Use tabs !!!
CC=cc
FL=-O0 -Wextra -pedantic -ansi -std=c11 -c
all: cut1
cut1: main.o read_ini.o
$(CC) main.o read_ini.o -L/usr/include/ -lm -o cut1.exe
main.o: main.c
$(CC) $(FL) main.c
read_ini.o: read_ini.c
$(CC) $(FL) read_ini.c
clean:
rm -rf *.o cut1.exe