bootstrap/3040: Fail build libmath at cygwin

[wanderer at rsu dot ru]

>Number:         3040
>Category:       bootstrap
>Synopsis:       Fail build libmath at cygwin
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 03 08:16:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Vladimir Merzliakov
>Release:        gcc version 3.1 20010603 (experimental)
>Organization:
>Environment:
i686-pc-cygwin
>Description:
make[1]: Entering directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3'
make "AR_FLAGS=rc"      "CC_FOR_BUILD=gcc"      "CC_FOR_TARGET=/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc
/obj/gcc/xgcc -B/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/gcc/ -B/usr/local/i686-pc-cygwin/bin/ -B/u
sr/local/i686-pc-cygwin/lib/ -isystem /usr/local/i686-pc-cygwin/include"        "CFLAGS=-g -O2"         "CXXFLAGS=-g -O2"    "
CFLAGS_FOR_BUILD="      "CFLAGS_FOR_TARGET=-g -O2"      "INSTALL=/bin/sh /cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin
/build/gcc/src/gcc31/gcc/install-sh -c"         "INSTALL_DATA=/bin/sh /cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/bu
ild/gcc/src/gcc31/gcc/install-sh -c -m 644"     "INSTALL_PROGRAM=/bin/sh /cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin
/build/gcc/src/gcc31/gcc/install-sh -c "        "INSTALL_SCRIPT=/bin/sh /cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/
build/gcc/src/gcc31/gcc/install-sh -c"  "LDFLAGS="      "LIBCFLAGS=-g -O2"      "LIBCFLAGS_FOR_TARGET=-g -O2"   "MAKE=make"  "
MAKEINFO=makeinfo  "    "PICFLAG="      "PICFLAG_FOR_TARGET="   "SHELL=/bin/sh"         "RUNTESTFLAGS="         "exec_prefix=/
usr/local"      "infodir=/usr/local/info"       "libdir=/usr/local/lib"         "includedir=/usr/local/include"         "prefi
x=/usr/local"   "tooldir=/usr/local/i686-pc-cygwin"     "AR=ar"         "AS=as"         "LD=ld"         "LIBCFLAGS=-g -O2"   "
PICFLAG="       "RANLIB=ranlib"         "NM=nm"         "NM_FOR_BUILD="         "NM_FOR_TARGET=nm"      "DESTDIR="      "WERRO
R="  all-recursive
make[2]: Entering directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3'
Making all in libio
make[3]: Entering directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3/l
ibio'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3/li
bio'
Making all in libmath
make[3]: Entering directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3/l
ibmath'
/bin/sh ../libtool --mode=compile /cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/gcc/xgcc -B/cygdrive/c/d
ocume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/gcc/ -B/usr/local/i686-pc-cygwin/bin/ -B/usr/local/i686-pc-cygwin/lib/
-isystem /usr/local/i686-pc-cygwin/include -DHAVE_CONFIG_H -I. -I/home/administrator/pkg/build/gcc/src/gcc31/gcc/libstdc++-v3/
libmath -I.. -I/home/administrator/pkg/build/gcc/src/gcc31/gcc/libstdc++-v3/include -I../include             -g -O2 -c /home/a
dministrator/pkg/build/gcc/src/gcc31/gcc/libstdc++-v3/libmath/signbit.c
libtool: compile: unable to infer tagged configuration
libtool: compile: specify a tag with `--tag'
make[3]: *** [signbit.lo] Error 1
make[3]: Leaving directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3/li
bmath'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3'
make[1]: *** [all-recursive-am] Error 2
make[1]: Leaving directory `/cygdrive/c/docume~1/wanderer/mydocu~1/project/Cigwin/build/gcc/obj/i686-pc-cygwin/libstdc++-v3'
make: *** [all-target-libstdc++-v3] Error 2

I use for bootstrup configure:
/home/administrator/pkg/build/gcc/src/gcc31/gcc/configure --enable-threads=posix --enable-languages=c++
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: