re-enabled extra gcc-warnings

diff --git a/ChangeLog b/ChangeLog
index 58d8517d9da687a28907840612020316abb083c1..692445bcda293fbba186d2a7bb8bacdcb6805f90 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2009-08-16  guidod  <guidod@gmx.de>
 
+       * configure.ac: reorder ax_gcc_flags as the extra options were
+         disabled (do not know why) and add -Wstrict-aliasing to the set.
+         Then fix issues in source files (mostly signed-comparision warnings)
        * zzip/file.c (zzip_file_open): ZZIP_CASELESS will include a
           mapping of "\" into "/" to get away with windows-orientied
           programs. The backslash however is only active for those

diff --git a/configure b/configure
index 0a1c2ce4df78182b95161e1ebda93dd186918ac7..edce447e1e939ed0357ed243b3665d8b26ebcefe 100755 (executable)
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 1.13 .
+# From configure.ac Revision: 1.14 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.63.
 #
@@ -15933,7 +15933,7 @@ fi
 { $as_echo "$as_me:$LINENO: checking whether system differentiates 64bit off_t by defines" >&5
 $as_echo_n "checking whether system differentiates 64bit off_t by defines... " >&6; }
 ac_cv_sys_largefile_sensitive="no"
-if test ".$ac_cv_sys_file_offset_bits$ac_cv_sys_large_files" != ".nono"
+if test ".${ac_cv_sys_file_offset_bits-no}${ac_cv_sys_large_files-no}" != ".nono"
 then ac_cv_sys_largefile_sensitive="yes"
 
 cat >>confdefs.h <<\_ACEOF
@@ -16177,7 +16177,7 @@ case "$host_os" in
   ;;
   *)
 
-    if ".$can_build_shared" = .no
+    if test ".$can_build_shared" = .no
     then ZZIPLIB_LDFLAGS=""
     else ZZIPLIB_LDFLAGS="--export-dynamic"
     fi
@@ -16322,12 +16322,12 @@ case ".$ac_cv_cflags_warn_all" in
  ;;
 esac
 
-{ $as_echo "$as_me:$LINENO: checking CFLAGS making strings readonly" >&5
-$as_echo_n "checking CFLAGS making strings readonly... " >&6; }
-if test "${ac_cv_cflags_no_writable_strings+set}" = set; then
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wpointer-arith" >&5
+$as_echo_n "checking CFLAGS for gcc -Wpointer-arith... " >&6; }
+if test "${ac_cv_cflags_gcc_option__Wpointer_arith+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  ac_cv_cflags_no_writable_strings="no, unknown"
+  ac_cv_cflags_gcc_option__Wpointer_arith="no, unknown"
 
