On 2018-04-04 00:42, Magnus Ihse Bursie wrote:
On 2018-04-03 23:16, Erik Joelsson wrote:
Looks good to me at least. Exporting symbols from executables seems
wrong so applying hidden as default seems good to me.
Unfortunately, it was not this easy. :-(
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Out of paranoia, I also started a test run on Windows, even though it
should not have been affected. Well, "should not". The added JNIEXPORT
turns into a __declspec(dllexport) on Windows, which causes the
Microsoft linker to behave like when linking a dll, so it creates a
.lib and .exp for each binary, in the bin directory.
*sigh*
I see two ways out of this.
1) Make the JNIEXPORT conditional on OS. Either by #ifdef before the
main function, or by declaring something like EXEC_EXPORT instead, and
let it be empty on Windows.
2) Let the part of SetupNativeCompilation that handles executables
behave more like the one for shared libraries, and setting -implib,
etc. I'm not sure what happens if you pass in -implib when linking an
executable which does *not* have any dllexport decorations. If it
breaks, then this does not really seem like a way forward. Otherwise,
it's probably the safest choice, since it will make sure we never leak
any *.lib or *.exp for a potential future executable.
What do you think?
I really don't know which I would prefer. Would be good to find out what
happens in 2.
/Erik
