On Wednesday 18 July 2012, Yngve Inntjore Levinsen wrote: > Hi Romain, > > Have a look at the help for the function set: > $ cmake --help-command set > > If I understand the documentation, this should be what you are looking for: > set(MY_VAR NEW_VALUE FORCE)
I don't think this does what you want. It sets MY_VAR to "NEW_VALUE;FORCE". set() without CACHE always sets/overrides anything set before. The only time when you may need to enforce overriding is when the variable in question is a cache variable. set(MY_VAR "foo" CACHE STRING "docs...") set(MY_VAR "bar" CACHE STRING "docs...") will leave MY_VAR at "foo", since setting a value in the cache only actually sets its value if it is not yet in the cache. To set it anyway, you have to use FORCE: set(MY_VAR "foo" CACHE STRING "docs...") set(MY_VAR "bar" CACHE STRING "docs..." FORCE) Using CACHE and non-CACHE variables with the same name may result in not quite obvious behaviour. Alex
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