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16336,12 +16336,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
  ac_save_CFLAGS="$CFLAGS"
-# IRIX C compiler:
-#      -use_readonly_const is the default for IRIX C,
-#       puts them into .rodata, but they are copied later.
-#       need to be "-G0 -rdatashared" for strictmode but
-#       I am not sure what effect that has really.         - guidod
-for ac_arg in "-pedantic % -fno-writable-strings -Wwrite-strings"    "-pedantic % -fconst-strings -Wwrite-strings"    "-v -Xc    % -xstrconst"    "+w1 -Aa   % +ESlit"         "-w0 -std1 % -readonly_strings"    "-fullwarn -use_readonly_const %% ok, its the default"    #
+for ac_arg in "-pedantic -Werror % -Wpointer-arith"     "-pedantic % -Wpointer-arith %% no, obsolete"     #
 do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -16376,7 +16371,7 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_cv_cflags_no_writable_strings=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
+  ac_cv_cflags_gcc_option__Wpointer_arith=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -16386,23 +16381,64 @@ fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 done
-case ".$ac_cv_cflags_no_writable_strings" in
-   .|.no|.no,*) ;;
-   *) # sanity check - testing strcpy() from string.h
-      cp config.log config.tmp
-      cat >conftest.$ac_ext <<_ACEOF
+ CFLAGS="$ac_save_CFLAGS"
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wpointer_arith" >&5
+$as_echo "$ac_cv_cflags_gcc_option__Wpointer_arith" >&6; }
+case ".$ac_cv_cflags_gcc_option__Wpointer_arith" in
+     .ok|.ok,*)  ;;
+   .|.no|.no,*)  ;;
+   *)
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wpointer_arith " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wpointer_arith") >&5
+  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wpointer_arith) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wpointer_arith\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wpointer_arith") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wpointer_arith"
+   fi
+ ;;
+esac
+
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wsign-compare" >&5
+$as_echo_n "checking CFLAGS for gcc -Wsign-compare... " >&6; }
+if test "${ac_cv_cflags_gcc_option__Wsign_compare+set}" = set; then
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_cflags_gcc_option__Wsign_compare="no, unknown"
+
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ ac_save_CFLAGS="$CFLAGS"
+for ac_arg in "-pedantic -Werror % -Wsign-compare"     "-pedantic % -Wsign-compare %% no, obsolete"     #
+do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <string.h>
+
 int
 main ()
 {
-
-      char test[16];
-      if (strcpy (test, "test")) return 1;
+return 0;
   ;
   return 0;
 }
@@ -16425,21 +16461,18 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-        if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
-  then ac_cv_cflags_no_writable_strings="no, suppressed, string.h," ; fi
+  ac_cv_cflags_gcc_option__Wsign_compare=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-       ac_cv_cflags_no_writable_strings="no, suppressed, string.h"
+
 fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-      rm config.tmp
-   ;;
-esac
-   CFLAGS="$ac_save_CFLAGS"
-   ac_ext=c
+done
+ CFLAGS="$ac_save_CFLAGS"
+ ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -16447,35 +16480,34 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_no_writable_strings" >&5
-$as_echo "$ac_cv_cflags_no_writable_strings" >&6; }
-case ".$ac_cv_cflags_no_writable_strings" in
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wsign_compare" >&5
+$as_echo "$ac_cv_cflags_gcc_option__Wsign_compare" >&6; }
+case ".$ac_cv_cflags_gcc_option__Wsign_compare" in
      .ok|.ok,*)  ;;
-   .|.no|.no,*)
- ;;
+   .|.no|.no,*)  ;;
    *)
-   if echo " $CFLAGS " | grep " $ac_cv_cflags_no_writable_strings " 2>&1 >/dev/null
-   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_no_writable_strings") >&5
-  (: CFLAGS does contain $ac_cv_cflags_no_writable_strings) 2>&5
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wsign_compare " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wsign_compare") >&5
+  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wsign_compare) 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_no_writable_strings\"") >&5
-  (: CFLAGS="$CFLAGS $ac_cv_cflags_no_writable_strings") 2>&5
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wsign_compare\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wsign_compare") 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-                      CFLAGS="$CFLAGS $ac_cv_cflags_no_writable_strings"
+                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wsign_compare"
    fi
  ;;
 esac
 
-{ $as_echo "$as_me:$LINENO: checking CFLAGS for strict prototypes" >&5
-$as_echo_n "checking CFLAGS for strict prototypes... " >&6; }
-if test "${ac_cv_cflags_strict_prototypes+set}" = set; then
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wmissing-declarations" >&5
+$as_echo_n "checking CFLAGS for gcc -Wmissing-declarations... " >&6; }
+if test "${ac_cv_cflags_gcc_option__Wmissing_declarations+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  ac_cv_cflags_strict_prototypes="no, unknown"
+  ac_cv_cflags_gcc_option__Wmissing_declarations="no, unknown"
 
