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-rw-r--r--libevent/cmake/Macros.cmake36
1 files changed, 36 insertions, 0 deletions
diff --git a/libevent/cmake/Macros.cmake b/libevent/cmake/Macros.cmake
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index 0000000..e480bbf
--- /dev/null
+++ b/libevent/cmake/Macros.cmake
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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()