Failure building GFortran (Cygwin)

[Angelo Graziosi]

Last week I flagged some problems with 4.4-20080620 snapshot [1], now 
the current snapshot fails in a different manner:

[...]
make[2]: Entering directory `/work/build'
make[3]: Entering directory `/work/build'
rm -f stage_current
make[3]: Leaving directory `/work/build'
Comparing stages 2 and 3
warning: ./cc1-checksum.o differs
Comparison successful.
if false; then \
	  rm -rf stage2-*; \
	  echo timestamp >  stage2-lean; \
	fi
[...]
make[4]: Leaving directory `/work/build/i686-pc-cygwin/libgfortran'
make[3]: Leaving directory `/work/build/i686-pc-cygwin/libgfortran'
make[2]: Leaving directory `/work/build/i686-pc-cygwin/libgfortran'
Checking multilib configuration for libiberty...
mkdir -p -- i686-pc-cygwin/libiberty
Configuring in i686-pc-cygwin/libiberty
[...]
/work/build/./gcc/xgcc -B/work/build/./gcc/ 
-B/usr/local/gfortran/i686-pc-cygwin/bin/ 
-B/usr/local/gfortran/i686-pc-cygwin/lib/ -isystem 
/usr/local/gfortran/i686-pc-cygwin/include -isystem 
/usr/local/gfortran/i686-pc-cygwin/sys-include -c -DHAVE_CONFIG_H -g -O2 
   -I. -I/work/gcc/libiberty/../include  -W -Wall -Wwrite-strings 
-Wc++-compat -Wstrict-prototypes -pedantic 
/work/gcc/libiberty/strerror.c -o strerror.o
if [ x"" != x ]; then \
	  /work/build/./gcc/xgcc -B/work/build/./gcc/ 
-B/usr/local/gfortran/i686-pc-cygwin/bin/ 
-B/usr/local/gfortran/i686-pc-cygwin/lib/ -isystem 
/usr/local/gfortran/i686-pc-cygwin/include -isystem 
/usr/local/gfortran/i686-pc-cygwin/sys-include -c -DHAVE_CONFIG_H -g -O2 
   -I. -I/work/gcc/libiberty/../include  -W -Wall -Wwrite-strings 
-Wc++-compat -Wstrict-prototypes -pedantic 
/work/gcc/libiberty/strsignal.c -o pic/strsignal.o; \
	else true; fi
/work/build/./gcc/xgcc -B/work/build/./gcc/ 
-B/usr/local/gfortran/i686-pc-cygwin/bin/ 
-B/usr/local/gfortran/i686-pc-cygwin/lib/ -isystem 
/usr/local/gfortran/i686-pc-cygwin/include -isystem 
/usr/local/gfortran/i686-pc-cygwin/sys-include -c -DHAVE_CONFIG_H -g -O2 
   -I. -I/work/gcc/libiberty/../include  -W -Wall -Wwrite-strings 
-Wc++-compat -Wstrict-prototypes -pedantic 
/work/gcc/libiberty/strsignal.c -o strsignal.o
/work/gcc/libiberty/strsignal.c:408: error: conflicting types for 
'strsignal'
/usr/include/string.h:78: error: previous declaration of 'strsignal' was 
here
make[2]: *** [strsignal.o] Error 1
make[2]: Leaving directory `/work/build/i686-pc-cygwin/libiberty'
make[1]: *** [all-target-libiberty] Error 2
make[1]: Leaving directory `/work/build'
make: *** [all] Error 2

The above happens on Cygwin, using gcc-core, gcc-fortran tarballs and 
configuring

${gcc_dir}/configure --prefix="${prefix_dir}" \
                          --exec-prefix="${eprefix_dir}" \
                          --sysconfdir="${sysconf_dir}" \
                          --libdir="${lib_dir}" \
                          --libexecdir="${libexec_dir}" \
                          --mandir="${man_dir}" \
                          --infodir="${info_dir}" \
                          --enable-languages=c,fortran \
                          --enable-bootstrap \
                          --enable-decimal-float=bid \
                          --enable-libgomp \
                          --enable-threads \
                          --enable-sjlj-exceptions \
                          --enable-version-specific-runtime-libs \
                          --enable-nls \
                          --enable-checking=release \
                          --disable-fixed-point \
                          --disable-libmudflap \
                          --disable-shared \
                          --disable-win32-registry \
                          --with-system-zlib \
                          --without-included-gettext \
                          --without-x



Cheers,
    Angelo.

---
[1] http://gcc.gnu.org/ml/fortran/2008-06/msg00250.html