Problems when cross compiling GCC on mingw

Hello,

somewhere during version 4.6 of GCC I started to get a weird error when
I compile GCC with newlib for target arm-none-eabi, and it never went
away (now on 4.7).
I'll first start with the output of the terminal at the error:

/home/gnuarm-linaro/build/gcc-linaro-4.7-2012.05/./gcc/xgcc
-B/home/gnuarm-linar
o/build/gcc-linaro-4.7-2012.05/./gcc/ -nostdinc
-B/home/gnuarm-linaro/build/gcc-
linaro-4.7-2012.05/arm-none-eabi/newlib/ -isystem
/home/gnuarm-linaro/build/gcc-
linaro-4.7-2012.05/arm-none-eabi/newlib/targ-include -isystem
/home/gnuarm-linar
o/src/gcc-linaro-4.7-2012.05/newlib/libc/include
-B/home/gnuarm-linaro/build/gcc
-linaro-4.7-2012.05/arm-none-eabi/libgloss/arm
-L/home/gnuarm-linaro/build/gcc-l
inaro-4.7-2012.05/arm-none-eabi/libgloss/libnosys
-L/home/gnuarm-linaro/src/gcc-
linaro-4.7-2012.05/libgloss/arm
-B/home/gnuarm-linaro/install/arm-none-eabi/bin/
  -B/home/gnuarm-linaro/install/arm-none-eabi/lib/ -isystem
/home/gnuarm-linaro/i
nstall/arm-none-eabi/include -isystem
/home/gnuarm-linaro/install/arm-none-eabi/
sys-include    -g -O2 -mthumb -O2 -g -O2 -DIN_GCC
-DCROSS_DIRECTORY_STRUCTURE  -
W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wo
ld-style-definition  -isystem ./include  -I. -I. -I../../.././gcc
-I../../../../
../src/gcc-linaro-4.7-2012.05/libgcc
-I../../../../../src/gcc-linaro-4.7-2012.05
/libgcc/. -I../../../../../src/gcc-linaro-4.7-2012.05/libgcc/../gcc
-I../../../.
./../src/gcc-linaro-4.7-2012.05/libgcc/../include   -g0
-finhibit-size-directive
  -fno-inline -fno-exceptions -fno-zero-initialized-in-bss
-fno-toplevel-reorder
-fno-tree-vectorize -fno-stack-protector  -I. -I. -I../../.././gcc
-I../../../..
/../src/gcc-linaro-4.7-2012.05/libgcc
-I../../../../../src/gcc-linaro-4.7-2012.0
5/libgcc/. -I../../../../../src/gcc-linaro-4.7-2012.05/libgcc/../gcc
-I../../../
../../src/gcc-linaro-4.7-2012.05/libgcc/../include  -o crtbegin.o -MT
crtbegin.o
  -MD -MP -MF crtbegin.dep  -c
../../../../../src/gcc-linaro-4.7-2012.05/libgcc/c
rtstuff.c -DCRT_BEGIN
In file included from
D:/MinGW/msys/1.0/home/gnuarm-linaro/src/gcc-linaro-4.7-20
12.05/newlib/libc/include/stdio.h:46:0,
                  from
../../../../../src/gcc-linaro-4.7-2012.05/libgcc/../gcc/ts
ystem.h:88,
                  from
../../../../../src/gcc-linaro-4.7-2012.05/libgcc/crtstuff.
c:62:
D:/MinGW/msys/1.0/home/gnuarm-linaro/src/gcc-linaro-4.7-2012.05/newlib/libc/incl
ude/sys/types.h:127:16: error: expected identifier or '(' before 'char'
make[4]: *** [crtbegin.o] Error 1
make[4]: Leaving directory
`/home/gnuarm-linaro/build/gcc-linaro-4.7-2012.05/arm
-none-eabi/thumb/libgcc'
make[3]: *** [multi-do] Error 1
make[3]: Leaving directory
`/home/gnuarm-linaro/build/gcc-linaro-4.7-2012.05/arm
-none-eabi/libgcc'
make[2]: *** [all-multi] Error 2
make[2]: Leaving directory
`/home/gnuarm-linaro/build/gcc-linaro-4.7-2012.05/arm
-none-eabi/libgcc'
make[1]: *** [all-target-libgcc] Error 2
make[1]: Leaving directory
`/home/gnuarm-linaro/build/gcc-linaro-4.7-2012.05'
make: *** [all] Error 2

I have included the complete command for completeness, so it's a bit
long, but the interesting part is where it says:
types.h:127:16: error: expected identifier or '(' before 'char'

The source at that particular line is:
typedef    char *    caddr_t;
which is perfectly fine.

Now this error only occurs when I either do a cross compile on mingw
(from which the terminal excerpt above comes from), or a canadian cross
on linux (I do this because it is much faster than a cross compile on
mingw, and it saves me another mingw error: "couldn't commit memory for
cygwin heap, Win32 error 0" reported by make). But the error won't occur
when I do a cross-compile on linux.

My current workaround is to comment out the line where it crashes on and
then continue the build process. It will later complain it doesn't know
caddr_t, at which I uncomment the line again and continue again. I have
to repeat these steps until it completes successfully, which is a lot of
times.

These are the tools I used:
binutils-2.22
newlib-1.20.0
gcc-linaro-4.7-2012.05      (non-linaro gcc-4.7.0 will produce the same
error)
gmp, mpfr, etc I got using mingw-get

Steps to reproduce:
Make symlinks to newlib in gcc:
ln -f -s `pdw`/newlib-1.20.0/newlib gcc-linaro-4.7-2012.05
ln -f -s `pdw`/newlib-1.20.0/libgloss gcc-linaro-4.7-2012.05

binutils:
configure --target=arm-none-eabi --prefix=/home/gnuarm/install
--enable-interwork --enable-multilib --with-gnu-as --with-gnu-ld
--disable-nls --disable-werror
make all
make install

gcc (gcc takes care of newlib):
configure --target=arm-none-eabi --prefix=/home/gnuarm/install
--with-arch=armv7-m --with-mode=thumb --with-float=soft
--enable-interwork --enable-multilib --enable-languages="c,c++"
--with-newlib --with-gnu-as --with-gnu-ld --disable-nls --disable-shared
--disable-threads --with-headers=newlib/libc/include --disable-libssp
--disable-libstdcxx-pch --disable-libmudflap --disable-libgomp
--disable-werror --with-system-zlib --disable-newlib-supplied-syscalls
make all
make install

For the canadian cross build I use i586-mingw32msvc as host

I hope I got all the info in this message and that it's clear.

Arie

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