Building samba 3.2.2: error while running configure: cannot run test program while cross compiling

交叉编译samba（mipsel-linux）
http://hi.baidu.com/jiaolingqi/blog/item/640fa777dd21ba12b051b9db.html

Tough question: errors while cross compiling to MIPS
http://old.nabble.com/Tough-question:-errors-while-cross-compiling-to-MIPS-td11657205.html

Re: cannot run test program while cross compiling.
http://coding.derkeiler.com/Archive/General/comp.arch.embedded/2007-10/msg00158.html

[Samba] Cannot cross-compile 3.0.20b from i686 to mipsel
http://lists.samba.org/archive/samba/2005-November/113506.html

Building samba 3.2.2 for armv4

1. samba-3.2.2/source/configure
   

   ############################################
   # check if the compiler can handle negative enum values
   # and don't truncate the values to INT_MAX
   # a runtime test is needed here
   
   { echo "$as_me:$LINENO: checking that the C compiler understands negative enum values" >&5
   echo $ECHO_N "checking that the C compiler understands negative enum values... $ECHO_C" >&6; }
   if test "${samba_cv_CC_NEGATIVE_ENUM_VALUES+set}" = set; then
    echo $ECHO_N "(cached) $ECHO_C" >&6
   else
   
      if test "$cross_compiling" = yes; then
    { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
   See \`config.log' for more details." >&5
   echo "$as_me: error: cannot run test program while cross compiling
   See \`config.log' for more details." >&2;}
     { (exit 1); exit 1; }; }

   
   

   
   so add "samba_cv_CC_NEGATIVE_ENUM_VALUES=yes" to parameter list of configure would fix this problem
   

       ./configure \
          --host=arm-linux CC=arm-linux-gcc --prefix=${INSTALL_PATH} CFLAGS="-pipe -Os -march=armv4" \
          samba_cv_CC_NEGATIVE_ENUM_VALUES=yes 

   
   
2. samba-3.2.2/source/configure

   #
   #
   #
   case "$host_os" in
      *linux*)
         # glibc <= 2.3.2 has a broken getgrouplist
         if test "$cross_compiling" = yes; then
   #  { { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
   #See \`config.log' for more details." >&5
   #echo "$as_me: error: cannot run test program while cross compiling
   #See \`config.log' for more details." >&2;}
   #   { (exit 1); exit 1; }; }
     { echo "$as_me:$LINENO: glibc <= 2.3.2 check skipped" >&5
   echo "$as_me: glibc <= 2.3.2 check skipped" >&2;}
   
   else
    cat >conftest.$ac_ext <<_ACEOF

   
   Or,
   

   }; }
   # { (exit 1); exit 1; }; }