[QGIS-Developer] Understanding errors while building QGIS master
Hernán De Angelis
variablestarlight at gmail.com
Tue Apr 29 00:04:20 PDT 2025
Hi
I seek help in understanding errors (see excerpt below) I am currently
experiencing while building QGIS master in a fresh openSUSE Tumbleweed
install. These errors seem to originate in nlohmann json. I am used to
compile QGIS from source but never seen these errors before and have
trouble figuring out where they originate and what a possible solution
could be.
I am using Qt 6.9.0, and tried compiling using both GCC 14 and 15.
Passing the CXX flag "-std=c++17" does not seem to help. I tried using
NLOHMANN both internal and also using the latest version compiled
locally (3.12, as in error log below) but both fail in a similar way.
I compiled QGIS master as late as 6 april without problems in a previous
openSUSE install. There is a very real the possibility that recent
changes in GCC14 and 15 regarding required standards are playing a part
here, as well as packaging changes in openSUSE Tumbleweed. However, as I
am unsure what the cause may be I would like to ask the developers if
these errors look familiar to you and if they suggest something.
Thanks in advance
Hernán
[ 12%] Built target staged-plugins-on-build
In file included from
/usr/local/src/QGIS/external/nlohmann/detail/value_t.hpp:16,
from
/usr/local/src/QGIS/external/nlohmann/detail/exceptions.hpp:20,
from
/usr/local/src/QGIS/external/nlohmann/detail/conversions/from_json.hpp:23,
from
/usr/local/src/QGIS/external/nlohmann/adl_serializer.hpp:14,
from /usr/local/src/QGIS/external/nlohmann/json.hpp:34,
from /usr/local/src/QGIS/external/pdal_wrench/vpc.cpp:26:
/usr/local/src/QGIS/external/nlohmann/detail/macro_scope.hpp:257:63:
error: wrong number of template arguments (11, should be at least 0)
257 | AllocatorType, JSONSerializer, BinaryType, CustomBaseClass>
| ^
/usr/local/src/QGIS/external/nlohmann/detail/meta/type_traits.hpp:53:22:
note: in expansion of macro ‘NLOHMANN_BASIC_JSON_TPL’
53 | struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/local/include/pdal/PDALUtils.hpp:39,
from /usr/local/include/pdal/PointRef.hpp:37,
from /usr/local/include/pdal/Geometry.hpp:37,
from /usr/local/src/QGIS/external/pdal_wrench/vpc.hpp:18,
from /usr/local/src/QGIS/external/pdal_wrench/vpc.cpp:19:
/usr/local/include/pdal/JsonFwd.hpp:40:7: note: provided for
‘template<template<class U, class V, class ... Args> class ObjectType,
template<class U, class ... Args> class ArrayType, class StringType,
class BooleanType, class NumberIntegerType, class NumberUnsignedType,
class NumberFloatType, template<class U> class AllocatorType,
template<class T, class SFINAE> class JSONSerializer, class BinaryType>
class nlohmann::basic_json’
40 | class basic_json;
| ^~~~~~~~~~
In file included from
/usr/local/src/QGIS/external/nlohmann/detail/exceptions.hpp:25:
/usr/local/src/QGIS/external/nlohmann/detail/meta/type_traits.hpp:53:45:
error: template argument 1 is invalid
53 | struct is_basic_json<NLOHMANN_BASIC_JSON_TPL> : std::true_type {};
| ^
/usr/local/src/QGIS/external/nlohmann/detail/macro_scope.hpp:257:63:
error: wrong number of template arguments (11, should be at least 0)
257 | AllocatorType, JSONSerializer, BinaryType, CustomBaseClass>
| ^
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:51:28:
note: in expansion of macro ‘NLOHMANN_BASIC_JSON_TPL’
51 | struct string_t_helper<NLOHMANN_BASIC_JSON_TPL>
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:40:7: note: provided for
‘template<template<class U, class V, class ... Args> class ObjectType,
template<class U, class ... Args> class ArrayType, class StringType,
class BooleanType, class NumberIntegerType, class NumberUnsignedType,
class NumberFloatType, template<class U> class AllocatorType,
