Re: Darwin cross-compile (i586): as fails on crtstuff.c

Re: Darwin cross-compile (i586): as fails on crtstuff.c

[Dara Hazeghi]

Hello,

what you've described are the classic symptoms of
building a cross-compiler without having the necessary
tools installed.

You need to build and install binutils with the same
target and prefix you're building gcc with.
(--prefix=/opt/gcc-3.2.3 --target=i586-pc-linux-gnu).
You should probable add $PREFIX to $PATH too (so gcc
can find said binutils).

Once you do that though, you'll need i586 headers and
libraries to be available. See
<http://bytesex.org/cross-compiler.html> for instance.
Also note that you'll need to pass the
--with-headers=/path/to/i586/include/directory and
--with-libs=/path/to/i586/libs flags when building
(<http://gcc.gnu.org/install/configure.html> under the
section about cross-compilers, ignore the stuff about
sysroot, it's only for newer compilers).

For distcc, you can probably cheat (not use libraries,
headers). To do that, instead of doing make for gcc,
do make -k and make -k install. It'll break building
the libraries, but distcc doesn't actually need them.
You need binutils in any case.

That said, I can't imagine why you'd use an iBook on a
distcc farm. My poor tiBook takes many hours just to
compile gcc, and that's enough for me :-)

Cheers,

Dara

__________________________________
Do you Yahoo!?
Protect your identity with Yahoo! Mail AddressGuard
http://antispam.yahoo.com/whatsnewfree

Re: Darwin cross-compile (i586): as fails on crtstuff.c

[Jan Fabry]

Thank you for your quick reply.

I already had binutils installed (for the correct target), and the 
correct path was already included in $PATH. This directory contains 
i586-pc-linux-gnu-* symlinks, I guess this is correct? (I didn't specify 
this in the ./configure, they 'just appeared') The (gcc) Makefile seems 
to be prepared for this.

However, the Makefile picks up the path to $AS_FOR_TARGET by doing 
./gcc/xgcc -print-prog-name=as, which returns 'as'. I can understand it 
does this if it would first build 'as' (because the binutils source is 
unpacked in the same tree as the gcc source), but it seems this is not 
the case.

I can remove these lines from the Makefile, and then $AS_FOR_TARGET gets 
set to the correct file, but for the compilation, the wrong 'as' is used 
again.

So, I still have a few questions:
- If I unpack the binutils source in the same tree as gcc, will it 
'automagically' also be built and installed?
- If not, why does ./gcc/xgcc tell me 'as' is the assembler to use? How 
can I change this?

Greetings,

Jan Fabry

PS: I'm doing this for fun, just to see if it would work. That's why 
it's not a problem I only run it from an iBook, speed doesn't matter.

Dara Hazeghi wrote:
> Hello,
> 
> what you've described are the classic symptoms of
> building a cross-compiler without having the necessary
> tools installed.
> 
> You need to build and install binutils with the same
> target and prefix you're building gcc with.
> (--prefix=/opt/gcc-3.2.3 --target=i586-pc-linux-gnu).
> You should probable add $PREFIX to $PATH too (so gcc
> can find said binutils).
> 
> Once you do that though, you'll need i586 headers and
> libraries to be available. See
> <http://bytesex.org/cross-compiler.html> for instance.
> Also note that you'll need to pass the
> --with-headers=/path/to/i586/include/directory and
> --with-libs=/path/to/i586/libs flags when building
> (<http://gcc.gnu.org/install/configure.html> under the
> section about cross-compilers, ignore the stuff about
> sysroot, it's only for newer compilers).
> 
> For distcc, you can probably cheat (not use libraries,
> headers). To do that, instead of doing make for gcc,
> do make -k and make -k install. It'll break building
> the libraries, but distcc doesn't actually need them.
> You need binutils in any case.
> 
> That said, I can't imagine why you'd use an iBook on a
> distcc farm. My poor tiBook takes many hours just to
> compile gcc, and that's enough for me :-)
> 
> Cheers,
> 
> Dara
> 

Re: Darwin cross-compile (i586): as fails on crtstuff.c

[Dara Hazeghi]

Hello,

> 
> I already had binutils installed (for the correct
> target), and the 
> correct path was already included in $PATH. This
> directory contains 
> i586-pc-linux-gnu-* symlinks, I guess this is
> correct? (I didn't specify 
> this in the ./configure, they 'just appeared') The
> (gcc) Makefile seems 
> to be prepared for this.

