G15 on Linux

hi,

when i try to build g15composer it fails.
this is the output:

<br />
make<br />
make  all-am<br />
make[1]: Map '/home/tomminator/svn/g15/g15composer-3.2' wordt binnengegaan<br />
gcc -DHAVE_CONFIG_H -I.     -g -O2 -MT g15composer.o -MD -MP -MF .deps/g15composer.Tpo -c -o g15composer.o g15composer.c<br />
g15composer.c: In function ‘threadEntry’:<br />
g15composer.c:136: warning: passing argument 1 of ‘fclose’ makes pointer from integer without a cast<br />
mv -f .deps/g15composer.Tpo .deps/g15composer.Po<br />
: -o g15composer.lex.c g15composer.l<br />
yacc -b g15composer -d g15composer.y<br />
gcc -DHAVE_CONFIG_H -I.     -g -O2 -MT g15composer.tab.o -MD -MP -MF .deps/g15composer.tab.Tpo -c -o g15composer.tab.o g15composer.tab.c<br />
mv -f .deps/g15composer.tab.Tpo .deps/g15composer.tab.Po<br />
gcc -DHAVE_CONFIG_H -I.     -g -O2 -MT g15composer.lex.o -MD -MP -MF .deps/g15composer.lex.Tpo -c -o g15composer.lex.o g15composer.lex.c<br />
gcc: g15composer.lex.c: Bestand of map bestaat niet<br />
gcc: no input files<br />
make[1]: *** [g15composer.lex.o] Fout 1<br />
make[1]: Map '/home/tomminator/svn/g15/g15composer-3.2' wordt verlaten<br />
make: *** [all] Fout 2<br />

It seems like g15composer.lex.o is missing

any suggestions?