racon: Missing headers during build?

On trying to build the current version on Max OSX 10.12.6 with Clang (Apple LLVM version 8.1.0 (clang-802.0.42)) and cmake 3.10.2, I got the following error:

Scanning dependencies of target edlib_static
[  6%] Building CXX object vendor/edlib/CMakeFiles/edlib_static.dir/edlib/src/edlib.cpp.o
[ 13%] Linking CXX static library ../../lib/libedlib_static.a
[ 13%] Built target edlib_static
Scanning dependencies of target spoa
[ 20%] Building CXX object vendor/spoa/CMakeFiles/spoa.dir/src/alignment_engine.cpp.o
/Users/DanWork/Desktop/Software/racon/vendor/spoa/src/alignment_engine.cpp:26:9: error: use of undeclared identifier 'exit'
        exit(1);
        ^
/Users/DanWork/Desktop/Software/racon/vendor/spoa/src/alignment_engine.cpp:32:9: error: use of undeclared identifier 'exit'
        exit(1);
        ^
2 errors generated.
make[2]: *** [vendor/spoa/CMakeFiles/spoa.dir/src/alignment_engine.cpp.o] Error 1
make[1]: *** [vendor/spoa/CMakeFiles/spoa.dir/all] Error 2
make: *** [all] Error 2

After some Googling, I added #include <stdlib.h> to racon/vendor/spoa/include/spoa/alignment_engine.hpp. The next attempt went a bit further:

Scanning dependencies of target edlib_static
[  6%] Building CXX object vendor/edlib/CMakeFiles/edlib_static.dir/edlib/src/edlib.cpp.o
[ 13%] Linking CXX static library ../../lib/libedlib_static.a
[ 13%] Built target edlib_static
Scanning dependencies of target spoa
[ 20%] Building CXX object vendor/spoa/CMakeFiles/spoa.dir/src/alignment_engine.cpp.o
[ 26%] Building CXX object vendor/spoa/CMakeFiles/spoa.dir/src/graph.cpp.o
[ 33%] Building CXX object vendor/spoa/CMakeFiles/spoa.dir/src/simd_alignment_engine.cpp.o
[ 40%] Building CXX object vendor/spoa/CMakeFiles/spoa.dir/src/sisd_alignment_engine.cpp.o
[ 46%] Linking CXX static library lib/libspoa.a
[ 46%] Built target spoa
Scanning dependencies of target thread_pool
[ 53%] Building CXX object vendor/thread_pool/CMakeFiles/thread_pool.dir/src/thread_pool.cpp.o
[ 60%] Linking CXX static library lib/libthread_pool.a
[ 60%] Built target thread_pool
Scanning dependencies of target racon
[ 66%] Building CXX object CMakeFiles/racon.dir/src/main.cpp.o
[ 73%] Building CXX object CMakeFiles/racon.dir/src/polisher.cpp.o
/Users/DanWork/Desktop/Software/racon/src/polisher.cpp:357:13: warning: format specifies type 'unsigned long' but the argument has type
      'unsigned long long' [-Wformat]
            i + 1, overlaps.size());
            ^~~~~
/Users/DanWork/Desktop/Software/racon/src/polisher.cpp:494:13: warning: format specifies type 'unsigned long' but the argument has type
      'unsigned long long' [-Wformat]
            i + 1, thread_futures.size());
            ^~~~~
2 warnings generated.
[ 80%] Building CXX object CMakeFiles/racon.dir/src/overlap.cpp.o
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:59:9: error: use of undeclared identifier 'exit'
        exit(1);
        ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:63:28: error: use of undeclared identifier 'atoi'
                q_begin_ = atoi(&cigar_[0]);
                           ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:75:34: error: use of undeclared identifier 'atoi'
                auto num_bases = atoi(&cigar_[j]);
                                 ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:80:34: error: use of undeclared identifier 'atoi'
                auto num_bases = atoi(&cigar_[j]);
                                 ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:84:34: error: use of undeclared identifier 'atoi'
                auto num_bases = atoi(&cigar_[j]);
                                 ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:88:34: error: use of undeclared identifier 'atoi'
                q_clip_length += atoi(&cigar_[j]);
                                 ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:136:9: error: use of undeclared identifier 'exit'
        exit(1);
        ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:147:13: error: use of undeclared identifier 'exit'
            exit(1);
            ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:152:52: warning: format specifies type 'unsigned long' but the argument has type 'uint64_t'
      (aka 'unsigned long long') [-Wformat]
                "missing sequence with id %lu!\n", q_id_);
                                          ~~~      ^~~~~
                                          %llu
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:153:13: error: use of undeclared identifier 'exit'
            exit(1);
            ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:160:13: error: use of undeclared identifier 'exit'
            exit(1);
            ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:165:52: warning: format specifies type 'unsigned long' but the argument has type 'uint64_t'
      (aka 'unsigned long long') [-Wformat]
                "missing sequence with id %lu!\n", t_id_);
                                          ~~~      ^~~~~
                                          %llu
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:166:13: error: use of undeclared identifier 'exit'
            exit(1);
            ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:179:9: error: use of undeclared identifier 'exit'
        exit(1);
        ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:191:9: error: use of undeclared identifier 'exit'
        exit(1);
        ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:210:13: error: use of undeclared identifier 'free'
            free(cigar);
            ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:213:62: warning: format specifies type 'unsigned long' but the argument has type 'uint64_t'
      (aka 'unsigned long long') [-Wformat]
                "edlib unable to align pair (%lu x %lu)!\n", q_id_, t_id_);
                                             ~~~             ^~~~~
                                             %llu
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:213:69: warning: format specifies type 'unsigned long' but the argument has type 'uint64_t'
      (aka 'unsigned long long') [-Wformat]
                "edlib unable to align pair (%lu x %lu)!\n", q_id_, t_id_);
                                                   ~~~              ^~~~~
                                                   %llu
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:214:13: error: use of undeclared identifier 'exit'
            exit(1);
            ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:253:41: error: use of undeclared identifier 'atoi'
            uint32_t k = 0, num_bases = atoi(&cigar_[j]);
                                        ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:293:41: error: use of undeclared identifier 'atoi'
            uint32_t k = 0, num_bases = atoi(&cigar_[j]);
                                        ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:308:41: error: use of undeclared identifier 'atoi'
            uint32_t k = 0, num_bases = atoi(&cigar_[j]);
                                        ^
/Users/DanWork/Desktop/Software/racon/src/overlap.cpp:338:9: error: use of undeclared identifier 'exit'
        exit(1);
        ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
4 warnings and 20 errors generated.
make[2]: *** [CMakeFiles/racon.dir/src/overlap.cpp.o] Error 1
make[1]: *** [CMakeFiles/racon.dir/all] Error 2
make: *** [all] Error 2

I then added the same #include <stdlib.h> to racon/src/overlap.hpp and made it to the end with warnings, but no further errors.

I can now run ./racon --help from the bin, so it seems like it might be successfully installed, but wanted to post this for others.