js185 says The cacheFlush support is missing on this platform.

[fede2cr]

c++ -o ExecutableAllocatorPosix.o -c -fvisibility=hidden -DOSTYPE="Linux4.16" -DOSARCH=Linux -DEXPORT_JS_API -D__STDC_LIMIT_MACROS -I. -I. -I./dist/include -I./dist/include/nsprpub -I/usr/include/nspr4 -I. -I./assembler -I./yarr -fPIC -fno-rtti -fno-exceptions -Wall -Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof -Wno-variadic-macros -Werror=return-type -pedantic -Wno-long-long -O2 -fPIC -std=gnu++98 -fpermissive -fno-delete-null-pointer-checks -fno-strict-aliasing -pthread -pipe -DNDEBUG -DTRIMMED -O2 -DUSE_SYSTEM_MALLOC=1 -DENABLE_ASSEMBLER=1 -DENABLE_JIT=1 -DMOZILLA_CLIENT -include ./js-confdefs.h -MD -MF .deps/ExecutableAllocatorPosix.pp ./assembler/jit/ExecutableAllocatorPosix.cpp
In file included from ./assembler/jit/ExecutableAllocatorPosix.cpp:26:0:
./assembler/jit/ExecutableAllocator.h:395:6: error: #error "The cacheFlush support is missing on this platform."
#error "The cacheFlush support is missing on this platform."
^~~~~
In file included from ./jsval.h:48:0,
from ./jspubtd.h:47,
from ./jsapi.h:49,
from ./assembler/jit/ExecutableAllocator.h:33,
from ./assembler/jit/ExecutableAllocatorPosix.cpp:26:
./jsutil.h: In function 'T* js_array_new(size_t)':
./jsutil.h:302:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
if (!memory)
^~
./jsutil.h:304:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
*(size_t *)memory = n;
^
In file included from ./assembler/jit/ExecutableAllocator.h:33:0,
from ./assembler/jit/ExecutableAllocatorPosix.cpp:26:
./jsapi.h: At global scope:
./jsapi.h:1381:39: warning: ignoring attributes on template argument 'jsval {aka long unsigned int}' [-Wignored-attributes]
template<> class AnchorPermitted { };
^
make[1]: *** [config/rules.mk:1477: ExecutableAllocatorPosix.o] Error 1