Following the readme instructions I moved the zexy directory in the extra directory of Pd, which is in my home directory (so far so good?), then changed to directory src/ and typed "autoconf", fine, then typed "./configure" and at the end of it I got this:
config.status: creating Makefile
./makesource.sh: 15: ./makesource.sh: Syntax error: "(" unexpected

And when I typed "make" I got:
make: *** No rule to make target `Make.source'.  Stop.

This is the whole ./configure log:
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for main in -lc... yes
checking for fclose in -lcrtdll... no
checking for lseek in -lcoldname... no
checking for main in -lkernel32... no
checking for main in -lm... yes
checking for nullfn in -lpd... no
checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for stdlib.h... (cached) yes
checking stdio.h usability... yes
checking stdio.h presence... yes
checking for stdio.h... yes
checking for string.h... (cached) yes
checking math.h usability... yes
checking math.h presence... yes
checking for math.h... yes
checking time.h usability... yes
checking time.h presence... yes
checking for time.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking whether time.h and sys/time.h may both be included... yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for sys/param.h... yes
checking for getpagesize... yes
checking for working mmap... yes
checking for select... yes
checking for socket... yes
checking for strerror... yes
checking "ms-bitfields"... no
checking "pd\>=0.37"... yes
checking "zexy-version"... 2.1
checking "parallel-port"... yes
configure: creating ./config.status
config.status: creating Makefile
./makesource.sh: 15: ./makesource.sh: Syntax error: "(" unexpected

What am I missing here?