Openalpr: can not run the make command in max os

[guyingqiong]

did i miss anything ?

make
[ 24%] Built target support
[ 24%] Built target video
[ 24%] Building CXX object openalpr/CMakeFiles/openalpr.dir/ocr/tesseract_ocr.cpp.o
In file included from /Users/yingqgu/openalpr/src/openalpr/ocr/tesseract_ocr.cpp:20:
In file included from /Users/yingqgu/openalpr/src/openalpr/ocr/tesseract_ocr.h:35:
In file included from /usr/local/include/tesseract/baseapi.h:27:
In file included from /usr/local/include/tesseract/apitypes.h:23:
/usr/local/include/tesseract/publictypes.h:33:1: error: unknown type name 'constexpr'
constexpr int kPointsPerInch = 72;
^
/usr/local/include/tesseract/publictypes.h:33:11: error: expected unqualified-id
constexpr int kPointsPerInch = 72;
^
/usr/local/include/tesseract/publictypes.h:38:1: error: unknown type name 'constexpr'
constexpr int kMinCredibleResolution = 70;
^
/usr/local/include/tesseract/publictypes.h:38:11: error: expected unqualified-id
constexpr int kMinCredibleResolution = 70;
^
/usr/local/include/tesseract/publictypes.h:40:1: error: unknown type name 'constexpr'
constexpr int kMaxCredibleResolution = 2400;
^
/usr/local/include/tesseract/publictypes.h:40:11: error: expected unqualified-id
constexpr int kMaxCredibleResolution = 2400;
^
/usr/local/include/tesseract/publictypes.h:45:1: error: unknown type name 'constexpr'
constexpr int kResolutionEstimationFactor = 10;
^
/usr/local/include/tesseract/publictypes.h:45:11: error: expected unqualified-id
constexpr int kResolutionEstimationFactor = 10;
^
In file included from /Users/yingqgu/openalpr/src/openalpr/ocr/tesseract_ocr.cpp:20:
In file included from /Users/yingqgu/openalpr/src/openalpr/ocr/tesseract_ocr.h:35:
In file included from /usr/local/include/tesseract/baseapi.h:31:
/usr/local/include/tesseract/resultiterator.h:103:63: error: a space is required between consecutive right angle brackets (use '> >')
virtual std::vector>>* GetBestLSTMSymbolChoices() const;
^
In file included from /Users/yingqgu/openalpr/src/openalpr/ocr/tesseract_ocr.cpp:20:
In file included from /Users/yingqgu/openalpr/src/openalpr/ocr/tesseract_ocr.h:35:
In file included from /usr/local/include/tesseract/baseapi.h:32:
/usr/local/include/tesseract/serialis.h:43:1: error: unknown type name 'constexpr'
constexpr size_t countof(T const (&)[N]) noexcept {
^
/usr/local/include/tesseract/serialis.h:43:17: error: expected ';' at end of declaration
constexpr size_t countof(T const (&)[N]) noexcept {
^
/usr/local/include/tesseract/serialis.h:43:18: error: C++ requires a type specifier for all declarations
constexpr size_t countof(T const (&)[N]) noexcept {
^
/usr/local/include/tesseract/serialis.h:43:26: error: use of undeclared identifier 'T'
constexpr size_t countof(T const (&)[N]) noexcept {
^
/usr/local/include/tesseract/serialis.h:43:41: error: expected ';' after top level declarator
constexpr size_t countof(T const (&)[N]) noexcept {
^
/usr/local/include/tesseract/serialis.h:56:40: error: unknown type name 'size_t'
bool DeSerialize(FILE* fp, char* data, size_t n = 1);
^
/usr/local/include/tesseract/serialis.h:57:41: error: unknown type name 'size_t'
bool DeSerialize(FILE* fp, float* data, size_t n = 1);
^
/usr/local/include/tesseract/serialis.h:58:42: error: unknown type name 'size_t'
bool DeSerialize(FILE* fp, int8_t* data, size_t n = 1);
^
/usr/local/include/tesseract/serialis.h:59:43: error: unknown type name 'size_t'
bool DeSerialize(FILE* fp, int16_t* data, size_t n = 1);
^
/usr/local/include/tesseract/serialis.h:60:43: error: unknown type name 'size_t'
bool DeSerialize(FILE* fp, int32_t* data, size_t n = 1);
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make[2]: * [openalpr/CMakeFiles/openalpr.dir/ocr/tesseract_ocr.cpp.o] Error 1
make[1]: [openalpr/CMakeFiles/openalpr.dir/all] Error 2
make: ** [all] Error 2

[Scott-Larsen]

I've got the same thing going on. Hopefully someone who understands this stuff will chime in.

[IvanLjubicic]

Hi guys.
I have the same problem. Any news regarding this one?
I'm running on 10.14.2 Mojave.

[naisergic]

+1
running High Sierra 10.13.6

[smallworld-network-wupeng]

10.14.3

[Hildebrand]

Yes, I've got the same issue while following the brew installation instructions, so while running the brew install openalpr command.

[Hildebrand]

ok, I've succeeded in compiling openalpr myself instead. On the mac the instructions nowadays need slight tweaking as follows:

brew install tesseract opencv@3 log4cplus
git clone https://github.com/openalpr/openalpr.git
cd openalpr/src
mkdir build
cd build
export OpenCV_DIR="/usr/local/opt/opencv@3/"
cmake .. -DCMAKE_INSTALL_PREFIX:PATH=/usr/local -DCMAKE_INSTALL_SYSCONFDIR:PATH=/etc -DCMAKE_MACOSX_RPATH=true -DCMAKE_CXX_FLAGS="-std=c++11"
make
sudo make install

done!

[Burand05]

Wow, that worked for me. Thanks so much @Hildebrand!

[cpknight]

@Hildebrand's solution worked for me as well.

[dabossxinxin]

+1
when i set CMAKE_CXX_FLAGS="-std=c++11"
I got the result

[Shubammanhas]

export OpenCV_DIR="/usr/local/opt/opencv@3/"

Is this the path where your openalpr resides?