don't try to detect glibc and libstdc++ version as we don't need this information any longer

buildlib/environment.mak.in

@@ -9,8 +9,6 @@ CPPFLAGS+= @CPPFLAGS@ @DEFS@ -D_REENTRANT -Wall
 CXX = @CXX@
 CXXFLAGS+= @CXXFLAGS@
 NUM_PROCS = @NUM_PROCS@
-GLIBC_VER = @GLIBC_VER@
-LIBSTDCPP_VER = @LIBSTDCPP_VER@
 
 # Linker stuff
 PICFLAGS+= -fPIC -DPIC

buildlib/tools.m4

@@ -89,56 +89,6 @@ AC_DEFUN(ah_NUM_PROCS,
 	AC_SUBST(NUM_PROCS)
 ])
 
-AC_DEFUN(rc_GLIBC_VER,
-	[AC_MSG_CHECKING([glibc version])
-	AC_CACHE_VAL(ac_cv_glibc_ver,
-	dummy=if$$
-	cat <<_GLIBC_>$dummy.c
-#include <features.h>
-#include <stdio.h>
-#include <stdlib.h>
-int main(int argc, char **argv) { printf("libc6.%d",__GLIBC_MINOR__); exit(0); }
-_GLIBC_
-	${CC-cc} $dummy.c -o $dummy > /dev/null 2>&1
-	if test "$?" = 0; then
-		GLIBC_VER=`./$dummy`
-		AC_MSG_RESULT([$GLIBC_VER])
-		ac_cv_glibc_ver=$GLIBC_VER
-	else
-		AC_MSG_WARN([cannot determine GNU C library minor version number])
-	fi
-	rm -f $dummy $dummy.c
-	)
-	GLIBC_VER="-$ac_cv_glibc_ver"
-	AC_SUBST(GLIBC_VER)
-])
-
-AC_DEFUN(rc_LIBSTDCPP_VER,
-	[AC_MSG_CHECKING([libstdc++ version])
-	dummy=if$$
-	cat <<_LIBSTDCPP_>$dummy.cc
-#include <features.h>
-#include <stdio.h>
-#include <stdlib.h>
-int main(int argc, char **argv) { exit(0); }
-_LIBSTDCPP_
-	${CXX-c++} $dummy.cc -o $dummy > /dev/null 2>&1
-
-	if test "$?" = 0; then
-		soname=`objdump -p ./$dummy |grep NEEDED|grep libstd`
-                LIBSTDCPP_VER=`echo $soname | sed -e 's/.*NEEDED.*libstdc++\(-libc.*\(-.*\)\)\?.so.\(.*\)/\3\2/'`
-	fi
-	rm -f $dummy $dummy.cc
-
-	if test -z "$LIBSTDCPP_VER"; then
-		AC_MSG_WARN([cannot determine standard C++ library version number])
-	else
-		AC_MSG_RESULT([$LIBSTDCPP_VER])
-		LIBSTDCPP_VER="-$LIBSTDCPP_VER"
-	fi
-	AC_SUBST(LIBSTDCPP_VER)
-])
-
 AC_DEFUN(ah_GCC3DEP,[
 	AC_MSG_CHECKING(if $CXX -MD works)
 	touch gcc3dep.cc

configure.in

@@ -197,8 +197,6 @@ DOTDIR=$(dirname $DOT)
 AC_SUBST(DOTDIR)
 
 ah_NUM_PROCS
-rc_GLIBC_VER
-rc_LIBSTDCPP_VER
 ah_GCC3DEP
 
 dnl It used to be that the user could select translations and that could get