CMake/Modules/Compiler/XL-Fortran.cmake
Brad King 19f267c75e XL: Add support for Ninja and XL Fortran
The Ninja generator's support for Fortran requires that source files
be preprocessed explicitly first.  However, the `xlf` compiler does
not have a simple `-E` option or equivalent to do preprocessing.
The only documented way to get preprocessed output is to use `-d`
to leave it behind, but only at an inflexible location.

Instead, create our own `cpp` wrapper script and substitute it for the
real preprocessor using `-tF -B ...`.  Teach the wrapper to map the
`cpp` output to the location we need and then invoke the real `cpp`
underneath.

Fixes: #19450
2019-11-21 15:59:12 -05:00

25 lines
970 B
CMake

include(Compiler/XL)
__compiler_xl(Fortran)
set(CMAKE_Fortran_SUBMODULE_SEP "_")
set(CMAKE_Fortran_SUBMODULE_EXT ".smod")
set(CMAKE_Fortran_FORMAT_FIXED_FLAG "-qfixed") # [=<right_margin>]
set(CMAKE_Fortran_FORMAT_FREE_FLAG "-qfree") # [=f90|ibm]
set(CMAKE_Fortran_MODDIR_FLAG "-qmoddir=")
set(CMAKE_Fortran_DEFINE_FLAG "-WF,-D")
# -qthreaded = Ensures that all optimizations will be thread-safe
# -qhalt=e = Halt on error messages (rather than just severe errors)
string(APPEND CMAKE_Fortran_FLAGS_INIT " -qthreaded -qhalt=e")
# xlf: 1501-214 (W) command option E reserved for future use - ignored
set(CMAKE_Fortran_CREATE_PREPROCESSED_SOURCE)
set(CMAKE_Fortran_CREATE_ASSEMBLY_SOURCE)
set(CMAKE_Fortran_PREPROCESS_SOURCE
"<CMAKE_Fortran_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -qpreprocess -qnoobject -qsuppress=1517-020 -tF -B \"${CMAKE_CURRENT_LIST_DIR}/XL-Fortran/\" -WF,--cpp,\"${CMAKE_Fortran_XL_CPP}\",--out,<PREPROCESSED_SOURCE> <SOURCE>"
)