Add compiler hardening flags.

config.h.in

@@ -16,9 +16,6 @@
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
-/* Define to 1 if you have the `memset' function. */
-#undef HAVE_MEMSET
-
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for bc-sskr 0.2.0.
+# Generated by GNU Autoconf 2.69 for bc-sskr 0.3.0.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -577,8 +577,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='bc-sskr'
 PACKAGE_TARNAME='bc-sskr'
-PACKAGE_VERSION='0.2.0'
-PACKAGE_STRING='bc-sskr 0.2.0'
+PACKAGE_VERSION='0.3.0'
+PACKAGE_STRING='bc-sskr 0.3.0'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
@@ -1225,7 +1225,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures bc-sskr 0.2.0 to adapt to many kinds of systems.
+\`configure' configures bc-sskr 0.3.0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1286,7 +1286,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of bc-sskr 0.2.0:";;
+     short | recursive ) echo "Configuration of bc-sskr 0.3.0:";;
    esac
   cat <<\_ACEOF
 
@@ -1366,7 +1366,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-bc-sskr configure 0.2.0
+bc-sskr configure 0.3.0
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1768,78 +1768,11 @@ $as_echo "$ac_res" >&6; }
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_find_uintX_t
-
-# ac_fn_c_check_func LINENO FUNC VAR
-# ----------------------------------
-# Tests whether FUNC exists, setting the cache variable VAR accordingly
-ac_fn_c_check_func ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $2 innocuous_$2
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $2 (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $2
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char $2 ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined __stub_$2 || defined __stub___$2
-choke me
-#endif
-
-int
-main ()
-{
-return $2 ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  eval "$3=yes"
-else
-  eval "$3=no"
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-fi
-eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-
-} # ac_fn_c_check_func
 cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by bc-sskr $as_me 0.2.0, which was
+It was created by bc-sskr $as_me 0.3.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -3827,17 +3760,6 @@ $as_echo "#define malloc rpl_malloc" >>confdefs.h
 fi
 
 
-for ac_func in memset
-do :
-  ac_fn_c_check_func "$LINENO" "memset" "ac_cv_func_memset"
-if test "x$ac_cv_func_memset" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_MEMSET 1
-_ACEOF
-
-fi
-done
-
 
 ac_config_files="$ac_config_files Makefile src/Makefile test/Makefile"
 
@@ -4347,7 +4269,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by bc-sskr $as_me 0.2.0, which was
+This file was extended by bc-sskr $as_me 0.3.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -4409,7 +4331,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-bc-sskr config.status 0.2.0
+bc-sskr config.status 0.3.0
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 

src/Makefile.in

@@ -27,7 +27,8 @@ RED=`tput setaf 1`
 GREEN=`tput setaf 2`
 RESET=`tput sgr0`
 
-CFLAGS += -g -O0
+CPPFLAGS += -D_FORTIFY_SOURCE=2
+CFLAGS += -O2 -fstack-protector-all
 ARFLAGS = rcs
 
 OBJS = encoding.o

test/Makefile.in

@@ -27,7 +27,8 @@ RED=`tput setaf 1`
 GREEN=`tput setaf 2`
 RESET=`tput sgr0`
 
-CFLAGS += -g -O0
+CPPFLAGS += -D_FORTIFY_SOURCE=2
+CFLAGS += -g -O2 -fstack-protector-all
 
 .PHONY: all
 all: test