Somewhere along the build changes, -export-dynamic was lost.

Readd it.

Noticed by: Stanislav Malyshev

Makefile.global

@@ -15,10 +15,10 @@ libphp4.la: $(PHP_GLOBAL_OBJS) $(PHP_SAPI_OBJS)
 	$(LIBTOOL) --mode=link $(CC) $(COMMON_FLAGS) $(CFLAGS) $(EXTRA_CFLAGS) -rpath $(phptempdir) $(EXTRA_LDFLAGS) $(LDFLAGS) $(PHP_RPATHS) $(PHP_GLOBAL_OBJS) $(PHP_SAPI_OBJS) $(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@
 
 php: $(PHP_GLOBAL_OBJS) $(PHP_SAPI_OBJS)
-	$(LIBTOOL) --mode=link $(CC)  $(COMMON_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS) $(PHP_RPATHS) $(PHP_GLOBAL_OBJS) $(PHP_SAPI_OBJS) $(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@
+	$(LIBTOOL) --mode=link $(CC) -export-dynamic $(COMMON_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS) $(PHP_RPATHS) $(PHP_GLOBAL_OBJS) $(PHP_SAPI_OBJS) $(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@
 
 sapi/cli/php: $(PHP_GLOBAL_OBJS) $(PHP_CLI_OBJS)
-	$(LIBTOOL) --mode=link $(CC)  $(COMMON_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS) $(PHP_RPATHS) $(PHP_GLOBAL_OBJS) $(PHP_CLI_OBJS) $(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@
+	$(LIBTOOL) --mode=link $(CC) -export-dynamic $(COMMON_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS) $(PHP_RPATHS) $(PHP_GLOBAL_OBJS) $(PHP_CLI_OBJS) $(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@
 
 install: $(install_targets)