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CheckFortranSourceCompiles: Add support for custom source extension 

Fortran compilers interpret the source extension to decide whether
to preprocess and what language level to use by default.
This commit is contained in:
Brad King 2016-09-22 14:45:55 -04:00
parent 86d2e4276d
commit 4d3874d5ad
2 changed files with 17 additions and 4 deletions
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6
Help/release/dev/CheckFortranSourceCompiles-custom-ext.rst Normal file
View File

@ -0,0 +1,6 @@
CheckFortranSourceCompiles-custom-ext
-------------------------------------
* The :module:`CheckFortranSourceCompiles` module macro
``CHECK_Fortran_SOURCE_COMPILES`` gained a ``SRC_EXT`` option
to specify a custom test Fortran source file extension.

15
Modules/CheckFortranSourceCompiles.cmake
View File

@ -4,7 +4,8 @@
# #
# Check if given Fortran source compiles and links into an executable:: # Check if given Fortran source compiles and links into an executable::
# #
# CHECK_Fortran_SOURCE_COMPILES(<code> <var> [FAIL_REGEX <fail-regex>]) # CHECK_Fortran_SOURCE_COMPILES(<code> <var> [FAIL_REGEX <fail-regex>]
# [SRC_EXT <ext>])
# #
# The arguments are: # The arguments are:
# #
@ -15,6 +16,8 @@
# Will be created as an internal cache variable. # Will be created as an internal cache variable.
# ``FAIL_REGEX <fail-regex>`` # ``FAIL_REGEX <fail-regex>``
# Fail if test output matches this regex. # Fail if test output matches this regex.
# ``SRC_EXT <ext>``
# Use source extension ``.<ext>`` instead of the default ``.F``.
# #
# The following variables may be set before calling this macro to modify # The following variables may be set before calling this macro to modify
# the way the check is run:: # the way the check is run::
@ -43,9 +46,10 @@
macro(CHECK_Fortran_SOURCE_COMPILES SOURCE VAR) macro(CHECK_Fortran_SOURCE_COMPILES SOURCE VAR)
if(NOT DEFINED "${VAR}") if(NOT DEFINED "${VAR}")
set(_FAIL_REGEX) set(_FAIL_REGEX)
set(_SRC_EXT)
set(_key) set(_key)
foreach(arg ${ARGN}) foreach(arg ${ARGN})
if("${arg}" MATCHES "^(FAIL_REGEX)$") if("${arg}" MATCHES "^(FAIL_REGEX|SRC_EXT)$")
set(_key "${arg}") set(_key "${arg}")
elseif(_key) elseif(_key)
list(APPEND _${_key} "${arg}") list(APPEND _${_key} "${arg}")
@ -53,6 +57,9 @@ macro(CHECK_Fortran_SOURCE_COMPILES SOURCE VAR)
message(FATAL_ERROR "Unknown argument:\n ${arg}\n") message(FATAL_ERROR "Unknown argument:\n ${arg}\n")
endif() endif()
endforeach() endforeach()
if(NOT _SRC_EXT)
set(_SRC_EXT F)
endif()
set(MACRO_CHECK_FUNCTION_DEFINITIONS set(MACRO_CHECK_FUNCTION_DEFINITIONS
"-D${VAR} ${CMAKE_REQUIRED_FLAGS}") "-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
if(CMAKE_REQUIRED_LIBRARIES) if(CMAKE_REQUIRED_LIBRARIES)
@ -67,7 +74,7 @@ macro(CHECK_Fortran_SOURCE_COMPILES SOURCE VAR)
else() else()
set(CHECK_Fortran_SOURCE_COMPILES_ADD_INCLUDES) set(CHECK_Fortran_SOURCE_COMPILES_ADD_INCLUDES)
endif() endif()
file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.F" file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.${_SRC_EXT}"
"${SOURCE}\n") "${SOURCE}\n")
if(NOT CMAKE_REQUIRED_QUIET) if(NOT CMAKE_REQUIRED_QUIET)
@ -75,7 +82,7 @@ macro(CHECK_Fortran_SOURCE_COMPILES SOURCE VAR)
endif() endif()
try_compile(${VAR} try_compile(${VAR}
${CMAKE_BINARY_DIR} ${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.F ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.${_SRC_EXT}
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
${CHECK_Fortran_SOURCE_COMPILES_ADD_LIBRARIES} ${CHECK_Fortran_SOURCE_COMPILES_ADD_LIBRARIES}
CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}