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include(CheckSymbolExists)
include(CheckIncludeFiles)
# Check if each symbol in the symbol list exists,
# and define PREFIX__HAVE_SYMNAME to 1 if yes.
#
# SYMLIST: list of symbols to check
# HEADERS: header files to be included in check code
# PREFIX: the prefix of definition
macro(CHECK_SYMBOLS_EXIST SYMLIST HEADERS PREFIX)
foreach(SYMNAME ${SYMLIST})
string(TOUPPER "${SYMNAME}" SYMNAME_UPPER)
if ("${PREFIX}" STREQUAL "")
set(HAVE_SYM_DEF "HAVE_${SYMNAME_UPPER}")
else()
set(HAVE_SYM_DEF "${PREFIX}__HAVE_${SYMNAME_UPPER}")
endif()
CHECK_SYMBOL_EXISTS(${SYMNAME} "${HEADERS}" ${HAVE_SYM_DEF})
endforeach()
endmacro()
# Check if file exists, define PREFIX__HAVE_FILE to 1 if yes,
# and collect file to EVENT_INCLUDES
macro(CHECK_INCLUDE_FILE_CONCAT FILE PREFIX)
string(REGEX REPLACE "[./]" "_" FILE_UL ${FILE})
string(TOUPPER "${FILE_UL}" FILE_UL_UPPER)
if ("${PREFIX}" STREQUAL "")
set(HAVE_FILE_DEF "HAVE_${FILE_UL_UPPER}")
else()
set(HAVE_FILE_DEF "${PREFIX}__HAVE_${FILE_UL_UPPER}")
endif()
CHECK_INCLUDE_FILES("${EVENT_INCLUDES};${FILE}" ${HAVE_FILE_DEF})
if(${HAVE_FILE_DEF})
set(EVENT_INCLUDES ${EVENT_INCLUDES} ${FILE})
endif()
endmacro()
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