src/etc/rust-gdbgui

#!/bin/sh
# Copyright 2014 The Rust Project Developers. See the COPYRIGHT
# file at the top-level directory of this distribution and at
# http://rust-lang.org/COPYRIGHT.
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms.

# Exit if anything fails
set -e

if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "-help" ] || [ "$1" = "--help" ]; then
    echo "
rust-gdbgui
===========
gdbgui - https://gdbgui.com - is a graphical front-end to GDB
that runs in a browser. This script invokes gdbgui with the Rust
pretty printers loaded.

Simple usage  : rust-gdbgui target/debug/myprog
With arguments: rust-gdbgui 'target/debug/myprog arg1 arg2...'
  (note the quotes)


Hints
=====
gdbgui won't be able to find the rust 'main' method automatically, so
in its options make sure to disable the 'Add breakpoint to main after
loading executable' setting to avoid a 'File not found: main' warning
on startup.

Instead, type 'main' into gdbgui's file browser and you should get
auto-completion on the filename. Just pick 'main.rs', add a breakpoint
by clicking in the line number gutter, and type 'r' or hit the Restart
icon to start your program running.
"
    exit 0
fi

# Find out where the pretty printer Python module is
RUSTC_SYSROOT=`rustc --print=sysroot`
GDB_PYTHON_MODULE_DIRECTORY="$RUSTC_SYSROOT/lib/rustlib/etc"

# Set the environment variable `RUST_GDB` to overwrite the call to a
# different/specific command (defaults to `gdb`).
RUST_GDB="${RUST_GDB:-gdb}"

# Set the environment variable `RUST_GDBGUI` to overwrite the call to a
# different/specific command (defaults to `gdbgui`).
RUST_GDBGUI="${RUST_GDBGUI:-gdbgui}"

# These arguments get passed through to GDB and make it load the
# Rust pretty printers.
GDB_ARGS="--directory=\"$GDB_PYTHON_MODULE_DIRECTORY\" -iex \"add-auto-load-safe-path $GDB_PYTHON_MODULE_DIRECTORY\""

# Finally we execute gdbgui.
PYTHONPATH="$PYTHONPATH:$GDB_PYTHON_MODULE_DIRECTORY" \
  exec ${RUST_GDBGUI} \
  --gdb ${RUST_GDB} \
  --gdb-args "${GDB_ARGS}" \
  "${@}"