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16484,7 +16516,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
  ac_save_CFLAGS="$CFLAGS"
-for ac_arg in "-pedantic % -fstrict-prototypes -Wstrict-prototypes"    "-pedantic % -Wstrict-prototypes"    "-pedantic % -Wmissing-prototypes"    "-pedantic % -Werror-implicit-function-declaration"    "-pedantic % -Wimplicit-function-declaration"    #
+for ac_arg in "-pedantic -Werror % -Wmissing-declarations"     "-pedantic % -Wmissing-declarations %% no, obsolete"     #
 do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -16519,7 +16551,7 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_cv_cflags_strict_prototypes=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
+  ac_cv_cflags_gcc_option__Wmissing_declarations=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -16529,23 +16561,64 @@ fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 done
-case ".$ac_cv_cflags_strict_prototypes" in
-   .|.no|.no,*) ;;
-   *) # sanity check with signal() from sys/signal.h
-    cp config.log config.tmp
-    cat >conftest.$ac_ext <<_ACEOF
+ CFLAGS="$ac_save_CFLAGS"
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wmissing_declarations" >&5
+$as_echo "$ac_cv_cflags_gcc_option__Wmissing_declarations" >&6; }
+case ".$ac_cv_cflags_gcc_option__Wmissing_declarations" in
+     .ok|.ok,*)  ;;
+   .|.no|.no,*)  ;;
+   *)
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wmissing_declarations " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wmissing_declarations") >&5
+  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wmissing_declarations) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wmissing_declarations\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wmissing_declarations") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wmissing_declarations"
+   fi
+ ;;
+esac
+
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wdeclaration-after-statement" >&5
+$as_echo_n "checking CFLAGS for gcc -Wdeclaration-after-statement... " >&6; }
+if test "${ac_cv_cflags_gcc_option__Wdeclaration_after_statement+set}" = set; then
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_cflags_gcc_option__Wdeclaration_after_statement="no, unknown"
+
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ ac_save_CFLAGS="$CFLAGS"
+for ac_arg in "-pedantic -Werror % -Wdeclaration-after-statement"     "-pedantic % -Wdeclaration-after-statement %% no, obsolete"     #
+do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <signal.h>
+
 int
 main ()
 {
-
-    if (signal (SIGINT, SIG_IGN) == SIG_DFL) return 1;
-    if (signal (SIGINT, SIG_IGN) != SIG_DFL) return 2;
+return 0;
   ;
   return 0;
 }
@@ -16568,20 +16641,16 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-      if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
-then if test `diff config.log config.tmp | grep -i warning | wc -l` != 1
-then ac_cv_cflags_strict_prototypes="no, suppressed, signal.h," ; fi ; fi
+  ac_cv_cflags_gcc_option__Wdeclaration_after_statement=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-       ac_cv_cflags_strict_prototypes="no, suppressed, signal.h"
+
 fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-    rm config.tmp
-  ;;
-esac
+done
  CFLAGS="$ac_save_CFLAGS"
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16591,35 +16660,34 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_strict_prototypes" >&5
-$as_echo "$ac_cv_cflags_strict_prototypes" >&6; }
-case ".$ac_cv_cflags_strict_prototypes" in
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wdeclaration_after_statement" >&5
+$as_echo "$ac_cv_cflags_gcc_option__Wdeclaration_after_statement" >&6; }
+case ".$ac_cv_cflags_gcc_option__Wdeclaration_after_statement" in
      .ok|.ok,*)  ;;
-   .|.no|.no,*)
- ;;
+   .|.no|.no,*)  ;;
    *)
-   if echo " $CFLAGS " | grep " $ac_cv_cflags_strict_prototypes " 2>&1 >/dev/null
-   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_strict_prototypes") >&5
-  (: CFLAGS does contain $ac_cv_cflags_strict_prototypes) 2>&5
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wdeclaration_after_statement " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wdeclaration_after_statement") >&5
+  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wdeclaration_after_statement) 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_strict_prototypes\"") >&5
-  (: CFLAGS="$CFLAGS $ac_cv_cflags_strict_prototypes") 2>&5
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wdeclaration_after_statement\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wdeclaration_after_statement") 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-                      CFLAGS="$CFLAGS $ac_cv_cflags_strict_prototypes"
+                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wdeclaration_after_statement"
    fi
  ;;
 esac
 
-{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wpointer-arith" >&5
-$as_echo_n "checking CFLAGS for gcc -Wpointer-arith... " >&6; }
-if test "${ac_cv_cflags_gcc_option__Wpointer_arith+set}" = set; then
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Werror-implicit-function-declaration" >&5
+$as_echo_n "checking CFLAGS for gcc -Werror-implicit-function-declaration... " >&6; }
+if test "${ac_cv_cflags_gcc_option__Werror_implicit_function_declaration+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  ac_cv_cflags_gcc_option__Wpointer_arith="no, unknown"
+  ac_cv_cflags_gcc_option__Werror_implicit_function_declaration="no, unknown"
 
