[OpenIndiana-discuss] compiling PODOFO

Fri Jan 5 19:37:42 UTC 2024

Hello,

I tried to compile PODOFO with gcc 13 and I get the following error:

[ 65%] Building CXX object test/unit/CMakeFiles/podofo-test.dir/ParserTest.cpp.o
[ 65%] Building CXX object test/unit/CMakeFiles/podofo-test.dir/TokenizerTest.cpp.o
[ 66%] Building CXX object test/unit/CMakeFiles/podofo-test.dir/StringTest.cpp.o
In file included from /usr/include/cppunit/TestAssert.h:8,
from /usr/include/cppunit/TestCase.h:6,
from /usr/include/cppunit/TestCaller.h:5,
from /usr/include/cppunit/extensions/HelperMacros.h:9,
from /container/source/var/podofo-0.9.7/test/unit/StringTest.h:24,
from /container/source/var/podofo-0.9.7/test/unit/StringTest.cpp:21:
/usr/include/cppunit/tools/StringHelper.h: In instantiation of 'typename std::enable_if<(! std::is_enum<_Tp>::value), std::__cxx11::basic_string >::type CppUnit::StringHelper::toString(const T&) [with T = PoDoFo::PdfString; typename std::enable_if<(! std::is_enum<_Tp>::value), std::__cxx11::basic_string >::type = std::__cxx11::basic_string]':
/usr/include/cppunit/TestAssert.h:74:50: required from 'static std::string CppUnit::assertion_traits::toString(const T&) [with T = PoDoFo::PdfString; std::string = std::__cxx11::basic_string]'
/usr/include/cppunit/TestAssert.h:168:58: required from 'void CppUnit::assertEquals(const T&, const T&, SourceLine, const std::string&) [with T = PoDoFo::PdfString; std::string = std::__cxx11::basic_string]'
/container/source/var/podofo-0.9.7/test/unit/StringTest.cpp:182:5: required from here
/usr/include/cppunit/tools/StringHelper.h:25:9: error: no match for 'operator<<' (operand types are 'CppUnit::OStringStream' {aka 'std::__cxx11::basic_ostringstream'} and 'const PoDoFo::PdfString')
25 | ost << x;
| ~~~~^~~~
In file included from /usr/gcc/13/include/c++/13.2.0/istream:41,
from /usr/gcc/13/include/c++/13.2.0/sstream:40,
from /usr/include/cppunit/portability/Stream.h:283,
from /usr/include/cppunit/TestAssert.h:7:
/usr/gcc/13/include/c++/13.2.0/ostream:110:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(__ostream_type& ()(__ostream_type&)) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
110 | operator<<(__ostream_type& (__pf)(__ostream_type&))
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:110:36: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'std::basic_ostream::__ostream_type& ()(std::basic_ostream::__ostream_type&)' {aka 'std::basic_ostream& ()(std::basic_ostream&)'}
110 | operator<<(__ostream_type& (__pf)(__ostream_type&))
| ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:119:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(__ios_type& ()(__ios_type&)) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream; __ios_type = std::basic_ios]'
119 | operator<<(__ios_type& (__pf)(__ios_type&))
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:119:32: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'std::basic_ostream::__ios_type& ()(std::basic_ostream::__ios_type&)' {aka 'std::basic_ios& ()(std::basic_ios&)'}
119 | operator<<(__ios_type& (__pf)(__ios_type&))
| ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:129:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::ios_base& ()(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
129 | operator<<(ios_base& (__pf) (ios_base&))
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:129:30: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'std::ios_base& ()(std::ios_base&)'
129 | operator<<(ios_base& (__pf) (ios_base&))
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:168:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long int) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
168 | operator<<(long __n)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:168:23: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'long int'
168 | operator<<(long __n)
| ~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:172:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long unsigned int) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
172 | operator<<(unsigned long __n)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:172:32: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'long unsigned int'
172 | operator<<(unsigned long __n)
| ~~~~~~~~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:176:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(bool) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
176 | operator<<(bool __n)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:176:23: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'bool'
176 | operator<<(bool __n)
| ~~~~~^~~
In file included from /usr/gcc/13/include/c++/13.2.0/ostream:880:
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:96:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short int) [with _CharT = char; _Traits = std::char_traits]'
96 | basic_ostream<_CharT, _Traits>::
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:97:22: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'short int'
97 | operator<<(short __n)
| ~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:183:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(short unsigned int) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
183 | operator<<(unsigned short __n)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:183:33: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'short unsigned int'
183 | operator<<(unsigned short __n)
| ~~~~~~~~~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:110:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(int) [with _CharT = char; _Traits = std::char_traits]'
110 | basic_ostream<_CharT, _Traits>::
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:111:20: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'int'
111 | operator<<(int __n)
| ~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:194:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(unsigned int) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
