Bug#916035: kraptor FTBFS with allegro4.4 2:4.4.2-13

[Adrian Bunk]

Source: kraptor
Version: 0.0.20040403+ds-1
Severity: serious
Tags: ftbfs

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/kraptor.html

...
src/explos.c: In function 'dibujar_explosion':
src/explos.c:129:20: warning: implicit declaration of function 'fmul'; did you mean 'fixmul'? [-Wimplicit-function-declaration]
       x2 -= fixtoi(fmul(itofix(tmp->spr->w), tmp->r))/2;
                    ^~~~
...
src/enemigo.c: In function 'agregar_disparo_ene':
src/enemigo.c:498:24: warning: implicit declaration of function 'fmul'; did you mean 'fixmul'? [-Wimplicit-function-declaration]
            nueva->dy = fmul(arma_ene[ene->arma_actual].vy, itofix(rand_ex(1, 3)) );
                        ^~~~
...
gcc obj/linux/azar.o obj/linux/bomba.o obj/linux/captura.o obj/linux/cinema.o obj/linux/clima.o obj/linux/combo.o obj/linux/config.o obj/linux/data.o obj/linux/datafind.o obj/linux/enemigo.o obj/linux/error.o obj/linux/explos.o obj/linux/filedata.o obj/linux/game.o obj/linux/global.o obj/linux/guiprocs.o obj/linux/guitrans.o obj/linux/humo.o obj/linux/ia.o obj/linux/joymnu.o obj/linux/jugador.o obj/linux/kfbuffer.o obj/linux/krstring.o obj/linux/main.o obj/linux/mapa.o obj/linux/menu.o obj/linux/partic.o obj/linux/pmask.o obj/linux/premio.o obj/linux/rvideo.o obj/linux/savedlg.o obj/linux/shopping.o obj/linux/sombras.o obj/linux/sonido.o obj/linux/wordwrap.o -o bin/kraptor_linux.bin -laldmb -ldumb `allegro-config --libs` `dpkg-buildflags --get LDFLAGS`
/usr/bin/ld: obj/linux/enemigo.o: undefined reference to symbol 'fmul@@GLIBC_2.28'
/usr/bin/ld: //lib/x86_64-linux-gnu/libm.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status