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Help: Add examples to CheckFortranSource{Runs,Compiles}

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This commit is contained in:
Michael Hirsch, Ph.D
2019-01-22 22:24:03 -05:00
committed by Brad King
parent fa5bf870df
commit 3d63d3ce2f
2 changed files with 28 additions and 4 deletions
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Modules/CheckFortranSourceCompiles.cmake
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@@ -17,8 +17,20 @@ Check if given Fortran source compiles and links into an executable.
)
Checks that the source supplied in ``<code>`` can be compiled as a Fortran
source file and linked as an executable (so it must contain at least a
``PROGRAM`` entry point). The result will be stored in the internal cache
source file and linked as an executable. The ``<code>`` must be a Fortran program
containing at least an ``end`` statement--for example:
.. code-block:: cmake
check_fortran_source_compiles("character :: b; error stop b; end" F2018ESTOPOK SRC_EXT F90)
This command can help avoid costly build processes when a compiler lacks support
for a necessary feature, or a particular vendor library is not compatible with
the Fortran compiler version being used. This generate-time check may advise the
user of such before the main build process. See also the
:command:`check_fortran_source_runs` command to actually run the compiled code.
The result will be stored in the internal cache
variable ``<resultVar>``, with a boolean true value for success and boolean
false for failure.