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16628,7 +16696,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
  ac_save_CFLAGS="$CFLAGS"
-for ac_arg in "-pedantic -Werror % -Wpointer-arith"     "-pedantic % -Wpointer-arith %% no, obsolete"     #
+for ac_arg in "-pedantic -Werror % -Werror-implicit-function-declaration"     "-pedantic % -Werror-implicit-function-declaration %% no, obsolete"     #
 do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -16663,7 +16731,7 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_cv_cflags_gcc_option__Wpointer_arith=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
+  ac_cv_cflags_gcc_option__Werror_implicit_function_declaration=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -16682,34 +16750,34 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wpointer_arith" >&5
-$as_echo "$ac_cv_cflags_gcc_option__Wpointer_arith" >&6; }
-case ".$ac_cv_cflags_gcc_option__Wpointer_arith" in
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration" >&5
+$as_echo "$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration" >&6; }
+case ".$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration" in
      .ok|.ok,*)  ;;
    .|.no|.no,*)  ;;
    *)
-   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wpointer_arith " 2>&1 >/dev/null
-   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wpointer_arith") >&5
-  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wpointer_arith) 2>&5
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration") >&5
+  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration) 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wpointer_arith\"") >&5
-  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wpointer_arith") 2>&5
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration") 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wpointer_arith"
+                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration"
    fi
  ;;
 esac
 
-{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wsign-compare" >&5
-$as_echo_n "checking CFLAGS for gcc -Wsign-compare... " >&6; }
-if test "${ac_cv_cflags_gcc_option__Wsign_compare+set}" = set; then
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wstrict-aliasing" >&5
+$as_echo_n "checking CFLAGS for gcc -Wstrict-aliasing... " >&6; }
+if test "${ac_cv_cflags_gcc_option__Wstrict_aliasing+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  ac_cv_cflags_gcc_option__Wsign_compare="no, unknown"
+  ac_cv_cflags_gcc_option__Wstrict_aliasing="no, unknown"
 
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16718,7 +16786,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
  ac_save_CFLAGS="$CFLAGS"
-for ac_arg in "-pedantic -Werror % -Wsign-compare"     "-pedantic % -Wsign-compare %% no, obsolete"     #
+for ac_arg in "-pedantic -Werror % -Wstrict-aliasing"     "-pedantic % -Wstrict-aliasing %% no, obsolete"     #
 do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -16753,7 +16821,7 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_cv_cflags_gcc_option__Wsign_compare=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
+  ac_cv_cflags_gcc_option__Wstrict_aliasing=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -16772,34 +16840,34 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wsign_compare" >&5
-$as_echo "$ac_cv_cflags_gcc_option__Wsign_compare" >&6; }
-case ".$ac_cv_cflags_gcc_option__Wsign_compare" in
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wstrict_aliasing" >&5
+$as_echo "$ac_cv_cflags_gcc_option__Wstrict_aliasing" >&6; }
+case ".$ac_cv_cflags_gcc_option__Wstrict_aliasing" in
      .ok|.ok,*)  ;;
    .|.no|.no,*)  ;;
    *)
-   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wsign_compare " 2>&1 >/dev/null
-   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wsign_compare") >&5
-  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wsign_compare) 2>&5
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wstrict_aliasing " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wstrict_aliasing") >&5
+  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wstrict_aliasing) 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wsign_compare\"") >&5
-  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wsign_compare") 2>&5
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wstrict_aliasing\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wstrict_aliasing") 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wsign_compare"
+                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wstrict_aliasing"
    fi
  ;;
 esac
 
-{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wmissing-declarations" >&5
-$as_echo_n "checking CFLAGS for gcc -Wmissing-declarations... " >&6; }
-if test "${ac_cv_cflags_gcc_option__Wmissing_declarations+set}" = set; then
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Warray-bounds" >&5
+$as_echo_n "checking CFLAGS for gcc -Warray-bounds... " >&6; }
+if test "${ac_cv_cflags_gcc_option__Warray_bounds+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  ac_cv_cflags_gcc_option__Wmissing_declarations="no, unknown"
+  ac_cv_cflags_gcc_option__Warray_bounds="no, unknown"
 
