Trying to set up gcc 3.2.3 cross i686-linux -> mips-sgi-irix6

[Alexander JOLK <alexj at buf dot com>]

Hi,

I've been trying for some time now to set up gcc 3.2.3 as a cross
compiler for mips-sgi-irix6 under i686-pc-linux-gnu.  (That is, I want a
compiler that runs on Linux and gives me code for Irix 6.5.  And that
because we have fewer and slower SGI machines than Linux PCs, and
compiling on Irix gets loong.)  I have made quite some progress, but now
I'm stuck and I could use some help.  Oh, and I do need C++.  My host
system is a Red Hat 7.3, with that infamous gcc `version 2.96'.


Quick resume of the questions, with details following:
0. Handholding would be appreciated.  I have complete typescripts of my
attempts, so I should be able to answer specific questions.
1. Why does ld have /usr/lib32 hardcoded?  (I think that might be a
question for the binutils folks.)
2. Can someone enlighten me how I'm supposed to use --with-sysroot?  I
didn't get it to work (but didn't try hard, either).
3. Neither Irix' libc.a nor libc.so seem to be sufficient for the build;
one of them is needed for the first part, the other for the second. 
Why?
4. Why does the build prefer header files in `newlib/...' over the
seemingly system-specific ones in `os/irix/irix6.5/'?  (I tried
--without-newlib once, which didn't seem to change anything.)
5. What's wrong with cxxabi.h, and how to I get it to continue?

Here's what I've done so far:

setenv PREFIX=/work/gcc-32-irix
setenv WORK=/work/gcc-32-cross
. Compiled the GNU binutils-030429 snapshot with
	./configure --target=mips-sgi-irix6 --prefix=$PREFIX
	make; make install
 (no problems here)

set path=( $PREFIX/bin $path )
tar xvvpSjf gcc-core-3.2.3.tar.bz2
tar xvvpSjf gcc-g++-3.2.3.tar.bz2
mkdir mips-sgi-irix6-build
cd mips-sgi-irix6-build
../gcc-3.2.3/configure --target=mips-sgi-irix6 --with-gnu-as \
	--with-gnu-ld \
	--prefix=$PREFIX

# copy Irix system headers
mkdir $PREFIX/mips-sgi-irix6/sys-include
rsync -avr irix-host:/usr/include/ $PREFIX/mips-sgi-irix6/sys-include

# copy Irix libc.a
rcp irix-host:/usr/lib32/cmplrs/intr32/libc.a \
	$PREFIX/mips-sgi-irix6/lib

make

This `make' fails with the following message:
make[1]: Leaving directory
`/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libiberty'
loading cache ../config.cache
[...]
checking whether the C compiler (/work/gcc-32-cross/gcc-3.2.3/gcc/xgcc
-B/work/gcc-32-cross/gcc-3.2.3/gcc/
-B/work/gcc-32-irix/mips-sgi-irix6/bin/
-B/work/gcc-32-irix/mips-sgi-irix6/lib/ -isystem
/work/gcc-32-irix/mips-sgi-irix6/include -O2 -g -O2 ) works... no
configure: error: installation or configuration problem: C compiler
cannot create executables.
make: *** [configure-target-libiberty] Error 1

mips-sgi-irix6/libiberty/config.log shows that ld expects crt1.o and
crtn.o to live in /usr/lib32.  So,

su
cd /usr
ln -s $PREFIX/lib32 lib32
mkdir -p $PREFIX/lib32/mips3
rsync irix-host:/usr/lib32/mips3/crt\* $PREFIX/lib32/mips3/

Then, `make' like before fails with:
[...]
checking whether the C compiler (/work/gcc-32-cross/gcc-3.2.3/gcc/xgcc
-B/work/gcc-32-cross/gcc-3.2.3/gcc/
-B/work/gcc-32-irix/mips-sgi-irix6/bin/
-B/work/gcc-32-irix/mips-sgi-irix6/lib/ -isystem
/work/gcc-32-irix/mips-sgi-irix6/include -O2 -g -O2 ) works... no
configure: error: installation or configuration problem: C compiler
cannot create executables.
make: *** [configure-target-libiberty] Error 1
# tail mips-sgi-irix6/libiberty/config.log 
/usr/lib32/mips3/crt1.o(.MIPS.events.text+0x10):/xlv55/kudzu-apr12/work/irix/lib/libc/libc_n32_M3/csu/crt1text.s:104:
undefined reference to `__readenv_sigfpe'
/usr/lib32/mips3/crt1.o(.MIPS.events.text+0x1a):/xlv55/kudzu-apr12/work/irix/lib/libc/libc_n32_M3/csu/crt1text.s:106:
undefined reference to `exit'
/usr/lib32/mips3/crt1.o(.MIPS.events.text+0x1c):/xlv55/kudzu-apr12/work/irix/lib/libc/libc_n32_M3/csu/crt1text.s:106:
undefined reference to `exit'
collect2: ld returned 1 exit status
configure: failed program was:

