2 #=============================================================================
3 # Copyright 2004-2009 Kitware, Inc.
5 # Distributed under the OSI-approved BSD License (the "License");
6 # see accompanying file Copyright.txt for details.
8 # This software is distributed WITHOUT ANY WARRANTY; without even the
9 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
10 # See the License for more information.
11 #=============================================================================
12 # (To distribute this file outside of CMake, substitute the full
13 # License text for the above reference.)
15 # determine the compiler to use for Fortran programs
16 # NOTE, a generator may set CMAKE_Fortran_COMPILER before
17 # loading this file to force a compiler.
18 # use environment variable FC first if defined by user, next use
19 # the cmake variable CMAKE_GENERATOR_FC which can be defined by a generator
20 # as a default compiler
22 include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
23 include(Platform/${CMAKE_SYSTEM_NAME}-Fortran OPTIONAL)
24 if(NOT CMAKE_Fortran_COMPILER_NAMES)
25 set(CMAKE_Fortran_COMPILER_NAMES f95)
28 if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
29 set(CMAKE_Fortran_COMPILER_ID_RUN 1)
30 set(CMAKE_Fortran_PLATFORM_ID "Windows")
31 set(CMAKE_Fortran_COMPILER_ID "Intel")
32 set(CMAKE_Fortran_COMPILER "${CMAKE_GENERATOR_FC}")
33 elseif("${CMAKE_GENERATOR}" MATCHES "Xcode")
34 set(CMAKE_Fortran_COMPILER_XCODE_TYPE sourcecode.fortran.f90)
36 if(NOT CMAKE_Fortran_COMPILER)
37 # prefer the environment variable CC
38 if($ENV{FC} MATCHES ".+")
39 get_filename_component(CMAKE_Fortran_COMPILER_INIT $ENV{FC} PROGRAM PROGRAM_ARGS CMAKE_Fortran_FLAGS_ENV_INIT)
40 if(CMAKE_Fortran_FLAGS_ENV_INIT)
41 set(CMAKE_Fortran_COMPILER_ARG1 "${CMAKE_Fortran_FLAGS_ENV_INIT}" CACHE STRING "First argument to Fortran compiler")
43 if(EXISTS ${CMAKE_Fortran_COMPILER_INIT})
45 message(FATAL_ERROR "Could not find compiler set in environment variable FC:\n$ENV{FC}.")
49 # next try prefer the compiler specified by the generator
50 if(CMAKE_GENERATOR_FC)
51 if(NOT CMAKE_Fortran_COMPILER_INIT)
52 set(CMAKE_Fortran_COMPILER_INIT ${CMAKE_GENERATOR_FC})
56 # finally list compilers to try
57 if(NOT CMAKE_Fortran_COMPILER_INIT)
59 # f77/f90/f95: generic compiler names
60 # g77: GNU Fortran 77 compiler
61 # gfortran: putative GNU Fortran 95+ compiler (in progress)
62 # fort77: native F77 compiler under HP-UX (and some older Crays)
63 # frt: Fujitsu F77 compiler
64 # pathf90/pathf95/pathf2003: PathScale Fortran compiler
65 # pgf77/pgf90/pgf95/pgfortran: Portland Group F77/F90/F95 compilers
66 # xlf/xlf90/xlf95: IBM (AIX) F77/F90/F95 compilers
67 # lf95: Lahey-Fujitsu F95 compiler
68 # fl32: Microsoft Fortran 77 "PowerStation" compiler
69 # af77: Apogee F77 compiler for Intergraph hardware running CLIX
70 # epcf90: "Edinburgh Portable Compiler" F90
71 # fort: Compaq (now HP) Fortran 90/95 compiler for Tru64 and Linux/Alpha
72 # ifc: Intel Fortran 95 compiler for Linux/x86
73 # efc: Intel Fortran 95 compiler for IA64
75 # The order is 95 or newer compilers first, then 90,
76 # then 77 or older compilers, gnu is always last in the group,
77 # so if you paid for a compiler it is picked by default.
