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PaddleSpeech/runtime/cmake/FindGFortranLibs.cmake

145 lines
5.8 KiB

#.rst:
# FindGFortranLibs
# --------
# https://github.com/Argonne-National-Laboratory/PIPS/blob/master/cmake/Modules/FindGFortranLibs.cmake
# https://enccs.github.io/cmake-workshop/cxx-fortran/
#
# Find gcc Fortran compiler & library paths
#
# The module defines the following variables:
#
# ::
#
#
# GFORTRANLIBS_FOUND - true if system has gfortran
# LIBGFORTRAN_LIBRARIES - path to libgfortran
# LIBQUADMATH_LIBRARIES - path to libquadmath
# GFORTRAN_LIBARIES_DIR - directory containing libgfortran, libquadmath
# GFORTRAN_INCLUDE_DIR - directory containing gfortran/gcc headers
# LIBGOMP_LIBRARIES - path to libgomp
# LIBGOMP_INCLUDE_DIR - directory containing omp.h header
# GFORTRAN_VERSION_STRING - version of gfortran found
#
set(CMAKE_REQUIRED_QUIET ${LIBIOMP_FIND_QUIETLY})
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Looking for gfortran related libraries...")
endif()
enable_language(Fortran)
if(CMAKE_Fortran_COMPILER_ID MATCHES "GNU")
# Basically, call "gfortran -v" to dump compiler info to the string
# GFORTRAN_VERBOSE_STR, which will be used to get necessary paths
message(STATUS "Extracting library and header information by calling 'gfortran -v'...")
execute_process(COMMAND "${CMAKE_Fortran_COMPILER}" "-v" ERROR_VARIABLE
GFORTRAN_VERBOSE_STR RESULT_VARIABLE FLAG)
# For debugging
message(STATUS "'gfortran -v' returned:")
message(STATUS "${GFORTRAN_VERBOSE_STR}")
# Detect gfortran version
string(REGEX MATCH "gcc version [^\t\n ]+" GFORTRAN_VER_STR "${GFORTRAN_VERBOSE_STR}")
string(REGEX REPLACE "gcc version ([^\t\n ]+)" "\\1" GFORTRAN_VERSION_STRING "${GFORTRAN_VER_STR}")
message(STATUS "Detected gfortran version ${GFORTRAN_VERSION_STRING}")
unset(GFORTRAN_VER_STR)
set(MATCH_REGEX "[^\t\n ]+[\t\n ]+")
set(REPLACE_REGEX "([^\t\n ]+)")
# Find architecture for compiler
string(REGEX MATCH "Target: [^\t\n ]+"
GFORTRAN_ARCH_STR "${GFORTRAN_VERBOSE_STR}")
message(STATUS "Architecture string: ${GFORTRAN_ARCH_STR}")
string(REGEX REPLACE "Target: ([^\t\n ]+)" "\\1"
GFORTRAN_ARCH "${GFORTRAN_ARCH_STR}")
message(STATUS "Detected gfortran architecture: ${GFORTRAN_ARCH}")
unset(GFORTRAN_ARCH_STR)
# Find install prefix, if it exists; if not, use default
string(REGEX MATCH "--prefix=[^\t\n ]+[\t\n ]+"
GFORTRAN_PREFIX_STR "${GFORTRAN_VERBOSE_STR}")
if(NOT GFORTRAN_PREFIX_STR)
message(STATUS "Detected default gfortran prefix")
set(GFORTRAN_PREFIX_DIR "/usr/local") # default prefix for gcc install
else()
string(REGEX REPLACE "--prefix=([^\t\n ]+)" "\\1"
GFORTRAN_PREFIX_DIR "${GFORTRAN_PREFIX_STR}")
endif()
message(STATUS "Detected gfortran prefix: ${GFORTRAN_PREFIX_DIR}")
unset(GFORTRAN_PREFIX_STR)
# Find install exec-prefix, if it exists; if not, use default
string(REGEX MATCH "--exec-prefix=[^\t\n ]+[\t\n ]+" "\\1"
