kipi-plugins build failure rawdecodingiface.cpp invalid conversion from 'char*'

Guys, This appears a TQString issue in rawdecodingiface.cpp. However, I'm a bit stumped with all the '::' operators in bool KIPIRawConverterPlugin::RawDecodingIface::loadedFromDcraw(const TQString&, TQString&, KIPIRawConverterPlugin::SaveSettingsWidget::OutputFormat, const TQByteArray&, int, int)'. Has this surfaced before? libtool: compile: g++ -DHAVE_CONFIG_H -I. -I../.. -I../../kipi-plugins/common/include -I/opt/trinity/include -I/opt/trinity/include -I/opt/trinity/include -I/opt/trinity/include -I/opt/tqt3/include -I. -include tqt.h -I/opt/trinity/include/tde -DQT_THREAD_SUPPORT -D_REENTRANT -Wno-long-long -Wundef -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -fno-builtin -g3 -fno-inline -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -Wformat-security -Wmissing-format-attribute -Wno-non-virtual-dtor -fno-exceptions -fno-check-new -fno-common -I/usr/include/tqt -DQT_CLEAN_NAMESPACE -DQT_NO_ASCII_CAST -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION -MT rawdecodingiface.lo -MD -MP -MF .deps/rawdecodingiface.Tpo -c rawdecodingiface.cpp -fPIC -DPIC -o .libs/rawdecodingiface.o rawdecodingiface.cpp: In member function 'bool KIPIRawConverterPlugin::RawDecodingIface::loadedFromDcraw(const TQString&, TQString&, KIPIRawConverterPlugin::SaveSettingsWidget::OutputFormat, const TQByteArray&, int, int)': rawdecodingiface.cpp:302:76: error: invalid conversion from 'char*' to 'png_const_bytep {aka const unsigned char*}' [-fpermissive] /usr/include/png.h:2274:1: error: initializing argument 5 of 'void png_set_iCCP(png_structp, png_infop, png_const_charp, int, png_const_bytep, png_uint_32)' [-fpermissive] rawdecodingiface.cpp:309:25: warning: deprecated conversion from string constant to 'png_charp {aka char*}' [-Wwrite-strings] rawdecodingiface.cpp:320:100: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings] rawdecodingiface.cpp:324:92: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings] rawdecodingiface.cpp: In member function 'long int KIPIRawConverterPlugin::RawDecodingIface::formatStringList(char*, size_t, const char*, __va_list_tag*)': rawdecodingiface.cpp:660:55: warning: function might be possible candidate for 'gnu_printf' format attribute [-Wmissing-format-attribute] rawdecodingiface.cpp: In member function 'bool KIPIRawConverterPlugin::RawDecodingIface::loadedFromDcraw(const TQString&, TQString&, KIPIRawConverterPlugin::SaveSettingsWidget::OutputFormat, const TQByteArray&, int, int)': rawdecodingiface.cpp:481:59: warning: ignoring return value of 'size_t fwrite(const void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] make[4]: *** [rawdecodingiface.lo] Error 1 make[4]: Leaving directory `/build/src/kipi-plugins/kipi-plugins/rawconverter' make[3]: *** [all-recursive] Error 1 make[3]: Leaving directory `/build/src/kipi-plugins/kipi-plugins/rawconverter' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/build/src/kipi-plugins/kipi-plugins' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/build/src/kipi-plugins' make: *** [all] Error 2 -- David C. Rankin, J.D.,P.E.