diff --git a/configure b/configure
index 26a4d1f..22e32e6 100755
--- a/configure
+++ b/configure
@@ -2350,11 +2350,11 @@ fi
 #
 echo_n "Checking endianness... "
 cat > tmp_endianness_check.cpp << EOF
-unsigned short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
-unsigned short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+__attribute__ ((used)) unsigned short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+__attribute__ ((used)) unsigned short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
 void _ascii() { char* s = (char*) ascii_mm; s = (char*) ascii_ii; }
-unsigned short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
-unsigned short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+__attribute__ ((used)) unsigned short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+__attribute__ ((used)) unsigned short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
 void _ebcdic() { char* s = (char*) ebcdic_mm; s = (char*) ebcdic_ii; }
 int main() { _ascii (); _ebcdic (); return 0; }
 EOF