Currently, StdLib is only for building applications which run under the Shell.
StdLib also constructs an environment, as specified by ISO/IEC 9899:199409 (the
C Language Specification), to support the signal(), abort(), exit handlers, and
environment variables (NOT EFI variables). Currently, this environment is
monolithic and, even though dynamically generated, a bit too large for drivers.
A version suitable for writing device drivers as well as OS loaders should be
available later this year.
Please examine the ReadMe.txt files in StdLib and AppPkg. Also, the AppPkg.dsc
file and StdLib.dsc files are intended to be used as examples that can be
copied to become the basis of new projects. There are numerous comments
pertaining to use with StdLib in them. The applications in AppPkg are examples
of several types of applications with varying complexity.
Daryl McDaniel
From: David F. [mailto:df7...@gmail.com]
Sent: Friday, February 01, 2013 4:02 PM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] Adding printf via StdLib
Okay, I found some of the examples in AppPkg and got my hello to work by
setting the ENTRY_POINT to ShellCEntryLib and the other stuff below. But then
looking at what ShellCEntryLib does is use a protocol
gEfiShellParametersProtocolGuid which is setup by the Shell when it executes
the application. So does that mean you can only use StdLib through the Shell
or is it simply that the sample apps used the shell to take care of command
line arguments and the rest of StdLib doesn't rely on anything from the shell?
The Other Stuff mentioned above:
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
ShellPkg/ShellPkg.dec
[LibraryClasses]
LibC
LibStdio
DevShell
On Fri, Feb 1, 2013 at 11:06 AM, Andrew Fish
<af...@apple.com<mailto:af...@apple.com>> wrote:
On Feb 1, 2013, at 10:46 AM, "David F."
<df7...@gmail.com<mailto:df7...@gmail.com>> wrote:
Is that an optional thing some packages may include, some type of .inc file?
Anyway, did that and that leads to:
Yes that .inc is just connivence, and not common.
c:\edk2\testpkg\testpkg.dsc(...): error 4000: Instance of library class
[HiiLib] is not found
in [c:\edk2\ShellPkg\Library\UefiShellLib\UefiShellLib.inf] [X64]
consumed by module [c:\edk2\testpkg\hello\hello.inf]
But I didn't see any .inc file in the EdkCompatibilityPkg folder which is the
only place I found HiiLib via:
Don't use the EdkCompatiblityPkg it is for backwards compatibility with EDK
code, not new code.
C:\edk2>dir hiilib /s
Volume in drive C is Windows 7
Volume Serial Number is 5233-4330
Directory of
C:\edk2\EdkCompatibilityPkg\Foundation\Library\EdkIIGlueLib\Library
01/31/2013 06:37 PM <DIR> HiiLib
0 File(s) 0 bytes
You need to search .INF files for a LIBRARY_CLASS = HiiLib statement in the
[Defines] section.
https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf
A library class is a name (HiiLib) that is associated with a public include
file
(https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/MdeModulePkg/Include/Library/HiiLib.h).
There can be a large number of instances of the lib
(https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf).
The instance is the implementation of the lib.
The DSC file maps the library class to the library implementation that you want
to use when you compile your application/driver.
Thanks,
Andrew Fish
On Fri, Feb 1, 2013 at 10:16 AM, Tim Lewis
<tim.le...@insyde.com<mailto:tim.le...@insyde.com>> wrote:
David -
The easiest way is just to put
!include StdLib\StdLib.inc
At the end of your testpkg.dsc
From: David F. [mailto:df7...@gmail.com<mailto:df7...@gmail.com>]
Sent: Friday, February 01, 2013 10:11 AM
To: edk2-devel@lists.sourceforge.net<mailto:edk2-devel@lists.sourceforge.net>
Subject: [edk2] Adding printf via StdLib
Hi,
Still learning the build system - I used the driver wizard to create a new
package and driver, modified to be application, and used the SystemTable to
print out some text. That all worked fine, so my next step is to use printf
instead. So I added Stdio|StdLib/LibC/Stdio/Stdio.inf to the .dsc file and in
the .inf file added StdLib/StdLib.dec under [Packages] and Stdio under
[LibraryClasses], changed code to use printf(L"text"), then tried to build but
it stops with
c:\edk2\testpkg\testpkg.dsc(...): error 4000: Instance of library class [LibC]
is not found
in [c:\edk2\StdLib\LibC\Stdio\Stdio.inf] [X64]
consumed by module [c:\edk2\testpkg\hello\hello.inf]
Do I have to somehow figure out all the different library classes and add them
to the .dsc file, or can't it just find itself??
TIA!!
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