diff --git a/configure b/configure
index 6b7b6d10d..2f2f154be 100755
--- a/configure
+++ b/configure
@@ -1465,7 +1465,7 @@ esac
       fi
     
 else
-  if true; then # release (false) or development (true)
+  if false; then # release (false) or development (true)
        # Warnings enabled by default (development)
        for flag in $WARN_CFLAGS; do
          case "$CFLAGS" in
@@ -1661,7 +1661,7 @@ else
 int main() {
 
 /* Ultrix mips cc rejects this.  */
-typedef int charset[2]; const charset x;
+typedef int charset[2]; const charset x = {0,0};
 /* SunOS 4.1.1 cc rejects this.  */
 char const *const *ccp;
 char **p;
@@ -1736,7 +1736,7 @@ for ac_kw in inline __inline__ __inline; do
 #include "confdefs.h"
 
 int main() {
-} $ac_kw foo() {
+} int $ac_kw foo() {
 ; return 0; }
 EOF
 if { (eval echo configure:1743: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
@@ -3142,7 +3142,7 @@ else
 #include "confdefs.h"
 #include <alloca.h>
 int main() {
-char *p = alloca(2 * sizeof(int));
+void *p = alloca(2 * sizeof(int));
 ; return 0; }
 EOF
 if { (eval echo configure:3149: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
@@ -3495,12 +3495,15 @@ else
 #include <sys/types.h>
 #include <fcntl.h>
 #include <sys/mman.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
 
 /* This mess was copied from the GNU getpagesize.h.  */
 #ifndef HAVE_GETPAGESIZE
-# ifdef HAVE_UNISTD_H
-#  include <unistd.h>
-# endif
 
 /* Assume that all systems that can run configure have sys/param.h.  */
 # ifndef HAVE_SYS_PARAM_H
@@ -3555,7 +3558,7 @@ main()
 	/*
 	 * First, make a file with some known garbage in it.
 	 */
-	data = malloc(pagesize);
+	data = (char*)malloc(pagesize);
 	if (!data)
 		exit(1);
 	for (i = 0; i < pagesize; ++i)
@@ -3576,7 +3579,7 @@ main()
 	fd = open("conftestmmap", O_RDWR);
 	if (fd < 0)
 		exit(1);
-	data2 = malloc(2 * pagesize);
+	data2 = (char*)malloc(2 * pagesize);
 	if (!data2)
 		exit(1);
 	data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
@@ -3594,7 +3597,7 @@ main()
 	 */
 	for (i = 0; i < pagesize; ++i)
 		*(data2 + i) = *(data2 + i) + 1;
-	data3 = malloc(pagesize);
+	data3 = (char*)malloc(pagesize);
 	if (!data3)
 		exit(1);
 	if (read(fd, data3, pagesize) != pagesize)
@@ -3608,7 +3611,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:3612: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3615: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_mmap_fixed_mapped=yes
 else
@@ -3636,12 +3639,12 @@ for ac_func in atexit ioperm mkdir scsireq_enter sigprocmask \
     getenv isfdtype vsyslog
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3640: checking for $ac_func" >&5
+echo "configure:3643: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3645 "configure"
+#line 3648 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3664,7 +3667,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3668: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3671: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3690,7 +3693,7 @@ done
 
 
   echo $ac_n "checking linker parameter to set runtime link path""... $ac_c" 1>&6
-echo "configure:3694: checking linker parameter to set runtime link path" >&5
+echo "configure:3697: checking linker parameter to set runtime link path" >&5
 if eval "test \"`echo '$''{'LINKER_RPATH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3783,7 +3786,7 @@ fi
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:3787: checking for $ac_word" >&5
+echo "configure:3790: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3811,7 +3814,7 @@ else
 fi
 
 echo $ac_n "checking for BSD-compatible nm""... $ac_c" 1>&6
-echo "configure:3815: checking for BSD-compatible nm" >&5
+echo "configure:3818: checking for BSD-compatible nm" >&5
 if eval "test \"`echo '$''{'ac_cv_path_NM'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3848,7 +3851,7 @@ echo "$ac_t""$NM" 1>&6
 
