Is it possible to build it under windows?

[kitcarsongit]

Did someone managed to build it under windows?

[brotzeit]

I think it depends on which features you want to use. I remember that @DavidDeSimone has tried to make the javascript feature work but I think it turned out to be complicated, as far as I remember. The webrender feature probably also doesn't work on windows. But I actually didn't try it ;)

[kitcarsongit]

i'll search for his posts. anyway, is there some preferred build system (mingw, cygwin, msvc) to try?

[brotzeit]

No idea, I only use windows for occasional gaming.

[DavidDeSimone]

I'll dig up the post in a second - the crux of the issue is that we use deno, which uses a set of bindings for v8 called "rusty_v8". Rusty_v8 works with a pre-compiled binary of v8 (google's javascript engine) that is compiled with msvc.

We compile emacs-ng with the same toolchain as vanilla emacs, which is not usually msvc. I'll be honest - I may have just been over my head at the time I attempted this. I did document my progress and thoughts pretty well. I got remacs builds working back in the day on windows - the main issue is with v8. I tried separating v8 at the DLL barrier, but I ran into roadblocks there.

[DavidDeSimone]

#47

[derinsh0]

I actually tried to build emacs-ng over the weekend on Mingw just for curiosity. Emacs master can successfully be built without a few features such as dbus, pgtk and cairo.

Right now I've stumbled upon some minor issues, and I'm afraid there could be some coming major ones. You have to make sure you use Msys git and disable clfr. But there still are some issues.

../rust_src/target/release/remacs_lib.lib:1: *** missing separator. Stop.

When I tried to use the rust toolchain x86_64-pc-windows-gnu I get

sed -i~ 's/rust_src\//..\/rust_src\//g' ../rust_src/target/release/remacs_lib.lib
sed: can't read ../rust_src/target/release/remacs_lib.lib: No such file or directory
make[1]: *** No rule to make target '../rust_src/target/release/remacs_lib.lib', needed by 'etags.exe'.  Stop.

Doing a manual cargo build or more specifically cargo build --release --manifest-path=../rust_src/remacs-lib/Cargo.toml will not produce the remacs_lib.lib file for some reason on GNU rust. I've made sure to make from project root. Output:

make -C lib-src all
make[1]: Entering directory '/emacs/emacs-ng/lib-src'
CARGO_BUILD_DEP_INFO_BASEDIR=/emacs/emacs-ng \
RUSTFLAGS="" \
cargo build --release --manifest-path=../rust_src/remacs-lib/Cargo.toml
   Compiling winapi v0.3.9
   Compiling regex-syntax v0.6.22
   Compiling rand_chacha v0.1.1
   Compiling rand_pcg v0.1.2
   Compiling rand v0.6.5
   Compiling syn v0.11.11
   Compiling libc v0.2.97
   Compiling memchr v2.3.4
   Compiling rand_isaac v0.1.1
   Compiling rand_hc v0.1.0
   Compiling aho-corasick v0.7.15
   Compiling darling_core v0.2.2
   Compiling regex v1.4.3
   Compiling rand_jitter v0.1.4
   Compiling rand_os v0.1.3
   Compiling errno v0.2.7
   Compiling time v0.1.44
   Compiling darling_macro v0.2.2
   Compiling darling v0.2.2
   Compiling lisp-util v0.1.0 (C:\lib\msys64\emacs\emacs-ng\rust_src\crates\lisp_util)
   Compiling remacs-lib v0.1.0 (C:\lib\msys64\emacs\emacs-ng\rust_src\remacs-lib)
    Finished release [optimized] target(s) in 24.68s
sed -i~ 's/rust_src\//..\/rust_src\//g' ../rust_src/target/release/remacs_lib.lib
sed: can't read ../rust_src/target/release/remacs_lib.lib: No such file or directory
make[1]: *** No rule to make target '../rust_src/target/release/remacs_lib.lib', needed by 'etags.exe'.  Stop.
make[1]: Leaving directory '/emacs/emacs-ng/lib-src'
make: *** [Makefile:447: lib-src] Error 2