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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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# This module is shared by multiple languages; use include blocker.
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if(__AIX_COMPILER_XL)
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return()
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endif()
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set(__AIX_COMPILER_XL 1)
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#
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# By default, runtime linking is enabled. All shared objects specified on the command line
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# will be listed, even if there are no symbols referenced, in the output file.
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string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT " -Wl,-brtl")
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string(APPEND CMAKE_MODULE_LINKER_FLAGS_INIT " -Wl,-brtl")
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string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " -Wl,-brtl")
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macro(__aix_compiler_xl lang)
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set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG "-Wl,-blibpath:")
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set(CMAKE_SHARED_LIBRARY_RUNTIME_${lang}_FLAG_SEP ":")
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set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-G -Wl,-bnoipath") # -shared
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set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "-Wl,-bexpall")
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set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS " ")
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set(CMAKE_SHARED_MODULE_${lang}_FLAGS " ")
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set(CMAKE_${lang}_LINK_FLAGS "-Wl,-bnoipath")
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# Find the CreateExportList program that comes with this toolchain.
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find_program(CMAKE_XL_CreateExportList
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NAMES CreateExportList
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DOC "IBM XL CreateExportList tool"
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)
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# CMAKE_XL_CreateExportList is part of the AIX XL compilers but not the linux ones.
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# If we found the tool, we'll use it to create exports, otherwise stick with the regular
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# create shared library compile line.
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if (CMAKE_XL_CreateExportList)
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# The compiler front-end passes all object files, archive files, and shared
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# library files named on the command line to CreateExportList to create a
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# list of all symbols to be exported from the shared library. This causes
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# all archive members to be copied into the shared library whether they are
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# needed or not. Instead we run the tool ourselves to pass only the object
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# files so that we export only the symbols actually provided by the sources.
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set(CMAKE_${lang}_CREATE_SHARED_LIBRARY
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"${CMAKE_XL_CreateExportList} <OBJECT_DIR>/objects.exp <OBJECTS>"
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"<CMAKE_${lang}_COMPILER> <CMAKE_SHARED_LIBRARY_${lang}_FLAGS> -Wl,-bE:<OBJECT_DIR>/objects.exp <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS> <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
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)
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endif()
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endmacro()
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