...
sed 's/ /./g'`\"" -DXVENDORNAME='"The X.Org Foundation"' -DXVENDORNAMESHORT='"X.Org"'    -c -o lex.o lex.c
lex.l:71: warning: redundant redeclaration of `yylineno' in same scope
<stdout>:348: warning: previous declaration of `yylineno'
<stdout>:724: warning: redundant redeclaration of `yylex' in same scope
twm.h:412: warning: previous declaration of `yylex'
<stdout>: In function `yylex':
<stdout>:837: error: `yy_prev_more_offset' undeclared (first use in this function)
<stdout>:837: error: (Each undeclared identifier is reported only once
<stdout>:837: error: for each function it appears in.)
<stdout>:821: warning: label `find_rule' defined but not used
<stdout>: At top level:
<stdout>:1482: warning: redundant redeclaration of `isatty' in same scope
/usr/include/unistd.h:717: warning: previous declaration of `isatty'
<stdout>:1753: warning: no previous prototype for `yyget_lineno'
<stdout>:1762: warning: no previous prototype for `yyget_in'
<stdout>:1770: warning: no previous prototype for `yyget_out'
<stdout>:1778: warning: no previous prototype for `yyget_leng'
<stdout>:1787: warning: no previous prototype for `yyget_text'
<stdout>:1796: warning: no previous prototype for `yyset_lineno'
<stdout>:1808: warning: no previous prototype for `yyset_in'
<stdout>:1813: warning: no previous prototype for `yyset_out'
<stdout>:1818: warning: no previous prototype for `yyget_debug'
<stdout>:1823: warning: no previous prototype for `yyset_debug'
<stdout>:1829: warning: no previous prototype for `yylex_destroy'
<stdout>:1252: warning: `yyunput' defined but not used
<stdout>:1862: warning: `yy_flex_strlen' defined but not used
make[4]: *** [lex.o] Error 1
make[4]: Leaving directory `/usr/src/xc/programs/twm'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/usr/src/xc/programs'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/usr/src/xc'
make[1]: *** [World] Error 2
make[1]: Leaving directory `/usr/src/xc'
make: *** [World] Error 2
root@xandrames:/usr/src/xc#