./emconfigure ./configure fails, GCC version too old?

[Jack Woolford]

Hello,

So I've encountered a fair few problems trying to setup emscripten but managed to work them out so far. This time I'm stumped, not really surprising as I'm a Linux newbie anyway. So here is what is happening I'm trying to ./emconfigure ./configure Cling everything starts running and I encounter an error I can't seem to work out how to fix. This is the output:

/home/jack/Desktop/Programming/emscripten/emconfigure ./configure

checking for C compiler default output file name... a.out

checking whether the C compiler works... yes

checking whether we are cross compiling... no

checking for suffix of executables... 

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether /home/jack/Desktop/Programming/emscripten/emcc accepts -g... yes

checking for /home/jack/Desktop/Programming/emscripten/emcc option to accept ISO C89... none needed

checking whether we are using the GNU C++ compiler... yes

checking whether /home/jack/Desktop/Programming/emscripten/em++ accepts -g... yes

checking how to run the C preprocessor... /home/jack/Desktop/Programming/emscripten/emcc -E

checking whether GCC or Clang is our host compiler... clang

checking build system type... x86_64-unknown-linux-gnu

checking host system type... x86_64-unknown-linux-gnu

checking target system type... x86_64-unknown-linux-gnu

checking type of operating system we're going to host on... Linux

checking type of operating system we're going to target... Linux

checking target architecture... x86_64

checking whether Clang is new enough... yes

checking whether Clang will select a modern C++ standard library... no

configure: error:

We detected a missing feature in the standard C++ library that was known to be

missing in libstdc++4.6 and implemented in libstdc++4.7. There are numerous

C++11 problems with 4.6's library, and we don't support GCCs or libstdc++ older

than 4.7. You will need to update your system and ensure Clang uses the newer

standard library.

If this error is incorrect or you need to force things to work, you may pass

'--disable-compiler-version-checks' to configure to bypass this test.

ERROR    root: Configure step failed with non-zero return code 1! Command line: ['./configure']

Now I would force it, but thought better of it rather it just work smoothly and not produce other issues in the future I have to go back and fix. Anyway I u[dated GCC on my system to 4.7 and nothing has changed same error. So not really sure what is going on.

Anyway any help is appreciated,

Thanks.

[Jack Woolford]

Okay so now my system has updated to GCC 4.9.1 and still no change. Now I'm thinking I missed a bunch of steps somewhere maybe with Cling itself. 

I was following this: http://root.cern.ch/drupal/content/cling-build-instructions but it says to just follow on with this: http://clang.llvm.org/get_started.html which doesn't exactly interpret straight across to me entirely when it comes to the steps for Cling. As well as the fact I don't think it interprets across to Emscripten well either...

I know LLVM and Clang can be built with Emscripten as I believe the main developer Alon Zakai has done so (although that might be a sign this is over my head)... I'm also pretty sure it is to do with these particular lines: 

checking whether Clang is new enough... yes

checking whether Clang will select a modern C++ standard library... no

So I assume it is using the Clang I compile from source from the Emscripten repository, which brings me to a question, how do I update the Clang in the source build of Emscripten?

Anyway sorry if this is a pain I just thought it might be exactly what I'm looking for a way to setup Cling and compile it as JavaScript to allow me to hook it into Google Blockly. Although turns out nothing is as simple as first thought haha.

[Jack Woolford]

So I decided to try the emsdk instead (for some reason I didn't use it the first time) and that doesn't want to work either. This is the current outpu of ./emcc -v: 

jack@jack-Inspiron-3537 ~/Desktop/Programming/emsdk_portable/emscripten/master $ ./emcc -v

WARNING  root: cannot check node version: [Errno 2] No such file or directory

WARNING  root: did not see a source tree above the LLVM root directory (guessing based on directory of /home/jack/Desktop/Programming/emsdk_portable/clang/fastcomp/build_master_64/bin/llc), could not verify version numbers match

INFO     root: (Emscripten: Running sanity checks)

Checking JS engine node failed. Check ~/.emscripten. Details: [Errno 2] No such file or directory

CRITICAL root: The JavaScript shell used for compiling (node) does not seem to work, check the paths in ~/.emscripten

Which is unusual as it is reporting node is missing as I installed Nodejs as indicated by these instructions: http://kripken.github.io/emscripten-site/docs/getting_started/downloads.html#platform-notes-installation-instructions-portable-sdk where it mentions: Linux Pre-built binaries of tools are not available on Linux. So once again sort of stumped...

[Jukka Jylänki]

If you do know where node.js is located in your system, try editing the file ~/.emscripten and add the path to the node.js file in there. That should get rid of the node.js issue. The warning with "did not see a source tree above.." is currently expected in emsdk master and incoming branches, and can be safely ignored - apologies for the false positive noise in that message.

