+--- ../cache/racket-6.12/src/racket/sconfig.h 2017-10-12 18:23:27.000000000 +0000
++++ ./src/racket/sconfig.h 2018-02-07 01:18:13.911569478 +0000
+@@ -124,10 +124,12 @@
+ # endif
+ # if defined(__x86_64__)
+ # define SCHEME_PLATFORM_LIBRARY_SUBPATH "x86_64-"SPLS_LINUX
+ # define REGISTER_POOR_MACHINE
+ # define ASM_DBLPREC_CONTROL_87
++#ifndef __ANDROID__
+ # define MZ_TRY_EXTFLONUMS
+ # endif
++# endif
+ # ifndef SCHEME_PLATFORM_LIBRARY_SUBPATH
+ # define SCHEME_PLATFORM_LIBRARY_SUBPATH "unknown-"SPLS_LINUX
+ # endif
+@@ -147,12 +149,16 @@
+ #if defined(__i386__)
+ # define MZ_USE_JIT_I386
+ # define MZ_JIT_USE_MPROTECT
++#ifndef __ANDROID__
+ # define MZ_USE_DWARF_LIBUNWIND
+ #endif
++#endif
+ #if defined(__x86_64__)
+ # define MZ_USE_JIT_X86_64
+ # define MZ_JIT_USE_MPROTECT
++#ifndef __ANDROID__
+ # define MZ_USE_DWARF_LIBUNWIND
++#endif
+ #endif
+ #if defined(__powerpc__) && !defined(__powerpc64__)
+ # define MZ_USE_JIT_PPC