18 lines
676 B
ReStructuredText
18 lines
676 B
ReStructuredText
DEFINE_SYMBOL
|
|
-------------
|
|
|
|
Define a symbol when compiling this target's sources.
|
|
|
|
``DEFINE_SYMBOL`` sets the name of the preprocessor symbol defined when
|
|
compiling sources in a shared library. If not set here then it is set
|
|
to ``target_EXPORTS`` by default (with some substitutions if the target is
|
|
not a valid C identifier). This is useful for headers to know whether
|
|
they are being included from inside their library or outside to
|
|
properly setup dllexport/dllimport decorations on Windows.
|
|
|
|
On POSIX platforms, this can optionally be used to control the visibility
|
|
of symbols.
|
|
|
|
CMake provides support for such decorations with the :module:`GenerateExportHeader`
|
|
module.
|