Re: Explicit interpreter paths considered harmful

[Ludovic Courtès]

Here's a patch.

Likewise, ‘pmccabe2html’ assumes /usr/bin/awk, but I’m not sure what to
do here:

  - ‘gl_PMCCABE2HTML’ does ‘AC_PROG_AWK’, so we could substitute @AWK@
    in there.

  - OTOH, ‘pmccabe2html’ is typically a maintainer script, so I’d rather
    remove ‘AC_PROG_AWK’ and do something similar to the patch below.

Thoughts?

Thanks,
Ludo’.

>From a75bd801044aeaa3df5406185ce5a298c75b1d6b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <address@hidden>
Date: Thu, 29 Oct 2009 22:53:06 +0100
Subject: [PATCH] Don't assume the availability of /usr/bin/perl for build-aux 
scripts.

* build-aux/announce-gen, build-aux/gitlog-to-changelog,
  build-aux/update-copyright, build-aux/useless-if-before-free: Don't
  assume the availability of /usr/bin/perl.
---
 build-aux/announce-gen           |    6 ++++--
 build-aux/gitlog-to-changelog    |    6 ++++--
 build-aux/update-copyright       |    6 ++++--
 build-aux/useless-if-before-free |    4 +++-
 4 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/build-aux/announce-gen b/build-aux/announce-gen
index 972b881..024cb35 100755
--- a/build-aux/announce-gen
+++ b/build-aux/announce-gen
@@ -1,7 +1,9 @@
-#!/usr/bin/perl -w
+#!/bin/sh
+exec perl -wx "$0" "$@"
+#!perl
 # Generate a release announcement message.
 
-my $VERSION = '2009-09-11 09:50'; # UTC
+my $VERSION = '2009-10-29 21:47'; # UTC
 # The definition above must lie within the first 8 lines in order
 # for the Emacs time-stamp write hook (at end) to update it.
 # If you change this file with Emacs, please let the write hook
diff --git a/build-aux/gitlog-to-changelog b/build-aux/gitlog-to-changelog
index a0f8a08..4c3f428 100755
--- a/build-aux/gitlog-to-changelog
+++ b/build-aux/gitlog-to-changelog
@@ -1,7 +1,9 @@
-#!/usr/bin/perl
+#!/bin/sh
+exec perl -x "$0" "$@"
+#!perl
 # Convert git log output to ChangeLog format.
 
-my $VERSION = '2009-08-12 16:49'; # UTC
+my $VERSION = '2009-10-29 21:47'; # UTC
 # The definition above must lie within the first 8 lines in order
 # for the Emacs time-stamp write hook (at end) to update it.
 # If you change this file with Emacs, please let the write hook
diff --git a/build-aux/update-copyright b/build-aux/update-copyright
index 2480142..bb61808 100755
--- a/build-aux/update-copyright
+++ b/build-aux/update-copyright
@@ -1,7 +1,9 @@
-#!/usr/bin/perl -0777 -pi
+#!/bin/sh
+exec perl -x -0777 -pi "$0" "$@"
+#!perl
 # Update an FSF copyright year list to include the current year.
 
-my $VERSION = '2009-09-09.22:00'; # UTC
+my $VERSION = '2009-10-29.21:48'; # UTC
 
 # Copyright (C) 2009 Free Software Foundation, Inc.
 #
diff --git a/build-aux/useless-if-before-free b/build-aux/useless-if-before-free
index abcdef2..d707aee 100755
--- a/build-aux/useless-if-before-free
+++ b/build-aux/useless-if-before-free
@@ -1,4 +1,6 @@
-#!/usr/bin/perl -T
+#!/bin/sh
+exec perl -T -x "$0" "$@"
+#!perl
 # Detect instances of "if (p) free (p);".
 # Likewise for "if (p != NULL) free (p);".  And with braces.
 # Also detect "if (NULL != p) free (p);".
-- 
1.6.4.2