10.100.1. Installation of Yaboot
Existing multilib distributions alter gcc to default to 32-bit
output. Because our gcc defaults to 64-bit, we need to pass
appropriate options to both the compiler and the linker. To prevent
the build from failing due to compiler warnings, the -Werror flag
is removed. The Makefile already overrides any CC and ignores
LDFLAGS in favour of its own variables, so we need to use the
following seds for a successful compile and install.
sed -i -e "s/\(-print-libgcc-file-name\)/${BUILD32} \1/" \
-e "s/-Werror//" \
-e "s/\(-Bstatic\)/-melf32ppclinux \1/" Makefile
The meaning of the sed parameters:
-
"s/\(-print-libgcc-file-name\)/${BUILD32}
\1/"
-
This picks a convenient place within the Makefile's lgcc
variable and inserts the flag to force gcc to create 32-bit code
when compiling yaboot.
-
"s/-Werror//"
-
This deletes the -Werror flag from the Makefile.
-
"s/\(-Bstatic\)/-melf32ppclinux
\1/"
-
This picks the end of the LFLAGS which the Makefile passes to
the linker to create the second-stage linux loader, and
inserts a flag to force ld to use a suitable 32-bit
emulation picked from the output of 'ld -V'.
The following patch adds stub functions for newer e2fsprogs
releases:
patch -Np1 -i ../yaboot-1.3.17-stubfuncs-1.patch
The following patch adds Parted support to yabootconfig:
patch -Np1 -i ../yaboot-1.3.17-parted-1.patch
The supplied man pages have /usr/local in the text. This sed will correct
that:
sed -i 's%/usr/local%/usr%' man/*
Compile the package:
CFLAGS="${BUILD32}" make PREFIX=/usr
Install the package:
![[Important]](../images/important.png)
Important
The multilib install of yaboot can fail if you miss any of the
patches or seds, or omit the CFLAGS variable. ld will issue warnings, but the
install will appear to complete successfully. That would result
in an unbootable system, so you need to log the output to check
it.
make PREFIX=/usr install 2>&1 | tee instlog
To ensure that the install was successful, run the following
command:
grep 'powerpc:common64' instlog
If the command gave you any
output (... is incompatible with powerpc:common output) the build
of yaboot is broken and you will have to correct your error(s) and
repeat it.