wasm-ld: error: failed to write the output file: permission denied

[jinkoo2]

Installed following the getting started guide on Windows 7. The installation went fine with no error and the installation check was okay without any error. But, I get the permission error when I try to test on the hello_world.c sample (emcc hello_world.c). I have full-permission on the machine and the disk has enough free space.

C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\mytests>emcc hello_world.c
wasm-ld: error: failed to write the output file: permission denied
emcc: error: 'C:/Users/jkim20/Desktop/projects/express/deleteme/emscripten/emsdk/upstream/bin\wasm-ld.exe -o a.out.wasm C:\Users\jkim20\AppData\Local\Temp\emscripten_temp_b9hqya07\hello_world_0.o -LC:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\system\local\lib -LC:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\system\lib -LC:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm\libc.a C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm\libcompiler_rt.a C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm\libc++-noexcept.a C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm\libc++abi-noexcept.a C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm\libdlmalloc.a C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm\libc_rt_wasm.a C:\Users\jkim20\Desktop\projects\express\deleteme\emscripten\emsdk\upstream\emscripten\cache\wasm\libsockets.a -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr --allow-undefined --strip-debug --export-table --export main --export emscripten_stack_get_end --export emscripten_stack_get_free --export emscripten_stack_init --export stackSave --export stackRestore --export stackAlloc --export __wasm_call_ctors --export fflush --export __errno_location -z stack-size=5242880 --initial-memory=16777216 --no-entry --max-memory=16777216 --global-base=1024' failed (1)

[geogiam-net]

This is also happening to me right now.

Windows 7, full permissions, cmd as admin, no write only attribs

C:\wasm-emscripten\emsdk\upstream\emscripten>emcc tests/hello_world.c -v
shared:INFO: (Emscripten: Running sanity checks)
"C:/wasm-emscripten/emsdk/upstream/bin\clang.exe" -DEMSCRIPTEN -fignore-excepti
ons -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj
-mllvm -disable-lsr -Xclang -isystemC:\wasm-emscripten\emsdk\upstream\emscripten
\system\include\SDL -target wasm32-unknown-emscripten -D__EMSCRIPTEN_major__=2 -
D__EMSCRIPTEN_minor__=0 -D__EMSCRIPTEN_tiny__=10 -D_LIBCPP_ABI_VERSION=2 -Dunix
-D__unix -D__unix__ -Werror=implicit-function-declaration --sysroot=C:\wasm-emsc
ripten\emsdk\upstream\emscripten\system -Xclang -isystemC:\wasm-emscripten\emsdk
\upstream\emscripten\cache\wasm\include -Xclang -iwithsysroot/include\compat -Xc
lang -iwithsysroot/include\libc -Xclang -iwithsysroot/lib\libc\musl\arch\emscrip
ten -Xclang -iwithsysroot/local\include -Xclang -iwithsysroot/include\SSE -Xclan
g -iwithsysroot/include\neon -Xclang -iwithsysroot/lib\compiler-rt\include -Xcla
ng -iwithsysroot/lib\libunwind\include -v tests/hello_world.c -c -o C:\Users\urz
a\AppData\Local\Temp\emscripten_temp_s5t9rfg9\hello_world_0.o
clang version 12.0.0 (Cswircachegitchromium.googlesource.com-external-github.com
-llvm-llvm--project 445289aa63e1b82b9eea6497fb2d0443813a9d4e)
Target: wasm32-unknown-emscripten
Thread model: posix
InstalledDir: C:/wasm-emscripten/emsdk/upstream/bin
(in-process)
"C:\wasm-emscripten\emsdk\upstream\bin\clang.exe" -cc1 -triple wasm32-unkn
own-emscripten -emit-obj -mrelax-all --mrelax-relocations -disable-free -main-fi
le-name hello_world.c -mrelocation-model static -mframe-pointer=none -fno-roundi
ng-math -mconstructor-aliases -target-cpu generic -fvisibility hidden -debugger-
tuning=gdb -v -resource-dir "C:\wasm-emscripten\emsdk\upstream\lib\clang\1
2.0.0" -D EMSCRIPTEN -D EMSCRIPTEN_major=2 -D EMSCRIPTEN_minor=0 -D EM
SCRIPTEN_tiny=10 -D _LIBCPP_ABI_VERSION=2 -D unix -D __unix -D unix -isysr
oot "C:\wasm-emscripten\emsdk\upstream\emscripten\system" -internal-isystem
"C:\wasm-emscripten\emsdk\upstream\lib\clang\12.0.0\include" -internal-i
system "C:\wasm-emscripten\emsdk\upstream\emscripten\system/include/wasm32-
emscripten" -internal-isystem "C:\wasm-emscripten\emsdk\upstream\emscripten
\system/include" -Werror=implicit-function-declaration -fdebug-compilation-dir "
C:\wasm-emscripten\emsdk\upstream\emscripten" -ferror-limit 19 -fmessage-len
gth=80 -fgnuc-version=4.2.1 -fignore-exceptions -fcolor-diagnostics "-isystemC:
\wasm-emscripten\emsdk\upstream\emscripten\system\include\SDL" "-isystemC:
\wasm-emscripten\emsdk\upstream\emscripten\cache\wasm\include" "-iwithsys
root/include\compat" "-iwithsysroot/include\libc" "-iwithsysroot/lib\libc\mu
sl\arch\emscripten" "-iwithsysroot/local\include" "-iwithsysroot/include\SSE
" "-iwithsysroot/include\neon" "-iwithsysroot/lib\compiler-rt\include" "-iwit
hsysroot/lib\libunwind\include" -mllvm -combiner-global-alias-analysis=false -
mllvm -enable-emscripten-sjlj -mllvm -disable-lsr -o "C:\Users\urza\AppData\
Local\Temp\emscripten_temp_s5t9rfg9\hello_world_0.o" -x c tests/hello_world.c