So does $prefix/i586-pc-linux-gnu/bin contain
binutils? Somehow, when gcc is configured, it's
supposed to realize that the tools are in that
directory.

> So, I still have a few questions:
> - If I unpack the binutils source in the same tree
> as gcc, will it 
> 'automagically' also be built and installed?
> - If not, why does ./gcc/xgcc tell me 'as' is the
> assembler to use? How 
> can I change this?

Pretty much. Usually what I do is decompress binutils,
decompress gcc, create a new directory build, symlink
gcc/* to build/ and binutils/* to build/ . Then create
an objdir, configuring ../build/configure and so
forth. Hope that helps.

Dara


__________________________________
Do you Yahoo!?
Protect your identity with Yahoo! Mail AddressGuard
http://antispam.yahoo.com/whatsnewfree

Darwin cross-compile (i586): as fails on crtstuff.c

[Jan Fabry]

Hello,

I am trying to cross-compile gcc 3.2.3 on my iBook, so it can be a part 
of a distcc farm for an i586.

However, (Apple's) 'as' fails on crtstuff.c. Installing the GNU binutils 
is not an option, as the assembler is not available for the Mac 
platform. I have searched Google and this mailinglist for similar 
messages, but couldn't find anything. I have also searched the CrossGCC 
mailing list and FAQ, but that seemed more for embedded devices and 
things like that.

I have already installed a (working) native gcc 3.2.3, and am using that 
one instead of the one Apple provides (because of precompiler errors).


gcc -v:
Reading specs from 
/opt/gcc-3.2.3/lib/gcc-lib/powerpc-apple-darwin6.8/3.2.3/specs
Configured with: ../src/gcc-3.2.3/configure --prefix=/opt/gcc-3.2.3
Thread model: single
gcc version 3.2.3

as -v:
Apple Computer, Inc. version cctools-446.1.obj~1, GNU assembler version 1.38

cat config.status:
#!/bin/sh
# This file was generated automatically by configure.  Do not edit.
# This directory was configured as follows:
../src/gcc-3.2.3/configure 
--with-gcc-version-trigger=/Users/distcc/src/gcc-3.2.3/gcc/version.c 
--host=powerpc-apple-darwin6.8 --target=i586-pc-linux-gnu --norecursion
#  using "mt-frag"


I used 'make', not 'make bootstrap', since I was cross-compiling, and I 
already had a native GCC (I think this was the correct way to do, 
otherwise I misunderstood the documentation).


This is the output of the last command of 'make':