   Jukka

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[Jack Woolford]

Okay will quickly reply while I have internet access via a tethered connection to my phone (maintenance going on here with the ADSL2+ connection). So I've now got the emsdk-master branch working but I now get these errors compiling LLVM (which I need to do before compiling Clang and Cling) via EMCMake:

jack@jack-Inspiron-3537 ~/Desktop/Programming/src/build_emscripten $ /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emcmake cmake /home/jack/Desktop/Programming/src

-- Looking for __dso_handle

-- Looking for __dso_handle - found

-- Performing Test HAVE_INT64_T

-- Performing Test HAVE_INT64_T - Success

-- Performing Test HAVE_UINT64_T

-- Performing Test HAVE_UINT64_T - Success

-- Performing Test HAVE_U_INT64_T

-- Performing Test HAVE_U_INT64_T - Success

-- Performing Test LLVM_HAS_ATOMICS

-- Performing Test LLVM_HAS_ATOMICS - Success

-- Performing Test SUPPORTS_NO_VARIADIC_MACROS_FLAG

-- Performing Test SUPPORTS_NO_VARIADIC_MACROS_FLAG - Success

-- Target triple: x86_64-unknown-linux-gnu

-- Native target architecture is X86

-- Threads enabled.

-- Doxygen disabled.

-- Sphinx disabled.

CMake Error at cmake/modules/HandleLLVMOptions.cmake:17 (message):

  Host Clang version must be at least 3.1!

Call Stack (most recent call first):

  CMakeLists.txt:315 (include)

-- Configuring incomplete, errors occurred!

See also "/home/jack/Desktop/Programming/src/build_emscripten/CMakeFiles/CMakeOutput.log".

See also "/home/jack/Desktop/Programming/src/build_emscripten/CMakeFiles/CMakeError.log".

ERROR    root: Configure step failed with non-zero return code 1! Command line: ['cmake', '/home/jack/Desktop/Programming/src', '-DCMAKE_TOOLCHAIN_FILE=/home/jack/Desktop/Programming/emsdk_portable/emscripten/master/cmake/Modules/Platform/Emscripten.cmake']

There is more output then this but mainly just it saying Not found, found etc. etc. Anyway I was looking at this: https://github.com/kripken/llvm.js and the commands used there, are these necessary for what I'm trying to do as well, even if I want a 64-bit output?

Thanks.

[Jack Woolford]

This time I tried with emconfigure again with the emsdk and the command: --disable-compiler-version-checks

Problem is everything seems to run fine or so it seems, I'm not entirely sure. Anyway I then went on to do ./emmake ./make and that produced a huge amount of errors although really just the same thing over and over for different files.

Output of ./emconfigure ./configure: 

jack@jack-Inspiron-3537 ~/Desktop/Programming/src/build_emscripten $  /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emconfigure /home/jack/Desktop/Programming/src/configure --disable-compiler-version-checks
checking for C compiler default output file name... a.out

checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler...

yes
checking whether /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emcc accepts -g... yes
checking for /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emcc option to accept ISO C89... none needed
checking whether we are using the GNU C++ compiler... yes
checking whether /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/em++ accepts -g... yes
checking how to run the C preprocessor... /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emcc -E
checking whether GCC or Clang is our host compiler... clang
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu

checking type of operating system we

're going to host on... Linux

checking type of operating system we'