194 | operator<<(unsigned int __n)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:194:31: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'unsigned int'
194 | operator<<(unsigned int __n)
| ~~~~~~~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:203:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
203 | operator<<(long long __n)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:203:28: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'long long int'
203 | operator<<(long long __n)
| ~~~~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:207:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long unsigned int) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
207 | operator<<(unsigned long long __n)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:207:37: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'long long unsigned int'
207 | operator<<(unsigned long long __n)
| ~~~~~~~~~~~~~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:222:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(double) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
222 | operator<<(double __f)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:222:25: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'double'
222 | operator<<(double __f)
| ~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:226:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(float) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
226 | operator<<(float __f)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:226:24: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'float'
226 | operator<<(float __f)
| ~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:234:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long double) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
234 | operator<<(long double __f)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:234:30: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'long double'
234 | operator<<(long double __f)
| ~~~~~~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:292:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(const void*) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream]'
292 | operator<<(const void* __p)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:292:30: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'const void*'
292 | operator<<(const void* __p)
| ~~~~~~~~~~~~^~~
/usr/gcc/13/include/c++/13.2.0/ostream:297:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::nullptr_t) [with _CharT = char; _Traits = std::char_traits; __ostream_type = std::basic_ostream; std::nullptr_t = std::nullptr_t]'
297 | operator<<(nullptr_t)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:297:18: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'std::nullptr_t'
297 | operator<<(nullptr_t)
| ^~~~~~~~~
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:124:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(__streambuf_type*) [with _CharT = char; _Traits = std::char_traits; __streambuf_type = std::basic_streambuf]'
124 | basic_ostream<_CharT, _Traits>::
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:125:34: note: no known conversion for argument 1 from 'const PoDoFo::PdfString' to 'std::basic_ostream::__streambuf_type*' {aka 'std::basic_streambuf'}
125 | operator<<(__streambuf_type __sbin)
| ~~~~~~~~~~~~~~~~~~^~~~~~
In file included from /usr/gcc/13/include/c++/13.2.0/bits/memory_resource.h:38,
from /usr/gcc/13/include/c++/13.2.0/deque:76,
from /usr/include/cppunit/Message.h:11,
from /usr/include/cppunit/Exception.h:5,
from /usr/include/cppunit/TestCaller.h:4:
/usr/gcc/13/include/c++/13.2.0/cstddef:124:5: note: candidate: 'template constexpr std::__byte_op_t<_IntegerType> std::operator<<(byte, _IntegerType)'
124 | operator<<(byte __b, _IntegerType __shift) noexcept
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/cstddef:124:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:5: note: cannot convert 'ost' (type 'CppUnit::OStringStream' {aka 'std::__cxx11::basic_ostringstream'}) to type 'std::byte'
25 | ost << x;
| ^~~
In file included from /usr/gcc/13/include/c++/13.2.0/bits/basic_string.h:47,
from /usr/gcc/13/include/c++/13.2.0/string:54,
from /usr/include/cppunit/Message.h:12:
/usr/gcc/13/include/c++/13.2.0/string_view:760:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, basic_string_view<_CharT, _Traits>)'
760 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/string_view:760:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: 'PoDoFo::PdfString' is not derived from 'std::basic_string_view<_CharT, _Traits>'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/bits/basic_string.h:4020:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
4020 | operator<<(basic_ostream<_CharT, _Traits>& __os,
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/bits/basic_string.h:4020:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: 'const PoDoFo::PdfString' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
25 | ost << x;
| ~~~~^~~~
In file included from /usr/gcc/13/include/c++/13.2.0/bits/ios_base.h:46,
from /usr/gcc/13/include/c++/13.2.0/ios:44,
from /usr/gcc/13/include/c++/13.2.0/istream:40:
/usr/gcc/13/include/c++/13.2.0/system_error:339:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const error_code&)'
339 | operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/system_error:339:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'const std::error_code&'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:554:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _CharT)'
554 | operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:554:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: deduced conflicting types for parameter '_CharT' ('char' and 'PoDoFo::PdfString')
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:564:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, char)'
564 | operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:564:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'char'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:570:5: note: candidate: 'template std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, char)'