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16808,7 +16876,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
  ac_save_CFLAGS="$CFLAGS"
-for ac_arg in "-pedantic -Werror % -Wmissing-declarations"     "-pedantic % -Wmissing-declarations %% no, obsolete"     #
+for ac_arg in "-pedantic -Werror % -Warray-bounds"     "-pedantic % -Warray-bounds %% no, obsolete"     #
 do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -16843,7 +16911,7 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_cv_cflags_gcc_option__Wmissing_declarations=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
+  ac_cv_cflags_gcc_option__Warray_bounds=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -16862,34 +16930,34 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wmissing_declarations" >&5
-$as_echo "$ac_cv_cflags_gcc_option__Wmissing_declarations" >&6; }
-case ".$ac_cv_cflags_gcc_option__Wmissing_declarations" in
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Warray_bounds" >&5
+$as_echo "$ac_cv_cflags_gcc_option__Warray_bounds" >&6; }
+case ".$ac_cv_cflags_gcc_option__Warray_bounds" in
      .ok|.ok,*)  ;;
    .|.no|.no,*)  ;;
    *)
-   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wmissing_declarations " 2>&1 >/dev/null
-   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wmissing_declarations") >&5
-  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wmissing_declarations) 2>&5
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Warray_bounds " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Warray_bounds") >&5
+  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Warray_bounds) 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wmissing_declarations\"") >&5
-  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wmissing_declarations") 2>&5
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Warray_bounds\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Warray_bounds") 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wmissing_declarations"
+                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Warray_bounds"
    fi
  ;;
 esac
 
-{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Wdeclaration-after-statement" >&5
-$as_echo_n "checking CFLAGS for gcc -Wdeclaration-after-statement... " >&6; }
-if test "${ac_cv_cflags_gcc_option__Wdeclaration_after_statement+set}" = set; then
+{ $as_echo "$as_me:$LINENO: checking CFLAGS making strings readonly" >&5
+$as_echo_n "checking CFLAGS making strings readonly... " >&6; }
+if test "${ac_cv_cflags_no_writable_strings+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  ac_cv_cflags_gcc_option__Wdeclaration_after_statement="no, unknown"
+  ac_cv_cflags_no_writable_strings="no, unknown"
 
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16898,7 +16966,12 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
  ac_save_CFLAGS="$CFLAGS"
-for ac_arg in "-pedantic -Werror % -Wdeclaration-after-statement"     "-pedantic % -Wdeclaration-after-statement %% no, obsolete"     #
+# IRIX C compiler:
+#      -use_readonly_const is the default for IRIX C,
+#       puts them into .rodata, but they are copied later.
+#       need to be "-G0 -rdatashared" for strictmode but
+#       I am not sure what effect that has really.         - guidod
+for ac_arg in "-pedantic % -fno-writable-strings -Wwrite-strings"    "-pedantic % -fconst-strings -Wwrite-strings"    "-v -Xc    % -xstrconst"    "+w1 -Aa   % +ESlit"         "-w0 -std1 % -readonly_strings"    "-fullwarn -use_readonly_const %% ok, its the default"    #
 do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -16933,7 +17006,7 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_cv_cflags_gcc_option__Wdeclaration_after_statement=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
+  ac_cv_cflags_no_writable_strings=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -16943,8 +17016,60 @@ fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 done
- CFLAGS="$ac_save_CFLAGS"
- ac_ext=c
+case ".$ac_cv_cflags_no_writable_strings" in
+   .|.no|.no,*) ;;
+   *) # sanity check - testing strcpy() from string.h
+      cp config.log config.tmp
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+int
+main ()
+{
+
+      char test[16];
+      if (strcpy (test, "test")) return 1;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
+$as_echo "$ac_try_echo") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+        test -z "$ac_c_werror_flag" ||
+        test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+        if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+  then ac_cv_cflags_no_writable_strings="no, suppressed, string.h," ; fi
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_cv_cflags_no_writable_strings="no, suppressed, string.h"
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+      rm config.tmp
+   ;;
+esac
+   CFLAGS="$ac_save_CFLAGS"
+   ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -16952,34 +17077,35 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Wdeclaration_after_statement" >&5
-$as_echo "$ac_cv_cflags_gcc_option__Wdeclaration_after_statement" >&6; }
-case ".$ac_cv_cflags_gcc_option__Wdeclaration_after_statement" in
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_no_writable_strings" >&5
+$as_echo "$ac_cv_cflags_no_writable_strings" >&6; }
+case ".$ac_cv_cflags_no_writable_strings" in
      .ok|.ok,*)  ;;
-   .|.no|.no,*)  ;;
+   .|.no|.no,*)
+ ;;
    *)
-   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Wdeclaration_after_statement " 2>&1 >/dev/null
-   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Wdeclaration_after_statement") >&5
-  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Wdeclaration_after_statement) 2>&5
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_no_writable_strings " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_no_writable_strings") >&5
+  (: CFLAGS does contain $ac_cv_cflags_no_writable_strings) 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Wdeclaration_after_statement\"") >&5
-  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wdeclaration_after_statement") 2>&5
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_no_writable_strings\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_no_writable_strings") 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Wdeclaration_after_statement"
+                      CFLAGS="$CFLAGS $ac_cv_cflags_no_writable_strings"
    fi
  ;;
 esac
 
