mirror of
https://github.com/reactos/CMake.git
synced 2024-11-29 22:40:25 +00:00
0306080e6e
The commit "FortranCInterface: Honor language flags in checks" taught the FortranCInterface module to pass C and Fortran flags into its detection and verification checks. We improve on the change to allow the '=' character in the language flags. This requires passing the cache entry type with the -D options.
286 lines
12 KiB
CMake
286 lines
12 KiB
CMake
# - Fortran/C Interface Detection
|
|
# This module automatically detects the API by which C and Fortran
|
|
# languages interact. Variables indicate if the mangling is found:
|
|
# FortranCInterface_GLOBAL_FOUND = Global subroutines and functions
|
|
# FortranCInterface_MODULE_FOUND = Module subroutines and functions
|
|
# (declared by "MODULE PROCEDURE")
|
|
# A function is provided to generate a C header file containing macros
|
|
# to mangle symbol names:
|
|
# FortranCInterface_HEADER(<file>
|
|
# [MACRO_NAMESPACE <macro-ns>]
|
|
# [SYMBOL_NAMESPACE <ns>]
|
|
# [SYMBOLS [<module>:]<function> ...])
|
|
# It generates in <file> definitions of the following macros:
|
|
# #define FortranCInterface_GLOBAL (name,NAME) ...
|
|
# #define FortranCInterface_GLOBAL_(name,NAME) ...
|
|
# #define FortranCInterface_MODULE (mod,name, MOD,NAME) ...
|
|
# #define FortranCInterface_MODULE_(mod,name, MOD,NAME) ...
|
|
# These macros mangle four categories of Fortran symbols,
|
|
# respectively:
|
|
# - Global symbols without '_': call mysub()
|
|
# - Global symbols with '_' : call my_sub()
|
|
# - Module symbols without '_': use mymod; call mysub()
|
|
# - Module symbols with '_' : use mymod; call my_sub()
|
|
# If mangling for a category is not known, its macro is left undefined.
|
|
# All macros require raw names in both lower case and upper case.
|
|
# The MACRO_NAMESPACE option replaces the default "FortranCInterface_"
|
|
# prefix with a given namespace "<macro-ns>".
|
|
#
|
|
# The SYMBOLS option lists symbols to mangle automatically with C
|
|
# preprocessor definitions:
|
|
# <function> ==> #define <ns><function> ...
|
|
# <module>:<function> ==> #define <ns><module>_<function> ...
|
|
# If the mangling for some symbol is not known then no preprocessor
|
|
# definition is created, and a warning is displayed.
|
|
# The SYMBOL_NAMESPACE option prefixes all preprocessor definitions
|
|
# generated by the SYMBOLS option with a given namespace "<ns>".
|
|
#
|
|
# Example usage:
|
|
# include(FortranCInterface)
|
|
# FortranCInterface_HEADER(FC.h MACRO_NAMESPACE "FC_")
|
|
# This creates a "FC.h" header that defines mangling macros
|
|
# FC_GLOBAL(), FC_GLOBAL_(), FC_MODULE(), and FC_MODULE_().
|
|
#
|
|
# Example usage:
|
|
# include(FortranCInterface)
|
|
# FortranCInterface_HEADER(FCMangle.h
|
|
# MACRO_NAMESPACE "FC_"
|
|
# SYMBOL_NAMESPACE "FC_"
|
|
# SYMBOLS mysub mymod:my_sub)
|
|
# This creates a "FC.h" header that defines the same FC_*() mangling
|
|
# macros as the previous example plus preprocessor symbols FC_mysub
|
|
# and FC_mymod_my_sub.
|
|
#
|
|
# Another function is provided to verify that the Fortran and C/C++
|
|
# compilers work together:
|
|
# FortranCInterface_VERIFY([CXX] [QUIET])
|
|
# It tests whether a simple test executable using Fortran and C (and
|
|
# C++ when the CXX option is given) compiles and links successfully.
|
|
# The result is stored in the cache entry FortranCInterface_VERIFIED_C
|
|
# (or FortranCInterface_VERIFIED_CXX if CXX is given) as a boolean.
|
|
# If the check fails and QUIET is not given the function terminates
|
|
# with a FATAL_ERROR message describing the problem. The purpose of
|
|
# this check is to stop a build early for incompatible compiler
|
|
# combinations.
|
|
#
|
|
# FortranCInterface is aware of possible GLOBAL and MODULE manglings
|
|
# for many Fortran compilers, but it also provides an interface to
|
|
# specify new possible manglings. Set the variables
|
|
# FortranCInterface_GLOBAL_SYMBOLS
|
|
# FortranCInterface_MODULE_SYMBOLS
|
|
# before including FortranCInterface to specify manglings of the
|
|
# symbols "MySub", "My_Sub", "MyModule:MySub", and "My_Module:My_Sub".
|
|
# For example, the code:
|
|
# set(FortranCInterface_GLOBAL_SYMBOLS mysub_ my_sub__ MYSUB_)
|
|
# # ^^^^^ ^^^^^^ ^^^^^
|
|
# set(FortranCInterface_MODULE_SYMBOLS
|
|
# __mymodule_MOD_mysub __my_module_MOD_my_sub)
|
|
# # ^^^^^^^^ ^^^^^ ^^^^^^^^^ ^^^^^^
|
|
# include(FortranCInterface)
|
|
# tells FortranCInterface to try given GLOBAL and MODULE manglings.
|
|
# (The carets point at raw symbol names for clarity in this example
|
|
# but are not needed.)
|
|
|
|
#=============================================================================
|
|
# Copyright 2008-2009 Kitware, Inc.
|
|
#
|
|
# Distributed under the OSI-approved BSD License (the "License");
|
|
# see accompanying file Copyright.txt for details.
|
|
#
|
|
# This software is distributed WITHOUT ANY WARRANTY; without even the
|
|
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
# See the License for more information.
|
|
#=============================================================================
|
|
# (To distributed this file outside of CMake, substitute the full
|
|
# License text for the above reference.)
|
|
|
|
#-----------------------------------------------------------------------------
|
|
# Execute at most once in a project.
|
|
if(FortranCInterface_SOURCE_DIR)
|
|
return()
|
|
endif()
|
|
|
|
# Use CMake 2.8.0 behavior for this module regardless of including context.
|
|
cmake_policy(PUSH)
|
|
cmake_policy(VERSION 2.8.0)
|
|
|
|
#-----------------------------------------------------------------------------
|
|
# Verify that C and Fortran are available.
|
|
foreach(lang C Fortran)
|
|
if(NOT CMAKE_${lang}_COMPILER_LOADED)
|
|
message(FATAL_ERROR
|
|
"FortranCInterface requires the ${lang} language to be enabled.")
|
|
endif()
|
|
endforeach()
|
|
|
|
#-----------------------------------------------------------------------------
|
|
set(FortranCInterface_SOURCE_DIR ${CMAKE_ROOT}/Modules/FortranCInterface)
|
|
|
|
# Create the interface detection project if it does not exist.
|
|
if(NOT FortranCInterface_BINARY_DIR)
|
|
set(FortranCInterface_BINARY_DIR ${CMAKE_BINARY_DIR}/CMakeFiles/FortranCInterface)
|
|
include(${FortranCInterface_SOURCE_DIR}/Detect.cmake)
|
|
endif()
|
|
|
|
# Load the detection results.
|
|
include(${FortranCInterface_BINARY_DIR}/Output.cmake)
|
|
|
|
#-----------------------------------------------------------------------------
|
|
function(FortranCInterface_HEADER file)