re going to target... Linux
checking target architecture... x86_64
checking optimization flags... -O3
checking for GNU make... make
checking whether ln -s works... yes
checking for nm... /usr/bin/nm
checking for cmp... /usr/bin/cmp
checking for cp... /bin/cp
checking for date... /bin/date
checking for find... /usr/bin/find
checking for grep... /bin/grep
checking for mkdir... /bin/mkdir
checking for mv... /bin/mv
checking for ranlib... /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emranlib
checking for ar... /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emar
checking for rm... /bin/rm
checking for sed... /bin/sed
checking for tar... /bin/tar
checking for pwd... /bin/pwd
checking for dot... echo dot
checking for a BSD-compatible install... /usr/bin/install -c
checking for bzip2... /bin/bzip2
checking for cat... /bin/cat
checking for doxygen... no
checking for groff... /usr/bin/groff
checking for gzip... /bin/gzip
checking for pdfroff... no
checking for zip... /usr/bin/zip
checking for ocamlc... no
checking for ocamlopt... no
checking for ocamldep... no
checking for ocamldoc... no
checking for gas... no
checking for as... /usr/bin/as
checking for linker version... 3.3
checking for compiler -Wl,-R<path> option... yes
checking for compiler -rdynamic option... yes
checking for compiler -Wl,--version-script option... yes
checking for grep that handles long lines and -e... (cached) /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking errno.h usability... yes
checking errno.h presence... yes
checking for errno.h... yes
checking tool compatibility... ok
checking optional compiler flags... -Wno-variadic-macros -Wno-missing-field-initializers -Wcovered-switch-default -Wno-uninitialized
checking for python... /usr/bin/python
checking for python >= 2.5... /usr/bin/python (2.7.6)
checking for sin in -lm... yes
checking for library containing dlopen... -ldl
checking for library containing clock_gettime... none required
checking for library containing setupterm... no
checking for library containing el_init... no
checking for library containing mallinfo... none required
checking for pthread_mutex_init in -lpthread... yes
checking for library containing pthread_mutex_lock... none required
checking for library containing pthread_rwlock_init... none required
checking for library containing pthread_getspecific... none required
checking for compress2 in -lz... no
checking for xml2-config... no
checking for libxml2 includes... xml2-config not found
checking for dirent.h that defines DIR... yes
checking for library containing opendir... none required
checking for MAP_ANONYMOUS vs. MAP_ANON... yes
checking whether stat file-mode macros are broken... no
checking for sys/wait.h that is POSIX.1 compatible... yes
checking whether time.h and sys/time.h may both be included... yes
checking how to run the C++ preprocessor... /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/em++ -E
checking cxxabi.h usability... no
checking cxxabi.h presence... no
checking for cxxabi.h... no
checking dlfcn.h usability... yes
checking dlfcn.h presence... yes
checking for dlfcn.h... yes
checking execinfo.h usability... no
checking execinfo.h presence... no
checking for execinfo.h... no
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking for inttypes.h... (cached) yes
checking link.h usability... yes
checking link.h presence... yes
checking for link.h... yes
checking malloc.h usability... yes
checking malloc.h presence... yes
checking for malloc.h... yes
checking setjmp.h usability... yes
checking setjmp.h presence... yes
checking for setjmp.h... yes
checking signal.h usability... yes
checking signal.h presence... yes
checking for signal.h... yes
checking for stdint.h... (cached) yes
checking termios.h usability... yes
checking termios.h presence... yes
checking for termios.h... yes
checking for unistd.h... (cached) yes
checking utime.h usability... yes
checking utime.h presence... yes
checking for utime.h... yes
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking sys/param.h usability... yes
checking sys/param.h presence... yes
checking for sys/param.h... yes
checking sys/resource.h usability... yes
checking sys/resource.h presence... yes
checking for sys/resource.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking sys/uio.h usability... yes
checking sys/uio.h presence... yes
checking for sys/uio.h... yes
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking malloc/malloc.h usability... no
checking malloc/malloc.h presence... no
checking for malloc/malloc.h... no
checking mach/mach.h usability... no
checking mach/mach.h presence... no
checking for mach/mach.h... no
checking valgrind/valgrind.h usability... no
checking valgrind/valgrind.h presence... no
checking for valgrind/valgrind.h... no
checking fenv.h usability... yes
checking fenv.h presence... yes
checking for fenv.h... yes
checking whether FE_ALL_EXCEPT is declared... yes
checking whether FE_INEXACT is declared... yes
checking pthread.h usability... yes
checking pthread.h presence... yes
checking for pthread.h... yes
checking zlib.h usability... no
checking zlib.h presence... no
checking for zlib.h... no
checking CrashReporterClient.h usability... no
checking CrashReporterClient.h presence... no
checking for CrashReporterClient.h... no
checking __crashreporter_info__... no
checking for HUGE_VAL sanity... yes
checking for pid_t... yes
checking for size_t... yes
checking whether struct tm is in sys/time.h or time.h... time.h
checking for int64_t... yes
checking for uint64_t... yes
checking for backtrace... yes
checking for ceilf... yes
checking for floorf... yes
checking for roundf... yes
checking for rintf... yes
checking for nearbyintf... yes
checking for getcwd... yes
checking for powf... yes
checking for fmodf... yes
checking for strtof... yes
checking for round... yes
checking for log... yes
checking for log2... yes
checking for log10... yes
checking for exp... yes
checking for exp2... yes
checking for getpagesize... yes
checking for getrusage... yes
checking for getrlimit... yes
checking for setrlimit... yes
checking for gettimeofday... yes
checking for isatty... yes
checking for mkdtemp... yes
checking for mkstemp... yes
checking for mktemp... yes
checking for posix_spawn... yes
checking for pread... yes
checking for realpath... yes
checking for sbrk... yes
checking for setrlimit... (cached) yes
checking for strerror... yes
checking for strerror_r... yes
checking for setenv... yes
checking for strtoll... yes
checking for strtoq... yes
checking for sysconf... yes
checking for malloc_zone_statistics... no
checking for setjmp... yes
checking for longjmp... yes
checking for sigsetjmp... no
checking for siglongjmp... yes
checking for writev... yes
checking for futimes... yes
checking for futimens... yes
checking if printf has the %a format character... yes
checking for srand48/lrand48/drand48 in <stdlib.h>... yes
checking whether arc4random is declared... no
checking whether strerror_s is declared... no
checking for isnan in <math.h>... yes
checking for isnan in <cmath>... yes
checking for std::isnan in <cmath>... yes
checking for isinf in <math.h>... yes
checking for isinf in <cmath>... yes
checking for std::isinf in <cmath>... yes
checking for finite in <ieeefp.h>... no
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for getpagesize... (cached) yes
checking for working mmap... yes
checking for mmap of files... yes
checking if /dev/zero is needed for mmap... no
checking for GCC atomic builtins... yes
checking for 32-bit userspace on 64-bit system... no
checking for __dso_handle... yes
checking for compiler -fvisibility-inlines-hidden option... yes
configure: creating ./config.status
config.status: creating include/llvm/Config/Targets.def
config.status: creating include/llvm/Config/AsmPrinters.def
config.status: creating include/llvm/Config/AsmParsers.def
config.status: creating include/llvm/Config/Disassemblers.def
config.status: creating Makefile.config
config.status: creating llvm.spec
config.status: creating docs/doxygen.cfg
config.status: creating tools/clang/docs/doxygen.cfg
config.status: creating bindings/ocaml/llvm/META.llvm
config.status: creating include/llvm/Config/config.h
config.status: creating include/llvm/Config/llvm-config.h
config.status: creating include/llvm/Support/DataTypes.h
config.status: creating tools/clang/include/clang/Config/config.h
config.status: executing setup commands
config.status: executing Makefile commands
config.status: executing Makefile.common commands
config.status: executing examples/Makefile commands
config.status: executing lib/Makefile commands
config.status: executing test/Makefile commands
config.status: executing test/Makefile.tests commands
config.status: executing unittests/Makefile commands
config.status: executing tools/Makefile commands
config.status: executing utils/Makefile commands
config.status: executing projects/Makefile commands
config.status: executing bindings/Makefile commands
config.status: executing bindings/ocaml/Makefile.ocaml commands

Output of ./emmake ./make:

jack@jack-Inspiron-3537 ~/Desktop/Programming/src/build_emscripten $  /home/jack/Desktop/Programming/emsdk_portable/emscripten/master/emmake make
llvm[0]: Constructing LLVMBuild project information.
make[1]: Entering directory `/home/jack/Desktop/Programming/src/build_emscripten/lib/Support'
llvm[1]: Compiling APFloat.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling APInt.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling APSInt.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling ARMBuildAttrs.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling ARMWinEH.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Allocator.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Atomic.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling BlockFrequency.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling BranchProbability.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling CommandLine.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Compression.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling ConvertUTF.c for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling ConvertUTFWrapper.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling CrashRecoveryContext.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling DAGDeltaAlgorithm.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling DataExtractor.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling DataStream.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Debug.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling DeltaAlgorithm.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Dwarf.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling DynamicLibrary.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Errno.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling ErrorHandling.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling FileOutputBuffer.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling FileUtilities.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling FoldingSet.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling FormattedStream.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling GraphWriter.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Hashing.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Host.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling IncludeFile.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling IntEqClasses.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling IntervalMap.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling IntrusiveRefCntPtr.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling IsInf.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling IsNAN.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling LEB128.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling LineIterator.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Locale.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling LockFileManager.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling MD5.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling ManagedStatic.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Memory.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling MemoryBuffer.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling MemoryObject.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Mutex.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Path.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling PluginLoader.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling PrettyStackTrace.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Process.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Program.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling RWMutex.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling RandomNumberGenerator.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Regex.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling ScaledNumber.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling SearchForAddressOfSpecialSymbol.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
llvm[1]: Compiling Signals.cpp for Debug+Asserts build
WARNING  root: -I or -L of an absolute path "-I/home/jack/Desktop/Programming/src/build_emscripten/include" encountered. If this is to a local system header/library, it may cause problems (local system files make sense for compiling natively on your system, but not necessarily to JavaScript). Pass '-Wno-warn-absolute-paths' to emcc to hide this warning.
In file included from /home/jack/Desktop/Programming/src/lib/Support/Signals.cpp:30:
/home/jack/Desktop/Programming/src/lib/Support/Unix/Signals.inc:272:15: error:
      use of undeclared identifier 'backtrace'
  int depth = backtrace(StackTrace,
              ^
1 error generated.
ERROR    root: compiler frontend failed to generate LLVM bitcode, halting
make[1]: *** [/home/jack/Desktop/Programming/src/build_emscripten/lib/Support/Debug+Asserts/Signals.o] Error 1
make[1]: Leaving directory `/home/jack/Desktop/Programming/src/build_emscripten/lib/Support'
make: *** [all] Error 1

Once again any help with this is appreciated,

Thanks!