template<class T, class SFINAE> class JSONSerializer, class BinaryType>
class nlohmann::basic_json’
40 | class basic_json;
| ^~~~~~~~~~
In file included from /usr/local/src/QGIS/external/nlohmann/json.hpp:50:
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:51:51:
error: template argument 1 is invalid
51 | struct string_t_helper<NLOHMANN_BASIC_JSON_TPL>
| ^
/usr/local/src/QGIS/external/nlohmann/json.hpp:104:30: error: reference
to ‘json_pointer’ is ambiguous
104 | friend class ::nlohmann::json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:166:26: error: reference
to ‘json_pointer’ is ambiguous
166 | using json_pointer = ::nlohmann::json_pointer<StringType>;
| ^~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:2327:21: error: missing
template argument list after ‘nlohmann::json_abi_v3_11_3::json_pointer’;
template placeholder not permitted in parameter
2327 | ValueType value(const json_pointer& ptr, const ValueType&
default_value) const
| ^~~~~
| <>
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’ declared here
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:2352:22: error: missing
template argument list after ‘nlohmann::json_abi_v3_11_3::json_pointer’;
template placeholder not permitted in parameter
2352 | ReturnType value(const json_pointer& ptr, ValueType &&
default_value) const
| ^~~~~
| <>
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’ declared here
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:2376:27: error: reference
to ‘json_pointer’ is ambiguous
2376 | ValueType value(const
::nlohmann::json_pointer<BasicJsonType>& ptr, const ValueType&
default_value) const
| ^~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:2376:51: error: expected
‘,’ or ‘...’ before ‘<’ token
2376 | ValueType value(const
::nlohmann::json_pointer<BasicJsonType>& ptr, const ValueType&
default_value) const
| ^
/usr/local/src/QGIS/external/nlohmann/json.hpp:2387:28: error: reference
to ‘json_pointer’ is ambiguous
2387 | ReturnType value(const
::nlohmann::json_pointer<BasicJsonType>& ptr, ValueType &&
default_value) const
| ^~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:2387:52: error: expected
‘,’ or ‘...’ before ‘<’ token
2387 | ReturnType value(const
::nlohmann::json_pointer<BasicJsonType>& ptr, ValueType &&
default_value) const
| ^
/usr/local/src/QGIS/external/nlohmann/json.hpp:2745:19: error: missing
template argument list after ‘nlohmann::json_abi_v3_11_3::json_pointer’;
template placeholder not permitted in parameter
2745 | bool contains(const json_pointer& ptr) const
| ^~~~~
| <>
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’ declared here
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:2752:46: error: reference
to ‘json_pointer’ is ambiguous
2752 | bool contains(const typename
::nlohmann::json_pointer<BasicJsonType>& ptr) const
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:2752:58: error: expected
‘,’ or ‘...’ before ‘<’ token
2752 | bool contains(const typename
::nlohmann::json_pointer<BasicJsonType>& ptr) const
| ^
/usr/local/src/QGIS/external/nlohmann/json.hpp:4618:26: error: missing
template argument list after ‘nlohmann::json_abi_v3_11_3::json_pointer’;
template placeholder not permitted in parameter
4618 | reference operator[](const json_pointer& ptr)
| ^~~~~
| <>
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’ declared here
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4618:15: error:
‘nlohmann::json_abi_v3_11_3::basic_json<ObjectType, ArrayType,
StringType, BooleanType, NumberIntegerType, NumberUnsignedType,
NumberFloatType, AllocatorType, JSONSerializer, BinaryType,
CustomBaseClass>::value_type&
nlohmann::json_abi_v3_11_3::basic_json<ObjectType, ArrayType,
StringType, BooleanType, NumberIntegerType, NumberUnsignedType,
