Buidling binutils in gcc source directory

Buidling binutils in gcc source directory

[Michael Darling]

I saw that you can build binutils in the gcc source directory.  So, I ran:

git clone git://gcc.gnu.org/git/gcc.git git.git
cd git.git
./contrib/download_prerequisites
clone git://sourceware.org/git/binutils-gdb.git binutils
mkdir ../gcc.build
cd ../gcc.build
../gcc.git/configure --disable-multilib && make -j11

Runs for a few minutes, then errors with:

/bin/sh: line 7:
/home/mdarling/sourceInstallation/gcc.build.gcc.with.binutils/.binutils/ar:
No such file or directory

ln -s /home/mdarling/sourceInstallation/gcc.build.gcc.with.binutils/binutils/binutils/ar
binutils/ar

Then have to

ln -s /home/mdarling/sourceInstallation/gcc.build.gcc.with.binutils/binutils/binutils/ranlib
binutils/ranlib

Then, it errors with:
/home/mdarling/sourceInstallation/gcc.build.gcc.with.binutils/./gcc/nm:
line 106: exec: -p: invalid option

gcc/nm is a 3168 byte shell script, unlike /usr/bin/nm, a 42432 byte executable.

gcc/nm (shell script) has no -p option, not even a --help option.  nm
(/usr/bin executable) has a -p option, visible through --help

So my questions are are:

1. Why is it expecting the binutils binaries to be in
top-source-dir/binutils/ when they are all in
top-source-dir/binutils/binutils/  ?  I'm not supposed to check out
binutils git into the base gcc directory, am I?  There's a bunch of
files that will conflict.

2. I got the git directory from http://www.gnu.org/software/binutils/
--- and it's binutils-gdb.git.  Gdb isn't involved, yet.  Am I
checking out the wrong thing?

3. How do I get past the nm issue?

Re: Buidling binutils in gcc source directory

[Alan Modra]

On Thu, May 21, 2015 at 09:25:48PM -0400, Michael Darling wrote:
> 1. Why is it expecting the binutils binaries to be in
> top-source-dir/binutils/ when they are all in
> top-source-dir/binutils/binutils/  ?  I'm not supposed to check out
> binutils git into the base gcc directory, am I?  There's a bunch of
> files that will conflict.

It's been a while since I bothered with a combined build, but yes, you
need to merge the binutils source tree with the gcc source tree.
google gcc binutils combined build.

> 2. I got the git directory from http://www.gnu.org/software/binutils/
> --- and it's binutils-gdb.git.  Gdb isn't involved, yet.  Am I
> checking out the wrong thing?

binutils-gdb is the correct repository.  If you don't want to build gdb,
configure with -disable-gdb --disable-sim --disable-readline (and
--disable-libdecnumber if building binutils stand-alone).

-- 
Alan Modra
Australia Development Lab, IBM

Re: Buidling binutils in gcc source directory

[Matt Rice]

On Thu, May 21, 2015 at 8:10 PM, Alan Modra <amodra@gmail.com> wrote:
> On Thu, May 21, 2015 at 09:25:48PM -0400, Michael Darling wrote:
>> 1. Why is it expecting the binutils binaries to be in
>> top-source-dir/binutils/ when they are all in
>> top-source-dir/binutils/binutils/  ?  I'm not supposed to check out
>> binutils git into the base gcc directory, am I?  There's a bunch of
>> files that will conflict.
>
> It's been a while since I bothered with a combined build, but yes, you
> need to merge the binutils source tree with the gcc source tree.
> google gcc binutils combined build.

been a long time since I tried this as well, but I believe you want to
check out gcc last,
and IIRC something to the effect of the following can work for
checking out into a combined working directory (not really tested)

GIT_DIR=~/git/binutils-gdb/.git git read-tree  master
GIT_DIR=~/git/binutils-gdb/.git git checkout-index -u -f -a

GIT_DIR=~/git/gcc/.git git read-tree  master
GIT_DIR=~/git/gcc/.git git checkout-index -u -f -a

>> 2. I got the git directory from http://www.gnu.org/software/binutils/
>> --- and it's binutils-gdb.git.  Gdb isn't involved, yet.  Am I
>> checking out the wrong thing?
>
> binutils-gdb is the correct repository.  If you don't want to build gdb,
> configure with -disable-gdb --disable-sim --disable-readline (and
> --disable-libdecnumber if building binutils stand-alone).
>
> --
> Alan Modra
> Australia Development Lab, IBM