From 22d8ff63f5b740eae7c502ba520151c14b0252ab Mon Sep 17 00:00:00 2001 From: Ralf Habacker Date: Thu, 12 Jan 2023 12:28:35 +0100 Subject: Help: add notes for POSIX platforms to the DEFINE_SYMBOL target property Fixes #24310 --- Help/prop_tgt/DEFINE_SYMBOL.rst | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/Help/prop_tgt/DEFINE_SYMBOL.rst b/Help/prop_tgt/DEFINE_SYMBOL.rst index eb7f937..775cf89 100644 --- a/Help/prop_tgt/DEFINE_SYMBOL.rst +++ b/Help/prop_tgt/DEFINE_SYMBOL.rst @@ -8,4 +8,10 @@ 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. +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. -- cgit v0.12