SO      10   11   0x02 builddir/
FUN     20   21   0x12 not the SO with source file name we expected 
SO      30   31   0x22 
SO      40   41   0x32 builddir1/
SO      50   51   0x42 file1.c
LSYM    60   61   0x52 not the FUN we're looking for
FUN     70   71   0x62 fun1
BINCL   80   81   0x72 something to ignore in a FUN body
SLINE   90   91   0x82
SOL    100  101   0x92 header.h
SLINE  110  111  0x102
FUN    120  121  0x112 fun2:some stabs type info here, to trim from the name
SLINE  130  131  0x122
SOL    140  141  0x132 file1.c
SLINE  150  151  0x142
SO     160  161  0x152
LSYM   170  171  0x162
SO     180  181  0x182 file3.c
SO     190  191  0x192