On Saturday 14 January 2012, Thorsten Wagner wrote:
> Hello,
> how can i enforce that a variable will be defined?
what exactly do you mean ?
Do you want to force the user to set some variable explicitely ?
if(NOT DEFINED SOME_VARIABLE)
message(FATAL_ERROR "...")
endif()
or put it with some default value in the cache, and then check that it has
been changed:
set(SOME_VARIABLE "NOTFOUND" CACHE STRING "must be set by the user")
if ("${SOME_VARIABLE}" STREQUAL "NOTFOUND")
message(FATAL_ERROR "...")
endif()
Is that what you want to do ?
Alex
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