Support building a shared php8embed.dll #17480
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So far only static php8embed.lib has been supported on Windows, while on POSIX the choice was up to the user. Now,
--enable-embed=shared
is also supported on Windows.For BC reasons we stick with static as default; the resulting embed library can be used like before. To avoid that snapshot builds now build a shared library, we add an exemption to confutils.js.
To properly support a static and a shared library, respectively, we do the customary
__declspec
dance.