-{ $as_echo "$as_me:$LINENO: checking CFLAGS for gcc -Werror-implicit-function-declaration" >&5
-$as_echo_n "checking CFLAGS for gcc -Werror-implicit-function-declaration... " >&6; }
-if test "${ac_cv_cflags_gcc_option__Werror_implicit_function_declaration+set}" = set; then
+{ $as_echo "$as_me:$LINENO: checking CFLAGS for strict prototypes" >&5
+$as_echo_n "checking CFLAGS for strict prototypes... " >&6; }
+if test "${ac_cv_cflags_strict_prototypes+set}" = set; then
   $as_echo_n "(cached) " >&6
 else
-  ac_cv_cflags_gcc_option__Werror_implicit_function_declaration="no, unknown"
+  ac_cv_cflags_strict_prototypes="no, unknown"
 
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -16988,7 +17114,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
  ac_save_CFLAGS="$CFLAGS"
-for ac_arg in "-pedantic -Werror % -Werror-implicit-function-declaration"     "-pedantic % -Werror-implicit-function-declaration %% no, obsolete"     #
+for ac_arg in "-pedantic % -fstrict-prototypes -Wstrict-prototypes"    "-pedantic % -Wstrict-prototypes"    "-pedantic % -Wmissing-prototypes"    "-pedantic % -Werror-implicit-function-declaration"    "-pedantic % -Wimplicit-function-declaration"    #
 do CFLAGS="$ac_save_CFLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -17023,7 +17149,7 @@ $as_echo "$ac_try_echo") >&5
         test -z "$ac_c_werror_flag" ||
         test ! -s conftest.err
        } && test -s conftest.$ac_objext; then
-  ac_cv_cflags_gcc_option__Werror_implicit_function_declaration=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
+  ac_cv_cflags_strict_prototypes=`echo $ac_arg | sed -e 's,.*% *,,'` ; break
 else
   $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -17033,6 +17159,59 @@ fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 done
+case ".$ac_cv_cflags_strict_prototypes" in
+   .|.no|.no,*) ;;
+   *) # sanity check with signal() from sys/signal.h
+    cp config.log config.tmp
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <signal.h>
+int
+main ()
+{
+
+    if (signal (SIGINT, SIG_IGN) == SIG_DFL) return 1;
+    if (signal (SIGINT, SIG_IGN) != SIG_DFL) return 2;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
+$as_echo "$ac_try_echo") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+        test -z "$ac_c_werror_flag" ||
+        test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+      if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+then if test `diff config.log config.tmp | grep -i warning | wc -l` != 1
+then ac_cv_cflags_strict_prototypes="no, suppressed, signal.h," ; fi ; fi
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_cv_cflags_strict_prototypes="no, suppressed, signal.h"
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    rm config.tmp
+  ;;
+esac
  CFLAGS="$ac_save_CFLAGS"
  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -17042,24 +17221,25 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 fi
-{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration" >&5
-$as_echo "$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration" >&6; }
-case ".$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration" in
+{ $as_echo "$as_me:$LINENO: result: $ac_cv_cflags_strict_prototypes" >&5
+$as_echo "$ac_cv_cflags_strict_prototypes" >&6; }
+case ".$ac_cv_cflags_strict_prototypes" in
      .ok|.ok,*)  ;;
-   .|.no|.no,*)  ;;
+   .|.no|.no,*)
+ ;;
    *)
-   if echo " $CFLAGS " | grep " $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration " 2>&1 >/dev/null
-   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration") >&5
-  (: CFLAGS does contain $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration) 2>&5
+   if echo " $CFLAGS " | grep " $ac_cv_cflags_strict_prototypes " 2>&1 >/dev/null
+   then { ($as_echo "$as_me:$LINENO: : CFLAGS does contain \$ac_cv_cflags_strict_prototypes") >&5
+  (: CFLAGS does contain $ac_cv_cflags_strict_prototypes) 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_gcc_option__Werror_implicit_function_declaration\"") >&5
-  (: CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration") 2>&5
+   else { ($as_echo "$as_me:$LINENO: : CFLAGS=\"\$CFLAGS \$ac_cv_cflags_strict_prototypes\"") >&5
+  (: CFLAGS="$CFLAGS $ac_cv_cflags_strict_prototypes") 2>&5
   ac_status=$?
   $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }
-                      CFLAGS="$CFLAGS $ac_cv_cflags_gcc_option__Werror_implicit_function_declaration"
+                      CFLAGS="$CFLAGS $ac_cv_cflags_strict_prototypes"
    fi
  ;;
 esac