 
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:3852: checking whether ln -s works" >&5
+echo "configure:3855: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3898,8 +3901,8 @@ test x"$silent" = xyes && libtool_flags="$libtool_flags --silent"
 case "$host" in
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 3902 "configure"' > conftest.$ac_ext
-  if { (eval echo configure:3903: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  echo '#line 3905 "configure"' > conftest.$ac_ext
+  if { (eval echo configure:3906: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
     case "`/usr/bin/file conftest.o`" in
     *32-bit*)
       LD="${LD-ld} -32"
@@ -3920,7 +3923,7 @@ case "$host" in
   SAVE_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS -belf"
   echo $ac_n "checking whether the C compiler needs -belf""... $ac_c" 1>&6
-echo "configure:3924: checking whether the C compiler needs -belf" >&5
+echo "configure:3927: checking whether the C compiler needs -belf" >&5
 if eval "test \"`echo '$''{'lt_cv_cc_needs_belf'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3933,14 +3936,14 @@ ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$a
 cross_compiling=$ac_cv_prog_cc_cross
 
      cat > conftest.$ac_ext <<EOF
-#line 3937 "configure"
+#line 3940 "configure"
 #include "confdefs.h"
 
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:3944: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3947: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   lt_cv_cc_needs_belf=yes
 else
@@ -3970,7 +3973,7 @@ echo "$ac_t""$lt_cv_cc_needs_belf" 1>&6
   # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
 set dummy ${ac_tool_prefix}dlltool; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:3974: checking for $ac_word" >&5
+echo "configure:3977: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4002,7 +4005,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "dlltool", so it can be a program name with args.
 set dummy dlltool; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:4006: checking for $ac_word" >&5
+echo "configure:4009: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_DLLTOOL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4037,7 +4040,7 @@ fi
   # Extract the first word of "${ac_tool_prefix}as", so it can be a program name with args.
 set dummy ${ac_tool_prefix}as; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:4041: checking for $ac_word" >&5
+echo "configure:4044: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AS'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4069,7 +4072,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "as", so it can be a program name with args.
 set dummy as; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:4073: checking for $ac_word" >&5
+echo "configure:4076: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AS'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4104,7 +4107,7 @@ fi
   # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
 set dummy ${ac_tool_prefix}objdump; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:4108: checking for $ac_word" >&5
+echo "configure:4111: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_OBJDUMP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4136,7 +4139,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "objdump", so it can be a program name with args.
 set dummy objdump; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:4140: checking for $ac_word" >&5
+echo "configure:4143: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_OBJDUMP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4375,7 +4378,7 @@ fi
 # Extract the first word of "sane-config", so it can be a program name with args.
 set dummy sane-config; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:4379: checking for $ac_word" >&5
+echo "configure:4382: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_SANE_CONFIG_PATH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4409,7 +4412,7 @@ else
 fi
 
 echo $ac_n "checking for sane_init in -lsane""... $ac_c" 1>&6
-echo "configure:4413: checking for sane_init in -lsane" >&5
+echo "configure:4416: checking for sane_init in -lsane" >&5
 ac_lib_var=`echo sane'_'sane_init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4417,7 +4420,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsane  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4421 "configure"
+#line 4424 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -4428,7 +4431,7 @@ int main() {
 sane_init()
 ; return 0; }
 EOF
-if { (eval echo configure:4432: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4435: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
diff --git a/configure.in b/configure.in
index 43616eaf9..3e0c7ea21 100644
--- a/configure.in
+++ b/configure.in
@@ -81,7 +81,7 @@ if test "${ac_cv_prog_gcc}" = "yes"; then
         done
       fi
     ],
-    [if true; then # release (false) or development (true)
+    [if false; then # release (false) or development (true)
        # Warnings enabled by default (development)
        for flag in $WARN_CFLAGS; do
          JAPHAR_GREP_CFLAGS($flag, [ CFLAGS="$CFLAGS $flag" ])