/Users/distcc/gcc-obj/gcc/xgcc -B/Users/distcc/gcc-obj/gcc/ 
-B/usr/local/i586-pc-linux-gnu/bin/ -B/usr/local/i586-pc-linux-gnu/lib/ 
-isystem /usr/local/i586-pc-linux-gnu/include -O2 -DIN_GCC 
-DCROSS_COMPILE   -W -Wall -Wwrite-strings -Wstrict-prototypes 
-Wmissing-prototypes -isystem ./include  -I. -I. 
-I../../src/gcc-3.2.3/gcc -I../../src/gcc-3.2.3/gcc/. 
-I../../src/gcc-3.2.3/gcc/config -I../../src/gcc-3.2.3/gcc/../include 
-g0 -finhibit-size-directive -fno-inline-functions -fno-exceptions 
-fno-omit-frame-pointer \
   -Dinhibit_libc -c ../../src/gcc-3.2.3/gcc/crtstuff.c -DCRT_BEGIN \
   -o crtbegin.o
/usr/libexec/gcc/darwin/ppc/as: I don't understand 'Q' flag!
/usr/libexec/gcc/darwin/ppc/as: I don't understand 'y' flag!
crtstuff.c:2:unknown section type: @progbits
crtstuff.c:2:Rest of line ignored. 1st junk character valued 32 ( ).
crtstuff.c:3:Unknown pseudo-op: .type
crtstuff.c:3:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:3:Invalid mnemonic 'object'
crtstuff.c:6:unknown section type: @progbits
crtstuff.c:6:Rest of line ignored. 1st junk character valued 32 ( ).
crtstuff.c:7:Unknown pseudo-op: .type
crtstuff.c:7:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:7:Invalid mnemonic 'object'
crtstuff.c:10:unknown section type: @progbits
crtstuff.c:10:Rest of line ignored. 1st junk character valued 32 ( ).
crtstuff.c:11:Unknown pseudo-op: .type
crtstuff.c:11:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:11:Invalid mnemonic 'object'
crtstuff.c:13:unknown section type: @progbits
crtstuff.c:13:Rest of line ignored. 1st junk character valued 32 ( ).
crtstuff.c:14:Unknown pseudo-op: .type
crtstuff.c:14:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:14:Invalid mnemonic 'object'
crtstuff.c:17:Unknown pseudo-op: .hidden
crtstuff.c:17:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:22:Unknown pseudo-op: .type
crtstuff.c:22:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:22:Invalid mnemonic 'object'
crtstuff.c:26:Unknown pseudo-op: .type
crtstuff.c:26:Rest of line ignored. 1st junk character valued 112 (p).
crtstuff.c:26:Invalid mnemonic 'object'
crtstuff.c:29:Unknown pseudo-op: .local
crtstuff.c:29:Rest of line ignored. 1st junk character valued 99 (c).
crtstuff.c:30:Rest of line ignored. 1st junk character valued 44 (,).
crtstuff.c:32:Unknown pseudo-op: .p2align
crtstuff.c:32:Rest of line ignored. 1st junk character valued 52 (4).
crtstuff.c:33:Unknown pseudo-op: .type
crtstuff.c:33:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:33:Invalid mnemonic 'function'
crtstuff.c:35:Invalid mnemonic 'pushl'
crtstuff.c:36:Invalid mnemonic 'movl'
crtstuff.c:37:Invalid mnemonic 'pushl'
crtstuff.c:38:Invalid mnemonic 'pushl'
crtstuff.c:39:Invalid mnemonic 'cmpb'
crtstuff.c:40:Invalid mnemonic 'jne'
crtstuff.c:41:Invalid mnemonic 'movl'
crtstuff.c:42:Invalid mnemonic 'movl'
crtstuff.c:43:Invalid mnemonic 'testl'
crtstuff.c:44:Invalid mnemonic 'je'
crtstuff.c:45:Unknown pseudo-op: .p2align
crtstuff.c:45:Rest of line ignored. 1st junk character valued 52 (4).
crtstuff.c:47:Invalid mnemonic 'addl'
crtstuff.c:48:Invalid mnemonic 'movl'
