Add NAG Fortran compiler information files

On Linux the NAG Fortran compiler uses gcc under the hood to link.  Use
"-Wl,-v" to pass "-v" to the underlying gcc compiler to get verbose link
output.  Detect the NAG Fortran directory (using -dryrun) and then honor
object files in the directory referenced in the implicit link line.
Pass real linker options with "-Wl,-Xlinker,".  The -Wl, gets through
the NAG front-end and the -Xlinker gets through the gcc front-end.
This commit is contained in:
Brad King 2010-12-09 17:12:19 -05:00
parent 24cc3d4817
commit af2ad90991
3 changed files with 47 additions and 0 deletions

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# Help CMAKE_PARSE_IMPLICIT_LINK_INFO detect NAG Fortran object files.
if(NOT CMAKE_Fortran_COMPILER_WORKS AND NOT CMAKE_Fortran_COMPILER_FORCED)
message(STATUS "Detecting NAG Fortran directory")
# Run with -dryrun to see sample "link" line.
execute_process(
COMMAND ${CMAKE_Fortran_COMPILER} dummy.o -dryrun
OUTPUT_VARIABLE _dryrun
ERROR_VARIABLE _dryrun
)
# Match an object file.
string(REGEX MATCH "/[^ ]*/[^ /][^ /]*\\.o" _nag_obj "${_dryrun}")
if(_nag_obj)
# Parse object directory and convert to a regex.
string(REGEX REPLACE "/[^/]*$" "" _nag_dir "${_nag_obj}")
string(REGEX REPLACE "([][+.*()^])" "\\\\\\1" _nag_regex "${_nag_dir}")
set(CMAKE_Fortran_IMPLICIT_OBJECT_REGEX "^${_nag_regex}/")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Detecting NAG Fortran directory with -dryrun found\n"
" object: ${_nag_obj}\n"
" directory: ${_nag_dir}\n"
" regex: ${CMAKE_Fortran_IMPLICIT_OBJECT_REGEX}\n"
"from output:\n${_dryrun}\n\n")
message(STATUS "Detecting NAG Fortran directory - ${_nag_dir}")
else()
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Detecting NAG Fortran directory with -dryrun failed:\n${_dryrun}\n\n")
message(STATUS "Detecting NAG Fortran directory - failed")
endif()
endif()
set(CMAKE_Fortran_MODDIR_FLAG "-mdir ")
set(CMAKE_SHARED_LIBRARY_Fortran_FLAGS "-PIC")

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set(CMAKE_Fortran_VERBOSE_FLAG "-Wl,-v") # Runs gcc under the hood.
# Need -fpp explicitly on case-insensitive filesystem.
set(CMAKE_Fortran_COMPILE_OBJECT
"<CMAKE_Fortran_COMPILER> -fpp -o <OBJECT> <DEFINES> <FLAGS> -c <SOURCE>")

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set(CMAKE_Fortran_VERBOSE_FLAG "-Wl,-v") # Runs gcc under the hood.
# Need one "-Wl," level to send flag through to gcc.
# Use "-Xlinker" to get through gcc to real linker.
set(CMAKE_SHARED_LIBRARY_CREATE_Fortran_FLAGS "-Wl,-shared")
set(CMAKE_SHARED_LIBRARY_RUNTIME_Fortran_FLAG "-Wl,-Xlinker,-rpath,-Xlinker,")
set(CMAKE_SHARED_LIBRARY_RUNTIME_Fortran_FLAG_SEP ":")
set(CMAKE_SHARED_LIBRARY_RPATH_LINK_Fortran_FLAG "-Wl,-Xlinker,-rpath-link,-Xlinker,")
set(CMAKE_SHARED_LIBRARY_SONAME_Fortran_FLAG "-Wl,-Xlinker,-soname,-Xlinker,")
set(CMAKE_SHARED_LIBRARY_LINK_Fortran_FLAGS "-Wl,-rdynamic")