Please describe the problem:
make[3]: Entering directory `/mnt/r4/zzz/pan/pan/pan/usenet-utils'
g++ -DHAVE_CONFIG_H -I. -I../..  -I../.. -I/usr/local/include/gmime-2.0 -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include   -pthread -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include     -I/usr/X11/include -march=athlon-xp -O2 -pipe -ggdb  -fvisibility-inlines-hidden -MT utf8-utils.o -MD -MP -MF .deps/utf8-utils.Tpo -c -o utf8-utils.o utf8-utils.cc
utf8-utils.cc: In function ‘std::string pan::header_to_utf8(const pan::StringView&, const char*, const char*)’:
utf8-utils.cc:189: error: invalid conversion from ‘const guchar*’ to ‘const char*’
utf8-utils.cc:189: error:   initializing argument 1 of ‘char* g_mime_utils_8bit_header_decode(const char*)’
make[3]: *** [utf8-utils.o] Error 1
make[3]: Leaving directory `/mnt/r4/zzz/pan/pan/pan/usenet-utils'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/mnt/r4/zzz/pan/pan/pan'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/mnt/r4/zzz/pan/pan'
make: *** [all] Error 2


Steps to reproduce:
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Actual results:


Expected results:


Does this happen every time?


Other information: