Michael Jackson schrieb: > > On Feb 20, 2009, at 4:59 AM, Eric Noulard wrote: > >> 2009/2/20 Christian Ehrlicher <ch.ehrlic...@gmx.de>: >>>> Von: Andreas Pokorny >>>> Hello, >>>> Wow that was fast. Thanks a lot. >> >> Obviously I was too fast reading the doc :-) >> >>>>> [...] >>>>> >>>>> SET_TARGET_PROPERTIES(PlatformLib PROPERTIES >>>>> DEFINE_SYMBOL USE_TRACER) >>>>> >>>>> Then you shouldn't have to ADD_DEFINITIONS and REMOVE_DEFINITIONS? >>>> >>>> >>>> I do not understand why.. but DEFINE_SYMBOL did not work, but >>>> COMPILE_FLAGS -DUSE_TRACER >>>> did. So SET_TARGET_PROPERTIES is the sledgehammer for getting it >>>> done :) >>>> >>> DEFINE_SYMBOL only works for shared libraries. see cmake >>> documentation: "DEFINE_SYMBOL sets the name of the preprocessor >>> symbol defined when compiling sources in a shared library." >> >> Thank you Christian >> ...for reading the doc more carefully than I do :-) >> >> >> -- >> Erk >> > > and I _think_ that DEFINE_SYMBOL only will work on windows as it is > there to facilitate the dllImport/dllexport functionality used by > windows for exporting/importing symbols from shared libraries. > > I may be wrong on that as I am going on memory at this point. > This is wrong - you've a similar option with gcc - the visibility attribute.
Christian
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