#line 2213 "configure"
#include "confdefs.h"

main(){return(0);}

I believe there are some functions in Irix libc that are only in the
shared libc.so, but not in libc.a (?).  I had tried copying libc.so
instead of libc.a, but GNU ld refused to link with it.  It seems that
you need both, libc.a *and* libc.so at different stages of compile. 
Here's what works for me:

rsync -L irix-host:/usr/lib32/mips3/libc.so $PREFIX/lib32
	add as a first line to mips-sgi-irix6/config.cache:
LIBS="$LIBS -L$PREFIX/lib32"

Again, `make', which gets a lot farther than before, failing with:

/work/gcc-32-cross/gcc-3.2.3/gcc/xgcc -shared-libgcc
-B/work/gcc-32-cross/gcc-3.2.3/gcc/ -nostdinc++
-L/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/src
-L/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/src/.libs
-B/work/gcc-32-irix/mips-sgi-irix6/bin/
-B/work/gcc-32-irix/mips-sgi-irix6/lib/ -isystem
/work/gcc-32-irix/mips-sgi-irix6/include -nostdinc++
-I/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/include/mips-sgi-irix6
-I/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/include
-I../libsupc++ -I../libmath -g -O2 -fno-implicit-templates -Wall
-Wno-format -W -Wwrite-strings -Winline -fdiagnostics-show-location=once
-g -D_GLIBCPP_CONCEPT_CHECKS -fimplicit-templates -c concept-inst.cc -o
concept-inst.o >/dev/null 2>&1
In file included from ctype.cc:36:
/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/include/mips-sgi-irix6/bits/ctype_noninline.h:
In
   static member function `static const char* 
   std::ctype<char>::classic_table()':
/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/include/mips-sgi-irix6/bits/ctype_noninline.h:38:
`
   _ctype_' undeclared (first use this function)
/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/include/mips-sgi-irix6/bits/ctype_noninline.h:38:
(Each
   undeclared identifier is reported only once for each function it
appears 
   in.)
make[3]: *** [ctype.lo] Error 1
make[3]: Leaving directory
`/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory
`/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3'
make[1]: *** [all-recursive-am] Error 2
make[1]: Leaving directory
`/work/gcc-32-cross/gcc-3.2.3/mips-sgi-irix6/libstdc++-v3'
make: *** [all-target-libstdc++-v3] Error 2

# cd mips-sgi-irix6/libstdc++-v3/include/mips-sgi-irix6/bits
All files here are symbolic links, some of them pointing to
.../gcc-3.2.3/libstdc++-v3/config/os/newlib/bits/ even if there seems to
be a corresponding file in .../config/os/irix/irix6.5/bits/.  So,
# ln -sf $WORK/gcc-3.2.3/libstdc++-v3/config/os/irix/irix6.5/bits/* .

This time, `make' gets a little further, finally failing with:

/work/gcc-32-cross/mips-sgi-irix6-build/gcc/xgcc -shared-libgcc
-B/work/gcc-32-cross/mips-sgi-irix6-build/gcc/ -nostdinc++
-L/work/gcc-32-cross/mips-sgi-irix6-build/mips-sgi-irix6/libstdc++-v3/src
-L/work/gcc-32-cross/mips-sgi-irix6-build/mips-sgi-irix6/libstdc++-v3/src/.libs
-B/work/gcc-32-irix/mips-sgi-irix6/bin/
-B/work/gcc-32-irix/mips-sgi-irix6/lib/ -isystem
/work/gcc-32-irix/mips-sgi-irix6/include -nostdinc++
-I/work/gcc-32-cross/mips-sgi-irix6-build/mips-sgi-irix6/libstdc++-v3/include/mips-sgi-irix6
-I/work/gcc-32-cross/mips-sgi-irix6-build/mips-sgi-irix6/libstdc++-v3/include
-I../../../../gcc-3.2.3/libstdc++-v3/libsupc++
-I../../../../gcc-3.2.3/libstdc++-v3/libmath -g -O2
-fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings -Winline
-fdiagnostics-show-location=once -g -c
../../../../gcc-3.2.3/libstdc++-v3/src/vterminate.cc   -DPIC -o
.libs/vterminate.o
In file included from
../../../../gcc-3.2.3/libstdc++-v3/src/vterminate.cc:34:
../../../../gcc-3.2.3/libstdc++-v3/libsupc++/cxxabi.h:288: syntax error
before 
   `)' token
../../../../gcc-3.2.3/libstdc++-v3/libsupc++/cxxabi.h:359: syntax error
before 
   `)' token
../../../../gcc-3.2.3/libstdc++-v3/libsupc++/cxxabi.h:408: syntax error
before 
   `)' token
make[3]: *** [vterminate.lo] Error 1
make[3]: Leaving directory
`/work/gcc-32-cross/mips-sgi-irix6-build/mips-sgi-irix6/libstdc++-v3/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory
`/work/gcc-32-cross/mips-sgi-irix6-build/mips-sgi-irix6/libstdc++-v3'
make[1]: *** [all-recursive-am] Error 2
make[1]: Leaving directory
`/work/gcc-32-cross/mips-sgi-irix6-build/mips-sgi-irix6/libstdc++-v3'
make: *** [all-target-libstdc++-v3] Error 2

-- 
Alexander Jolk         /         BUF Compagnie
tel +33-1 42 68 18 28 /  fax +33-1 42 68 18 29

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