I'm trying to build the Flutter engine on Windows. I think VS 2017 is needed and I only have that version of VS installed. I had to do these two things that were not among the instructions here:
set GYP_MSVS_VERSION=2017
set DEPOT_TOOLS_WIN_TOOLCHAIN=0
Then, in the compile insturctions here, I'm getting errors after python .\flutter\tools\gn --unoptimized.
λ python .\flutter\tools\gn --unoptimized Generating GN files in: out\host_debug_unopt Traceback (most recent call last): File "C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py", line 154, in main() File "C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py", line 121, in main args = _SetupScript(cpu, win_sdk_path) File "C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py", line 68, in _SetupScript return [os.path.normpath(os.path.join(os.environ['GYP_MSVS_OVERRIDE_PATH'],
File "C:\Installs\Flutter\building\depot_tools\win_tools-2_7_15_chromium14_bin\python\bin\lib\os.py", line 425, in getitem return self.data[key.upper()] KeyError: 'GYP_MSVS_OVERRIDE_PATH' ERROR at //build/toolchain/win/BUILD.gn:28:18: Script returned non-zero exit code. toolchain_data = exec_script("setup_toolchain.py", ^---------- Current dir: C:/Installs/Flutter/engine/src/out/host_debug_unopt/ Command: C:/Installs/Flutter/building/depot_tools/win_tools-2_7_15_chromium14_bin/python/bin/python.exe C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py "C:\Program Files (x86)/Microsoft Visual Studio/2017/Community" ../../third_party/gyp/pylib/gyp/win_tool.py "C:\Program Files (x86)\Windows Kits\10" "C:\WINDOWS\System32;C:\WINDOWS\SysWOW64;Arm64Unused" x64 Returned 1. See //BUILD.gn:6:1: which caused the file to be included. group("default") { ^------------------
After doing set GYP_MSVS_OVERRIDE_PATH=C:\Program Files (x86)\Microsoft Visual Studio\2017 now I get:
λ python .\flutter\tools\gn --unoptimized Generating GN files in: out\host_debug_unopt Traceback (most recent call last): File "C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py", line 154, in main() File "C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py", line 126, in main env = _ExtractImportantEnvironment(variables) File "C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py", line 50, in _ExtractImportantEnvironment 'required to be set to valid path' % required) Exception: Environment variable "SYSTEMROOT" required to be set to valid path ERROR at //build/toolchain/win/BUILD.gn:28:18: Script returned non-zero exit code. toolchain_data = exec_script("setup_toolchain.py", ^---------- Current dir: C:/Installs/Flutter/engine/src/out/host_debug_unopt/ Command: C:/Installs/Flutter/building/depot_tools/win_tools-2_7_15_chromium14_bin/python/bin/python.exe C:/Installs/Flutter/engine/src/build/toolchain/win/setup_toolchain.py "C:\Program Files (x86)\Microsoft Visual Studio\2017" ../../third_party/gyp/pylib/gyp/win_tool.py "C:\Program Files (x86)\Windows Kits\10" "C:\WINDOWS\System32;C:\WINDOWS\SysWOW64;Arm64Unused" x64 Returned 1. See //BUILD.gn:6:1: which caused the file to be included. group("default") { ^------------------
SYSTEMROOT is already set:
λ echo %SYSTEMROOT%
C:\WINDOWS
I tried these, but still I'm getting the same error.
set WindowsSdkDir=C:\Program Files (x86)\Windows Kits\8.1
SET use_sysroot=0
SET USE_SYSROOT=0
How can I get over this issue and compile the Flutter engine?
Edit: by the way, I hit enter when it asks for a username Username for 'https://chrome-internal.googlesource.com':, could it be related?