NumberFloatType, AllocatorType, JSONSerializer, BinaryType,
CustomBaseClass>::operator[](...)’ must not have variable number of
arguments
4618 | reference operator[](const json_pointer& ptr)
| ^~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4625:32: error: reference
to ‘json_pointer’ is ambiguous
4625 | reference operator[](const
::nlohmann::json_pointer<BasicJsonType>& ptr)
| ^~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4625:56: error: expected
‘,’ or ‘...’ before ‘<’ token
4625 | reference operator[](const
::nlohmann::json_pointer<BasicJsonType>& ptr)
| ^
/usr/local/src/QGIS/external/nlohmann/json.hpp:4632:32: error: missing
template argument list after ‘nlohmann::json_abi_v3_11_3::json_pointer’;
template placeholder not permitted in parameter
4632 | const_reference operator[](const json_pointer& ptr) const
| ^~~~~
| <>
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’ declared here
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4632:21: error: ‘const
nlohmann::json_abi_v3_11_3::basic_json<ObjectType, ArrayType,
StringType, BooleanType, NumberIntegerType, NumberUnsignedType,
NumberFloatType, AllocatorType, JSONSerializer, BinaryType,
CustomBaseClass>::value_type&
nlohmann::json_abi_v3_11_3::basic_json<ObjectType, ArrayType,
StringType, BooleanType, NumberIntegerType, NumberUnsignedType,
NumberFloatType, AllocatorType, JSONSerializer, BinaryType,
CustomBaseClass>::operator[](...) const’ must not have variable number
of arguments
4632 | const_reference operator[](const json_pointer& ptr) const
| ^~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4639:38: error: reference
to ‘json_pointer’ is ambiguous
4639 | const_reference operator[](const
::nlohmann::json_pointer<BasicJsonType>& ptr) const
| ^~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4639:62: error: expected
‘,’ or ‘...’ before ‘<’ token
4639 | const_reference operator[](const
::nlohmann::json_pointer<BasicJsonType>& ptr) const
| ^
/usr/local/src/QGIS/external/nlohmann/json.hpp:4646:18: error: missing
template argument list after ‘nlohmann::json_abi_v3_11_3::json_pointer’;
template placeholder not permitted in parameter
4646 | reference at(const json_pointer& ptr)
| ^~~~~
| <>
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’ declared here
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4653:24: error: reference
to ‘json_pointer’ is ambiguous
4653 | reference at(const ::nlohmann::json_pointer<BasicJsonType>&
ptr)
| ^~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4653:48: error: expected
‘,’ or ‘...’ before ‘<’ token
4653 | reference at(const ::nlohmann::json_pointer<BasicJsonType>&
ptr)
| ^
/usr/local/src/QGIS/external/nlohmann/json.hpp:4660:24: error: missing
template argument list after ‘nlohmann::json_abi_v3_11_3::json_pointer’;
template placeholder not permitted in parameter
4660 | const_reference at(const json_pointer& ptr) const
| ^~~~~
| <>
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’ declared here
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4667:30: error: reference
to ‘json_pointer’ is ambiguous
4667 | const_reference at(const
::nlohmann::json_pointer<BasicJsonType>& ptr) const
| ^~
/usr/local/src/QGIS/external/nlohmann/detail/json_pointer.hpp:35:7:
note: candidates are: ‘template<class RefStringType> class
nlohmann::json_abi_v3_11_3::json_pointer’
35 | class json_pointer
| ^~~~~~~~~~~~
/usr/local/include/pdal/JsonFwd.hpp:45:7: note: ‘template<class
BasicJsonType> class nlohmann::json_pointer’
45 | class json_pointer;
| ^~~~~~~~~~~~
/usr/local/src/QGIS/external/nlohmann/json.hpp:4667:54: error: expected
‘,’ or ‘...’ before ‘<’ token
4667 | const_reference at(const
::nlohmann::json_pointer<BasicJsonType>& ptr) const
| ^
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