test for dlerror() added

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7002 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

configure

@@ -9427,7 +9427,7 @@ else
 int main() {
 
 /* Ultrix mips cc rejects this.  */
-typedef int charset[2]; const charset x = {0,0};
+typedef int charset[2]; const charset x;
 /* SunOS 4.1.1 cc rejects this.  */
 char const *const *ccp;
 char **p;
@@ -9502,7 +9502,7 @@ for ac_kw in inline __inline__ __inline; do
 #include "confdefs.h"
 
 int main() {
-} int $ac_kw foo() {
+} $ac_kw foo() {
 ; return 0; }
 EOF
 if { (eval echo configure:9509: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
@@ -13401,6 +13401,110 @@ fi
 done
 
 
+        if test "$HAVE_DL_FUNCS" = 1; then
+        for ac_func in dlerror
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:13409: 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 13414 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:13437: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+ cat >> confdefs.h <<\EOF
+#define HAVE_DLERROR 1
+EOF
+
+else
+  echo "$ac_t""no" 1>&6
+echo $ac_n "checking for dlerror in -ldl""... $ac_c" 1>&6
+echo "configure:13462: checking for dlerror in -ldl" >&5
+ac_lib_var=`echo dl'_'dlerror | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-ldl  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 13470 "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
+    builtin and then its argument prototype would still apply.  */
+char dlerror();
+
+int main() {
+dlerror()
+; return 0; }
+EOF
+if { (eval echo configure:13481: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  cat >> confdefs.h <<\EOF
+#define HAVE_DLERROR 1
+EOF
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+fi
+done
+
+    fi
+
     if test "$HAVE_DL_FUNCS" = 0; then
         if test "$HAVE_SHL_FUNCS" = 0; then
           if test "$USE_UNIX" = 1; then
@@ -13598,17 +13702,17 @@ if test "$wxUSE_DRAG_AND_DROP" = "yes" ; then
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:13602: checking for $ac_hdr" >&5
+echo "configure:13706: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 13607 "configure"
+#line 13711 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:13612: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:13716: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -14161,7 +14265,7 @@ SAMPLES_SUBDIRS="`echo $SAMPLES_SUBDIRS | tr -s ' ' | tr ' ' '\n' | sort | uniq
 
 
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:14165: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:14269: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6

configure.in

@@ -3173,6 +3173,13 @@ if test "$wxUSE_DYNLIB_CLASS" = "yes"; then
                         ])
         ])
 
+    dnl check also for dlerror()
+    if test "$HAVE_DL_FUNCS" = 1; then
+        AC_CHECK_FUNCS(dlerror,
+                       AC_DEFINE(HAVE_DLERROR),
+                       AC_CHECK_LIB(dl, dlerror, AC_DEFINE(HAVE_DLERROR)))
+    fi
+
     if test "$HAVE_DL_FUNCS" = 0; then
         if test "$HAVE_SHL_FUNCS" = 0; then
           if test "$USE_UNIX" = 1; then