AC_DEFUN(AC_COMPILER_LOCALHACK,[  AC_MSG_CHECKING([if local/include already standard])  rm -f comp.out  echo 'int main() { int i = 1; if( *((unsigned char *) &i) == 0 ) printf( "BIGENDIAN"); return 0; }' >> conftest.c  ${CC} $CPPFLAGS $EXTRA_INCLUDES -o conftest conftest.c 2> comp.out  COMP_CHECK=`grep "system directory" comp.out | grep /usr/local/include`  if test -z "$COMP_CHECK" ; then      AC_MSG_RESULT([no, everything is ok])  else     AC_MSG_RESULT([yes, stripping extras])     CXXFLAGS=`echo "$CXXFLAGS " | sed "s/-I\/usr\/local\/include //"`     CFLAGS=`echo "$CFLAGS " | sed "s/-I\/usr\/local\/include //"`     EXTRA_INCLUDES=`echo "$EXTRA_INCLUDES " | sed "s/-I\/usr\/local\/include //"`  fi   rm -f comp.out])AC_DEFUN(AC_COMPILER_WFLAGS,[	# Remove -g from compile flags, we will add via CFG variable if	# we need it.	CXXFLAGS=`echo "$CXXFLAGS " | sed "s/-g //"`	CFLAGS=`echo "$CFLAGS " | sed "s/-g //"`	# check for GNU compiler, and use -Wall	if test "$GCC" = "yes"; then		C_WFLAGS="-Wall"		AC_DEFINE(USE_GNUCC, 1, [Define to 1, if you have GNU C		compiler])	fi	if test "$GXX" = "yes"; then		CXX_WFLAGS="-Wall"		AC_DEFINE(USE_GNUCC, 1, [Define to 1, if you have GNU C		compiler])	fi	AC_SUBST(CXX_WFLAGS,$CXX_WFLAGS)	AC_SUBST(C_WFLAGS,$C_WFLAGS)])AC_DEFUN(AC_COMPILER_PIC,[	echo 'void f(){}' > conftest.c	if test -z "`${CC-cc} -fPIC -c conftest.c 2>&1`"; then	  C_PIC=-fPIC	else	  C_PIC=	fi	if test -z "`${CXX-g++} -fPIC -c conftest.c 2>&1`"; then	  CXX_PIC=-fPIC	else	  CXX_PIC=	fi	rm -f conftest*	AC_SUBST(CXX_PIC,$CXX_PIC)	AC_SUBST(C_PIC,$C_PIC)])dnldnl Try to find something to link shared libraries with.  Use "c++ -shared"dnl in preference to "ld -shared" because it will link in required c++dnl run time support for us. dnlAC_DEFUN(AC_LD_SHARED,[  echo 'void g(); int main(){ g(); return 0; }' > conftest1.c  echo '#include <stdio.h>' > conftest2.c  echo 'void g(); void g(){printf("");}' >> conftest2.c  ${CC} ${C_PIC} -c conftest2.c  SO_EXT="so"  export SO_EXT  LD_SHARED="/bin/true"  if test ! -z "`uname -a | grep IRIX`" ; then    IRIX_ALL=-all  else    IRIX_ALL=  fi  AC_ARG_WITH(ld-shared,[  --with-ld-shared=cmd    provide shared library link],,)  if test "$with_ld_shared" != "" ; then    if test "$with_ld_shared" = "no" ; then      echo "user disabled shared library support."	    else      echo "using user supplied .so link command ... $with_ld_shared"	    fi    LD_SHARED="$with_ld_shared"  fi  dnl Check For Cygwin case.  Actually verify that the produced DLL works.  