Did you also add the library class to your INF file [LibraryClasses] section?
From: John Davis [mailto:davi...@gmail.com]
Sent: Tuesday, February 25, 2014 4:50 PM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] DevicePathToStr
That fails as well.
Creating library
c:\fw\edk2\Build\NT32IA32\DEBUG_VS2010x86\IA32\MdeModulePkg\Application\MyFindRom\MyFindRom\DEBUG\MyFindRom.lib
and object c:\fw\edk2\Build\NT32IA32\DEBUG_VS201
0x86\IA32\MdeModulePkg\Application\MyFindRom\MyFindRom\DEBUG\MyFindRom.exp
MyFindRom.lib(MyFindRom.obj) : error LNK2001: unresolved external symbol
_DevicePathToStr
c:\fw\edk2\Build\NT32IA32\DEBUG_VS2010x86\IA32\MdeModulePkg\Application\MyFindRom\MyFindRom\DEBUG\MyFindRom.dll
: fatal error LNK1120: 1 unresolved externals
NAMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio
10.0\Vc\bin\link.exe"' : return code '0x460'
utoGen.c
Stop.
#include <Uefi.h>
#include <PiPei.h>
#include <Pi/PiFirmwareFile.h>
#include <Library/DebugLib.h> // ASSERT_EFI_ERROR
#include <Protocol/LoadedImage.h> // EFI_LOADED_IMAGE_PROTOCOL
#include <Pi/PiFirmwareVolume.h>
#include <Library/PcdLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiApplicationEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Protocol/FirmwareVolume.h>
#include <Library/GenericBdsLib.h> // DevicePathToStr
On Tue, Feb 25, 2014 at 4:43 PM, Carsey, Jaben
<jaben.car...@intel.com<mailto:jaben.car...@intel.com>> wrote:
Depending on what you are doing with the resultant string
ConvertDevicePathToText from DevicePathLib (header file located in MdePkg) is a
much more common method to convert a device path to a text. This also supports
some options on some conversion results.
-Jaben
-----Original Message-----
From: Bill Paul [mailto:wp...@windriver.com<mailto:wp...@windriver.com>]
Sent: Tuesday, February 25, 2014 4:24 PM
To: edk2-devel@lists.sourceforge.net<mailto:edk2-devel@lists.sourceforge.net>
Subject: Re: [edk2] DevicePathToStr
Of all the gin joints in all the towns in all the world, John Davis had to walk
into mine at 16:10:15 on Tuesday 25 February 2014 and say:
> Hello
>
> I see some code which uses DevicePathToStr. When I do a grep on it, I
> see it a few include files.
>
> 1. IntelFrameworkModulePkg
> 2. OvmfPkg
> 3. SecruityPkg
>
> I am working with the NT32 emulator so I'm guessing that I don't need
> the ones from source 2 and 3. However, when I try to include the
> header file for
> #include <Library/GenericBdsLib.h> // DevicePathToStr from the
> IntelFrameworkModulePkg it fails to compile.
>
> I also noticed that there is a .c file in MdeModulePkg
> (PlatDriOverrideDxe.c) which uses this routine. I was thinking that
> maybe there is some other way to get access to it, but I don't know. I
> don't see it any other header files.
>
> Any advice on how to use this routine?
I'm not certain this is the right way to do it, but what I did was to edit my
.inf file and add the following line under the [Packages] section:
IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
Then I was able to include <Library/GenericBdsLib.h> in my code and use
DevicePathToStr() without any issue.
-Bill
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