Building GCC for LFS

dbbolton · 11-26-2009, 02:29 PM

I am currently on chapter 5.5 of LFS, the first GCC pass. I ran the configure script as follows:

Code:

./configure --target=$LFS_TGT --prefix=/tools --disable-nls --disable-shared --disable-multilib --disable-decimal-float --disable-threads --disable-libmudflap --disable-libssp --disable-libgomp --enable-languages=c

Then I got this error from make:

Code:

make[2]: Leaving directory `/mnt/lfs/gcc-build/gcc-4.4.2/host-x86_64-unknown-linux-gnu/mpfr'                                                                    
make[2]: Entering directory `/mnt/lfs/gcc-build/gcc-4.4.2/host-x86_64-unknown-linux-gnu/mpfr'                                                                   
make[2]: *** No rule to make target `@MAINTAINER_MODE_TRUE@', needed by `../.././mpfr/Makefile.in'.  Stop.                                                      
make[2]: Leaving directory `/mnt/lfs/gcc-build/gcc-4.4.2/host-x86_64-unknown-linux-gnu/mpfr'                                                                    
make[1]: *** [all-mpfr] Error 2                                                 
make[1]: Leaving directory `/mnt/lfs/gcc-build/gcc-4.4.2'                       
make: *** [all] Error 2

I tried googling the error but I couldn't find this specific problem.

knudfl · 11-26-2009, 02:51 PM

Welcome to LQ.

And which version of LFS ?
http://www.linuxfromscratch.org/lfs/...skforhelp.html
..the essential things to include in any request for help are
..The version of the book being used ..
( § 1.5.1. )

dbbolton · 11-26-2009, 02:59 PM

Thanks for the reply.

- development version of LFS
- Debian testing (with only a few packages from unstable)

Code:

./version-check.sh                                               
bash, version 4.0.28(1)-release                                                 
/bin/sh -> /bin/dash
Binutils: (GNU Binutils for Debian) 2.20
./version-check.sh: line 9: bison: command not found
yacc not found
bzip2,  Version 1.0.5, 10-Dec-2007.
Coreutils:  7.4
diff (GNU diffutils) 2.8.1
find (GNU findutils) 4.4.2
GNU Awk 3.1.6
/usr/bin/awk -> /usr/bin/gawk
gcc (Debian 4.3.4-6) 4.3.4
GNU C Library (EGLIBC) stable release version
GNU grep 2.5.4
gzip 1.3.12
Linux version 2.6.31-dbb-deb (2.6.31) (root@ganymed) (gcc version 4.3.4 (Debian 4.3.4-5) ) #1 SMP PREEMPT Tue Oct 27 02:39:01 EDT 2009
m4 (GNU M4) 1.4.13
GNU Make 3.81
patch 2.5.9
Perl version='5.10.1';
GNU sed version 4.2.1
tar (GNU tar) 1.22
makeinfo (GNU texinfo) 4.13
Compilation OK

I didn't intentionally deviate from the book, but it's possible that I messed up somewhere.

knudfl · 11-26-2009, 03:44 PM

I think you need a build directory outside gcc-4.4.2/

Quote:

The GCC documentation recommends building GCC outside
of the source directory in a dedicated build directory

Hence this configure line : ../gcc-4.4.2/configure..............

The recommandation can be read as it isn't important,
but not doing it will cause problems.

The same goes for binutils, better start from scratch again.
.....

Seems you are missing 'bison' on your Debian ?
.....

dbbolton · 11-26-2009, 03:58 PM

I thought I set up the build directories correctly:

Code:

lfs@ganymed:~$ cd $LFS

lfs@ganymed:/mnt/lfs$ ls
binutils-build  gcc-build  sources  tools

lfs@ganymed:/mnt/lfs$ ls binutils-build/
binutils-2.20  binutils-2.20.tar.bz2

lfs@ganymed:/mnt/lfs$ ls gcc-build/
gcc-4.4.2  gcc-4.4.2.tar.bz2

I just installed bison 2.4.1.dfsg-3.

10110111 · 11-26-2009, 05:09 PM

Quote:

lfs@ganymed:/mnt/lfs$ ls gcc-build/
gcc-4.4.2 gcc-4.4.2.tar.bz2

This is incorrect.

You should read this page first: http://www.linuxfromscratch.org/lfs/...roduction.html
For some reason this very important notice was eliminated after LFS 6.3. I couldn't find it in development version of LFS, though it used to be in 6.3:

Quote:

Important
Before issuing the build instructions for a package, the package should be unpacked as user lfs, and a cd into the created directory should be performed. The build instructions assume that the bash shell is in use.

This means that

Code:

mkdir -v ../gcc-build
cd ../gcc-build

commands as well as previous ones on the page should be done in the gcc-4.4.2 directory.
You have to start building from scratch.

knudfl · 11-26-2009, 05:12 PM

It's just that your configure line looks wrong.

cd gcc-build/

and then do

../gcc-4.4.2/configure.....

and do not do

./configure.....

.....

dbbolton · 11-26-2009, 05:48 PM

So, if I understand correctly, I must create an empty directory, change to that empty directory, and then execute configure from within that directory.

10110111 · 11-26-2009, 06:20 PM

Yes. Just follow the book. After you extracted the package and made cd to its directory you can execute the commands from the page about that package and, ideally, no extra commands should be needed.

JohnGraham · 11-27-2009, 03:35 AM

Quote:

Originally Posted by dbbolton

So, if I understand correctly, I must create an empty directory, change to that empty directory, and then execute configure from within that directory.

Yes - also, the second directory (i.e. the one you change to in order to run the configure script) should not be a subdirectory of the source directory.