Contents
Installed Programs:
efisecdb and efivar
Installed Libraries:
libefiboot.so, libefisec.so, and libefivar.so
Installed Directories:
/usr/include/efivar
efivar-38
Introduction to efivar
The efivar package provides tools and libraries to manipulate EFI variables.
![[Note]](../images/note.png)
Note
Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.
Package Information
Download (HTTP): https://github.com/rhboot/efivar/releases/download/38/efivar-38.tar.bz2
Download MD5 sum: 243fdbc48440212695cb9c6e6fd0f44f
Download size: 316 KB
Estimated disk space required: 18 MB
Estimated build time: less than 0.1 SBU
Additional Downloads
Optional patch (Required for 32-bit systems): https://www.linuxfromscratch.org/patches/blfs/svn/efivar-38-i686-1.patch
efivar Dependencies
Required
Installation of efivar
First, fix an issue in Makefile causing the package to be rebuilt during installation:
sed '/prep :/a\\ttouch prep' -i src/Makefile
Note
This package cannot function properly on a 32-bit system with a 64-bit UEFI implementation. Don't install this package (or efibootmgr) on 32-bit system unless you are absolutely sure you have a 32-bit UEFI implementation, which is very rare in practice.
If building this package on a 32-bit system, apply a patch:
[ $(getconf LONG_BIT) = 64 ] || patch -Np1 -i ../efivar-38-i686-1.patch
Build efivar with the following commands:
make ERRORS=
The test suite of this package is dangerous. Running it may trigger firmware bugs and make your system unusable without using some special hardware to reprogram the firmware.
Now, as the root user:
make install LIBDIR=/usr/lib
Command Explanations
ERRORS=:
This option overrides the -Werror passed to GCC
by default, so the package won't fail to build with the
-Wenum-int-mismatch warning introduced in GCC 13.
LIBDIR=/usr/lib:
This option overrides the default library directory of the package
(/usr/lib64, which is not used
by LFS.)