pgsql: MSVC 2012+: Permit linking to 32-bit, MinGW-built libraries.

MSVC 2012+: Permit linking to 32-bit, MinGW-built libraries.

Notably, this permits linking to the 32-bit Perl binaries advertised on
perl.org, namely Strawberry Perl and ActivePerl. This has a side effect
of permitting linking to binaries built with obsolete MSVC versions.

By default, MSVC 2012 and later require a "safe exception handler table"
in each binary. MinGW-built, 32-bit DLLs lack the relevant exception
handler metadata, so linking to them failed with error LNK2026. Restore
the semantics of MSVC 2010, which omits the table from a given binary if
some linker input lacks metadata. This has no effect on 64-bit builds
or on MSVC 2010 and earlier. Back-patch to 9.3 (all supported
versions).

Reported by Victor Wagner.

Discussion: https://postgr.es/m/20160326154321.7754ab8f@wagner.wagner.home

Branch
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REL9_6_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/055532badd16b01f54951559139cb664c456cb8f

Modified Files
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src/tools/msvc/MSBuildProject.pm | 2 ++
1 file changed, 2 insertions(+)