I did an 'emerge alsamixergui', and it depends on 'fltk'. alsamixergui failed its configure step on "checking for fl_numericsort in -lfltk", so I looked at the config.log and found this: configure:1474: checking for fl_numericsort in -lfltk configure:1493: gcc -o conftest -march=pentium3 -O3 -pipe -fomit-frame-pointer -I/usr/include/fltk-1.1 -L/usr/lib/fltk-1.1 conftest.c -lfltk 1>&5 /usr/lib/fltk-1.1/libfltk.so: undefined reference to `operator new[](unsigned)' /usr/lib/fltk-1.1/libfltk.so: undefined reference to `vtable for __cxxabiv1::__si_class_type_info' /usr/lib/fltk-1.1/libfltk.so: undefined reference to `operator delete(void*)' /usr/lib/fltk-1.1/libfltk.so: undefined reference to `__cxa_pure_virtual' /usr/lib/fltk-1.1/libfltk.so: undefined reference to `vtable for __cxxabiv1::__class_type_info' /usr/lib/fltk-1.1/libfltk.so: undefined reference to `operator delete[](void*)' /usr/lib/fltk-1.1/libfltk.so: undefined reference to `operator new(unsigned)' collect2: ld returned 1 exit status configure: failed program was: #line 1482 "configure" #include "confdefs.h" /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char fl_numericsort(); int main() { fl_numericsort() ; return 0; } It appears as if libfltk.so isn't linking against libstdc++ (and a quick ldd verifies this) I 'emerge sync'd about 2 hours ago. Reproducible: Always Steps to Reproduce: 1. emerge fltk 2. ldd /usr/lib/fltk-1.1/libfltk.so 3. readelf -s /usr/lib/fltk-1.1/libfltk.so | grep 'operator delete' Actual Results: We see that fltk isn't linking against a required library. My guess is that it is doing a 'gcc -shared ...' rather than 'g++ -shared ...' Expected Results: In the mean time, software that requires it can be linked using g++ or ld -lstdc++ as a work around, but this dependency should appear in libfltk.so
thanks for the detailed analysis. i think you were spot on about that. i've put in a workaround for this in fltk-1.1.2-r1 *** This bug has been marked as a duplicate of 15572 ***
