qtbase fails to build using CMake due to posix_iconv issues

/home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp: In member function ‘virtual QString QIconvCodec::convertToUnicode(const char*, int, QTextCodec::ConverterState*) const’:
/home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp:206:39: error: invalid conversion from ‘const char**’ to ‘char**’ [-fpermissive]
  206 |         size_t ret = iconv(state->cd, &inBytes, &inBytesLeft, &outBytes, &outBytesLeft);
      |                                       ^~~~~~~~
      |                                       |
      |                                       const char**
In file included from /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec_p.h:59,
                 from /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp:42:
/usr/include/iconv.h:42:54: note:   initializing argument 2 of ‘size_t iconv(iconv_t, char**, size_t*, char**, size_t*)’
   42 | extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
      |                                    ~~~~~~~~~~~~~~~~~~^~~~~~~
/home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp: In function ‘bool setByteOrder(iconv_t)’:
/home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp:287:19: error: invalid conversion from ‘const char**’ to ‘char**’ [-fpermissive]
  287 |     if (iconv(cd, inBytesPtr, &inBytesLeft, &outBytes, &outBytesLeft) == (size_t) -1) {
      |                   ^~~~~~~~~~
      |                   |
      |                   const char**
In file included from /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec_p.h:59,
                 from /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp:42:
/usr/include/iconv.h:42:54: note:   initializing argument 2 of ‘size_t iconv(iconv_t, char**, size_t*, char**, size_t*)’
   42 | extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
      |                                    ~~~~~~~~~~~~~~~~~~^~~~~~~
/home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp: In member function ‘virtual QByteArray QIconvCodec::convertFromUnicode(const QChar*, int, QTextCodec::ConverterState*) const’:
/home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp:360:30: error: invalid conversion from ‘const char**’ to ‘char**’ [-fpermissive]
  360 |         if (iconv(state->cd, inBytesPtr, &inBytesLeft, &outBytes, &outBytesLeft) == (size_t) -1) {
      |                              ^~~~~~~~~~
      |                              |
      |                              const char**
In file included from /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec_p.h:59,
                 from /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp:42:
/usr/include/iconv.h:42:54: note:   initializing argument 2 of ‘size_t iconv(iconv_t, char**, size_t*, char**, size_t*)’
   42 | extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
      |                                    ~~~~~~~~~~~~~~~~~~^~~~~~~

[ 39%] Building CXX object src/corelib/CMakeFiles/Core.dir/codecs/qiconvcodec.cpp.o
cd /home/max/qt-dev/dev.cmake/qtbase.cmake/src/corelib && /usr/bin/c++  -DCore_EXPORTS -DELF_INTERPRETER=\"/lib64/ld-linux-x86-64.so.2\" -DPCRE2_CODE_UNIT_WIDTH=16 -DQT_ASCII_CAST_WARNINGS -DQT_BUILDING_QT -DQT_BUILD_CORE_LIB -DQT_CORE_LIB -DQT_CORE_QOBJECT_LIB -DQT_DEPRECATED_WARNINGS -DQT_MOC_COMPAT -DQT_NO_CAST_TO_ASCII -DQT_NO_FOREACH -DQT_NO_USING_NAMESPACE -DQT_USE_QSTRINGBUILDER -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -Ddeprecations -I/home/max/qt-dev/dev.cmake/qtbase.cmake/src/corelib/Core_autogen/include -I/home/max/qt-dev/dev.cmake/qtbase.cmake/include -I/home/max/qt-dev/dev.cmake/qtbase.cmake/include/QtCore -I/home/max/qt-dev/dev/qtbase/src/corelib -I/home/max/qt-dev/dev.cmake/qtbase.cmake/src/corelib -I/home/max/qt-dev/dev.cmake/qtbase.cmake/src/corelib/global -I/home/max/qt-dev/dev/qtbase/src/corelib/../3rdparty/tinycbor/src -I/home/max/qt-dev/dev.cmake/qtbase.cmake/include/QtCore/6.0.0 -I/home/max/qt-dev/dev.cmake/qtbase.cmake/include/QtCore/6.0.0/QtCore -I/home/max/qt-dev/dev/qtbase/src/corelib/../3rdparty/double-conversion/.. -I/home/max/qt-dev/dev/qtbase/src/corelib/../3rdparty/double-conversion/include -I/home/max/qt-dev/dev/qtbase/src/corelib/../3rdparty/forkfd -I/home/max/qt-dev/dev.cmake/qtbase.cmake/src/corelib/.rcc -I/home/max/qt-dev/dev/qtbase/mkspecs/linux-g++ -I/home/max/qt-dev/dev/qtbase/src/3rdparty/pcre2/src  -g -fPIC -fvisibility=hidden -fvisibility-inlines-hidden   -Wall -Wextra -fPIC -std=gnu++17 -Winvalid-pch -include /home/max/qt-dev/dev.cmake/qtbase.cmake/src/corelib/CMakeFiles/Core.dir/cmake_pch.hxx -o CMakeFiles/Core.dir/codecs/qiconvcodec.cpp.o -c /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp

g++ -c -include .pch/Qt6Core -pipe -O3 -std=c++1z -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -Wno-format-overflow -D_REENTRANT -fPIC -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_USING_NAMESPACE -DQT_NO_FOREACH -DQFLOAT16_INCLUDE_FAST -DELF_INTERPRETER=\"/lib64/ld-linux-x86-64.so.2\" -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_BUILD_CORE_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_DEPRECATED_WARNINGS_SINCE=0x060000 -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DPCRE2_CODE_UNIT_WIDTH=16 -I/home/max/qt-dev/dev/qtbase/src/corelib -I. -Iglobal -I/home/max/qt-dev/dev/qtbase/src/3rdparty/md5 -I/home/max/qt-dev/dev/qtbase/src/3rdparty/md4 -I/home/max/qt-dev/dev/qtbase/src/3rdparty/sha3 -I/home/max/qt-dev/dev/qtbase/src/3rdparty -I/home/max/qt-dev/dev/qtbase/src/3rdparty/double-conversion/include -I/home/max/qt-dev/dev/qtbase/src/3rdparty/forkfd -I/home/max/qt-dev/dev/qtbase/src/3rdparty/tinycbor/src -I.rcc -I../../include -I../../include/QtCore -I../../include/QtCore/6.0.0 -I../../include/QtCore/6.0.0/QtCore -I.moc -I.tracegen -I/home/max/qt-dev/dev/qtbase/src/3rdparty/pcre2/src -I/home/max/qt-dev/dev/qtbase/mkspecs/linux-g++ -o .obj/qiconvcodec.o /home/max/qt-dev/dev/qtbase/src/corelib/codecs/qiconvcodec.cpp