update to newer autoconf

winsup/cygserver/configure.in

@@ -9,62 +9,14 @@ dnl details.
 dnl
 dnl Process this file with autoconf to produce a configure script.
 
-AC_PREREQ(2.12)dnl
+AC_PREREQ(2.59)dnl
 AC_INIT(cygserver.cc)
 
+AC_CONFIG_AUX_DIR(../..)
+
 INSTALL=`cd $srcdir/../..; echo $(pwd)/install-sh -c`
 
 AC_PROG_INSTALL
-
-dnl FIXME: We temporarily define our own version of AC_PROG_CC.  This is
-dnl copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
-dnl are probably using a cross compiler, which will not be able to fully
-dnl link an executable.  This should really be fixed in autoconf
-dnl itself.
-
-AC_DEFUN(LIB_AC_PROG_CC,
-[AC_BEFORE([$0], [AC_PROG_CPP])dnl
-AC_CHECK_TOOL(CC, gcc, gcc)
-if test -z "$CC"; then
-  AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
-  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
-fi
-
-AC_PROG_CC_GNU
-
-if test $ac_cv_prog_gcc = yes; then
-  GCC=yes
-dnl Check whether -g works, even if CFLAGS is set, in case the package
-dnl plays around with CFLAGS (such as to build both debugging and
-dnl normal versions of a library), tasteless as that idea is.
-  ac_test_CFLAGS="${CFLAGS+set}"
-  ac_save_CFLAGS="$CFLAGS"
-  CFLAGS=
-  AC_PROG_CC_G
-  if test "$ac_test_CFLAGS" = set; then
-    CFLAGS="$ac_save_CFLAGS"
-  elif test $ac_cv_prog_cc_g = yes; then
-    CFLAGS="-gstabs+ -O2"
-  else
-    CFLAGS="-O2"
-  fi
-else
-  GCC=
-  test "${CFLAGS+set}" = set || CFLAGS="-g"
-fi
-])
-
-AC_DEFUN(LIB_AC_PROG_CXX,
-[AC_BEFORE([$0], [AC_PROG_CPP])dnl
-AC_CHECK_TOOL(CXX, g++, g++)
-if test -z "$CXX"; then
-  AC_CHECK_PROG(CXX, c++, c++, , , )
-  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
-fi
-
-CXXFLAGS='$(CFLAGS)'
-])
-
 AC_CANONICAL_SYSTEM
 
 LIB_AC_PROG_CC