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#=============================================================================
# Copyright 2002-2011 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 distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# This module is shared by multiple languages; use include blocker.
if(__COMPILER_XL)
return()
endif()
set(__COMPILER_XL 1)
# Find the CreateExportList program that comes with this toolchain.
find_program(CMAKE_XL_CreateExportList
NAMES CreateExportList
DOC "IBM XL CreateExportList tool"
)
macro(__compiler_xl lang)
# Feature flags.
set(CMAKE_${lang}_VERBOSE_FLAG "-V")
set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-qpic")
string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g")
string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O")
string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -O")
string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -g")
set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
# CMAKE_XL_CreateExportList is part of the AIX XL compilers but not the linux ones.
# If we found the tool, we'll use it to create exports, otherwise stick with the regular
# create shared library compile line.
if (CMAKE_XL_CreateExportList)
# The compiler front-end passes all object files, archive files, and shared
# library files named on the command line to CreateExportList to create a
# list of all symbols to be exported from the shared library. This causes
# all archive members to be copied into the shared library whether they are
# needed or not. Instead we run the tool ourselves to pass only the object
# files so that we export only the symbols actually provided by the sources.
set(CMAKE_${lang}_CREATE_SHARED_LIBRARY
"${CMAKE_XL_CreateExportList} <OBJECT_DIR>/objects.exp <OBJECTS>"
"<CMAKE_${lang}_COMPILER> <CMAKE_SHARED_LIBRARY_${lang}_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS> -Wl,-bE:<OBJECT_DIR>/objects.exp <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
)
endif()
endmacro()
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