Re: add license to link-warning.h

[Eric Blake]

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According to Eric Blake on 12/9/2009 10:56 AM:
> Plus a useless use of cat, for a total of 3 processes?  Come on, we can do 
> better than that.  A single sed process is sufficient, by rephrasing the 
> problem (rather than what do we want to exclude, it should be what we want to 
> include).
> 
> sed -n '/GL_LINK_WARNING/,$$ p' $(top_srcdir)/build-aux/link-warning.h > 
> address@hidden
> 
> (with the address range terminator $ already escaped for Makefile.am)

Tested this, then pushed:

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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>From a7f94464817dcc9bf86761b6480149c9230128b2 Mon Sep 17 00:00:00 2001
From: Eric Blake <address@hidden>
Date: Wed, 9 Dec 2009 16:11:27 -0700
Subject: [PATCH] link-warning: optimize generation

Avoid a useless use of cat.

* modules/link-warning (Makefile.am): Reduce process usage.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog            |    9 +++++++--
 modules/link-warning |    5 ++---
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 01b91e4..6b592e4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-12-09  Eric Blake  <address@hidden>
+
+       link-warning: optimize generation
+       * modules/link-warning (Makefile.am): Reduce process usage.
+
 2009-12-09  Bruno Haible  <address@hidden>

        * doc/posix-functions/unsetenv.texi: Mention Solaris 10 bug for which a
diff --git a/modules/link-warning b/modules/link-warning
index 970ad55..daf3d47 100644
--- a/modules/link-warning
+++ b/modules/link-warning
@@ -14,9 +14,8 @@ BUILT_SOURCES += link-warning.h
 # build-aux/link-warning.h, except that it has the copyright header cut off.
 link-warning.h: $(top_srcdir)/build-aux/link-warning.h
        $(AM_V_GEN)rm -f address@hidden $@ && \
-       cat $(top_srcdir)/build-aux/link-warning.h \
-         | sed -e '1,/www\.gnu\.org\/licenses/d' | sed -e '1d' \
-         > address@hidden && \
+       sed -n '/GL_LINK_WARNING/,$$p' \
+         $(top_srcdir)/build-aux/link-warning.h > address@hidden && \
        mv address@hidden $@
 MOSTLYCLEANFILES += link-warning.h link-warning.h-t

-- 
1.6.5.rc1