m68k-rtems-gcc toolchain build problem on Solaris-7

[Ralf Corsepius]

Some remarks interspersed ...

FWIW: I recall having seen this error before, ... unfortunately I don't
recall the cause :( (It's been a while since I had built gcc-3.2.3 the
last time.)

On Tue, 2003-12-30 at 09:20, Paul Cadaret wrote: 

> to run the build according to the PDF file at
> http://www.rtems.com/onlinedocs/releases/rtemsdocs-4.6.0pre5/share/rtems/pdf/started.pdf
> and I followed the PDF file instructions carefully for:
> 
>      4.1.2 Unarchiving the Tools
>      4.1.3 Applying RTEMS Patches,
>              Apply RTEMS Patch to GCC,
>              Apply RTEMS Patch to binutils,
>              Apply RTEMS Patch to newlib
>      4.1.4.2 Using configure and make,
>                  Configuring and Building BINUTILS,
>                  Configuring and Building GCC and NEWLIB
> 
> Binutils built and installed without error.
Is /tools/local.m68k-rtems/bin in $PATH when configuring and building gcc?

Is /tools/local.m68k-rtems/bin at the beginning of $PATH?

Which shell are you using? gcc-3.2.3 is rumored to require bash or
another sufficiently POSIX compliant sh (Solaris /bin/sh is known not to
be sufficient, some versions of pdksh are known to be broken; Newer
ksh's should work, older ones are broken; /usr/xpg4/bin/sh should work)

Which options exactly do you pass to gcc's configure?

It should be something similar to this:
  export PATH="/tools/local.m68k-rtems/bin:${PATH}"
  ../gcc-3.2.3/configure \
    --target=m68k-rtems \
    --with-gnu-as --with-gnu-ld --with-newlib --verbose \
    --with-system-zlib --disable-nls \
    --enable-version-specific-runtime-libs \
    --enable-threads=rtems --prefix=/tools/local.m68k-rtems
    --enable-languages="c,c++"

[Building on Solaris might require not use --with-system-zlib, ie. to
build zlib.]

> Building gcc-3.2.3 died as follows:
> 
> /sd/c0t8d0/opt1/web/sites/ftp.rtems.com/tools/gcc-3.2.3/build.m68k-rtems/gcc/xgcc
>      -B/sd/c0t8d0/opt1/web/sites/ftp.rtems.com/
>        1114  tools/gcc-3.2.3/build.m68k-rtems/gcc/ -nostdinc
>  
> -B/sd/c0t8d0/opt1/web/sites/ftp.rtems.com/tools/gcc-3.2.3/build.m68k-rtems/m
>        1114  68k-rtems/newlib/ -isystem
>  
> /sd/c0t8d0/opt1/web/sites/ftp.rtems.com/tools/gcc-3.2.3/build.m68k-rtems/m68k-rtems/newlib/targ-i
>        1114  nclude -isystem
>  
> /sd/c0t8d0/opt1/web/sites/ftp.rtems.com/tools/gcc-3.2.3/src/newlib/libc/include
>      -B/tools/local.m68k-rtems/m6
>        1114  8k-rtems/bin/ -B/tools/local.m68k-rtems/m68k-rtems/lib/
>      -isystem /tools/local.m68k-rtems/m68k-rtems/include -O2 -I../../src/
>        1114  gcc/../newlib/libc/sys/rtems/include -DIN_GCC
>      -DCROSS_COMPILE   -W -Wall -Wwrite-strings -Wstrict-prototypes
>      -Wmissing-proto
>        1114  types -isystem ./include   -g -DHAVE_GTHR_DEFAULT
>      -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc -I. -I.
>      -I../../src/g
>        1114  cc -I../../src/gcc/. -I../../src/gcc/config
>      -I../../src/gcc/../include  -DL_fixunsdfsi -c
>      ../../src/gcc/libgcc2.c -o libgcc/
>        1114  ./_fixunsdfsi.o
> 
>        1115  In file included from
>  
> /sd/c0t8d0/opt1/web/sites/ftp.rtems.com/tools/gcc-3.2.3/build.m68k-rtems/gcc/include/syslimits.h:7,
>        1116                   from
>  
> /sd/c0t8d0/opt1/web/sites/ftp.rtems.com/tools/gcc-3.2.3/build.m68k-rtems/gcc/include/limits.h:11,
>        1117                   from ../../src/gcc/libgcc2.c:1166:
>        1118
>  
> /sd/c0t8d0/opt1/web/sites/ftp.rtems.com/tools/gcc-3.2.3/build.m68k-rtems/gcc/include/limits.h:132:75:
>      no include path in whi
>        1118  ch to find limits.h
>        1119  make[2]: *** [libgcc/./_fixunsdfsi.o] Error 1
>        1120  make[2]: Leaving directory

Some wild guesses on general gcc-building issues, I had encountered
building different gcc versions:

* Make sure $prefix/m68k-rtems exists before building.
  mkdir -p /tools/local.m68k-rtems/m68k-rtems

* After having run configure, try this
  cd <builddir>
  test -d gcc/include || mkdir -p gcc/include 
  cp ../gcc-3.2.3/gcc/gsyslimits.h gcc/include/syslimits.h

* Make sure not to have set *any* environment variables that might
interfere with gcc (CPP, LIB, LIBS, CC, CFLAGS, CXXFLAGS etc.)

* Make sure not to have '.' in $PATH.

* Do not try to relocate gcc. Install it to the prefix it had been
configured for.

> What is "the system's own limits.h file" ???  linux?  solaris? newlib?
> rtems?
The target's limits.h, which should have been generated when building
the target gcc.

> The "#include_next" is a feature of the newer gcc's
IIRC, #include_next is in gcc for a very long time ... (IIRC gcc-2.7.x
if not earlier).

Anyway, it is xgcc, the just "having been built cross-compiler", which
chokes, not your native gcc.

[..]
> Since 'configure' builds the makefiles here and I have no idea what it
> is trying to accomplish here, I really don't know
> what to fix.

>    As best I can tell the Solaris toolchain is broken.
Well, yes,  sparc-sun-solaris-gcc is troublesome and in most cases
requires additional patching, but .. AFAIS, this is not the cause of
your issue.

(BTW: Building gcc-3.x for Solaris2.7 requires using
--target=sparc-sun-solaris2.7; sparc-sun-solaris is similar,  but not
identical to sparc-sun-solaris2.7)

However, this should not matter here. You are building for
--target=m68k-rtems. 
The fact xgcc already has been built at the stage you are seeing the
error indicates your solaris-gcc to be functional.
=> The cause of the breakdown is somewhere else.

> Some further data:
> 
>      rtems> uname -a
>      SunOS u2 5.7 Generic_106541-08 sun4u sparc SUNW,UltraSPARC-IIi-Engine
> 
>      rtems> perl --version
>      This is perl, v5.6.0 built for sun4-solaris
>      rtems> autoconf --version
>      autoconf (GNU Autoconf) 2.59
> 
>      rtems> automake --version
>      automake (GNU automake) 1.8
FWIW: The autotools are not used when building gcc.

>      rtems> gmake --version
>      GNU Make 3.80
> 
>      rtems> gcc --version
>      2.95.2
> 
>      rtems> type m68k-rtems-as
>      m68k-rtems-as is /tools/local.m68k-rtems/bin/m68k-rtems-as
> 
>      rtems> m68k-rtems-as --version
>      GNU assembler 2.13.2.1

Ralf