570 | operator<<(basic_ostream<char, _Traits>& __out, char __c)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:570:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'char'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:581:5: note: candidate: 'template std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, signed char)'
581 | operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:581:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'signed char'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:586:5: note: candidate: 'template std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, unsigned char)'
586 | operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:586:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'unsigned char'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:645:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const _CharT*)'
645 | operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:645:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: mismatched types 'const _CharT*' and 'PoDoFo::PdfString'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:307:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const char*)'
307 | operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/bits/ostream.tcc:307:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'const char*'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:662:5: note: candidate: 'template std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const char*)'
662 | operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:662:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'const char*'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:675:5: note: candidate: 'template std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const signed char*)'
675 | operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:675:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'const signed char*'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:680:5: note: candidate: 'template std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const unsigned char*)'
680 | operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:680:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: cannot convert 'x' (type 'const PoDoFo::PdfString') to type 'const unsigned char*'
25 | ost << x;
| ~~~~^~~~
/usr/gcc/13/include/c++/13.2.0/ostream:801:5: note: candidate: 'template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&)'
801 | operator<<(_Ostream&& __os, const _Tp& __x)
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/ostream:801:5: note: template argument deduction/substitution failed:
/usr/gcc/13/include/c++/13.2.0/ostream: In substitution of 'template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&) [with _Ostream = std::__cxx11::basic_ostringstream&; _Tp = PoDoFo::PdfString]':
/usr/include/cppunit/tools/StringHelper.h:25:9: required from 'typename std::enable_if<(! std::is_enum<_Tp>::value), std::__cxx11::basic_string >::type CppUnit::StringHelper::toString(const T&) [with T = PoDoFo::PdfString; typename std::enable_if<(! std::is_enum<_Tp>::value), std::__cxx11::basic_string >::type = std::__cxx11::basic_string]'
/usr/include/cppunit/TestAssert.h:74:50: required from 'static std::string CppUnit::assertion_traits::toString(const T&) [with T = PoDoFo::PdfString; std::string = std::__cxx11::basic_string]'
/usr/include/cppunit/TestAssert.h:168:58: required from 'void CppUnit::assertEquals(const T&, const T&, SourceLine, const std::string&) [with T = PoDoFo::PdfString; std::string = std::__cxx11::basic_string]'
/container/source/var/podofo-0.9.7/test/unit/StringTest.cpp:182:5: required from here
/usr/gcc/13/include/c++/13.2.0/ostream:801:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
In file included from /usr/gcc/13/include/c++/13.2.0/memory:80,
from /usr/include/cppunit/extensions/HelperMacros.h:16:
/usr/include/cppunit/tools/StringHelper.h: In instantiation of 'typename std::enable_if<(! std::is_enum<_Tp>::value), std::__cxx11::basic_string >::type CppUnit::StringHelper::toString(const T&) [with T = PoDoFo::PdfString; typename std::enable_if<(! std::is_enum<_Tp>::value), std::__cxx11::basic_string >::type = std::__cxx11::basic_string]':
/usr/include/cppunit/TestAssert.h:74:50: required from 'static std::string CppUnit::assertion_traits::toString(const T&) [with T = PoDoFo::PdfString; std::string = std::__cxx11::basic_string]'
/usr/include/cppunit/TestAssert.h:168:58: required from 'void CppUnit::assertEquals(const T&, const T&, SourceLine, const std::string&) [with T = PoDoFo::PdfString; std::string = std::__cxx11::basic_string]'
/container/source/var/podofo-0.9.7/test/unit/StringTest.cpp:182:5: required from here
/usr/gcc/13/include/c++/13.2.0/bits/shared_ptr.h:70:5: note: candidate: 'template<class _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const __shared_ptr<_Tp, _Lp>&)'
70 | operator<<(std::basic_ostream<_Ch, _Tr>& __os,
| ^~~~~~~~
/usr/gcc/13/include/c++/13.2.0/bits/shared_ptr.h:70:5: note: template argument deduction/substitution failed:
/usr/include/cppunit/tools/StringHelper.h:25:9: note: 'const PoDoFo::PdfString' is not derived from 'const std::__shared_ptr<_Tp, _Lp>'
25 | ost << x;
| ~~~~^~~~
make[2]: *** [test/unit/CMakeFiles/podofo-test.dir/build.make:272: test/unit/CMakeFiles/podofo-test.dir/StringTest.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:1094: test/unit/CMakeFiles/podofo-test.dir/all] Error 2
make: *** [Makefile:136: all] Error 2
This happens when I try to compile the github sources (https://github.com/podofo/) I have also tried to compilethe stable version but this fails with gcc-13. So I tried tocimpile with gcc-10 but this fails again because libcppunit.sois linked against
libstdc++.so.6 =>        /usr/gcc/13/lib/amd64/libstdc++.so.6
Does anybody have an idea how to compile PODOFO?
Kind regards,A.S.

----------------------Apostolos Syropoulos
Xanthi, Greece