|
|
# Parse arguments.
|
|
if(IS_ABSOLUTE "${file}")
|
|
set(FILE "${file}")
|
|
else()
|
|
set(FILE "${CMAKE_CURRENT_BINARY_DIR}/${file}")
|
|
endif()
|
|
set(MACRO_NAMESPACE "FortranCInterface_")
|
|
set(SYMBOL_NAMESPACE)
|
|
set(SYMBOLS)
|
|
set(doing)
|
|
foreach(arg ${ARGN})
|
|
if("x${arg}" MATCHES "^x(SYMBOLS|SYMBOL_NAMESPACE|MACRO_NAMESPACE)$")
|
|
set(doing "${arg}")
|
|
elseif("x${doing}" MATCHES "^x(SYMBOLS)$")
|
|
list(APPEND "${doing}" "${arg}")
|
|
elseif("x${doing}" MATCHES "^x(SYMBOL_NAMESPACE|MACRO_NAMESPACE)$")
|
|
set("${doing}" "${arg}")
|
|
set(doing)
|
|
else()
|
|
message(AUTHOR_WARNING "Unknown argument: \"${arg}\"")
|
|
endif()
|
|
endforeach()
|
|
|
|
# Generate macro definitions.
|
|
set(HEADER_CONTENT)
|
|
set(_desc_GLOBAL "/* Mangling for Fortran global symbols without underscores. */")
|
|
set(_desc_GLOBAL_ "/* Mangling for Fortran global symbols with underscores. */")
|
|
set(_desc_MODULE "/* Mangling for Fortran module symbols without underscores. */")
|
|
set(_desc_MODULE_ "/* Mangling for Fortran module symbols with underscores. */")
|
|
foreach(macro GLOBAL GLOBAL_ MODULE MODULE_)
|
|
if(FortranCInterface_${macro}_MACRO)
|
|
set(HEADER_CONTENT "${HEADER_CONTENT}
|
|
${_desc_${macro}}
|
|
#define ${MACRO_NAMESPACE}${macro}${FortranCInterface_${macro}_MACRO}
|
|
")
|
|
endif()
|
|
endforeach()
|
|
|
|
# Generate symbol mangling definitions.
|
|
if(SYMBOLS)
|
|
set(HEADER_CONTENT "${HEADER_CONTENT}
|
|
/*--------------------------------------------------------------------------*/
|
|
/* Mangle some symbols automatically. */
|
|
")
|
|
endif()
|
|
foreach(f ${SYMBOLS})
|
|
if("${f}" MATCHES ":")
|
|
# Module symbol name. Parse "<module>:<function>" syntax.
|
|
string(REPLACE ":" ";" pieces "${f}")
|
|
list(GET pieces 0 module)
|
|
list(GET pieces 1 function)
|
|
string(TOUPPER "${module}" m_upper)
|
|
string(TOLOWER "${module}" m_lower)
|
|
string(TOUPPER "${function}" f_upper)
|
|
string(TOLOWER "${function}" f_lower)
|
|
if("${function}" MATCHES "_")
|
|
set(form "_")
|
|
else()
|
|
set(form "")
|
|
endif()
|
|
if(FortranCInterface_MODULE${form}_MACRO)
|
|
set(HEADER_CONTENT "${HEADER_CONTENT}#define ${SYMBOL_NAMESPACE}${module}_${function} ${MACRO_NAMESPACE}MODULE${form}(${m_lower},${f_lower}, ${m_upper},${f_upper})\n")
|
|
else()
|
|
message(AUTHOR_WARNING "No FortranCInterface mangling known for ${f}")
|
|
endif()
|
|
else()
|
|
# Global symbol name.
|
|
if("${f}" MATCHES "_")
|
|
set(form "_")
|
|
else()
|
|
set(form "")
|
|
endif()
|
|
string(TOUPPER "${f}" f_upper)
|
|
string(TOLOWER "${f}" f_lower)
|
|
if(FortranCInterface_GLOBAL${form}_MACRO)
|
|
set(HEADER_CONTENT "${HEADER_CONTENT}#define ${SYMBOL_NAMESPACE}${f} ${MACRO_NAMESPACE}GLOBAL${form}(${f_lower}, ${f_upper})\n")
|
|
else()
|
|
message(AUTHOR_WARNING "No FortranCInterface mangling known for ${f}")
|
|
endif()
|
|
endif()
|
|
endforeach(f)