if test ! -z "`uname -a | grep CYGWIN`" \        -a "$LD_SHARED" = "/bin/true" \	-a -z "`gcc -shared conftest2.o -o libconftest.dll`" ; then    if test -z "`${CC} conftest1.c -L./ -lconftest -o conftest1 2>&1`"; then      LD_LIBRARY_PATH_OLD="$LD_LIBRARY_PATH"      if test -z "$LD_LIBRARY_PATH" ; then        LD_LIBRARY_PATH="`pwd`"      else        LD_LIBRARY_PATH="`pwd`:$LD_LIBRARY_PATH"      fi      export LD_LIBRARY_PATH      if test -z "`./conftest1 2>&1`" ; then        echo "checking for Cygwin gcc -shared ... yes"        LD_SHARED="c++ -shared"        SO_EXT="dll"      fi      LD_LIBRARY_PATH="$LD_LIBRARY_PATH_OLD"    fi  fi  dnl Test special MacOS (Darwin) case.   if test ! -z "`uname | grep Darwin`" \          -a "$LD_SHARED" = "/bin/true" \          -a -z "`${CXX} -dynamiclib conftest2.o -o libconftest.so 2>&1`" ; then    ${CC} -c conftest1.c    if test -z "`${CXX} conftest1.o libconftest.so -o conftest1 2>&1`"; then      DYLD_LIBRARY_PATH_OLD="$DYLD_LIBRARY_PATH"      if test -z "$DYLD_LIBRARY_PATH" ; then        DYLD_LIBRARY_PATH="`pwd`"      else        DYLD_LIBRARY_PATH="`pwd`:$DYLD_LIBRARY_PATH"      fi      export DYLD_LIBRARY_PATH      if test -z "`./conftest1 2>&1`" ; then        echo "checking for ${CXX} -dynamiclib ... yes"        LD_SHARED="${CXX} -dynamiclib"	SO_EXT=dylib      fi      DYLD_LIBRARY_PATH="$DYLD_LIBRARY_PATH_OLD"    fi    rm -f conftest1.o  fi  if test "$LD_SHARED" = "/bin/true" \	-a -z "`${CXX} -shared $IRIX_ALL conftest2.o -o libconftest.so 2>&1|grep -v WARNING`" ; then    if test -z "`${CC} conftest1.c libconftest.so -o conftest1 2>&1`"; then      LD_LIBRARY_PATH_OLD="$LD_LIBRARY_PATH"      if test -z "$LD_LIBRARY_PATH" ; then        LD_LIBRARY_PATH="`pwd`"      else        LD_LIBRARY_PATH="`pwd`:$LD_LIBRARY_PATH"      fi      export LD_LIBRARY_PATH      if test -z "`./conftest1 2>&1`" ; then        echo "checking for ${CXX} -shared ... yes"        LD_SHARED="${CXX} -shared $IRIX_ALL"      else        echo "checking for ${CXX} -shared ... no(3)"      fi      LD_LIBRARY_PATH="$LD_LIBRARY_PATH_OLD"    else      echo "checking for ${CXX} -shared ... no(2)"    fi  else     if test "$LD_SHARED" = "/bin/true" ; then      echo "checking for ${CXX} -shared ... no(1)"    fi  fi  if test "$LD_SHARED" = "/bin/true" \          -a -z "`ld -shared conftest2.o -o libconftest.so 2>&1`" ; then    if test -z "`${CC} conftest1.c libconftest.so -o conftest1 2>&1`"; then      LD_LIBRARY_PATH_OLD="$LD_LIBRARY_PATH"      if test -z "$LD_LIBRARY_PATH" ; then        LD_LIBRARY_PATH="`pwd`"      else        LD_LIBRARY_PATH="`pwd`:$LD_LIBRARY_PATH"      fi      export LD_LIBRARY_PATH      if test -z "`./conftest1 2>&1`" ; then        echo "checking for ld -shared ... yes"        LD_SHARED="ld -shared"      fi      LD_LIBRARY_PATH="$LD_LIBRARY_PATH_OLD"    fi  fi  if test "$LD_SHARED" = "/bin/true" ; then    echo "checking for ld -shared ... no"    if test ! -x /bin/true ; then      LD_SHARED=/usr/bin/true    fi  fi  if test "$LD_SHARED" = "no" ; then    if test -x /bin/true ; then      LD_SHARED=/bin/true    else      LD_SHARED=/usr/bin/true    fi  fi  rm -f conftest* libconftest*   AC_SUBST(LD_SHARED,$LD_SHARED)  AC_SUBST(SO_EXT,$SO_EXT)])