See http://gcc.gnu.org/PR12010

g++ testsuite fixes for cross-compilers, Dan Kegel, Ixia Communications, 12 July 2003

The first hunk fixes the error

/testsuite_flags: /testsuite_flags: No such file or directory

    while executing

"exec sh ${odir_v3}/testsuite_flags --build-includes"

    (procedure "g++_include_flags" line 21)

    invoked from within

"g++_include_flags [get_multilibs] "

    (procedure "g++_init" line 63)

    invoked from within

"${tool}_init $test_file_name"

    (procedure "runtest" line 19)

    invoked from within

"runtest $test_name"

    ("foreach" body line 42)

    invoked from within

...

make[1]: [check-g++] Error 1 (ignored)

The fix isn't especially pretty, but it worked for me, and can't hurt the

more common native compiler case.  Maybe someone who knows the code better 

can come up with a better fix.

The second hunk fixes the error

sh: error while loading shared libraries: /opt/cegl-2.0/powerpc-405-linux-gnu/gcc-3.2.3-glibc-2.2.5/powerpc-405-linux-gnu/./lib/libdl.so.2: ELF file data encoding not little-endian

when trying to compile g++ testcases (!); setting up

the shared library environment when running crosstests of g++ 

should either be done by a special board file, or by

setting up a remote chroot environment (see http://kegel.com/crosstool),

not by blithely setting LD_LIBRARY_PATH on the local system.

--- gcc-3.2.3/gcc/testsuite/lib/g++.exp.old	Fri Jul 11 15:42:47 2003

+++ gcc-3.2.3/gcc/testsuite/lib/g++.exp	Sat Jul 12 12:57:07 2003

@@ -72,6 +72,8 @@

 #

 proc g++_include_flags { paths } {

     global srcdir

+    global objdir

+    global target_triplet

     global HAVE_LIBSTDCXX_V3

     global TESTING_IN_BUILD_TREE

@@ -90,6 +92,20 @@

     if { ${HAVE_LIBSTDCXX_V3} } {

       set odir_v3 [lookfor_file ${gccpath} libstdc++-v3]

+      if { $odir_v3 == "" } {

+          verbose "g++_include_flags: couldn't find libstdc++-v3 on first try, now looking in build directory $objdir"

+	  # first assume no multilibs

+          set odir_v3 [lookfor_file ${objdir} "$target_triplet/libstdc++-v3"]

+      }

+      if { $odir_v3 == "" } {

+          verbose "g++_include_flags: couldn't find libstdc++-v3 on second try, trying multilib"

+	  # assume multilib only one level deep

+          set multisub [file tail $gccpath]

+          set odir_v3 [lookfor_file ${objdir} "$target_triplet/$multisub/libstdc++-v3"]

+      }

+      if { $odir_v3 == "" } {

+           error "Can't find libstdc++-v3"

+      }

       append flags [exec sh ${odir_v3}/testsuite_flags --build-includes]

     } else {

       set odir_v2 [lookfor_file ${gccpath} libstdc++]

@@ -192,16 +192,20 @@

       }

     }

-    # On IRIX 6, we have to set variables akin to LD_LIBRARY_PATH, but

-    # called LD_LIBRARYN32_PATH (for the N32 ABI) and LD_LIBRARY64_PATH

-    # (for the 64-bit ABI).  The right way to do this would be to modify

-    # unix.exp -- but that's not an option since it's part of DejaGNU

-    # proper, so we do it here.  We really only need to do 

-    # this on IRIX, but it shouldn't hurt to do it anywhere else.

-    setenv  LD_LIBRARY_PATH     $ld_library_path

-    setenv  SHLIB_PATH          $ld_library_path

-    setenv  LD_LIBRARYN32_PATH  $ld_library_path

-    setenv  LD_LIBRARY64_PATH   $ld_library_path

+    if {![is_remote target]} {

+      # On IRIX 6, we have to set variables akin to LD_LIBRARY_PATH, but

+      # called LD_LIBRARYN32_PATH (for the N32 ABI) and LD_LIBRARY64_PATH

+      # (for the 64-bit ABI).  The right way to do this would be to modify

+      # unix.exp -- but that's not an option since it's part of DejaGNU

+      # proper, so we do it here.  We really only need to do 

+      # this on IRIX, but it shouldn't hurt to do it anywhere else.

+

+      # Doing this causes us to be unable to run cross-compilers.

+      setenv  LD_LIBRARY_PATH     $ld_library_path

+      setenv  SHLIB_PATH          $ld_library_path

+      setenv  LD_LIBRARYN32_PATH  $ld_library_path

+      setenv  LD_LIBRARY64_PATH   $ld_library_path

+    }

     return "$flags"

 }