GFORTRAN_EXEC_PREFIX_STR "${GFORTRAN_VERBOSE_STR}")
if(NOT GFORTRAN_EXEC_PREFIX_STR)
message(STATUS "Detected default gfortran exec-prefix")
set(GFORTRAN_EXEC_PREFIX_DIR "${GFORTRAN_PREFIX_DIR}")
else()
string(REGEX REPLACE "--exec-prefix=([^\t\n ]+)" "\\1"
GFORTRAN_EXEC_PREFIX_DIR "${GFORTRAN_EXEC_PREFIX_STR}")
endif()
message(STATUS "Detected gfortran exec-prefix: ${GFORTRAN_EXEC_PREFIX_DIR}")
UNSET(GFORTRAN_EXEC_PREFIX_STR)
# Find library directory and include directory, if library directory specified
string(REGEX MATCH "--libdir=[^\t\n ]+"
GFORTRAN_LIB_DIR_STR "${GFORTRAN_VERBOSE_STR}")
if(NOT GFORTRAN_LIB_DIR_STR)
message(STATUS "Found --libdir flag -- not found")
message(STATUS "Using default gfortran library & include directory paths")
set(GFORTRAN_LIBRARIES_DIR
"${GFORTRAN_EXEC_PREFIX_DIR}/lib/gcc/${GFORTRAN_ARCH}/${GFORTRAN_VERSION_STRING}")
string(CONCAT GFORTRAN_INCLUDE_DIR "${GFORTRAN_LIBRARIES_DIR}" "/include")
else()
message(STATUS "Found --libdir flag -- yes")
string(REGEX REPLACE "--libdir=([^\t\n ]+)" "\\1"
GFORTRAN_LIBRARIES_DIR "${GFORTRAN_LIB_DIR_STR}")
string(CONCAT GFORTRAN_INCLUDE_DIR "${GFORTRAN_LIBRARIES_DIR}" "/gcc/" "${GFORTRAN_ARCH}" "/" "${GFORTRAN_VERSION_STRING}" "/include")
endif()
message(STATUS "gfortran libraries path: ${GFORTRAN_LIBRARIES_DIR}")
message(STATUS "gfortran include path dir: ${GFORTRAN_INCLUDE_DIR}")
unset(GFORTRAN_LIB_DIR_STR)
# There are lots of other build options for gcc & gfortran. For now, the
# options implemented above should cover a lot of common use cases.
# Clean up be deleting the output string from "gfortran -v"
unset(GFORTRAN_VERBOSE_STR)
# Find paths for libgfortran, libquadmath, libgomp
# libgomp needed for OpenMP support without Clang
find_library(LIBGFORTRAN_LIBRARIES NAMES gfortran libgfortran
HINTS ${GFORTRAN_LIBRARIES_DIR})
find_library(LIBQUADMATH_LIBRARIES NAMES quadmath libquadmath
HINTS ${GFORTRAN_LIBRARIES_DIR})
find_library(LIBGOMP_LIBRARIES NAMES gomp libgomp
HINTS ${GFORTRAN_LIBRARIES_DIR})
# Find OpenMP headers
find_path(LIBGOMP_INCLUDE_DIR NAMES omp.h HINTS ${GFORTRAN_INCLUDE_DIR})
else()
message(STATUS "CMAKE_Fortran_COMPILER_ID does not match 'GNU'!")
endif()
include(FindPackageHandleStandardArgs)
# Required: libgfortran, libquadmath, path for gfortran libraries
# Optional: libgomp, path for OpenMP headers, path for gcc/gfortran headers
find_package_handle_standard_args(GFortranLibs
REQUIRED_VARS LIBGFORTRAN_LIBRARIES LIBQUADMATH_LIBRARIES GFORTRAN_LIBRARIES_DIR
VERSION_VAR GFORTRAN_VERSION_STRING)
if(GFORTRANLIBS_FOUND)
message(STATUS "Looking for gfortran libraries -- found")
message(STATUS "gfortran version: ${GFORTRAN_VERSION_STRING}")
else()
message(STATUS "Looking for gfortran libraries -- not found")
endif()
mark_as_advanced(LIBGFORTRAN_LIBRARIES LIBQUADMATH_LIBRARIES
LIBGOMP_LIBRARIES LIBGOMP_INCLUDE_DIR
GFORTRAN_LIBRARIES_DIR GFORTRAN_INCLUDE_DIR)
# FindGFortranLIBS.cmake ends here