Jsoncpp ver1.9.1 fails to compile on ARM Compiler 5

[subithaparamasivan]

Please refer Issue id #1051 comments having more details regarding this issue.

we removed #include <type_traits> in include/json/config.h file and also removed from local dir(type_traits.h). In this case we are faced below compiler error in "allocator.h" file .

json/allocator.h(18,9) : error #738: a class-qualified name is required
json/allocator.h(18,20) : error #65: expected a ";"
json/allocator.h(19,9) : error #738: a class-qualified name is required
json/allocator.h(19,17) : error #65: expected a ";"
json/allocator.h(20,9) : error #738: a class-qualified name is required
json/allocator.h(20,23) : error #65: expected a ";"
json/allocator.h(21,9) : error #738: a class-qualified name is required
json/allocator.h(21,19) : error #65: expected a ";"
json/allocator.h(22,9) : error #738: a class-qualified name is required
json/allocator.h(22,25) : error #65: expected a ";"
json/allocator.h(23,9) : error #738: a class-qualified name is required
json/allocator.h(23,19) : error #65: expected a ";"
json/allocator.h(24,9) : error #738: a class-qualified name is required
json/allocator.h(24,25) : error #65: expected a ";"
json/allocator.h(29,3) : error #20: identifier "pointer" is undefined
json/allocator.h(29,20) : error #20: identifier "size_type" is undefined
json/allocator.h(41,28) : error #20: identifier "pointer" is undefined
json/allocator.h(41,39) : error #20: identifier "size_type" is undefined
json/allocator.h(50,21) : error #40: expected an identifier
json/allocator.h(50,46) : error #20: identifier "pointer" is undefined
json/allocator.h(50,57) : error #20: identifier "Args" is undefined
json/allocator.h(50,61) : error #18: expected a ")"
json/allocator.h(55,3) : error #20: identifier "size_type" is undefined
json/allocator.h(57,3) : error #20: identifier "pointer" is undefined
json/allocator.h(57,19) : error #20: identifier "reference" is undefined
json/allocator.h(59,3) : error #20: identifier "const_pointer" is undefined
json/allocator.h(59,25) : error #20: identifier "const_reference" is undefined
json/allocator.h(59,17) : error #403: invalid redeclaration of member function "Json::SecureAllocator::address() const" (declared at line 57)
json/allocator.h(64,16) : error #20: identifier "pointer" is undefined
json/allocator.h(72,47) : error #738: a class-qualified name is required

Could you please help on this.
Kindly do needful ASAP.

Thanks,

[dota17]

I can't test it in ARM compiler, but from your log, I can only guess that it's because the using syntax.

Can you try to change using to typedef in allocator.h?, like:

- using value_type = T; 
+ typedef T value_type;

[RambabuTirumalasetty]

Hi dota17 ,

• using value_type = T;

• typedef T value_type;

As per your suggestion we modified our code. From this we could able to resolve some of the errors. Still we need to change syntax some of the places.

Ex:

• using Allocator = typename std::conditional<JSONCPP_USING_SECURE_MEMORY, SecureAllocator, std::allocator>::type;

• typedef typename std::conditional<JSONCPP_USING_SECURE_MEMORY, SecureAllocator,
  std::allocator>::type Allocator;

Log information is:
json/allocator.h(57,21) : error  #40: expected an identifier
json/allocator.h(57,57) : error  #20: identifier "Args" is undefined
json/allocator.h(57,61) : error  #18: expected a ")"
json/config.h(162,1) : error  #935: "typedef" may not be specified here
json/config.h(162,27) : error  #135: namespace "std" has no member "conditional"
json/config.h(171,46) : warning  #12-D: parsing restarts here after previous syntax error
json/config.h(175,34) : error  #276: name followed by "::" must be a class or namespace name
json/config.h(175,54) : error  #276: name followed by "::" must be a class or namespace name
json/config.h(176,9) : error  #276: name followed by "::" must be a class or namespace name
json/config.h(185,15) : error  #135: namespace "Json" has no member "String"
json/config.h(187,15) : error  #135: namespace "Json" has no member "IStringStream"
jsoncpp/src/json_tool.h(39,15) : error  #20: identifier "String" is undefined
jsoncpp/src/json_tool.h(40,3) : error  #20: identifier "String" is undefined
json/json_features.h(44,22) : error  #65: expected a ";"
json/json_features.h(48,19) : error  #65: expected a ";"
json/json_features.h(51,37) : error  #65: expected a ";"
json/json_features.h(54,25) : error  #65: expected a ";"
json/value.h(24,17) : error  #5: cannot open source input file "array": No such file or directory

Kindly suggest a way to overcome this...

[dota17]

Go ahead if it works.

But on the other hand, the latest version of jsoncpp(or 1.y.z) is built with C++11. if your compiler can't support some C++11 features, you can turn to use 0.y.z version.

[baylesj]

Closing.

We require compilers to be C++11 compliant. Your compiler does not appear to be compliant, so you could try a legacy version of JsonCpp.