diff --git a/configure.ac b/configure.ac
index 43dc21b5901a6d0809c6fac46b6fe175d8b05b3e..61486799e157d465fac4b8f6dc9c254878151f30 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 AC_INIT([zziplib.spec])
 AC_PREREQ(2.49)
 AC_COPYRIGHT([Guido Draheim <guido@gmx.de> for ZZipLib.SF.net])
-AC_REVISION($Revision: 1.14 $)
+AC_REVISION($Revision: 1.15 $)
 AC_CONFIG_AUX_DIR([uses])
 AC_CONFIG_MACRO_DIR([m4])
 # =======================================================================
@@ -286,7 +286,7 @@ case "$host_os" in
   ;;
   *)
 
-    if ".$can_build_shared" = .no
+    if test ".$can_build_shared" = .no
     then ZZIPLIB_LDFLAGS=""
     else ZZIPLIB_LDFLAGS="--export-dynamic"
     fi
@@ -300,13 +300,15 @@ AC_SUBST([RESOLVES])
 AX_MAINTAINER_MODE_AUTO_SILENT
 AX_NOT_ENABLE_FRAME_POINTER
 AX_CFLAGS_WARN_ALL
-AX_CFLAGS_NO_WRITABLE_STRINGS
-AX_CFLAGS_STRICT_PROTOTYPES
 AX_CFLAGS_GCC_OPTION(-Wpointer-arith)
 AX_CFLAGS_GCC_OPTION(-Wsign-compare)
 AX_CFLAGS_GCC_OPTION(-Wmissing-declarations)
 AX_CFLAGS_GCC_OPTION(-Wdeclaration-after-statement)
 AX_CFLAGS_GCC_OPTION(-Werror-implicit-function-declaration)
+AX_CFLAGS_GCC_OPTION(-Wstrict-aliasing)
+AX_CFLAGS_GCC_OPTION(-Warray-bounds)
+AX_CFLAGS_NO_WRITABLE_STRINGS
+AX_CFLAGS_STRICT_PROTOTYPES
 # ---------------------------------------------------------------
 AX_ENABLE_DEFAULT_PKGCONFIGDIR
 AX_ENABLE_DEFAULT_ACLOCALDIR

diff --git a/zzip/fseeko.c b/zzip/fseeko.c
index 0f9ce8d14b2d4d185b0b25500760da0a252329ef..d99067a0b4ff61af17a5404baf44d5581e7f46bf 100644 (file)
--- a/zzip/fseeko.c
+++ b/zzip/fseeko.c
@@ -51,6 +51,10 @@
 #include <strings.h>
 #endif
 
