# Help building the engine **URL:** \ **Category:** Source Code\ **Created:** [October 25, 2023, 11:34pm UTC](https://forum.defold.com/t/help-building-the-engine/74687 "2023-10-25T23:34:55Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![luca.falco](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/l/3bc359/32.png) [@luca.falco](https://forum.defold.com/u/luca.falco)\ **Post date:** [October 25, 2023, 11:34pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/1 "2023-10-25T23:34:55Z")
I’m trying to build the engine. These are the steps I’ve made ```lua ./scripts/build.py shell ``` To paget the packages into a `local_sdks` folder ```lua ./scripts/package/package_win32_sdk.sh ``` ```lua ./scripts/build.py --package-path=./local_sdks install_sdk --platform=x86_64-win32 ``` install external packages ```lua ./scripts/build.py install_ext --platform=x86_64-win32 --package-path=./local_sdks ``` then executing the build command with ```lua ./scripts/build.py build_engine --platform=x86_64-win32 --skip-tests -- --skip-build-tests ``` I get this error: ```lua src\test\jni/Testapi.empty.cpp => Testapi In file included from src\test\jni/Testapi.empty.cpp:1: In file included from C:\Users\myuser\_root\src\defold\engine\jni\src\test\testapi.h:19: C:\Users\myuser\_root\src\defold\tmp\dynamo_home\sdk\include\dmsdk/dlib/array.h:18:10: fatal error: 'assert.h' file not found 18 | #include | ^ ~~~~~~~~~ 1 error generated. Traceback (most recent call last): File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Scripting.py", line 119, in waf_entry_point run_commands() File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Scripting.py", line 182, in run_commands ctx=run_command(cmd_name) ^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Scripting.py", line 173, in run_command ctx.execute() File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Configure.py", line 85, in execute super(ConfigurationContext,self).execute() File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Context.py", line 92, in execute self.recurse([os.path.dirname(g_module.root_path)]) File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Context.py", line 133, in recurse user_function(self) File "C:\Users\myuser\_root\src\defold\engine\jni\wscript", line 24, in configure conf.recurse('src') File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Context.py", line 133, in recurse user_function(self) File "C:\Users\myuser\_root\src\defold\engine\jni\src\wscript", line 11, in configure conf.recurse('test') File "C:\Users\myuser\_root\src\defold\tmp\dynamo_home\ext\bin\waf3-2.0.23-7dbdd0b348178777c338c9a31f6218a5\waflib\Context.py", line 133, in recurse user_function(self) File "C:\Users\myuser\_root\src\defold\engine\jni\src\test\wscript", line 31, in configure gen_java.generate(header_path = make_path('./testapi.h'), File "C:\Users\myuser\_root\src\defold\engine\jni\scripts\gen_java.py", line 1207, in generate ir = gen_ir.gen(source_path, includes, module_name, namespace, []) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\myuser\_root\src\defold\engine\jni\scripts\external\gen_ir.py", line 223, in gen ast = clang_cpp(source_path, includes) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\myuser\_root\src\defold\engine\jni\scripts\external\gen_ir.py", line 220, in clang_cpp return subprocess.check_output(cmd) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Python312\Lib\subprocess.py", line 466, in check_output return run(*popenargs, stdout=PIPE, timeout=timeout, check=True, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Python312\Lib\subprocess.py", line 571, in run raise CalledProcessError(retcode, process.args, subprocess.CalledProcessError: Command '['clang++', '-Xclang', '-ast-dump=json', '-c', '-IC:\\Users\\myuser\\_root\\src\\defold\\engine\\jni', '-IC:\\Users\\myuser\\_root\\src\\defold\\tmp\\dynamo_home\\sdk\\include', 'src\\test\\jni/Testapi.empty.cpp']' returned non-zero exit status 1. [exec] python C:\Users\myuser\_root\src\defold\tmp\dynamo_home/ext/bin/waf --prefix=C:\Users\myuser\_root\src\defold\tmp\dynamo_home --skip-tests