The GRUB package provides GRand Unified Bootloader. In this page it will be built with UEFI support, which is not enabled for GRUB built in LFS.
Section 9.33, “efibootmgr-18” (runtime)
Section 9.31, “FreeType-2.14.2”, Section 9.30, “Fuse-3.18.1”, and Section 9.29, “LVM2-2.03.38”
If you are building GRUB for a 32-bit LFS system to boot it on a
64-bit UEFI firmware, rebuild "gcc" with the --enable-targets=all switch appended
to the ../configure
command.
First, install font data if you've downloaded it and you've installed the optional dependency "freetype2":
mkdir -pv /usr/share/fonts/unifont && zcat ../unifont-17.0.01.pcf.gz > /usr/share/fonts/unifont/unifont.pcf
![[Warning]](../images/warning.png)
Unset any environment variables which may affect the build:
unset {C,CPP,CXX,LD}FLAGS
Don't try “tuning” this package with custom compilation flags: this package is a bootloader, with low-level operations in the source code which is likely to be broken by some aggressive optimizations.
Build GRUB with the following commands:
./configure --prefix=/usr \
--sysconfdir=/etc \
--disable-efiemu \
--with-platform=efi \
--target=aarch64 \
--disable-werror
make
This package does not have a test suite providing meaningful results.
Now, if you've skipped the Chaper 8 GRUB package, install GRUB and skip the remaining instructions in this section:
make install mv -v /etc/bash_completion.d/grub /usr/share/bash-completion/completions
If you did NOT skip Section 10.4, “Using GRUB to Set Up the Boot Process” GRUB package, only install the components not installed from the Chapter 8 GRUB package instead:
make -C grub-core install
If you've installed the optional font data and Section 9.31, “FreeType-2.14.2”, install the grub-mkfont program and the font data files (without the font data files GRUB can still function normally, but the boot menu will be displayed using a coarse font or in a smaller region on the screen).
install -vm755 grub-mkfont /usr/bin/ install -vm644 ascii.h widthspec.h *.pf2 /usr/share/grub/
If both Section 9.30, “Fuse-3.18.1” and Section 9.29, “LVM2-2.03.38” are installed, also install the grub-mount program:
install -vm755 grub-mount /usr/bin/
--with-platform=efi:
Ensures building GRUB with EFI enabled.
--target=aarch64: Ensures
building GRUB for arm64 even if building on a 32-bit LFS system.
Most EFI firmware on arm64 does not support 32-bit bootloaders.
Using GRUB to make the LFS system bootable on UEFI platform will be discussed in Using GRUB to Set Up the Boot Process with UEFI.
A list of the installed files, along with their short descriptions can be found at Section 10.4, “Using GRUB to Set Up the Boot Process”.
Listed below are the newly installed programs along with short descriptions.