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From: "Ard Biesheuvel" <ard.biesheuvel@linaro.org>
Date: Fri, 17 Apr 2020 10:15:21 +0200
Message-ID: <CAKv+Gu_7K06yw8rjPGUjY=4XFqqtxQwDDdbJcJ4NuWNZPVFxXA@mail.gmail.com>
Subject: Re: [edk2-devel] [PATCH] CryptoPkg/FltUsedLib: Add FltUsedLib for float.
To: "Jiang, Guomin" <guomin.jiang@intel.com>, Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: "devel@edk2.groups.io" <devel@edk2.groups.io>, "Ni, Ray" <ray.ni@intel.com>, 
	"Kinney, Michael D" <michael.d.kinney@intel.com>, "lersek@redhat.com" <lersek@redhat.com>, 
	"macarl@microsoft.com" <macarl@microsoft.com>
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On Tue, 14 Apr 2020 at 09:01, Jiang, Guomin <guomin.jiang@intel.com> wrote:
>
> Summarize current status:
>
> Problem Statement:
> Openssl require _fltused to be defined as a constant anywhere floating po=
int is used.
> It may use float out of edk2 tree and need _fltused, for example, Microso=
ft=E2=80=99s OnScreenKeyboard and UiToolKit.
>
> Current Proposal as below:
>
> Proposal 1: Add FltUsed.c into exist library
> Detail: Add FltUsed.c into EntryPointLib(PEIM, DXE).
> Recommend: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> Approve: Laszlo Ersek lersek@redhat.com
> Netual: Michael D Kinney <michael.d.kinney@intel.com>
> Benefit: Doesn=E2=80=99t need modify every .dsc description file.
> Defection: I test that it will fail because of /GL option, the error show=
 fatal error LNK1237: during code generation, compiler introduced reference=
 to symbol '_fltused' defined in module 'UefiApplicationEntryPoint.lib(FltU=
sed.obj)' compiled with /GL
>

Can you elaborate on this issue? What does /GL do, and why is it
throwing this error?