| From 0aac3047cd7681d610b22d79501c297fa3433148 Mon Sep 17 00:00:00 2001 |
| From: Ross Burton <ross.burton@intel.com> |
| Date: Thu, 12 Mar 2020 17:25:41 +0000 |
| Subject: [PATCH 2/7] m4sh: prefer bash over sh |
| |
| _AS_DETECT_BETTER_SHELL looks for a good shell to use, and tries to look for |
| 'sh' before 'bash'. Whilst for many systems sh is a symlink to bash, |
| there are many where sh is a symlink to a more minimal sh implementation. |
| |
| For example, Debian by default has /bin/sh -> /bin/dash: dash is a faster |
| shell to start (which makes a notable difference to boot speed) but is not |
| as fast as bash at executing long scripts (and configure scripts are not |
| known for their conciseness). |
| |
| Change the search order to bash then sh, so that a known-good shell (bash) |
| is used if available over something which is merely POSIX compliant. |
| --- |
| lib/m4sugar/m4sh.m4 | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4 |
| index 9d543952..84ef84a9 100644 |
| --- a/lib/m4sugar/m4sh.m4 |
| +++ b/lib/m4sugar/m4sh.m4 |
| @@ -230,7 +230,7 @@ dnl Remove any tests from suggested that are also required |
| [_AS_PATH_WALK([/bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH], |
| [case $as_dir in @%:@( |
| /*) |
| - for as_base in sh bash ksh sh5; do |
| + for as_base in bash sh ksh sh5; do |
| # Try only shells that exist, to save several forks. |
| as_shell=$as_dir$as_base |
| AS_IF([{ test -f "$as_shell" || test -f "$as_shell.exe"; } && |
| -- |
| 2.25.1 |
| |