|
|
|
|
# Store the content.
|
|
configure_file(${FortranCInterface_SOURCE_DIR}/Macro.h.in ${FILE} @ONLY)
|
|
endfunction()
|
|
|
|
function(FortranCInterface_VERIFY)
|
|
# Check arguments.
|
|
|
|
set(lang C)
|
|
set(quiet 0)
|
|
set(verify_cxx 0)
|
|
foreach(arg ${ARGN})
|
|
if("${arg}" STREQUAL "QUIET")
|
|
set(quiet 1)
|
|
elseif("${arg}" STREQUAL "CXX")
|
|
set(lang CXX)
|
|
set(verify_cxx 1)
|
|
else()
|
|
message(FATAL_ERROR
|
|
"FortranCInterface_VERIFY - called with unknown argument:\n ${arg}")
|
|
endif()
|
|
endforeach()
|
|
|
|
if(NOT CMAKE_${lang}_COMPILER_LOADED)
|
|
message(FATAL_ERROR
|
|
"FortranCInterface_VERIFY(${lang}) requires ${lang} to be enabled.")
|
|
endif()
|
|
|
|
# Build the verification project if not yet built.
|
|
if(NOT DEFINED FortranCInterface_VERIFIED_${lang})
|
|
set(_desc "Verifying Fortran/${lang} Compiler Compatibility")
|
|
message(STATUS "${_desc}")
|
|
|
|
# Build a sample project which reports symbols.
|
|
try_compile(FortranCInterface_VERIFY_${lang}_COMPILED
|
|
${FortranCInterface_BINARY_DIR}/Verify${lang}
|
|
${FortranCInterface_SOURCE_DIR}/Verify
|
|
VerifyFortranC
|
|
CMAKE_FLAGS -DVERIFY_CXX=${verify_cxx}
|
|
-DCMAKE_VERBOSE_MAKEFILE=ON
|
|
"-DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS}"
|
|
"-DCMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}"
|
|
"-DCMAKE_Fortran_FLAGS:STRING=${CMAKE_Fortran_FLAGS}"
|
|
OUTPUT_VARIABLE _output)
|
|
file(WRITE "${FortranCInterface_BINARY_DIR}/Verify${lang}/output.txt" "${_output}")
|
|
|
|
# Report results.
|
|
if(FortranCInterface_VERIFY_${lang}_COMPILED)
|
|
message(STATUS "${_desc} - Success")
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
|
|
"${_desc} passed with the following output:\n${_output}\n\n")
|
|
set(FortranCInterface_VERIFIED_${lang} 1 CACHE INTERNAL "Fortran/${lang} compatibility")
|
|
else()
|
|
message(STATUS "${_desc} - Failed")
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
|
|
"${_desc} failed with the following output:\n${_output}\n\n")
|
|
set(FortranCInterface_VERIFIED_${lang} 0 CACHE INTERNAL "Fortran/${lang} compatibility")
|
|
endif()
|
|
unset(FortranCInterface_VERIFY_${lang}_COMPILED CACHE)
|
|
endif()
|
|
|
|
# Error if compilers are incompatible.
|
|
if(NOT FortranCInterface_VERIFIED_${lang} AND NOT quiet)
|
|
file(READ "${FortranCInterface_BINARY_DIR}/Verify${lang}/output.txt" _output)
|
|
string(REGEX REPLACE "\n" "\n " _output "${_output}")
|
|
message(FATAL_ERROR
|
|
"The Fortran compiler:\n ${CMAKE_Fortran_COMPILER}\n"
|
|
"and the ${lang} compiler:\n ${CMAKE_${lang}_COMPILER}\n"
|
|
"failed to compile a simple test project using both languages. "
|
|
"The output was:\n ${_output}")
|
|
endif()
|
|
endfunction()
|
|
|
|
# Restore including context policies.
|
|
cmake_policy(POP)
|