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Flang: Add support for flang Fortran compiler

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flang is a Fortran compiler built on top of clang [1].  Because flang
shares a lot of commonalities with clang, the flang module piggybacks
off the clang module and overrides certain options.

Add flang to Fortran compiler auto find list.

Update flang preprocessor macros to differentiate from PGI.

Add Flang-FindBinUtils.

[1] https://github.com/flang-compiler/flang
This commit is contained in:
Tin Huynh 2017-08-04 17:50:09 -07:00 committed by Brad King
parent 9bad65940c
commit 2f3a07a981
6 changed files with 31 additions and 2 deletions
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6
Help/release/dev/flang.rst Normal file
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@ -0,0 +1,6 @@
flang
-----
* The `flang`_ Fortran compiler is now supported, with compiler id ``Flang``.
.. _`flang`: https://github.com/flang-compiler/flang

1
Help/variable/CMAKE_LANG_COMPILER_ID.rst
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@ -27,6 +27,7 @@ include:
NVIDIA = NVIDIA CUDA Compiler (nvidia.com)
OpenWatcom = Open Watcom (openwatcom.org)
PGI = The Portland Group (pgroup.com)
Flang = Flang Fortran Compiler
PathScale = PathScale (pathscale.com)
SDCC = Small Device C Compiler (sdcc.sourceforge.net)
SunPro = Oracle Solaris Studio (oracle.com)

6
Modules/CMakeDetermineFortranCompiler.cmake
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@ -52,6 +52,7 @@ else()
# frt: Fujitsu F77 compiler
# pathf90/pathf95/pathf2003: PathScale Fortran compiler
# pgf77/pgf90/pgf95/pgfortran: Portland Group F77/F90/F95 compilers
# flang: Flang Fortran compiler
# xlf/xlf90/xlf95: IBM (AIX) F77/F90/F95 compilers
# lf95: Lahey-Fujitsu F95 compiler
# fl32: Microsoft Fortran 77 "PowerStation" compiler
@ -68,7 +69,7 @@ else()
set(CMAKE_Fortran_COMPILER_LIST
ftn
ifort ifc af95 af90 efc f95 pathf2003 pathf95 pgf95 pgfortran lf95 xlf95
fort gfortran gfortran-4 g95 f90 pathf90 pgf90 xlf90 epcf90 fort77
fort flang gfortran gfortran-4 g95 f90 pathf90 pgf90 xlf90 epcf90 fort77
frt pgf77 xlf fl32 af77 g77 f77 nag
)
@ -77,10 +78,11 @@ else()
set(_Fortran_COMPILER_NAMES_Intel ifort ifc efc)
set(_Fortran_COMPILER_NAMES_Absoft af95 af90 af77)
set(_Fortran_COMPILER_NAMES_PGI pgf95 pgfortran pgf90 pgf77)
set(_Fortran_COMPILER_NAMES_Flang flang)
set(_Fortran_COMPILER_NAMES_PathScale pathf2003 pathf95 pathf90)
set(_Fortran_COMPILER_NAMES_XL xlf)
set(_Fortran_COMPILER_NAMES_VisualAge xlf95 xlf90 xlf)
set(_Fortran_COMPILER_NAMES_NAG nagfor)
set(_Fortran_COMPILER_NAMES_NAG nagfor)
endif()
_cmake_find_compiler(Fortran)

7
Modules/CMakeFortranCompilerId.F.in
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@ -90,6 +90,13 @@
# if defined(__PGIC_PATCHLEVEL__)
# define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
# endif
#elif defined(__FLANG)
PRINT *, 'INFO:compiler[Flang]'
# define COMPILER_VERSION_MAJOR DEC(__FLANG_MAJOR__)
# define COMPILER_VERSION_MINOR DEC(__FLANG_MINOR__)
# if defined(__FLANG_PATCHLEVEL__)
# define COMPILER_VERSION_PATCH DEC(__FLANG_PATCHLEVEL__)
# endif
#elif defined(_SGI_COMPILER_VERSION) || defined(_COMPILER_VERSION)
PRINT *, 'INFO:compiler[MIPSpro]'
# if 0

1
Modules/Compiler/Flang-FindBinUtils.cmake Normal file
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@ -0,0 +1 @@
include(Compiler/Clang-FindBinUtils)

12
Modules/Compiler/Flang-Fortran.cmake Normal file
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@ -0,0 +1,12 @@
include(Compiler/Clang)
__compiler_clang(Fortran)
set(CMAKE_Fortran_PREPROCESS_SOURCE
"<CMAKE_Fortran_COMPILER> -cpp <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> -o <PREPROCESSED_SOURCE>")
set(CMAKE_Fortran_FORMAT_FIXED_FLAG "-ffixed-form")
set(CMAKE_Fortran_FORMAT_FREE_FLAG "-ffree-form")
string(APPEND CMAKE_Fortran_FLAGS_DEBUG_INIT " -fbounds-check")
set(CMAKE_Fortran_MODDIR_FLAG "-J")