Audiolab compile fails in OSX + workaround

[dchapiro]

1. FAILS COMPILE & WORKAROUND (OSX 10.13.2 / Python 3.6.4):

pip install scikits.audiolab
. . .
downloads and compiles some things successfully, but chokes with
/Developer/SDKs/MacOSX10.6.sdk/usr/include/float.h
which has
#if defined(GNUC)
#include_next <float.h>
as clang fails to find the latter float.h

Hence, added in ~/.profile:
C_INCLUDE_PATH="./:/usr/include/:${C_INCLUDE_PATH}”
export C_INCLUDE_PATH

However, clang still did not see /usr/include/float.h, so then
modified
/Developer/SDKs/MacOSX10.6.sdk/usr/include/float.h
replacing
#include_next <float.h>
with
#include <float.h>
and compile worked. The install apparently completed ok.