Don't assume /bin/bash is available on every system.

build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 #set -x
 set -e

build_sysroot/build_sysroot.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Requires the CHANNEL env var to be set to `debug` or `release.`
 

build_sysroot/prepare_sysroot_src.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 cd $(dirname "$0")
 

cargo.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [ -z $CHANNEL ]; then
 export CHANNEL='debug'

clean_all.sh

@@ -1,5 +1,6 @@
-#!/bin/bash --verbose
+#!/usr/bin/env bash
 set -e
+set -v
 
 rm -rf target/ build_sysroot/{sysroot/,sysroot_src/,target/,Cargo.lock} perf.data{,.old}
 rm -rf regex/ simple-raytracer/

prepare.sh

@@ -1,5 +1,6 @@
-#!/bin/bash --verbose
+#!/usr/bin/env bash
 set -e
+set -v
 
 source prepare_build.sh
 

prepare_build.sh

@@ -1,4 +1,5 @@
-#!/bin/bash --verbose
+#!/usr/bin/env bash
 set -e
+set -v
 
 ./build_sysroot/prepare_sysroot_src.sh

rustup.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

test.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # TODO(antoyo): rewrite to cargo-make (or just) or something like that to only rebuild the sysroot when needed?