distclean configure build install --platform=x86_64-win32 --skip-build-tests Error: Traceback (most recent call last): File "C:\Users\myuser\_root\src\defold\scripts\build.py", line 2390, in f() File "C:\Users\myuser\_root\src\defold\scripts\build.py", line 1118, in build_engine self._build_engine_lib(args, lib, host) File "C:\Users\myuser\_root\src\defold\scripts\build.py", line 1074, in _build_engine_lib run.env_command(self._form_env(), args + plf_args + self.waf_options + skip_build_tests, cwd = cwd) File "C:\Users\myuser\_root\src\defold\build_tools\run.py", line 98, in env_command return _exec_command(args, shell = False, stdout = None, env = env, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\myuser\_root\src\defold\build_tools\run.py", line 75, in _exec_command raise e run.ExecException: 2 ``` seems like the assert.h header is missing, should I download a different version of the win sdk? i’m using the one specified in `scripts\package\package_win32_sdk.sh` ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [October 26, 2023, 7:04am UTC](https://forum.defold.com/t/help-building-the-engine/74687/2 "2023-10-26T07:04:51Z")
Hi! I reckon I have to update the notes, since it is no longer needed for Windows and macOS to install the sdk, if they already have Visual Studio or XCode installed. I’d say, remove the sdk folder /tmp/dynamo\_home/ext/SDKs/Win32 again (no need to run the “install\_sdk” command). Then you should be able to build. (side note, I think it _should_ have worked for you, but the recommended approach is faster) EDIT: It seems we already had documented that the step was optional for Windows/macOS: [documentation](https://github.com/defold/defold/blob/dev/README_BUILD.md#local-sdks) Edit2: I also added a separate section about ’install\_sdk’, restating the part that it may not be necessary depending on platform. ---
**Author:** ![luca.falco](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/l/3bc359/32.png) [@luca.falco](https://forum.defold.com/u/luca.falco)\ **Post date:** [October 26, 2023, 12:32pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/3 "2023-10-26T12:32:16Z")
Thank you for the heads up and the quick update 🙂 I’m still having the missing assert.h error, am I missing something from the installation of VS? I downloaded everything that is in the Development with c++ workload. ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [October 26, 2023, 12:44pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/4 "2023-10-26T12:44:22Z")
What VS version, Windows version are you on? What does the vswhere2 toold report in you build step? Perhaps best if you upload your build log. ---
**Author:** ![luca.falco](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/l/3bc359/32.png) [@luca.falco](https://forum.defold.com/u/luca.falco)\ **Post date:** [October 26, 2023, 12:52pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/5 "2023-10-26T12:52:42Z")
Sure! This is my build log [log.txt](https://forum.defold.com/uploads/short-url/xcuHpmgvnzyoXmiT6cS2nzYzaGD.txt) (71.6 KB) VS version is 2019 on windows 11. I also have VS2022 installed but the paths seem correct (?) ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [October 26, 2023, 1:54pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/6 "2023-10-26T13:54:46Z")
Thanks! First check, yes, your SDK is found locally: ```lua Checking for program 'CL' : C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\bin\Hostx64\x64\CL.exe Checking for program 'LINK' : C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\bin\Hostx64\x64\LINK.exe Checking for program 'LIB' : C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\bin\Hostx64\x64\LIB.exe Checking for program 'RC' : C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\RC.exe Checking for program 'signtool' : C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\signtool.exe ``` And it build the first library (`dlib`) fine. Then it fails when building the the (relatively new) library `jni`. This library has a dependency of `clang++`, and I’m guessing it finds one, but it’s not the one under the Visual Studio installation. In your command prompt, what do you get if you run `which clang++´ ? I’m guessing you get some other installation, and that the solution may be to make sure that the MSVC clang++ is found first. ---
