cexample.c)
 
-if(CMAKE_Fortran_COMPILER)
+if(CMAKE_Fortran_COMPILER AND NOT NOFORTRAN)
   add_gismo_executable(${CMAKE_CURRENT_SOURCE_DIR}/examples/geometry_fexample.F90)
 endif()