[CM] Problem building Grace on Catalina: fatal error: 'cstdlib' file not found

Neil Baylis neil.baylis at gmail.com
Mon Jan 4 09:51:56 PST 2021

I just downloaded the Grace sources and ran into a build failure very
quickly, see below. I guess this is because I don't have something
installed correctly. I do have xcode installed. My clang is at

I downloaded the source from this link. Is it correct?


Any ideas on what I'm missing?

==== Building juce (debug) ====
Creating lib
Creating obj/juce/Debug
clang: warning: include path for libstdc++ headers not found; pass
'-stdlib=libc++' on the command line to use the libc++ standard library
instead [-Wstdlibcxx-not-found]
In file included from juce/modules/juce_audio_basics/juce_audio_basics.mm:25
In file included from
In file included from juce/modules/juce_audio_basics/juce_audio_basics.h:28:
In file included from
fatal error: 'cstdlib' file not found
#include <cstdlib>
1 error generated.
make[1]: *** [obj/juce/Debug/juce_audio_basics.o] Error 1
make: *** [juce] Error 2
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