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win32: only use dllexport when building DLL

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If building a static library, marking symbols as dllexport causes them
to be exported from the final executable. For example, run
objdump -x opus_demo.exe on a --disabled-shared build and look for the
export table; there should not be one in a normal Win32 .exe file, but
when linking static libopus, the exe exports all of the opus_* public
functions.

Use the libtool-defined DLL_EXPORT flag to determine whether we are
building a DLL and only specify __declspec(dllexport) in that case.
This commit is contained in:
Daniel Verkamp 2015-10-21 17:24:41 -07:00 • committed by Ralph Giles
parent 787eee29b8
commit 6e9617371f
1 changed files with 1 additions and 1 deletions
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2
include/opus_defines.h
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@ -65,7 +65,7 @@ extern "C" {
#ifndef OPUS_EXPORT
# if defined(WIN32)
# ifdef OPUS_BUILD
# if defined(OPUS_BUILD) && defined(DLL_EXPORT)
# define OPUS_EXPORT __declspec(dllexport)
# else
# define OPUS_EXPORT