crtstuff.c:49:Invalid mnemonic 'call'
crtstuff.c:50:Invalid mnemonic 'movl'
crtstuff.c:51:Invalid mnemonic 'movl'
crtstuff.c:52:Invalid mnemonic 'testl'
crtstuff.c:53:Invalid mnemonic 'jne'
crtstuff.c:55:Invalid mnemonic 'movl'
crtstuff.c:56:Invalid mnemonic 'testl'
crtstuff.c:57:Invalid mnemonic 'je'
crtstuff.c:58:Invalid mnemonic 'subl'
crtstuff.c:59:Invalid mnemonic 'pushl'
crtstuff.c:60:Invalid mnemonic 'call'
crtstuff.c:61:Invalid mnemonic 'addl'
crtstuff.c:63:Invalid mnemonic 'movb'
crtstuff.c:65:Invalid mnemonic 'leave'
crtstuff.c:66:Invalid mnemonic 'ret'
crtstuff.c:68:Expected comma after segment-name
crtstuff.c:68:Rest of line ignored. 1st junk character valued 32 ( ).
crtstuff.c:71:Unknown pseudo-op: .local
crtstuff.c:71:Rest of line ignored. 1st junk character valued 111 (o).
crtstuff.c:72:Rest of line ignored. 1st junk character valued 44 (,).
crtstuff.c:73:Unknown pseudo-op: .p2align
crtstuff.c:73:Rest of line ignored. 1st junk character valued 52 (4).
crtstuff.c:74:Unknown pseudo-op: .type
crtstuff.c:74:Rest of line ignored. 1st junk character valued 102 (f).
crtstuff.c:74:Invalid mnemonic 'function'
crtstuff.c:76:Invalid mnemonic 'pushl'
crtstuff.c:77:Invalid mnemonic 'movl'
crtstuff.c:78:Invalid mnemonic 'movl'
crtstuff.c:80:Invalid mnemonic 'call'
crtstuff.c:82:Invalid mnemonic 'popl'
crtstuff.c:83:Invalid mnemonic 'addl'
crtstuff.c:85:Invalid mnemonic 'pushl'
crtstuff.c:86:Invalid mnemonic 'pushl'
crtstuff.c:87:Invalid mnemonic 'testl'
crtstuff.c:88:Invalid mnemonic 'je'
crtstuff.c:89:Invalid mnemonic 'pushl'
crtstuff.c:90:Invalid mnemonic 'pushl'
crtstuff.c:91:Invalid mnemonic 'pushl'
crtstuff.c:92:Invalid mnemonic 'pushl'
crtstuff.c:93:Invalid mnemonic 'call'
crtstuff.c:94:Invalid mnemonic 'addl'
crtstuff.c:96:Invalid mnemonic 'movl'
crtstuff.c:97:Invalid mnemonic 'testl'
crtstuff.c:98:Invalid mnemonic 'je'
crtstuff.c:99:Invalid mnemonic 'movl'
crtstuff.c:100:Invalid mnemonic 'testl'
crtstuff.c:101:Invalid mnemonic 'je'
crtstuff.c:102:Invalid mnemonic 'subl'
crtstuff.c:103:Invalid mnemonic 'pushl'
crtstuff.c:104:Invalid mnemonic 'call'
crtstuff.c:105:Invalid mnemonic 'addl'
crtstuff.c:107:Invalid mnemonic 'movl'
crtstuff.c:108:Invalid mnemonic 'popl'
crtstuff.c:109:Invalid mnemonic 'ret'
crtstuff.c:111:Expected comma after segment-name
crtstuff.c:111:Rest of line ignored. 1st junk character valued 32 ( ).
crtstuff.c:113:Unknown pseudo-op: .weak
crtstuff.c:113:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:114:Unknown pseudo-op: .weak
crtstuff.c:114:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:115:Unknown pseudo-op: .weak
crtstuff.c:115:Rest of line ignored. 1st junk character valued 95 (_).
crtstuff.c:116:Unknown pseudo-op: .ident
crtstuff.c:116:Rest of line ignored. 1st junk character valued 34 (").
make[1]: *** [crtbegin.o] Error 1
make: *** [all-gcc] Error 2


If you need more output, please reply to me, or take a look at [ 
http://www.scoco.be/distcc ], where I have placed the full output from 
'configure' and 'make'.


If someone could point me to more information to help me get past this 
problem, I would be extremely thankful!

Greetings,

Jan Fabry