+AC_EXEEXT
+
+AC_CHECK_HEADERS(sys/gmon_out.h)
+
+AC_MSG_CHECKING(the size of gmon pointers)
+AC_TRY_RUN([#include <stdio.h>
+#include <stdlib.h>
+#if HAVE_SYS_GMON_OUT_H
+#include <sys/gmon_out.h>
+#endif
+main()
+{
+#if HAVE_SYS_GMON_OUT_H
+ struct gmon_cg_arc_record arc;
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof(arc.from_pc));
+ exit(0);
+#else
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", (int) sizeof(char *));
+ exit(1);
+#endif
+}], gmon_ptr_size=`cat conftestval`, gmon_ptr_size=4, gmon_ptr_size=4)
+AC_MSG_RESULT($gmon_ptr_size)
+
+AC_DEFINE_UNQUOTED(GMON_PTR_SIZE, $gmon_ptr_size)
+
+build_warnings="-W -Wall"
+AC_ARG_ENABLE(build-warnings,
+[ --enable-build-warnings Enable build-time compiler warnings if gcc is used],
+[case "${enableval}" in
+ yes) ;;
+ no) build_warnings="-w";;
+ ,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
+ build_warnings="${build_warnings} ${t}";;
+ *,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
+ build_warnings="${t} ${build_warnings}";;
+ *) build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+esac
+if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
+ echo "Setting warning flags = $build_warnings" 6>&1
+fi])dnl
+WARN_CFLAGS=""
+if test "x${build_warnings}" != x -a "x$GCC" = xyes ; then
+ WARN_CFLAGS="${build_warnings}"
+fi
+AC_SUBST(WARN_CFLAGS)