gcc/g++ compiler in LFS

Anand Arumugam anand.arumug at gmail.com
Thu Nov 11 06:32:24 PST 2010


Hello All,

I just completed the installation of all the tools specified in chapter 5 of
LFS v6.7.

While installing file-5.04 after gcc pass-2, I noticed the presence of
i686-pc-linux-gnu folder when I ran .configure. I checked the
/mnt/lfs/tools/ folder and found this:

$ ls -l /mnt/lfs/tools/
total 40
drwxr-xr-x  2 lfs lfs 4096 Nov  9 20:22 bin
drwxr-xr-x  2 lfs lfs 4096 Nov  7 19:06 etc
*drwxr-xr-x  4 lfs lfs 4096 Nov  7 17:14 i686-lfs-linux-gnu
drwxr-xr-x  4 lfs lfs 4096 Nov  7 19:36 i686-pc-linux-gnu
*drwxr-xr-x 32 lfs lfs 4096 Nov  9 20:22 include
drwxr-xr-x  7 lfs lfs 4096 Nov  9 20:22 lib
drwxr-xr-x  4 lfs lfs 4096 Nov  7 19:06 libexec
drwxr-xr-x  7 lfs lfs 4096 Nov  9 20:22 man
drwxr-xr-x  2 lfs lfs 4096 Nov  7 19:06 sbin
drwxr-xr-x 11 lfs lfs 4096 Nov  9 20:22 share

I was of the impression that there should be no reference to '*
i686-pc-linux-gnu*'. The config.guess script which I ran to find out the
guessed name returned '*i686-lfs-linux-gnu*'. Both these folders have the
same contents.

./configure for file-5.04 gave the following output:

checking whether the gcc linker (/mnt/lfs/tools/i686-pc-linux-gnu/bin/ld)
supports shared libraries... yes
checking for ld used by g++... /mnt/lfs/tools/i686-pc-linux-gnu/bin/ld
checking if the linker (/mnt/lfs/tools/i686-pc-linux-gnu/bin/ld) is GNU
ld... yes
checking whether the g++ linker (/mnt/lfs/tools/i686-pc-linux-gnu/bin/ld)
supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC
checking if g++ PIC flag -fPIC works... yes
checking if g++ static flag -static works... yes
checking if g++ supports -c -o file.o... yes
checking whether the g++ linker (/mnt/lfs/tools/i686-pc-linux-gnu/bin/ld)
supports shared libraries... yes

Does this mean I have to redo everything from "Adjusting the tool chain"
step?

Also in /mnt/lfs/tools/bin folder, I find

-rwxr-xr-x 1 lfs lfs 2725723 Nov  7 17:14 i686-lfs-linux-gnu-addr2line
-rwxr-xr-x 2 lfs lfs 2856241 Nov  7 17:14 i686-lfs-linux-gnu-ar
-rwxr-xr-x 2 lfs lfs 4035121 Nov  7 17:14 i686-lfs-linux-gnu-as
-rwxr-xr-x 1 lfs lfs 2703498 Nov  7 17:14 i686-lfs-linux-gnu-c++filt
-rwxr-xr-x 1 lfs lfs  488288 Nov  7 17:56 i686-lfs-linux-gnu-cpp
-rwxr-xr-x 2 lfs lfs  485385 Nov  7 17:56 i686-lfs-linux-gnu-gcc
-rwxr-xr-x 2 lfs lfs  485385 Nov  7 17:56 i686-lfs-linux-gnu-gcc-4.5.1
-rwxr-xr-x 1 lfs lfs   16119 Nov  7 17:56 i686-lfs-linux-gnu-gccbug
-rwxr-xr-x 1 lfs lfs   85427 Nov  7 17:56 i686-lfs-linux-gnu-gcov
-rwxr-xr-x 1 lfs lfs 3109651 Nov  7 17:14 i686-lfs-linux-gnu-gprof
-rwxr-xr-x 2 lfs lfs 3641292 Nov  7 17:14 i686-lfs-linux-gnu-ld
-rwxr-xr-x 2 lfs lfs 2759384 Nov  7 17:14 i686-lfs-linux-gnu-nm
-rwxr-xr-x 2 lfs lfs 3294785 Nov  7 17:14 i686-lfs-linux-gnu-objcopy
-rwxr-xr-x 2 lfs lfs 3748901 Nov  7 17:14 i686-lfs-linux-gnu-objdump
-rwxr-xr-x 2 lfs lfs 2856272 Nov  7 17:14 i686-lfs-linux-gnu-ranlib
-rwxr-xr-x 1 lfs lfs  577126 Nov  7 17:14 i686-lfs-linux-gnu-readelf
-rwxr-xr-x 1 lfs lfs 2752088 Nov  7 17:14 i686-lfs-linux-gnu-size
-rwxr-xr-x 1 lfs lfs 2728516 Nov  7 17:14 i686-lfs-linux-gnu-strings
-rwxr-xr-x 2 lfs lfs 3294776 Nov  7 17:14 i686-lfs-linux-gnu-strip
* -rwxr-xr-x 4 lfs lfs  570947 Nov  7 20:39 i686-pc-linux-gnu-c++
-rwxr-xr-x 4 lfs lfs  570947 Nov  7 20:39 i686-pc-linux-gnu-g++
-rwxr-xr-x 3 lfs lfs  565980 Nov  7 20:39 i686-pc-linux-gnu-gcc
-rwxr-xr-x 3 lfs lfs  565980 Nov  7 20:39 i686-pc-linux-gnu-gcc-4.5.1
*
Can some one help me figure out why the compilers gcc and g++ are prefixed
with i686-pc-linux-gnu and not i686-lfs-linux-gnu?

Thanks for your time.

Cheers,
Anand.
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