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| author | iximeow <me@iximeow.net> | 2021-03-13 14:19:55 -0800 |
|---|---|---|
| committer | iximeow <me@iximeow.net> | 2021-03-13 14:54:47 -0800 |
| commit | 93c53657c2289e979672ee6c4612af7e9eac109c (patch) | |
| tree | a0acdc143595f64a796827bc849a122dd49cc4e3 /ffi/README.md | |
| parent | 6232e8b1daf7067cb2e8065687530d5f88ecb46d (diff) | |
split ffi crate to support distinct 16, 32, and 64-bit builds
initial work to optionally discard any instruction printing support
when using `-Z build-std` to fully remove .eh_frame, a stripped
long_mode_no_fmt .so is 61kb!
Diffstat (limited to 'ffi/README.md')
| -rw-r--r-- | ffi/README.md | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ffi/README.md b/ffi/README.md new file mode 100644 index 0000000..02a20e3 --- /dev/null +++ b/ffi/README.md @@ -0,0 +1,8 @@ +# building +for maximum small, ffi crates' `rustflags` includes `-C link-args=-nostdlib`. to avoid conflicts with the native toolchain, this motivates cross-compiling for the native target with `--target x86_64-unknown-linux-gnu`. + +then, to remove extra `eh_frame` information from core, rebuild core with panic=abort by `-Z build-std` to cargo. in total, a build command for `yaxpeax_x86_ffi*` looks like: + +``` +cargo build -Z build-std --release --no-default-features --verbose --target x86_64-unknown-linux-gnu +`` |