Can't compile on Windows "No rule to make target"

[Tyde]

Hi, when I try to compile the crate I do get the following error:

--- stdout
cargo:rustc-link-lib=static=lua
OPT_LEVEL = Some("0")
TARGET = Some("x86_64-pc-windows-gnu")
HOST = Some("x86_64-pc-windows-gnu")
TARGET = Some("x86_64-pc-windows-gnu")
TARGET = Some("x86_64-pc-windows-gnu")
HOST = Some("x86_64-pc-windows-gnu")
CC_x86_64-pc-windows-gnu = None
CC_x86_64_pc_windows_gnu = None
HOST_CC = None
CC = None
TARGET = Some("x86_64-pc-windows-gnu")
HOST = Some("x86_64-pc-windows-gnu")
CFLAGS_x86_64-pc-windows-gnu = None
CFLAGS_x86_64_pc_windows_gnu = None
HOST_CFLAGS = None
CFLAGS = None
DEBUG = Some("true")
make -e -f "C:/Users/Tyde/.cargo/git/checkouts/rust-lua53-382fc6466662b050/c855949/lua-source/src/Makefile" "LUA_A=lua53.dll" "LUA_T=lua.exe" \
        "AR=gcc.exe -shared -o" "RANLIB=strip --strip-unneeded" \
        "SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe
make[1]: Entering directory `/c/Users/Tyde/rustws/lua_interop/target/debug/build/lua-400f40c450b96a19/out'
make[1]: Leaving directory `/c/Users/Tyde/rustws/lua_interop/target/debug/build/lua-400f40c450b96a19/out'

--- stderr
make[1]: *** No rule to make target `lua.c', needed by `lua.o'.  Stop.
make.exe": *** [mingw] Error 2
thread 'main' panicked at 'Error: The command
        "make" "-e" "-f" "C:\\Users\\Tyde\\.cargo\\git\\checkouts\\rust-lua53-382fc6466662b050\\c855949\\lua-source/src\\Makefile" "mingw"
did not run successfully.', C:\Users\Tyde\.cargo\git\checkouts\rust-lua53-382fc6466662b050\c855949\build.rs:176:19
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

this error message seems to indicate, that the makefile isn't able to find lua.c. I also tried running that exact make task in the lua-source/src/ folder and it seems to work here. Is there something needed to allow the makefile to find lua.c?

[Tyde]

I've found the reason for this error. On windows (at least in my build environment) the VPATH needs the backslashes which are replaced with slashes in the build.rs. When I fixed it, it compiled (see https://github.com/Tyde/rust-lua53/commit/2d2a2c5778bfe4af6daf4791767316ab459555b6)