78 set(CMAKE_Fortran_COMPILER_LIST
79 ifort ifc af95 af90 efc f95 pathf2003 pathf95 pgf95 pgfortran lf95 xlf95
80 fort gfortran gfortran-4 g95 f90 pathf90 pgf90 xlf90 epcf90 fort77
81 frt pgf77 xlf fl32 af77 g77 f77
84 # Vendor-specific compiler names.
85 set(_Fortran_COMPILER_NAMES_GNU gfortran gfortran-4 g95 g77)
86 set(_Fortran_COMPILER_NAMES_Intel ifort ifc efc)
87 set(_Fortran_COMPILER_NAMES_Absoft af95 af90 af77)
88 set(_Fortran_COMPILER_NAMES_PGI pgf95 pgfortran pgf90 pgf77)
89 set(_Fortran_COMPILER_NAMES_PathScale pathf2003 pathf95 pathf90)
90 set(_Fortran_COMPILER_NAMES_XL xlf)
91 set(_Fortran_COMPILER_NAMES_VisualAge xlf95 xlf90 xlf)
94 _cmake_find_compiler(Fortran)
97 # we only get here if CMAKE_Fortran_COMPILER was specified using -D or a pre-made CMakeCache.txt
98 # (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE
99 # if CMAKE_Fortran_COMPILER is a list of length 2, use the first item as
100 # CMAKE_Fortran_COMPILER and the 2nd one as CMAKE_Fortran_COMPILER_ARG1
102 list(LENGTH CMAKE_Fortran_COMPILER _CMAKE_Fortran_COMPILER_LIST_LENGTH)
103 if("${_CMAKE_Fortran_COMPILER_LIST_LENGTH}" EQUAL 2)
104 list(GET CMAKE_Fortran_COMPILER 1 CMAKE_Fortran_COMPILER_ARG1)
105 list(GET CMAKE_Fortran_COMPILER 0 CMAKE_Fortran_COMPILER)
108 # if a compiler was specified by the user but without path,
109 # now try to find it with the full path
110 # if it is found, force it into the cache,
111 # if not, don't overwrite the setting (which was given by the user) with "NOTFOUND"
112 # if the C compiler already had a path, reuse it for searching the CXX compiler
113 get_filename_component(_CMAKE_USER_Fortran_COMPILER_PATH "${CMAKE_Fortran_COMPILER}" PATH)
114 if(NOT _CMAKE_USER_Fortran_COMPILER_PATH)
115 find_program(CMAKE_Fortran_COMPILER_WITH_PATH NAMES ${CMAKE_Fortran_COMPILER})
116 mark_as_advanced(CMAKE_Fortran_COMPILER_WITH_PATH)
117 if(CMAKE_Fortran_COMPILER_WITH_PATH)
118 set(CMAKE_Fortran_COMPILER ${CMAKE_Fortran_COMPILER_WITH_PATH}
119 CACHE STRING "Fortran compiler" FORCE)
123 mark_as_advanced(CMAKE_Fortran_COMPILER)
125 # Each entry in this list is a set of extra flags to try
126 # adding to the compile line to see if it helps produce
127 # a valid identification executable.
128 set(CMAKE_Fortran_COMPILER_ID_TEST_FLAGS
129 # Try compiling to an object file only.
132 # Intel on windows does not preprocess by default.
137 # Build a small source file to identify the compiler.
138 if(NOT CMAKE_Fortran_COMPILER_ID_RUN)
139 set(CMAKE_Fortran_COMPILER_ID_RUN 1)
141 # Table of per-vendor compiler id flags with expected output.
142 list(APPEND CMAKE_Fortran_COMPILER_ID_VENDORS Compaq)
143 set(CMAKE_Fortran_COMPILER_ID_VENDOR_FLAGS_Compaq "-what")
144 set(CMAKE_Fortran_COMPILER_ID_VENDOR_REGEX_Compaq "Compaq Visual Fortran")
145 list(APPEND CMAKE_Fortran_COMPILER_ID_VENDORS NAG) # Numerical Algorithms Group
146 set(CMAKE_Fortran_COMPILER_ID_VENDOR_FLAGS_NAG "-V")
147 set(CMAKE_Fortran_COMPILER_ID_VENDOR_REGEX_NAG "NAG Fortran Compiler")
149 # Try to identify the compiler.
