# Distributed under the OSI-approved BSD 3-Clause License. See accompanying | |
# file Copyright.txt or https://cmake.org/licensing for details. | |
# 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() |