clang -cc1 version 12.0.0 based upon LLVM 12.0.0git default target x86_64-pc-win
dows-msvc
ignoring nonexistent directory "C:\wasm-emscripten\emsdk\upstream\emscripten\cac
he\wasm\include"
ignoring nonexistent directory "C:\wasm-emscripten\emsdk\upstream\emscripten\sys
tem/include/wasm32-emscripten"
#include "..." search starts here:
#include <...> search starts here:
C:\wasm-emscripten\emsdk\upstream\emscripten\system\include\SDL
C:\wasm-emscripten\emsdk\upstream\emscripten\system/include\compat
C:\wasm-emscripten\emsdk\upstream\emscripten\system/include\libc
C:\wasm-emscripten\emsdk\upstream\emscripten\system/lib\libc\musl\arch\emscript
en
C:\wasm-emscripten\emsdk\upstream\emscripten\system/local\include
C:\wasm-emscripten\emsdk\upstream\emscripten\system/include\SSE
C:\wasm-emscripten\emsdk\upstream\emscripten\system/include\neon
C:\wasm-emscripten\emsdk\upstream\emscripten\system/lib\compiler-rt\include
C:\wasm-emscripten\emsdk\upstream\emscripten\system/lib\libunwind\include
C:\wasm-emscripten\emsdk\upstream\lib\clang\12.0.0\include
C:\wasm-emscripten\emsdk\upstream\emscripten\system/include
End of search list.
cache:INFO: generating system library: libc.a... (this will be cached in "C:\was
m-emscripten\emsdk\upstream\emscripten\cache\wasm\libc.a" for subsequent builds)

C:/wasm-emscripten/emsdk/upstream/bin\llvm-ar.exe: error: C:\Users\urza\AppData
Local\Temp\emscripten_temp_s5t9rfg9\libc.a: permission denied
Traceback (most recent call last):
File "C:\wasm-emscripten\emsdk\upstream\emscripten\emcc.py", line 3313, in
sys.exit(main(sys.argv))
File "C:\wasm-emscripten\emsdk\upstream\emscripten\emcc.py", line 3306, in ma
in
ret = run(args)
File "C:\wasm-emscripten\emsdk\upstream\emscripten\emcc.py", line 2137, in ru
n
extra_files_to_link += system_libs.calculate([f for , f in sorted(temp_file
s)] + extra_files_to_link, link_as_cxx, forced=forced_stdlibs)
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\system_libs.py", line
1536, in calculate
add_library(system_libs_map['libc'])
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\system_libs.py", line
1479, in add_library
libs_to_link.append((lib.get_path(), need_whole_archive))
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\system_libs.py", line
337, in get_path
return shared.Cache.get(self.get_filename(), self.build)
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\cache.py", line 127,
in get
temp = creator()
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\system_libs.py", line
386, in build
create_lib(out_filename, self.build_objects())
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\system_libs.py", line
108, in create_lib
building.emar('cr', libname, inputs)
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\building.py", line 81
0, in emar
run_process(cmd, stdout=stdout, stderr=stderr, env=env)
File "C:\wasm-emscripten\emsdk\upstream\emscripten\tools\shared.py", line 94,
in run_process
ret = subprocess.run(cmd, check=check, input=input, *args, **kw)
File "D:\obj\windows-release\37amd64_Release\msi_python\zip_amd64\subprocess.p
y", line 487, in run
subprocess.CalledProcessError: Command '['C:\wasm-emscripten\emsdk\upstream\
emscripten\emar.bat', 'cr', 'C:\Users\urza\AppData\Local\Temp\emscripten
temp_s5t9rfg9\libc.a', '@C:\Users\urza\AppData\Local\Temp\emscripten_gelw
bild.rsp']' returned non-zero exit status 1.

[geogiam-net]

jinkoo2, move \emsdk\ to c:, remove all read only attributes, that is how I stopped your error and got my error

[jinkoo2]

Thanks for the quick reply, geogiam-net!
I just installed an older version as test (1.40.0) and it works well. So, for now, I'll be using a version that works for me. Certainly, the current 'latest' version has issue...

[geogiam-net]

you are right, thx, now it can do it

[fzy139]

same environment.
delete the upstream folder(wasm-binary) and reinstall the sdk.
2.0.0 works well.
Thanks @jinkoo2

[brupelo]

Thanks guys, this thread helped over here, first I tried latest (2.0.11 atm) and I'd get that permission error (win7 and unpacked on d:\software\emscripten). Then I just reverted to 2.0.0 as suggested and I was able to compile the hello world from the official tutorial.

[Xeverous]

Can confirm: same issue for me (newest emscripten on Windows 7). Rolling back to emscripten 2.0.0 fixes the problem.

[Xeverous]

For me 2.0.8 is the latest version that does not have this problem.

[sbc100]

If anyone can figure out what is going on here we would love to see a fix for this.

[brupelo]

Probably if some emscripten contributor would make a git-bisect this one would be fixed in no time :)

[kripken]

There are docs for bisection here: https://emscripten.org/docs/contributing/developers_guide.html#bisecting

Yes, for those that can reproduce this issue, bisection may be the fastest way to find out where this broke, as @brupelo said.

I don't have a windows machine but let me know if there are any questions on those docs.

[Xeverous]

I have no setup currently that could build and install emscripten from specific commits, but I have "bisected" emsdk-downloadable releases:

• 2.0.8 is the last that works
• 2.0.9 is the first that does not work