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-rw-r--r--cmake/misc.cmake19
1 files changed, 19 insertions, 0 deletions
diff --git a/cmake/misc.cmake b/cmake/misc.cmake
new file mode 100644
index 00000000..2a0c57b1
--- /dev/null
+++ b/cmake/misc.cmake
@@ -0,0 +1,19 @@
+IF ("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}" VERSION_LESS "2.8.7")
+ FUNCTION(MESSAGE_ONCE id out)
+ MESSAGE(STATUS "${out}")
+ ENDFUNCTION()
+ELSE()
+ FUNCTION(MESSAGE_ONCE id out)
+ STRING(MD5 hash "${out}")
+ IF(NOT __msg1_${id} STREQUAL "${hash}")
+ MESSAGE(STATUS "${out}")
+ ENDIF()
+ SET(__msg1_${id} ${hash} CACHE INTERNAL "")
+ ENDFUNCTION()
+ENDIF()
+
+MACRO(SET_IF_UNSET VAR VAL)
+ IF(NOT DEFINED ${VAR})
+ SET(${VAR} ${VAL})
+ ENDIF()
+ENDMACRO()