+#if   defined ZZIP_HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
 #if __STDC_VERSION__+0 > 199900L
 #define ___
 #define ____
@@ -188,9 +192,12 @@ prescan_entry(ZZIP_ENTRY * entry)
         entry->tail = newtail;
         entry->tailalloc = tailsize + 1;
     }
-    ___  zzip_size_t n = fread(entry->tail, 1, tailsize, entry->diskfile);
+#  ifdef SIZE_MAX /* from stdint.h */
+    if (tailsize > (zzip_off_t)(SIZE_MAX)) { return EFBIG; }
+#  endif
+    ___ zzip_size_t readsize = fread(entry->tail, 1, tailsize, entry->diskfile);
     /* name + comment + extras */
-    if (n != tailsize) {
+    if ((zzip_off_t)readsize != tailsize) {
         return errno;
     } else {
         return 0;
@@ -265,11 +272,12 @@ zzip_entry_findfirst(FILE * disk)
         mapoffs -= pagesize / 2;
         mapsize += pagesize / 2;
     }
+    assert(mapsize < 3*8192);
     while (1)
     {
         if (fseeko(disk, mapoffs, SEEK_SET) == -1)
             goto error;
-        if (fread(buffer, 1, mapsize, disk) != mapsize)
+        if (fread(buffer, 1, mapsize, disk) != (zzip_size_t)mapsize)
             goto error;
         ___ unsigned char *p =
             buffer + mapsize - sizeof(struct zzip_disk_trailer);

diff --git a/zzip/memdisk.c b/zzip/memdisk.c
index 9d3d38a3d9635786f3b76457c3348b7c30c3a777..dc00ea865087435dbab6ce2522ef294d7b0bce63 100644 (file)
--- a/zzip/memdisk.c
+++ b/zzip/memdisk.c
@@ -50,6 +50,7 @@ static const char *error[] = {
     "zzip_mem_disk_fdopen: zzip_disk_mmap did fail"
 #   define _zzip_mem_disk_buffer_fail 3
     "zzip_mem_disk_buffer: zzip_disk_buffer did fail",
+    0
 };
 
 #define ZZIP_EXTRA_zip64 0x0001

diff --git a/zzip/mmapped.c b/zzip/mmapped.c
index 25c63ccd2d56823ec046811a4613ebdcf417c830..3cdd6fc86396ec26f88204bde9223a91be1ecfc9 100644 (file)
--- a/zzip/mmapped.c
+++ b/zzip/mmapped.c
@@ -181,12 +181,12 @@ zzip_disk_open(char *filename)
  * own the buffer, it will neither be written nor free()d.
  */
 zzip__new__ ZZIP_DISK *
-zzip_disk_buffer(char *buffer, size_t buflen) {
+zzip_disk_buffer(void *buffer, size_t buflen) {
     ZZIP_DISK *disk = zzip_disk_new();
     if (disk)
     {
-        disk->buffer = buffer;
-        disk->endbuf = buffer + buflen;
+        disk->buffer = (zzip_byte_t *) buffer;
+        disk->endbuf = (zzip_byte_t *) buffer + buflen;
         disk->mapped = -1;
     }
     return disk;

diff --git a/zzip/mmapped.h b/zzip/mmapped.h
index fcc402f60042e06cce8bdca36d16877001ed26b5..ee2ba5ad8b648a078eb461afba786562c103eb2e 100644 (file)
--- a/zzip/mmapped.h
+++ b/zzip/mmapped.h
@@ -72,7 +72,7 @@ zzip_disk_extern zzip__new__ ZZIP_DISK*
 zzip_disk_open(char* filename);
 
 zzip_disk_extern zzip__new__ ZZIP_DISK *
-zzip_disk_buffer(char *buffer, size_t buflen);
+zzip_disk_buffer(void *buffer, size_t buflen);
 
 zzip_disk_extern int
 zzip_disk_close(ZZIP_DISK* disk);