diff --git a/configure b/configure
index 557ac101..996d1984 100755
--- a/configure
+++ b/configure
@@ -3306,7 +3306,6 @@ fi
 
 
 
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqrt in -lm" >&5
 $as_echo_n "checking for sqrt in -lm... " >&6; }
 if ${ac_cv_lib_m_sqrt+:} false; then :
@@ -3973,7 +3972,12 @@ fi
 
 
 if test "$GCC" = yes; then
-	CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes -flto=auto -ffat-lto-objects"
+	CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes"
+        # Check for link-time optimization support
+        for f in -flto=auto -ffat-lto-objects; do
+            echo -n "Checking if C compiler supports $f... "
+            if $CC -E $f /dev/null > /dev/null 2>&1 ; then echo "yes"; CFLAGS="$CFLAGS $f"; else echo "no"; fi
+        done
 fi
 
 if test "$ac_cv_perlartifacts" = "yes" ; then
diff --git a/configure.in b/configure.in
index dfe2d118..2e289dd2 100644
--- a/configure.in
+++ b/configure.in
@@ -28,8 +28,6 @@ AC_PROG_MAKE_SET
 AC_PATH_PROG([PERL], [perl])
 
 dnl Checks for libraries.
-dnl Replace `main' with a function in -lm:
-
 AC_CHECK_LIB(m, sqrt)
 
 dnl Integer sizes
@@ -47,7 +45,12 @@ AC_FUNC_UTIME_NULL
 AC_HEADER_TIME
 
 if test "$GCC" = yes; then
-	CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes -flto=auto -ffat-lto-objects"
+	CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes"
+        # Check for link-time optimization support
+        for f in -flto=auto -ffat-lto-objects; do
+            echo -n "Checking if C compiler supports $f... "
+            if $CC -E $f /dev/null > /dev/null 2>&1 ; then echo "yes"; CFLAGS="$CFLAGS $f"; else echo "no"; fi
+        done
 fi
 
 if test "$ac_cv_perlartifacts" = "yes" ; then