check if compiler is_contiguous() capable

Author: scivision

test/contiguous/CMakeLists.txt

@@ -1,5 +1,21 @@
 set_property(DIRECTORY PROPERTY LABELS contiguous)
 
+check_fortran_source_compiles("
+program test
+implicit none
+real :: a(1)
+print '(L1)', is_contiguous(a)
+end program
+"
+HAVE_IS_CONTIGUOUS
+SRC_EXT f90
+)
+
+if(NOT HAVE_IS_CONTIGUOUS)
+  message(WARNING "Fortran compiler does not support is_contiguous")
+  return()
+endif()
+
 add_library(contiguous_fortran ${PROJECT_SOURCE_DIR}/src/contiguous/contiguous.f90)
 target_include_directories(contiguous_fortran INTERFACE ${PROJECT_SOURCE_DIR}/src/contiguous)