Cannot compile on ubuntu 18.04

[Marco Merlin]

marco@Latitude-E6440:/media/marco/DATA/programming/wemosd1/ttymidi$ make
gcc src/ttymidi.c -o ttymidi -lasound
src/ttymidi.c:477:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
 main(int argc, char** argv)
 ^~~~
/usr/bin/ld: /tmp/ccvk3X75.o: undefined reference to symbol 'pthread_create@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
Makefile:2: recipe for target 'all' failed
make: *** [all] Error 1

[Dirk (dbringez)]

It shoult be:

gcc src/ttymidi.c -o ttymidi -lasound -pthreat

[David Santiago del Río Valencia (sdelrio)]

Is the same for me

santiago@santiago-Inspiron-N5050:~/Descargas/ttymidi$ make
gcc src/ttymidi.c -o ttymidi -lasound
src/ttymidi.c:477:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
 main(int argc, char** argv)
 ^~~~
/usr/bin/ld: /tmp/cc8dpDAQ.o: referencia sin definir al símbolo 'pthread_create@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
Makefile:2: recipe for target 'all' failed
make: *** [all] Error 1

[pwr (pwrbeats)]

yo I get this message in ubuntu when running "make" so I can't even get past the first step...