150 set(CMAKE_Fortran_COMPILER_ID)
151 include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
152 CMAKE_DETERMINE_COMPILER_ID(Fortran FFLAGS CMakeFortranCompilerId.F)
154 # Fall back to old is-GNU test.
155 if(NOT CMAKE_Fortran_COMPILER_ID)
156 exec_program(${CMAKE_Fortran_COMPILER}
157 ARGS ${CMAKE_Fortran_COMPILER_ID_FLAGS_LIST} -E "\"${CMAKE_ROOT}/Modules/CMakeTestGNU.c\""
158 OUTPUT_VARIABLE CMAKE_COMPILER_OUTPUT RETURN_VALUE CMAKE_COMPILER_RETURN)
159 if(NOT CMAKE_COMPILER_RETURN)
160 if("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_GNU.*" )
161 set(CMAKE_Fortran_COMPILER_ID "GNU")
162 file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
163 "Determining if the Fortran compiler is GNU succeeded with "
164 "the following output:\n${CMAKE_COMPILER_OUTPUT}\n\n")
166 file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
167 "Determining if the Fortran compiler is GNU failed with "
168 "the following output:\n${CMAKE_COMPILER_OUTPUT}\n\n")
170 if(NOT CMAKE_Fortran_PLATFORM_ID)
171 if("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_MINGW.*" )
172 set(CMAKE_Fortran_PLATFORM_ID "MinGW")
174 if("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_CYGWIN.*" )
175 set(CMAKE_Fortran_PLATFORM_ID "Cygwin")
181 # Set old compiler and platform id variables.
182 if("${CMAKE_Fortran_COMPILER_ID}" MATCHES "GNU")
183 set(CMAKE_COMPILER_IS_GNUG77 1)
185 if("${CMAKE_Fortran_PLATFORM_ID}" MATCHES "MinGW")
186 set(CMAKE_COMPILER_IS_MINGW 1)
187 elseif("${CMAKE_Fortran_PLATFORM_ID}" MATCHES "Cygwin")
188 set(CMAKE_COMPILER_IS_CYGWIN 1)
192 if (NOT _CMAKE_TOOLCHAIN_LOCATION)
193 get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_Fortran_COMPILER}" PATH)
196 # if we have a fortran cross compiler, they have usually some prefix, like
197 # e.g. powerpc-linux-gfortran, arm-elf-gfortran or i586-mingw32msvc-gfortran , optionally
198 # with a 3-component version number at the end (e.g. arm-eabi-gcc-4.5.2).
199 # The other tools of the toolchain usually have the same prefix
200 # NAME_WE cannot be used since then this test will fail for names lile
201 # "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be
202 # "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
203 if (CMAKE_CROSSCOMPILING
204 AND "${CMAKE_Fortran_COMPILER_ID}" MATCHES "GNU"
205 AND NOT _CMAKE_TOOLCHAIN_PREFIX)
206 get_filename_component(COMPILER_BASENAME "${CMAKE_Fortran_COMPILER}" NAME)
207 if (COMPILER_BASENAME MATCHES "^(.+-)g?fortran(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
208 set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
211 # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
212 # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
213 if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
214 set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
218 include(CMakeFindBinUtils)
220 if(MSVC_Fortran_ARCHITECTURE_ID)
221 set(SET_MSVC_Fortran_ARCHITECTURE_ID
222 "set(MSVC_Fortran_ARCHITECTURE_ID ${MSVC_Fortran_ARCHITECTURE_ID})")
224 # configure variables set in this file for fast reload later on
225 configure_file(${CMAKE_ROOT}/Modules/CMakeFortranCompiler.cmake.in
226 ${CMAKE_PLATFORM_INFO_DIR}/CMakeFortranCompiler.cmake
227 @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
229 set(CMAKE_Fortran_COMPILER_ENV_VAR "FC")