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#
#//===----------------------------------------------------------------------===//
#//
#// The LLVM Compiler Infrastructure
#//
#// This file is dual licensed under the MIT and the University of Illinois Open
#// Source Licenses. See LICENSE.txt for details.
#//
#//===----------------------------------------------------------------------===//
#
# This file holds the common flags independent of compiler
# The flag types are:
# 1) Assembly flags (append_asm_flags_common)
# 2) C/C++ Compiler flags (append_c_and_cxx_flags_common)
# 3) Fortran Compiler flags (append_fort_flags_common)
# 4) Linker flags (append_linker_flags_common)
# 5) Archiver flags (append_archiver_flags_common)
# These append_* macros all append to the corresponding list variable holding the flags.
macro(append_c_flags new_flag)
list(APPEND local_c_flags "${new_flag}")
endmacro()
macro(append_cxx_flags new_flag)
list(APPEND local_cxx_flags "${new_flag}")
endmacro()
macro(append_c_and_cxx_flags new_flag)
append_c_flags("${new_flag}")
append_cxx_flags("${new_flag}")
endmacro()
macro(append_asm_flags new_flag)
list(APPEND local_asm_flags "${new_flag}")
endmacro()
macro(append_fort_flags new_flag)
list(APPEND local_fort_flags "${new_flag}")
endmacro()
# The difference between linker_flags and linker_flags_libs is linker_flags_libs
# is put at the end of the linker command where linking libraries should be done.
macro(append_linker_flags new_flag)
list(APPEND local_ld_flags "${new_flag}")
endmacro()
macro(append_linker_flags_library new_flag)
list(APPEND local_ld_flags_libs "${new_flag}")
endmacro()
macro(append_archiver_flags new_flag)
list(APPEND local_ar_flags "${new_flag}")
endmacro()
#########################################################
# Global Assembly flags
function(append_asm_flags_common input_asm_flags)
set(local_asm_flags)
set(${input_asm_flags} "${${input_asm_flags}}" "${local_asm_flags}" "${USER_ASM_FLAGS}" PARENT_SCOPE)
endfunction()
#########################################################
# Global C/C++ Compiler flags
function(append_c_and_cxx_flags_common input_c_flags input_cxx_flags)
set(local_c_flags)
set(local_cxx_flags)
set(${input_c_flags} "${${input_c_flags}}" "${local_c_flags}" "${USER_C_FLAGS}" PARENT_SCOPE)
set(${input_cxx_flags} "${${input_cxx_flags}}" "${local_cxx_flags}" "${USER_CXX_FLAGS}" PARENT_SCOPE)
endfunction()
#########################################################
# Global Fortran Compiler flags (for creating .mod files)
function(append_fort_flags_common input_fort_flags)
set(local_fort_flags)
set(${input_fort_flags} "${${input_fort_flags}}" "${local_fort_flags}" "${USER_F_FLAGS}" PARENT_SCOPE)
endfunction()
#########################################################
# Linker flags
function(append_linker_flags_common input_ld_flags input_ld_flags_libs)
set(local_ld_flags)
set(local_ld_flags_libs)
if(${USE_PREDEFINED_LINKER_FLAGS})
#################################
# Windows linker flags
if(${WINDOWS})
##################
# MAC linker flags
elseif(${MAC})
append_linker_flags("-single_module")
append_linker_flags("-current_version ${version}.0")
append_linker_flags("-compatibility_version ${version}.0")
#####################################################################################
# Intel(R) Many Integrated Core Architecture (Intel(R) MIC Architecture) linker flags
elseif(${MIC})
append_linker_flags("-Wl,-x")
append_linker_flags("-Wl,--warn-shared-textrel") # Warn if the linker adds a DT_TEXTREL to a shared object.
append_linker_flags("-Wl,--as-needed")
append_linker_flags("-Wl,--version-script=${src_dir}/exports_so.txt") # Use exports_so.txt as version script to create versioned symbols for ELF libraries
if(NOT ${STUBS_LIBRARY})
append_linker_flags_library("-pthread") # link in pthread library
append_linker_flags_library("-ldl") # link in libdl (dynamic loader library)
endif()
if(${STATS_GATHERING})
append_linker_flags_library("-Wl,-lstdc++") # link in standard c++ library (stats-gathering needs it)
endif()
#########################
# Unix based linker flags
else()
# For now, always include --version-script flag on Unix systems.
append_linker_flags("-Wl,--version-script=${src_dir}/exports_so.txt") # Use exports_so.txt as version script to create versioned symbols for ELF libraries
append_linker_flags("-Wl,-z,noexecstack") # Marks the object as not requiring executable stack.
append_linker_flags("-Wl,--as-needed") # Only adds library dependencies as they are needed. (if libiomp5 actually uses a function from the library, then add it)
if(NOT ${STUBS_LIBRARY})
append_linker_flags("-Wl,--warn-shared-textrel") # Warn if the linker adds a DT_TEXTREL to a shared object.
append_linker_flags("-Wl,-fini=__kmp_internal_end_fini") # When creating an ELF executable or shared object, call NAME when the
# executable or shared object is unloaded, by setting DT_FINI to the
# address of the function. By default, the linker uses "_fini" as the function to call.
append_linker_flags_library("-pthread") # link pthread library
if(NOT ${FREEBSD})
append_linker_flags_library("-Wl,-ldl") # link in libdl (dynamic loader library)
endif()
endif()
endif() # if(${OPERATING_SYSTEM}) ...
endif() # USE_PREDEFINED_LINKER_FLAGS
set(${input_ld_flags} "${${input_ld_flags}}" "${local_ld_flags}" "${USER_LD_FLAGS}" PARENT_SCOPE)
set(${input_ld_flags_libs} "${${input_ld_flags_libs}}" "${local_ld_flags_libs}" "${USER_LD_LIB_FLAGS}" PARENT_SCOPE)
endfunction()
#########################################################
# Archiver Flags
function(append_archiver_flags_common input_ar_flags)
set(local_ar_flags)
set(${input_ar_flags} "${${input_ar_flags}}" "${local_ar_flags}" PARENT_SCOPE)
endfunction()
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