[Bug libstdc++/40974] New: cannot build gcc-4.4.1: fenv_t has not been declared

["booleandomain at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

I'm using a gcc-4.4.1 cross-compiler to build another instance of gcc-4.4.1 for
the target system. make fails with the following error message:

make[2]: Entering directory
`/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3'
make "AR_FLAGS=rc" "CC_FOR_BUILD=gcc"
"CC_FOR_TARGET=/mnt/clfs/cross-tools/usr/bin/x86_64-unknown-linux-gnu-gcc "
"CFLAGS=-g -O2 -march=core2  " "CXXFLAGS=-g -O2   -D_GNU_SOURCE  "
"CFLAGS_FOR_BUILD=" "CFLAGS_FOR_TARGET=-g -O2 -march=core2"
"INSTALL=/usr/bin/install -c" "INSTALL_DATA=/usr/bin/install -c -m 644"
"INSTALL_PROGRAM=/usr/bin/install -c" "INSTALL_SCRIPT=/usr/bin/install -c"
"LDFLAGS=" "LIBCFLAGS=-g -O2 -march=core2  " "LIBCFLAGS_FOR_TARGET=-g -O2
-march=core2" "MAKE=make" "MAKEINFO=makeinfo --split-size=5000000
--split-size=5000000 " "PICFLAG=" "PICFLAG_FOR_TARGET=" "SHELL=/bin/sh"
"RUNTESTFLAGS=" "exec_prefix=/usr" "infodir=/usr/info" "libdir=/usr/lib"
"includedir=/usr/include" "prefix=/usr" "tooldir=/usr/x86_64-unknown-linux-gnu"
"gxx_include_dir=/usr/include/c++/4.4.1"
"AR=/mnt/clfs/cross-tools/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../x86_64-unknown-linux-gnu/bin/ar"
"AS=/mnt/clfs/cross-tools/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../x86_64-unknown-linux-gnu/bin/as"
"LD=/mnt/clfs/cross-tools/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../x86_64-unknown-linux-gnu/bin/ld"
"RANLIB=/mnt/clfs/cross-tools/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../x86_64-unknown-linux-gnu/bin/ranlib"
"NM=/mnt/clfs/cross-tools/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../x86_64-unknown-linux-gnu/bin/nm"
"NM_FOR_BUILD="
"NM_FOR_TARGET=/mnt/clfs/cross-tools/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.1/../../../../x86_64-unknown-linux-gnu/bin/nm"
"DESTDIR=" "WERROR=" all-recursive
make[3]: Entering directory
`/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3'
Making all in include
make[4]: Entering directory
`/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include'
mkdir -p ./x86_64-unknown-linux-gnu/bits/stdtr1c++.h.gch
/mnt/clfs/cross-tools/usr/bin/x86_64-unknown-linux-gnu-c++  -x c++-header -g
-O2   -D_GNU_SOURCE  
-I/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/mnt/clfs/sources/gcc-4.4.1/libstdc++-v3/libsupc++ -O2 -g
/mnt/clfs/sources/gcc-4.4.1/libstdc++-v3/include/precompiled/stdtr1c++.h -o
x86_64-unknown-linux-gnu/bits/stdtr1c++.h.gch/O2g.gch
In file included from
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1/cfenv:46,
                 from
/mnt/clfs/sources/gcc-4.4.1/libstdc++-v3/include/precompiled/stdtr1c++.h:33:
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:49:
error: '::fenv_t' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:50:
error: '::fexcept_t' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:53:
error: '::feclearexcept' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:54:
error: '::fegetexceptflag' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:55:
error: '::feraiseexcept' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:56:
error: '::fesetexceptflag' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:57:
error: '::fetestexcept' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:59:
error: '::fegetround' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:60:
error: '::fesetround' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:62:
error: '::fegetenv' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:63:
error: '::feholdexcept' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:64:
error: '::fesetenv' has not been declared
/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/tr1_impl/cfenv:65:
error: '::feupdateenv' has not been declared
make[4]: *** [x86_64-unknown-linux-gnu/bits/stdtr1c++.h.gch/O2g.gch] Error 1
make[4]: Leaving directory
`/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory
`/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3'
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/mnt/clfs/sources/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3'
make[1]: *** [all-target-libstdc++-v3] Error 2
make[1]: Leaving directory `/mnt/clfs/sources/gcc-build'
make: *** [all] Error 2

The configure command contained the following options: --prefix=/usr
--build=x86_64-cross-linux-gnu --host=x86_64-unknown-linux-gnu
--target=x86_64-unknown-linux-gnu --enable-languages=c,c++ --disable-multilib

The following environment variables were set before the build started:

export CC=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-gcc
export CXX=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-c++
export AR=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-ar
export AS=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-as
export LD=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-ld
export NM=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-nm
export OBJDUMP=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-objdump
export RANLIB=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-ranlib
export STRIP=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-strip
export CC_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-gcc
export CXX_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-c++
export AR_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-ar
export AS_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-as
export LD_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-ld
export NM_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-nm
export OBJDUMP_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-objdump
export RANLIB_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-ranlib
export STRIP_FOR_TARGET=${CLFS_CROSS_TOOLS}/usr/bin/${CLFS_TARGET}-strip

CLFS_CROSS_TOOLS is the path to the gcc cross-compiler. CLFS_TARGET is
x86_64-unknown-linux-gnu.


-- 
           Summary: cannot build gcc-4.4.1: fenv_t has not been declared
           Product: gcc
           Version: 4.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: booleandomain at gmail dot com
 GCC build triplet: x86_64-cross-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40974