**Author:** ![luca.falco](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/l/3bc359/32.png) [@luca.falco](https://forum.defold.com/u/luca.falco)\ **Post date:** [October 26, 2023, 3:20pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/7 "2023-10-26T15:20:08Z")
Yep, I had another installation of clang++ on my system, I changed the PATH and installed the MSVC clang tools ```lua ➜ defold git:(dev) which clang++ /c/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/Llvm/x64/bin/clang++ ``` this is the which result now. The build process gives the same error so I’m guessing something is still missing ? ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [October 26, 2023, 3:39pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/8 "2023-10-26T15:39:42Z")
What if you try the clang command in isolation? (The one listed as failing at the ens of the log) ---
**Author:** ![luca.falco](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/l/3bc359/32.png) [@luca.falco](https://forum.defold.com/u/luca.falco)\ **Post date:** [October 26, 2023, 3:44pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/9 "2023-10-26T15:44:18Z")
Tried that too by running this: ```lua clang++ -Xclang -ast-dump=json -c \ -I/C/Users/34BTUser/_root/src/defold/engine/jni \ -I/C/Users/34BTUser/_root/src/defold/tmp/dynamo_home/sdk/include \ C:/Users/34BTUser/_root/src/defold/engine/jni/src/test/jni/Testapi.empty.cpp ``` Dumped the log to a file → [outputLog.txt](https://forum.defold.com/uploads/short-url/5RGoFtm7iMeWIalrvvEh3dtpJoX.txt) (342.3 KB) ---
**Author:** ![Mathias\_Westerdahl](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/mathias_westerdahl/32/228_2.png) [@Mathias\_Westerdahl](https://forum.defold.com/u/Mathias_Westerdahl)\ **Post date:** [October 26, 2023, 4:15pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/10 "2023-10-26T16:15:13Z")
Ok, that outpu suggests that the command succeeded, i.e no error on assert.h. Not sure what to test next to be honest. ---
**Author:** ![luca.falco](https://forum-defold.b-cdn.net/letter_avatar_proxy/v4/letter/l/3bc359/32.png) [@luca.falco](https://forum.defold.com/u/luca.falco)\ **Post date:** [October 27, 2023, 11:43pm UTC](https://forum.defold.com/t/help-building-the-engine/74687/11 "2023-10-27T23:43:22Z")
So, problably was some kind of error with PATHS in windows since I had multiple versions of LLVM isntalled. Now I am able to build the engine 🥳, but a new error came up when trying to run the editor 😄 I installed leiningen and ran `lein.bat init`, this is the output: ```lua Compiling 38 source files to C:\Users\34BTUser\_root\src\defold\editor\target\classes Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. using cached file 'https://github.com/sass/dart-sass/releases/download/1.62.1/dart-sass-1.62.1-windows-x64.zip' -> 'C:\Users\34BTUser\.dcache\github_com-sass-dart-sass-releases-download-1.62.1-dart-sass-1.62.1-windows-x64.zip-22307838444234354535353839304435463822' sass: styling/stylesheets/ -> resources/ java.io.IOException: Cannot run program "C:\Users\34BTUser\_root\src\defold\editor\target\packages\dart-sass\1.62.1\dart-sass\sass": CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessBuilder.start (ProcessBuilder.java:1143) java.lang.ProcessBuilder.start (ProcessBuilder.java:1073) leiningen.sass$sass.invokeStatic (sass.clj:85) leiningen.sass$sass.doInvoke (sass.clj:71) clojure.lang.RestFn.applyTo (RestFn.java:139) clojure.lang.Var.applyTo (Var.java:705) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$partial_task$fn__7380.doInvoke (main.clj:284) clojure.lang.RestFn.applyTo (RestFn.java:139) clojure.lang.AFunction$1.doInvoke (AFunction.java:31) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$apply_task.invokeStatic (main.clj:334) leiningen.core.main$apply_task.invoke (main.clj:320) leiningen.core.main$resolve_and_apply.invokeStatic (main.clj:343) leiningen.core.main$resolve_and_apply.invoke (main.clj:336) leiningen.init$init.invokeStatic (init.clj:88) leiningen.init$init.doInvoke (init.clj:75) clojure.lang.RestFn.invoke (RestFn.java:410) clojure.lang.AFn.applyToHelper (AFn.java:154) clojure.lang.RestFn.applyTo (RestFn.java:132) clojure.lang.Var.applyTo (Var.java:705) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$partial_task$fn__7380.doInvoke (main.clj:284) clojure.lang.RestFn.invoke (RestFn.java:410) clojure.lang.AFn.applyToHelper (AFn.java:154) clojure.lang.RestFn.applyTo (RestFn.java:132) clojure.lang.AFunction$1.doInvoke (AFunction.java:31) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$apply_task.invokeStatic (main.clj:334) leiningen.core.main$apply_task.invoke (main.clj:320) leiningen.core.main$resolve_and_apply.invokeStatic (main.clj:343) leiningen.core.main$resolve_and_apply.invoke (main.clj:336) leiningen.core.main$_main$fn__7469.invoke (main.clj:453) leiningen.core.main$_main.invokeStatic (main.clj:442) leiningen.core.main$_main.doInvoke (main.clj:439) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.lang.Var.applyTo (Var.java:705) clojure.core$apply.invokeStatic (core.clj:667) clojure.main$main_opt.invokeStatic (main.clj:514) clojure.main$main_opt.invoke (main.clj:510) clojure.main$main.invokeStatic (main.clj:664) clojure.main$main.doInvoke (main.clj:616) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.lang.Var.applyTo (Var.java:705) clojure.main.main (main.java:40) Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessImpl.create (ProcessImpl.java:-2) java.lang.ProcessImpl. (ProcessImpl.java:499) java.lang.ProcessImpl.start (ProcessImpl.java:158) java.lang.ProcessBuilder.start (ProcessBuilder.java:1110) java.lang.ProcessBuilder.start (ProcessBuilder.java:1073) leiningen.sass$sass.invokeStatic (sass.clj:85) leiningen.sass$sass.doInvoke (sass.clj:71) clojure.lang.RestFn.applyTo (RestFn.java:139) clojure.lang.Var.applyTo (Var.java:705) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$partial_task$fn__7380.doInvoke (main.clj:284) clojure.lang.RestFn.applyTo (RestFn.java:139) clojure.lang.AFunction$1.doInvoke (AFunction.java:31) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$apply_task.invokeStatic (main.clj:334) leiningen.core.main$apply_task.invoke (main.clj:320) leiningen.core.main$resolve_and_apply.invokeStatic (main.clj:343) leiningen.core.main$resolve_and_apply.invoke (main.clj:336) leiningen.init$init.invokeStatic (init.clj:88) leiningen.init$init.doInvoke (init.clj:75) clojure.lang.RestFn.invoke (RestFn.java:410) clojure.lang.AFn.applyToHelper (AFn.java:154) clojure.lang.RestFn.applyTo (RestFn.java:132) clojure.lang.Var.applyTo (Var.java:705) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$partial_task$fn__7380.doInvoke (main.clj:284) clojure.lang.RestFn.invoke (RestFn.java:410) clojure.lang.AFn.applyToHelper (AFn.java:154) clojure.lang.RestFn.applyTo (RestFn.java:132) clojure.lang.AFunction$1.doInvoke (AFunction.java:31) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.core$apply.invokeStatic (core.clj:669) clojure.core$apply.invoke (core.clj:662) leiningen.core.main$apply_task.invokeStatic (main.clj:334) leiningen.core.main$apply_task.invoke (main.clj:320) leiningen.core.main$resolve_and_apply.invokeStatic (main.clj:343) leiningen.core.main$resolve_and_apply.invoke (main.clj:336) leiningen.core.main$_main$fn__7469.invoke (main.clj:453) leiningen.core.main$_main.invokeStatic (main.clj:442) leiningen.core.main$_main.doInvoke (main.clj:439) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.lang.Var.applyTo (Var.java:705) clojure.core$apply.invokeStatic (core.clj:667) clojure.main$main_opt.invokeStatic (main.clj:514) clojure.main$main_opt.invoke (main.clj:510) clojure.main$main.invokeStatic (main.clj:664) clojure.main$main.doInvoke (main.clj:616) clojure.lang.RestFn.applyTo (RestFn.java:137) clojure.lang.Var.applyTo (Var.java:705) clojure.main.main (main.java:40) ``` EIDT: PATH problems again with my shell environment, all good now, I managed to build editor and engine. I’ll get to building stuff now 🥳