Emscripton build fails with both Ubuntu and Mac OS to generate inspect.js

[ycho]

Maybe I should file an issue at aomedia side but posting here to get helps!
On Ubuntu 18.04, I am running:
cmake ../aom -DCACHE_ENABLE=1 -DAOM_TARGET_CPU=generic -DENABLE_DOCS=0 -DENABLE_TESTS=0 -DCONFIG_ACCOUNTING=1 -DCONFIG_INSPECTION=1 -DCONFIG_MULTITHREAD=0 -DCONFIG_RUNTIME_CPU_DETECT=0 -DCONFIG_WEBM_IO=0 -DCMAKE_TOOLCHAIN_FILE=~/workspace/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake

(from the direction here: https://aomedia.googlesource.com/aom/+/master/README.md#emscripten-builds)

And getting this error from Ubuntu 18.04 (similar error for MS OS as well, https://www.irccloud.com/pastebin/fHUt0Yls/ )

• I am using, cmake 3.15, fresh instralled emsdk.

yushin@jurassic:~/workspace/aom_build$ cat /home/yushin/workspace/aom_build/CMakeFiles/CMakeError.log
Performing C SOURCE FILE Test C_TEST_COMPILED failed with the following output:
Change Dir: /home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_0ba6b/fast && /usr/bin/make -f CMakeFiles/cmTC_0ba6b.dir/build.make CMakeFiles/cmTC_0ba6b.dir/build
make[1]: Entering directory '/home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_0ba6b.dir/src.c.o
/home/yushin/workspace/emsdk/upstream/emscripten/emcc -DC_TEST_COMPILED -o CMakeFiles/cmTC_0ba6b.dir/src.c.o -c /home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp/src.c
/home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp/src.c:5:33: error: implicit declaration of function 'feenableexcept' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
(void)feenableexcept(FE_DIVBYZERO | FE_INVALID);
^
/home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp/src.c:5:33: note: did you mean 'feraiseexcept'?
/home/yushin/workspace/emsdk/upstream/emscripten/system/include/libc/fenv.h:12:5: note: 'feraiseexcept' declared here
int feraiseexcept(int);
^
/home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp/src.c:5:48: error: use of undeclared identifier 'FE_DIVBYZERO'
(void)feenableexcept(FE_DIVBYZERO | FE_INVALID);
^
/home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp/src.c:5:63: error: use of undeclared identifier 'FE_INVALID'
(void)feenableexcept(FE_DIVBYZERO | FE_INVALID);
^
3 errors generated.
emcc: error: '/home/yushin/workspace/emsdk/upstream/bin/clang -target wasm32-unknown-emscripten -D__EMSCRIPTEN_major__=1 -D__EMSCRIPTEN_minor__=39 -D__EMSCRIPTEN_tiny__=16 -D_LIBCPP_ABI_VERSION=2 -Dunix -D__unix -D__unix__ -Werror=implicit-function-declaration -Xclang -nostdsysteminc -Xclang -isystem/home/yushin/workspace/emsdk/upstream/emscripten/system/include/compat -Xclang -isystem/home/yushin/workspace/emsdk/upstream/emscripten/system/include -Xclang -isystem/home/yushin/workspace/emsdk/upstream/emscripten/system/include/libc -Xclang -isystem/home/yushin/workspace/emsdk/upstream/emscripten/system/lib/libc/musl/arch/emscripten -Xclang -isystem/home/yushin/workspace/emsdk/upstream/emscripten/system/local/include -Xclang -isystem/home/yushin/workspace/emsdk/upstream/emscripten/cache/wasm/include -DEMSCRIPTEN -fignore-exceptions -DC_TEST_COMPILED -c /home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp/src.c -Xclang -isystem/home/yushin/workspace/emsdk/upstream/emscripten/system/include/SDL -c -o CMakeFiles/cmTC_0ba6b.dir/src.c.o -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr' failed (1)
CMakeFiles/cmTC_0ba6b.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_0ba6b.dir/src.c.o' failed
make[1]: *** [CMakeFiles/cmTC_0ba6b.dir/src.c.o] Error 1
make[1]: Leaving directory '/home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_0ba6b/fast' failed
make: *** [cmTC_0ba6b/fast] Error 2

Source file was:
#define _GNU_SOURCE
#include <fenv.h>
void unused(void) {
(void)unused;
(void)feenableexcept(FE_DIVBYZERO | FE_INVALID);
}
int main(void) { return 0; }
Performing C SOURCE FILE Test C_FLAG_SUPPORTED failed with the following output:
Change Dir: /home/yushin/workspace/aom_build/CMakeFiles/CMakeTmp

[ycho]

Use av1-normative instead of master!