package/urg: fix build with gcc-6

Add patch fixing/adding explicit cast on negative value in char[], which
is required with gcc-6 (see "Narrowing conversions" paragraph in [1])

Fixes:
  http://autobuild.buildroot.net/results/d0c/d0cd11163753db69a14c02e941dbda40e5f98bba/

[1] https://gcc.gnu.org/gcc-6/porting_to.html

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

1 files changed, 99 insertions, 0 deletions

diff --git a/package/urg/0002-urg-gcc6-fix-narrowing-conversion.patch b/package/urg/0002-urg-gcc6-fix-narrowing-conversion.patch
new file mode 100644
index 000000000..e3db89804
--- /dev/null
+++ b/package/urg/0002-urg-gcc6-fix-narrowing-conversion.patch
@@ -0,0 +1,99 @@
+urg: fix 'narrowing conversion' with gcc6
+
+Fixes:
+  http://autobuild.buildroot.net/results/d0c/d0cd11163753db69a14c02e941dbda40e5f98bba/
+
+Signed-off-by: Samuel Martin <s.martin49@gmail.com>
+
+--- a/src/cpp/urg/ScipHandler.cpp	2016-09-11 16:11:16.083995214 +0200
++++ b/src/cpp/urg/ScipHandler.cpp	2016-09-11 16:11:24.380832543 +0200
+@@ -120,7 +120,7 @@ struct ScipHandler::pImpl
+ 

+       // QT の発行

+       int return_code = -1;

+-      char qt_expected_response[] = { 0, -1 };

++      char qt_expected_response[] = { 0, (char)-1 };

+       // return_code を使いたいため、setLaserOutput() を用いずに QT を送信する

+       if (response(return_code, "QT\n", qt_expected_response)) {

+         laser_state_ = LaserOff;

+@@ -139,7 +139,7 @@ struct ScipHandler::pImpl
+ 

+       } else if (return_code == Scip11Response) {

+         // SCIP1.1 プロトコルの場合のみ、SCIP2.0 を送信する

+-        char scip20_expected_response[] = { 0, -1 };

++        char scip20_expected_response[] = { 0, (char)-1 };

+         if (! response(return_code, "SCIP2.0\n", scip20_expected_response)) {

+           error_message_ =

+             "SCIP1.1 protocol is not supported. Please update URG firmware, or reconnect after a few seconds because sensor is booting.";

+@@ -150,7 +150,7 @@ struct ScipHandler::pImpl
+ 

+       } else if (return_code == 0xE) {

+         // TM モードとみなし、TM2 を発行する

+-        char tm2_expected_response[] = { 0, -1 };

++        char tm2_expected_response[] = { 0, (char)-1 };

+         if (response(return_code, "TM2\n", tm2_expected_response)) {

+           laser_state_ = LaserOff;

+           return changeBothBaudrate(baudrate);

+@@ -202,7 +202,7 @@ struct ScipHandler::pImpl
+     snprintf(send_buffer, 10, "SS%06ld\n", baudrate);

+     int return_code = -1;

+     // !!! 既に設定対象のボーレート、の場合の戻り値を ss_expected... に追加する

+-    char ss_expected_response[] = { 0, 0x3, 0x4, 0xf, -1 };

++    char ss_expected_response[] = { 0, 0x3, 0x4, 0xf, (char)-1 };

+     if (! response(return_code, send_buffer, ss_expected_response)) {

+       error_message_ = "Baudrate change fail.";

+       return false;

+@@ -216,7 +216,7 @@ struct ScipHandler::pImpl
+   {

+     // PP の送信とデータの受信

+     int return_code = -1;

+-    char pp_expected_response[] = { 0, -1 };

++    char pp_expected_response[] = { 0, (char)-1 };

+     vector<string> lines;

+     if (! response(return_code, "PP\n", pp_expected_response, &lines)) {

+       error_message_ = "PP fail.";

+@@ -356,7 +356,7 @@ struct ScipHandler::pImpl
+ 

+     if (on) {

+       int return_code = -1;

+-      char expected_response[] = { 0, -1 };

++      char expected_response[] = { 0, (char)-1 };

+       if (! response(return_code, "BM\n", expected_response)) {

+         error_message_ = "BM fail.";

+         return false;

+@@ -369,7 +369,7 @@ struct ScipHandler::pImpl
+       if (! mx_capturing_) {

+         // 消灯するための QT では、応答を待つべき

+         int return_code = -1;

+-        char qt_expected_response[] = { 0, -1 };

++        char qt_expected_response[] = { 0, (char)-1 };

+         if (! response(return_code, "QT\n", qt_expected_response)) {

+           return false;

+         }

+@@ -777,7 +777,7 @@ bool ScipHandler::loadParameter(RangeSen
+ bool ScipHandler::versionLines(vector<string>& lines)

+ {

+   int return_code = -1;

+-  char expected_response[] = { 0, -1 };

++  char expected_response[] = { 0, (char)-1 };

+   if (! pimpl->response(return_code, "VV\n", expected_response, &lines)) {

+     return false;

+   }

+@@ -792,7 +792,7 @@ bool ScipHandler::setRawTimestampMode(bo
+ 

+   // TM0 or TM2 の送信

+   int return_code = -1;

+-  char expected_response[] = { 0, -1 };

++  char expected_response[] = { 0, (char)-1 };

+   if (! pimpl->response(return_code, send_command, expected_response)) {

+     pimpl->error_message_ = (on) ? "TM0 fail." : "TM2 fail.";

+     return false;

+@@ -809,7 +809,7 @@ bool ScipHandler::rawTimestamp(int* time
+ {

+   // TM1 の値を返す

+   int return_code = -1;

+-  char expected_response[] = { 0, -1 };

++  char expected_response[] = { 0, (char)-1 };

+   vector<string> lines;

+   if (! pimpl->response(return_code, "TM1\n", expected_response, &lines)) {

+     pimpl->error_message_ = "TM1 fail.";