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# SPDX-License-Identifier: 0BSD
#############################################################################
#
# tuklib_common.cmake - common functions and macros for tuklib_*.cmake files
#
# Author: Lasse Collin
#
#############################################################################
function(tuklib_add_definitions TARGET_OR_ALL DEFINITIONS)
# DEFINITIONS may be an empty string/list but it's fine here. There is
# no need to quote ${DEFINITIONS} as empty arguments are fine here.
if(TARGET_OR_ALL STREQUAL "ALL")
add_compile_definitions(${DEFINITIONS})
else()
target_compile_definitions("${TARGET_OR_ALL}" PRIVATE ${DEFINITIONS})
endif()
endfunction()
function(tuklib_add_definition_if TARGET_OR_ALL VAR)
if(${VAR})
tuklib_add_definitions("${TARGET_OR_ALL}" "${VAR}")
endif()
endfunction()
# This is an over-simplified version of AC_USE_SYSTEM_EXTENSIONS in Autoconf
# or gl_USE_SYSTEM_EXTENSIONS in gnulib.
macro(tuklib_use_system_extensions TARGET_OR_ALL)
if(NOT WIN32)
# FIXME? The Solaris-specific __EXTENSIONS__ should be conditional
# even on Solaris. See gnulib: git log m4/extensions.m4.
# FIXME? gnulib and autoconf.git has lots of new stuff.
tuklib_add_definitions("${TARGET_OR_ALL}"
_GNU_SOURCE
__EXTENSIONS__
_POSIX_PTHREAD_SEMANTICS
_TANDEM_SOURCE
_ALL_SOURCE
)
list(APPEND CMAKE_REQUIRED_DEFINITIONS
-D_GNU_SOURCE
-D__EXTENSIONS__
-D_POSIX_PTHREAD_SEMANTICS
-D_TANDEM_SOURCE
-D_ALL_SOURCE
)
endif()
endmacro()
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