After running 'make linux-alsa' things run smoothly until: g++ -I. -Ilo -O3 -D__LINUX_ALSA__ -D__PLATFORM_LINUX__ -O3 -fno-strict-aliasing -D__CK_SNDFILE_NATIVE__ -c ulib_regex.cpp -o ulib_regex.o ulib_regex.cpp: In function ‘void regex_replace(void*, Chuck_DL_Return*, Chuck_VM_Shred*, CK_DL_API)’: ulib_regex.cpp:308:19: warning: converting to non-pointer type ‘long int’ from NULL [-Wconversion-null] RETURN->v_int = NULL; ^ ulib_regex.cpp: In function ‘void regex_replaceAll(void*, Chuck_DL_Return*, Chuck_VM_Shred*, CK_DL_API)’: ulib_regex.cpp:397:19: warning: converting to non-pointer type ‘long int’ from NULL [-Wconversion-null] RETURN->v_int = NULL; ^ g++ -I. -Ilo -O3 -D__LINUX_ALSA__ -D__PLATFORM_LINUX__ -O3 -fno-strict-aliasing -D__CK_SNDFILE_NATIVE__ -c util_buffers.cpp -o util_buffers.o g++ -I. -Ilo -O3 -D__LINUX_ALSA__ -D__PLATFORM_LINUX__ -O3 -fno-strict-aliasing -D__CK_SNDFILE_NATIVE__ -c util_console.cpp -o util_console.o g++ -I. -Ilo -O3 -D__LINUX_ALSA__ -D__PLATFORM_LINUX__ -O3 -fno-strict-aliasing -D__CK_SNDFILE_NATIVE__ -c util_string.cpp -o util_string.o util_string.cpp: In function ‘std::string get_full_path(const string&)’: util_string.cpp:393:14: error: ‘PATH_MAX’ was not declared in this scope char buf[PATH_MAX]; ^ util_string.cpp:395:42: error: ‘buf’ was not declared in this scope char * result = realpath(fp.c_str(), buf); ^ makefile:144: recipe for target 'util_string.o' failed make: *** [util_string.o] Error 1 My googling found no similar errors. Versions of dependencies are as follows: alsa-lib 1.0.27.2-1 alsa-utils 1.0.27.2-1 libsndfile 1.0.25-3 gcc 4.8.2-5 flex 2.5.37-1 bison 3.0.1-1 make 4.0-1 I'm new to building software from source so I apologize if this is a beginner's misunderstanding. Thanks for any help you can give me; I'm looking forward to trying ChucK.