Commit e3a931ef0b86419b5e4ba17de51535393471ed9d
2018-07-09T18:11:29
gen-def.py: pass headers as arguments so that msys2 can convert posix paths When one is not using the msys2 python, the header files that are passed in as environment variable cannot be found. https://ci.appveyor.com/project/fonttools/ttfautohint-py/build/1.0.65/job/rkremny4jjid9nl2#L803 This is because msys2 shell and make use POSIX paths (e.g. /c/Users/clupo/...) whereas non-msys2 python.exe uses native Windows paths (e.g. C:\Users\clupo\...). Msys2 will automatically convert command line arguments (but not environment variables) from POSIX to Windows paths when calling a native win32 executable, so we pass the header paths as arguments instead of environment variables. This way the gen-def.py script can support both mingw python running in an MSYS2 shell, and native win32 python.